CN215062915U - Control system of hot blast stove device - Google Patents
Control system of hot blast stove device Download PDFInfo
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- CN215062915U CN215062915U CN202121010194.5U CN202121010194U CN215062915U CN 215062915 U CN215062915 U CN 215062915U CN 202121010194 U CN202121010194 U CN 202121010194U CN 215062915 U CN215062915 U CN 215062915U
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Abstract
The utility model relates to an air heating technical field especially relates to hot-blast furnace device control system. The utility model discloses aim at providing the hot-blast furnace device control system of ability accurate control, adopt PID control, proportion and the supply capacity that can accurate regulation oil gas realize the accurate control to hot-blast furnace device control system. Mesh for this reason, the utility model provides a novel hot-blast furnace control system, start the unit including controller, remote control ware, oil gas control unit, detecting element, scene, host computer, audible-visual annunciator, motor module, oil circuit switch valve and ignition, this control system both can start to stop unit and host computer through the scene and carry out field control, also can carry out remote control through remote control ware, and the security performance is good, and the system precision is high, and degree of automation is high, has improved hot-blast furnace device's work efficiency greatly.
Description
Technical Field
The utility model relates to an air heating technical field especially relates to hot-blast furnace device control system.
Background
In the cement production process, a control system of a hot blast stove device is an important component in production control, the quality of the control system of the hot blast stove device directly influences the air temperature of a hearth and the heat efficiency of combustion, and the accuracy of the air temperature control of the hearth directly influences the quality of cement and the performance of a production line, so that the hot blast stove device is ensured to reach a temperature set value within a specified time and also to keep the optimal combustion. In order to ensure the control precision of the hot blast stove device, the supply amount of oil gas needs to be adjusted continuously, so that great difficulty is brought to a control system of the hot blast stove device, and therefore, the search for the control system of the hot blast stove device capable of accurately controlling the temperature becomes inevitable.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model aims to provide hot-blast furnace device control system of ability accurate control adopts PID automatic regulation control, can the accurate proportion of adjusting oil gas and supply volume, realizes the accurate control to hot-blast furnace device control system.
In order to realize the purpose of the utility model, the utility model discloses a technical scheme as follows:
the hot blast stove device control system is characterized by comprising a controller, a remote controller, an oil-gas control unit, a detection unit, a field start-stop unit, an upper computer, an audible and visual alarm, a motor module, an oil path switch valve and an ignition device, wherein the controller is respectively connected with the remote controller, the oil-gas control unit, the detection unit, the field start-stop unit, the upper computer, the audible and visual alarm, the motor module, the oil path switch valve and the ignition device.
Further, the controller comprises a CPU, a digital quantity input module, an analog quantity input module, a communication module 1, a communication module 2, a digital quantity output module and an analog quantity output module, the controller and the remote controller are communicated through a Modbus TCP/IP protocol, and the controller and the upper computer are communicated through a Profibus-DP protocol.
Furthermore, the oil-gas control unit comprises a gas path regulating valve and an oil path regulating valve, and the system controls the proportion of the gas supply quantity and the oil supply quantity through the gas path regulating valve and the oil path regulating valve, so as to control the temperature of a hearth of the hot blast stove device.
Furthermore, the field start-stop unit comprises a field start-stop button and a field emergency stop button, the field start-stop button and the field emergency stop button are directly connected with the digital quantity input module, the field start-stop button controls the operation of the system, and the operation of the hot blast stove device system is stopped under the emergency condition of the field emergency stop button.
Further, the detecting unit comprises a flame detection sensor, a hearth temperature sensor, an outlet temperature sensor, an oil cylinder material level sensor, an air path flow sensor and an oil path flow sensor, the flame detection sensor is direct to be connected with the digital quantity input module and displays whether the system is successfully ignited, the hearth temperature sensor and the outlet temperature sensor are direct to be connected with the analog quantity input module and display the inside of the hot blast stove device and the actual temperature of an outlet, the oil cylinder material level sensor is direct to be connected with the analog quantity input module and displays the oil level condition in the oil cylinder, the controller controls whether the oil supplementing device supplements oil to the oil cylinder according to the signal of the oil cylinder material level sensor in real time, and the air path flow sensor and the oil path flow sensor are respectively direct to be connected with the analog quantity input module and display the air supply quantity and the oil supply quantity respectively.
The control system of the utility model adopts closed-loop PID control, ensures the precision of oil gas supply of the hot blast stove device, and realizes the precise control of the temperature of the hearth; the CPU is used as a control core, so that the control is simple, the accuracy is high, the manpower is greatly saved, and the accurate and stable operation of a control system is facilitated.
