CN113176741A - Blast furnace tuyere small jacket water temperature difference online monitoring system - Google Patents
Blast furnace tuyere small jacket water temperature difference online monitoring system Download PDFInfo
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- CN113176741A CN113176741A CN202110300134.5A CN202110300134A CN113176741A CN 113176741 A CN113176741 A CN 113176741A CN 202110300134 A CN202110300134 A CN 202110300134A CN 113176741 A CN113176741 A CN 113176741A
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- water
- blast furnace
- temperature sensor
- water inlet
- furnace tuyere
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 238000012544 monitoring process Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
Abstract
The invention provides a blast furnace tuyere small jacket water temperature difference on-line monitoring system, which comprises a water inlet pipe temperature sensor, a water outlet pipe temperature sensor, a gateway module and a water outlet pipe, wherein the water inlet pipe temperature sensor is arranged on a blast furnace tuyere water inlet pipe; the invention judges the heat load of the tuyere small sleeve of the blast furnace according to the water inlet and outlet temperature difference of the tuyere small sleeve, timely masters the working state of the tuyere of the blast furnace, and automatically adjusts the water outlet flow rate and the water outlet pressure of the water pump by using the frequency converter, thereby adjusting the water cooling speed of the tuyere small sleeve of the blast furnace, preventing the water leakage of the tuyere from burning through accidents in advance and avoiding the water leakage of the tuyere from happening.
Description
Technical Field
The invention is used in the technical field of iron-making blast furnaces, and particularly relates to a blast furnace tuyere small jacket water temperature difference on-line monitoring system.
Background
The tuyere burnthrough caused by the blast furnace tuyere burning leakage is the most serious safety production accident in the blast furnace ironmaking production. The blast furnace tuyere burning-through accident caused by normal production of the blast furnace has serious consequences. Along with the continuous intensified smelting of the blast furnace, the abrasion of the tuyere can be increased, if the tuyere is not managed properly in normal work and is not treated in a prevention way, once a burn-through accident happens, the blast furnace is stopped suddenly, and a large amount of high-temperature molten liquid iron slag can be sprayed out of the blast furnace from the burn-through part, so that the burn accident of equipment and personnel is caused. The property loss is huge, the economic benefit is reduced, and the negative influence is caused to the safe production environment of an enterprise. Meanwhile, the specific time and position of the tuyere burning-through are difficult to predict, or the treatment after the tuyere burning-through is not timely, so that the accident is further expanded, and the property loss and the casualty degree of personnel are increased.
In order to effectively prevent the tuyere from being burnt through, prolong the service life of the blast furnace, improve the economic benefit of enterprises, reduce the fixed cost of blast furnace ironmaking, improve the labor productivity and really achieve the effects of high quality, high efficiency, safety, low carbon and environmental protection, various measures for preventing the tuyere from being burnt through are researched from the aspects of blast furnace operation, management, maintenance and the like. The tuyere small set temperature difference on-line alarm system is one of the important technological measures for ensuring the safe production of blast furnace. The technology mainly judges the thermal load of the blast furnace tuyere small sleeve according to the temperature difference of water inlet and outlet of the tuyere small sleeve, timely masters the working state of the blast furnace tuyere, prevents the tuyere from leaking water and burns through accidents in advance.
Therefore, the invention provides an online monitoring system for the temperature difference of the small jacket water of the blast furnace tuyere.
Disclosure of Invention
Aiming at the problem that the tuyere is in danger of being burnt through during normal production of a blast furnace in the prior art and once the tuyere is burnt through, irreparable huge loss is caused, the invention mainly aims to provide the blast furnace tuyere small jacket water temperature difference online monitoring system.
