CN215006359U - Control system for hearth - Google Patents
Control system for hearth Download PDFInfo
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- CN215006359U CN215006359U CN202121420499.3U CN202121420499U CN215006359U CN 215006359 U CN215006359 U CN 215006359U CN 202121420499 U CN202121420499 U CN 202121420499U CN 215006359 U CN215006359 U CN 215006359U
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Abstract
The utility model discloses a control system for furnace relates to electrical integration control system for furnace field, this control system for furnace, include: the thermocouple signal module is used for detecting the temperature in the hearth and outputting a temperature signal to a WK1 temperature control signal; the WK1 temperature control module is used for converting the obtained temperature signal into a voltage signal and outputting the voltage signal to the PLC module; the upper computer module is used for outputting a set value to the PLC module; the PLC module is used for calculating according to the input voltage signal and a set value to obtain a heating parameter; the WK2 temperature control module is used for converting the heating parameters and writing the converted heating parameters into the solid-state relay module; compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a PLC reads and writes temperature control module, controls solid state relay again to guarantee that the heating heat preservation process is high-efficient stable, reduced the target temperature of equipment and actual temperature's error greatly through this scheme mode, simultaneously through host computer direct observation operation process, it is simple convenient.
Description
Technical Field
The utility model relates to an electrical integration control system for furnace field specifically is a control system for furnace.
Background
With the continuous development of various electronic information technology fields such as computers, communication, microelectronics and the like, the requirements of people on the system performance of various devices are continuously improved, and an electrical integrated control system taking a PLC as a core is also widely applied in the field of actual industrial production. How to realize accurate and stable control on target equipment is always one of the requirements of industrial production, and many control systems still have a rising space in terms of accuracy, stability and convenience.
The hearth is a three-dimensional space surrounded by furnace walls for fuel combustion. The function is to ensure that the fuel is burnt out as far as possible and to cool the temperature of the flue gas at the outlet of the hearth to the temperature allowed by the safe work of the convection heating surface.
The control of the temperature of multiple points in the hearth in the current market is not stable enough, the temperature control effect is not ideal enough, and the quality of products is uneven and needs to be improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a control system for furnace to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a control system for a furnace, comprising:
the thermocouple signal module is used for detecting the temperature in the hearth and outputting a temperature signal to a WK1 temperature control signal;
the WK1 temperature control module is used for converting the obtained temperature signal into a voltage signal and outputting the voltage signal to the PLC module;
the upper computer module is used for outputting a set value to the PLC module;
the PLC module is used for calculating according to the input voltage signal and a set value to obtain a heating parameter;
the WK2 temperature control module is used for converting the heating parameters and writing the converted heating parameters into the solid-state relay module;
the solid-state relay module is used for controlling the working time and the working strength of the heating tube module according to the written information;
the heating pipe module is used for heating the hearth;
the thermocouple signal module is connected with the WK1 temperature control module, the WK1 temperature control module is connected with the PLC module, the upper computer module is connected with the PLC module, the PLC module is connected with the WK2 temperature control module, the WK2 temperature control module is connected with the solid-state relay module, and the solid-state relay module is connected with the heating pipe module.
As a further aspect of the present invention: and the WK1 temperature control module is connected with the PLC module through RS485 communication.
As a further aspect of the present invention: the PLC module is connected with the WK2 temperature control module through RS485 communication.
As a further aspect of the present invention: the solid-state relay module is connected with the digital input point of the PLC module through a signal wire.
As a further aspect of the present invention: the working voltage of the solid-state relay module is provided by three-phase alternating current.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a PLC reads and writes temperature control module, controls solid state relay again to guarantee that the heating heat preservation process is high-efficient stable, reduced the target temperature of equipment and actual temperature's error greatly through this scheme mode, simultaneously through host computer direct observation operation process, it is simple convenient.
Drawings
FIG. 1 is a schematic diagram of a furnace control system.
Fig. 2 is a circuit diagram of a furnace control system.
Detailed Description
The technical solution 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 some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, a control system for a furnace includes:
the thermocouple signal module is used for detecting the temperature in the hearth and outputting a temperature signal to a WK1 temperature control signal;
the WK1 temperature control module is used for converting the obtained temperature signal into a voltage signal and outputting the voltage signal to the PLC module;
the upper computer module is used for outputting a set value to the PLC module;
the PLC module is used for calculating according to the input voltage signal and a set value to obtain a heating parameter;
the WK2 temperature control module is used for converting the heating parameters and writing the converted heating parameters into the solid-state relay module;
the solid-state relay module is used for controlling the working time and the working strength of the heating tube module according to the written information;
the heating pipe module is used for heating the hearth;
the thermocouple signal module is connected with the WK1 temperature control module, the WK1 temperature control module is connected with the PLC module, the upper computer module is connected with the PLC module, the PLC module is connected with the WK2 temperature control module, the WK2 temperature control module is connected with the solid-state relay module, and the solid-state relay module is connected with the heating pipe module.