Drawings
The hot blast stove device control system of the present invention is described below with reference to the accompanying drawings. In the drawings:
FIG. 1 is a schematic structural view of a hot blast stove device of the present invention;
FIG. 2 is a macro frame diagram of the hot blast stove unit of the present invention;
FIG. 3 is a detailed construction of a preferred embodiment of the hot blast stove assembly of the present invention;
fig. 4 is a control circuit diagram of the hot blast stove device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the following embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 2, the control system of the present invention comprises a controller, a remote controller, an oil-gas control unit, a detection unit, a field start/stop unit, an upper computer, an audible and visual alarm, a motor module, an oil path switch valve and an ignition device, wherein the controller is respectively connected with the remote controller, the oil-gas control unit, the detection unit, the field start/stop unit, the upper computer, the audible and visual alarm, the motor module, the oil path switch valve and the ignition device;
as shown in fig. 2 and 3, the controller in fig. 2 is a control core of the control system, and is composed of a CPU, a digital input module, an analog input module, a communication module 1, a communication module 2, a digital output module, and an analog output module, and is used to complete the control functions of all the hot blast stove devices, the controller and an upper computer perform Profibus-DP communication, and transmit the operating state of the system and signals of each sensor to the upper computer, and the upper computer displays the above information, so that a field operator can operate the system on the upper computer. The controller and the remote controller communicate through a Modbus TCP/IP protocol, the controller also transmits the running state of the system and signals of each sensor to the remote controller, and the remote controller receives information transmitted by the controller in real time and displays and stores the information. During remote control, the controller carries out closed-loop PID control, as shown in figures 1-4, the controller receives a temperature value setting signal of the remote controller in real time through a Modbus TCP/IP protocol, obtains an actual temperature value according to a detected hearth temperature sensor signal of the hot blast stove device and compares the actual temperature value with a temperature setting value, calculates the opening degree of the oil path regulating valve through PID control, and then calculates the opening degree of the gas path regulating valve, so that the oil injection quantity and the gas injection quantity of the nozzle are controlled, and the proportion of the oil injection quantity and the gas injection quantity reaches the optimal combustion ratio of fuel.
As shown in fig. 2 and 3, the oil-gas control unit in fig. 2 is composed of a gas path regulating valve and an oil path regulating valve, and the controller controls the opening degree of the two regulating valves in real time through the signal of the furnace temperature sensor.
As shown in fig. 2 and 3, the field start-stop unit in fig. 2 is composed of a field start-stop button and a field emergency-stop button, and during field control, the field start-stop button controls the start-stop of the hot blast stove device, and in emergency, a field operator can realize emergency stop through the field emergency-stop button.
As shown in fig. 2 and 3, the detection unit in fig. 2 is composed of a flame detection sensor, a furnace temperature sensor, an outlet temperature sensor, an oil cylinder level sensor, a gas path flow sensor and an oil path flow sensor, the flame detection sensor transmits detection signals to the controller and displays whether the hot blast stove device is ignited successfully, and meanwhile, the controller respectively transmits the detection signals to the remote controller and the upper computer through a Modbus TCP/IP protocol and a Profibus-DP protocol. The hearth temperature sensor and the outlet temperature sensor display the actual temperature inside the hot blast stove and at the outlet, the controller receives signals of the two sensors in real time, and meanwhile, the controller transmits temperature signals (4-20 mA) to the remote controller and the upper computer through a Modbus TCP/IP protocol and a Profibus-DP protocol respectively. The oil cylinder material level sensor displays the oil level condition in the oil cylinder, the controller receives a signal transmitted by the material level sensor in real time to obtain an actual oil level value, the actual oil level value is compared with a set oil level value in real time, when the oil level value is lower than a lower limit set value, the controller sends an alarm signal to the remote controller, the remote controller controls an oil supplementing device (not shown) to supplement oil to the oil cylinder (not shown), and when the oil level value is higher than an upper limit set value, the remote controller stops supplementing oil to the oil cylinder. The gas circuit flow sensor and the oil circuit flow sensor display the gas injection amount and the oil injection amount of the nozzle, the controller receives signals of the two sensors in real time, and meanwhile the controller transmits flow signals (such as 4-20 mA) to the remote controller and the upper computer through a Modbus TCP/IP protocol and a Profibus-DP protocol respectively.
As shown in fig. 2 and fig. 3, the audible and visual alarm is connected with the digital quantity output module, and the audible and visual alarm is flashing when the system has faults such as unsuccessful ignition and the like; when the system has a heavy fault, the system is automatically stopped, and the audible and visual alarm is constantly on.