In order to solve the technical problem, the invention provides an online monitoring system for the temperature difference of small water jackets at a blast furnace tuyere, which comprises a power supply device, a temperature sensor, a gateway module, a central processing unit, a display, a memory, a frequency converter, a motor, a water pump, a condenser and an alarm;
the power supply device is used for supplying electric energy to the temperature sensor, the central processing unit, the display, the memory, the frequency converter and the motor;
the temperature sensor comprises a water inlet pipe temperature sensor and a water outlet pipe temperature sensor, the water inlet pipe temperature sensor is installed on a blast furnace tuyere water inlet pipe, the water outlet pipe temperature sensor is installed on a blast furnace tuyere water outlet pipe, the water inlet pipe temperature sensor and the water outlet pipe temperature sensor are used for detecting the water temperature of a blast furnace tuyere water inlet pipe and a blast furnace tuyere water outlet pipe, and the signal output end of the temperature sensor is connected with the signal input end of the gateway module;
the signal output end of the gateway module is connected with the input end of a central processing unit and used for transmitting temperature detection data to the central processing unit, the output end of the central processing unit is in signal connection with a memory and used for storing water temperature data information of a water inlet pipe and a water outlet pipe, the signal output end of the central processing unit is connected with the signal input end of a motor frequency converter and used for changing the flow rate and the pressure of a water pump by controlling the working frequency of a motor, and the signal output end of the central processing unit is in signal connection with an alarm;
the water outlet of the motor water pump is communicated with the water inlet of the condenser, the water outlet of the condenser is communicated with the water inlet of the blast furnace tuyere through a pipeline, and the water outlet of the blast furnace tuyere is communicated with the water inlet of the condenser through a pipeline.
Further, the temperature sensor is a PT100 model high-precision armored temperature sensor.
Furthermore, the signal output end of the central processing unit is in data connection with a display and is used for displaying temperature data detected by the temperature sensor in real time.
Further, the temperature difference range of the water temperature of the water inlet and outlet pipe is set to be 2-10 ℃ by the central processing unit.
The invention has the beneficial effects that:
the invention judges the thermal load of the blast furnace tuyere small sleeve according to the temperature difference of the water inlet and the water outlet of the tuyere small sleeve, timely masters the working state of the blast furnace tuyere, and automatically adjusts the flow rate and the pressure of the water outlet of the water pump by utilizing the frequency converter, thereby adjusting the water cooling speed of the blast furnace tuyere small sleeve, preventing the water leakage of the tuyere from burning through accidents in advance and avoiding the occurrence of the tuyere leakage and burnthrough accidents.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic flow chart of the temperature difference on-line monitoring system of the present invention.
FIG. 2 is a schematic diagram of a variable-frequency speed-regulating framework of the water pump of the invention.
Fig. 3 is a schematic diagram of a temperature acquisition circuit of the temperature sensor of the present invention.
FIG. 4 is a display screen data display page of the present invention.
Detailed Description
The present invention is further illustrated by the following figures and examples, which include, but are not limited to, the following examples.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
as shown in fig. 1 to 4, the online monitoring system for the temperature difference of the blast furnace tuyere small jacket water comprises a power supply device, a temperature sensor, a gateway module, a central processing unit, a display, a memory, a frequency converter, a motor, a water pump, a condenser and an alarm;
the power supply device is used for supplying electric energy to the temperature sensor, the central processing unit, the display, the memory, the frequency converter and the motor;
the temperature sensor comprises a water inlet pipe temperature sensor and a water outlet pipe temperature sensor, the water inlet pipe temperature sensor is installed on a blast furnace tuyere water inlet pipe, the water outlet pipe temperature sensor is installed on a blast furnace tuyere water outlet pipe, the water inlet pipe temperature sensor and the water outlet pipe temperature sensor are used for detecting the water temperature of a blast furnace tuyere water inlet pipe and a blast furnace tuyere water outlet pipe, and the signal output end of the temperature sensor is connected with the signal input end of the gateway module;
the signal output end of the gateway module is connected with the input end of a central processing unit and used for transmitting temperature detection data to the central processing unit, the output end of the central processing unit is in signal connection with a memory and used for storing water temperature data information of a water inlet pipe and a water outlet pipe, the signal output end of the central processing unit is connected with the signal input end of a motor frequency converter and used for changing the flow rate and the pressure of a water pump by controlling the working frequency of a motor, and the signal output end of the central processing unit is in signal connection with an alarm;
the water outlet of the motor water pump is communicated with the water inlet of the condenser, the water outlet of the condenser is communicated with the water inlet of the blast furnace tuyere through a pipeline, and the water outlet of the blast furnace tuyere is communicated with the water inlet of the condenser through a pipeline.
Further, the temperature sensor is a PT100 model high-precision armored temperature sensor.
Furthermore, the signal output end of the central processing unit is in data connection with a display and is used for displaying temperature data detected by the temperature sensor in real time.