In this embodiment: referring to fig. 2, the WK1 temperature control module (WK 1 in fig. 2) is connected to the PLC module via RS485 communication.
The thermocouple signal module is connected with the WK1 communication module through RS232 communication, and the WK1 temperature control module is connected with the PLC module through RS485 communication.
In this embodiment: referring to fig. 2, the PLC module is connected to the WK2 temperature control module (WK 2 in fig. 2) through RS485 communication.
RS485 is a serial data interface standard, and in order to expand the communication capability of the application range, the multi-point and bidirectional communication capability is added, that is, a maximum of 32 receivers are allowed to be connected to a balanced bus, and the driving capability of the transmitter and the protection characteristic of communication collision are increased, and the common mode range of the bus is expanded through differential transmission.
In this embodiment: referring to fig. 2, the solid state relay module (SCR in fig. 2) is connected to the digital input point of the PLC module through a signal line.
The PLC module is used for monitoring whether a fault exists in the running process of the system (for example, the solid-state relay module stops working when needing to work, and the solid-state relay module cannot control the heating pipe module to heat) and finding the fault in time, so that maintenance personnel can solve the fault as soon as possible.
In this embodiment: referring to fig. 2, the operating voltage of the solid state relay module (SCR in fig. 2) is provided by three-phase ac power.
The three-phase alternating current supplies power for the solid-state relay module through the fuse, and the fuse prevents that the solid-state relay from being burnt down when the three-phase alternating current is too big.
The utility model discloses a theory of operation is: at first thermocouple signal module detects the inside temperature of furnace through the thermocouple, export temperature signal for WK1 temperature control module, WK1 temperature control module turns into voltage signal with temperature signal and exports for the PLC module, the PLC module obtains heating parameter through the voltage signal operation of the setting value of host computer module input and WK1 module input, export heating parameter for WK2 temperature control module, WK2 temperature control module exports this signal for solid-state relay module after changing, the heating of solid-state relay module control heating pipe module, change the inside temperature of furnace, the utility model discloses a PLC module reads and writes WK1 temperature control module and WK2 temperature control module, controls solid-state relay module again, with the high-efficient stability of assurance heating heat preservation process.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A control system for a furnace is characterized in that:
this control system for furnace includes:
the thermocouple signal module is used for detecting the temperature in the hearth and outputting a temperature signal to a WK1 temperature control signal;
the WK1 temperature control module is used for converting the obtained temperature signal into a voltage signal and outputting the voltage signal to the PLC module;
the upper computer module is used for outputting a set value to the PLC module;
the PLC module is used for calculating according to the input voltage signal and a set value to obtain a heating parameter;
the WK2 temperature control module is used for converting the heating parameters and writing the converted heating parameters into the solid-state relay module;
the solid-state relay module is used for controlling the working time and the working strength of the heating tube module according to the written information;
the heating pipe module is used for heating the hearth;
the thermocouple signal module is connected with the WK1 temperature control module, the WK1 temperature control module is connected with the PLC module, the upper computer module is connected with the PLC module, the PLC module is connected with the WK2 temperature control module, the WK2 temperature control module is connected with the solid-state relay module, and the solid-state relay module is connected with the heating pipe module.
2. The furnace control system of claim 1, wherein the WK1 temperature control module is connected to the PLC module via RS485 communication.
3. The furnace control system of claim 1, wherein the PLC module is connected to the WK2 temperature control module via RS485 communication.
4. The furnace control system of claim 1, wherein the solid state relay module is connected to a digital input point of the PLC module via a signal line.
5. The furnace control system according to claim 4, wherein the operating voltage of the solid state relay module is provided by three-phase alternating current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121420499.3U CN215006359U (en) | 2021-06-24 | 2021-06-24 | Control system for hearth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121420499.3U CN215006359U (en) | 2021-06-24 | 2021-06-24 | Control system for hearth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215006359U true CN215006359U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121420499.3U Active CN215006359U (en) | 2021-06-24 | 2021-06-24 | Control system for hearth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215006359U (en) |
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2021
- 2021-06-24 CN CN202121420499.3U patent/CN215006359U/en active Active
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