The utility model discloses hot-blast furnace device control system work flow as follows:
when the system automatically operates, the controller receives a temperature set value and a starting signal of the remote controller in real time through a Modbus TCP/IP protocol, the oil path switch valve is opened, the motor module (an oil pump and a fan) controls the nozzle to spray oil and gas, the ignition device ignites and monitors the nozzle in real time through the flame detection sensor, if the ignition is successful, the hot blast stove device normally operates, the controller receives an ignition signal transmitted by the flame detection sensor in real time, and simultaneously, the controller transmits the ignition signal to the remote controller and the upper computer through the Modbus TCP/IP protocol and the Probus-DP protocol respectively to store and display the ignition signal. If the ignition is not successful, the controller sends an alarm signal, meanwhile, the controller transmits the alarm signal to the remote controller and the upper computer through a Modbus TCP/IP protocol and a Probus-DP protocol respectively, a remote operator stops the operation of the motor module through the remote controller, and a field operator can also stop the operation of the motor module through the upper computer so as to avoid fuel accumulation in the hot blast stove. After the hot blast stove device normally operates, monitoring an actual temperature value in the hot blast stove in real time through a hearth temperature sensor, comparing the actual temperature value with a set temperature value in real time, and if the actual temperature value is within an allowable deviation range of the set temperature value, enabling the hot blast stove device system to operate stably and enabling the opening proportion of an oil path regulating valve and an air path regulating valve to be proper; meanwhile, the controller can also transmit signals such as the actual temperature value, the running state of the hot blast stove device and the like to the remote controller and the upper computer in real time. If the actual temperature value suddenly deviates from the set temperature value in the operation process, the controller sends an alarm signal to drive the audible and visual alarm to flash, and simultaneously the alarm signal is transmitted to the remote controller and the upper computer, the PID control unit in the controller adjusts the opening of the oil path adjusting valve in real time according to the deviation between the set temperature value and the actual temperature value, and simultaneously adjusts the opening of the gas path adjusting valve in real time through the proportional control unit, and the alarm disappears, so that the automatic reset can be realized; if the hot blast stove device has a heavy fault signal, the controller gives a stop signal to drive the audible and visual alarm to be constantly on, and the system cannot be automatically reset.
When the on-site manual operation is carried out, an on-site operator presses an on-site start-stop button or operates the system on the upper computer, the controller drives the oil-gas control unit by receiving a set temperature value on the upper computer, and the controller obtains an actual temperature value according to a received hearth temperature sensor signal and transmits the actual temperature value to the remote controller through a Modbus TCP/IP protocol. When the equipment has serious faults, an operator presses a field emergency stop button, and the audible and visual alarm is constantly on.
The utility model discloses hot-blast furnace device control system regards as control core with the controller, and control is simple, shows hot-blast furnace device control system's running state on host computer and remote controller in real time, and the accuracy is high, has ensured the accurate steady operation of hot-blast furnace device.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (5)
1. The hot blast stove device control system is characterized by comprising a controller, a remote controller, an oil-gas control unit, a detection unit, a field start-stop unit, an upper computer, an audible and visual alarm, a motor module, an oil path switch valve and an ignition device, wherein the controller is respectively connected with the remote controller, the oil-gas control unit, the detection unit, the field start-stop unit, the upper computer, the audible and visual alarm, the motor module, the oil path switch valve and the ignition device.
2. The hot blast stove device control system according to claim 1, wherein the controller comprises a CPU, a digital input module, an analog input module, a communication module 1, a communication module 2, a digital output module, and an analog output module, the controller and the remote controller communicate via a Modbus TCP/IP protocol, and the controller and the upper computer communicate via a Profibus-DP protocol.
3. The control system of a hot blast stove device according to claim 1, wherein the oil and gas control unit comprises a gas path regulating valve and an oil path regulating valve, and the controller controls the gas supply amount and the oil supply amount through the gas path regulating valve and the oil path regulating valve, thereby controlling the temperature of the hearth of the hot blast stove device.
4. The hot blast stove device control system according to claim 1, wherein the field start-stop unit comprises a field start-stop button and a field emergency stop button, the field start-stop button and the field emergency stop button are directly connected to the digital input module, the field start-stop button is used for controlling the operation of the hot blast stove device, and the field emergency stop button is used for stopping the operation of the hot blast stove device in an emergency.
5. The control system of the hot blast stove device according to claim 2, wherein the detection unit comprises a flame detection sensor, a hearth temperature sensor, an outlet temperature sensor, an oil cylinder material level sensor, a gas path flow sensor and an oil path flow sensor, the flame detection sensor is directly connected with the digital quantity input module and displays whether the system is successfully ignited, the hearth temperature sensor and the outlet temperature sensor are directly connected with the analog quantity input module and displays the actual temperature of the inside and the outlet of the hot blast stove device, the oil cylinder material level sensor is directly connected with the analog quantity input module and displays the oil level condition in the oil cylinder, the controller controls the oil supplementing device to supplement oil to the oil cylinder according to the signal of the oil cylinder material level sensor, the gas path flow sensor and the oil path flow sensor are respectively directly connected with the analog quantity input module and respectively display the gas supply amount and the oil supply amount Amount of the compound (A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121010194.5U CN215062915U (en) | 2021-05-12 | 2021-05-12 | Control system of hot blast stove device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121010194.5U CN215062915U (en) | 2021-05-12 | 2021-05-12 | Control system of hot blast stove device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215062915U true CN215062915U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121010194.5U Active CN215062915U (en) | 2021-05-12 | 2021-05-12 | Control system of hot blast stove device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215062915U (en) |
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2021
- 2021-05-12 CN CN202121010194.5U patent/CN215062915U/en active Active
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Effective date of registration: 20220526 Address after: 100000 room 1201, Ganjiakou building, No. 17, Sanlihe Road, Haidian District, Beijing Patentee after: Sinoma overseas technology development Co.,Ltd. Address before: 100037 12 / F, Ganjiakou building, 17 Sanlihe Road, Haidian District, Beijing Patentee before: SINOMA OVERSEAS DEVELOPMENT CO.,LTD. |