Further, the temperature difference range of the water temperature of the water inlet and outlet pipe is set to be 2-10 ℃ by the central processing unit.
The invention can effectively and timely detect the temperature difference of inlet and outlet water of the tuyere small sleeve by installing the temperature sensor and setting an alarm value and a historical trend when the data runs normally on the PLC picture of the blast furnace, thereby preventing the occurrence of the accident of water leakage and burning through of the tuyere in advance. Once a burnthrough accident occurs, a large amount of red-hot furnace burden is sprayed out of the furnace, the blast furnace is emergently shut down, large-area slag filling at the tuyere and other unforeseen accidents are caused, when the temperature difference exceeds a set range value, an alarm automatically alarms to remind workers of finding the cause of the problem and discharge hidden dangers, and meanwhile, a central processing unit outputs a signal to control a frequency converter, so that the rotating speed of a motor is adjusted, the flow rate and the water outlet pressure of a water pump are improved, the water cooling and cooling speed is accelerated, the purpose of rapidly reducing a small tuyere sleeve of the blast furnace is achieved, the heat load of the small tuyere sleeve of the blast furnace is judged according to the temperature difference of inlet and outlet water of the small tuyere sleeve, the working state of the tuyere of the blast furnace is grasped in time, advance prevention is achieved, the occurrence of the burnthrough accident due to water leakage at the tuyere is avoided, and the safe operation of the blast furnace is ensured.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.
Claims (4)
1. A blast furnace tuyere small jacket water temperature difference on-line monitoring system is characterized by comprising a power supply device, a temperature sensor, a gateway module, a central processing unit, a display, a memory, a frequency converter, a motor, a water pump, a condenser and an alarm;
the power supply device is used for supplying electric energy to the temperature sensor, the central processing unit, the display, the memory, the frequency converter and the motor;
the temperature sensor comprises a water inlet pipe temperature sensor and a water outlet pipe temperature sensor, the water inlet pipe temperature sensor is installed on a blast furnace tuyere water inlet pipe, the water outlet pipe temperature sensor is installed on a blast furnace tuyere water outlet pipe, the water inlet pipe temperature sensor and the water outlet pipe temperature sensor are used for detecting the water temperature of a blast furnace tuyere water inlet pipe and a blast furnace tuyere water outlet pipe, and the signal output end of the temperature sensor is connected with the signal input end of the gateway module;
the signal output end of the gateway module is connected with the input end of a central processing unit and used for transmitting temperature detection data to the central processing unit, the output end of the central processing unit is in signal connection with a memory and used for storing water temperature data information of a water inlet pipe and a water outlet pipe, the signal output end of the central processing unit is connected with the signal input end of a motor frequency converter and used for changing the flow rate and the pressure of a water pump by controlling the working frequency of a motor, and the signal output end of the central processing unit is in signal connection with an alarm;
the water outlet of the motor water pump is communicated with the water inlet of the condenser, the water outlet of the condenser is communicated with the water inlet of the blast furnace tuyere through a pipeline, and the water outlet of the blast furnace tuyere is communicated with the water inlet of the condenser through a pipeline.
2. The blast furnace tuyere small jacket water temperature difference on-line monitoring system of claim 1, wherein the temperature sensor is a PT100 model high precision armored temperature sensor.
3. The blast furnace tuyere small jacket water temperature difference on-line monitoring system of claim 1, wherein the signal output end of the central processing unit is in data connection with a display for displaying temperature data detected by the temperature sensor in real time.
4. The blast furnace tuyere small jacket water temperature difference on-line monitoring system of claim 1, wherein the temperature difference range of the water temperature of the water inlet and outlet pipe is set to 2-10 ℃ via the central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110300134.5A CN113176741A (en) | 2021-03-22 | 2021-03-22 | Blast furnace tuyere small jacket water temperature difference online monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110300134.5A CN113176741A (en) | 2021-03-22 | 2021-03-22 | Blast furnace tuyere small jacket water temperature difference online monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113176741A true CN113176741A (en) | 2021-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110300134.5A Pending CN113176741A (en) | 2021-03-22 | 2021-03-22 | Blast furnace tuyere small jacket water temperature difference online monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113176741A (en) |
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2021
- 2021-03-22 CN CN202110300134.5A patent/CN113176741A/en active Pending
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