CN220060756U - Valve position display device of blast furnace cold air discharging valve - Google Patents
Valve position display device of blast furnace cold air discharging valve Download PDFInfo
- Publication number
- CN220060756U CN220060756U CN202321702078.9U CN202321702078U CN220060756U CN 220060756 U CN220060756 U CN 220060756U CN 202321702078 U CN202321702078 U CN 202321702078U CN 220060756 U CN220060756 U CN 220060756U
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- valve position
- signal
- potentiometer
- cold air
- display device
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- 238000007599 discharging Methods 0.000 title description 2
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000000007 visual effect Effects 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
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Abstract
The utility model discloses a valve position display device of a blast furnace cold air blow-off valve, which comprises a potentiometer, a valve position transmitter and a signal conversion system, wherein the potentiometer is arranged on an output shaft transmission gear of an electric actuator of the blow-off valve, the rotation of the gear drives a sliding rheostat on the potentiometer to change resistance, a resistance signal is transmitted to the valve position transmitter through a cable, the valve position transmitter converts the resistance signal of the potentiometer into a current signal and outputs the current signal to the signal conversion system, and the signal conversion system converts the current signal into corresponding valve position visual data, so that the error is reduced and the maintenance is convenient.
Description
Technical Field
The utility model discloses a valve position display device of a blast furnace cold air discharge valve, and belongs to the technical field of hot blast stove systems of metallurgical equipment.
Background
Blast furnace cold air blow-off valve position displays are typically integrated inside the valve body actuators. The electronic components are operated in a high-temperature environment for a long time near a high-temperature medium (the temperature of the internal working condition is 60-120 ℃), so that the problems of large valve position display error, fluctuation of valve position display, frequent failure rate and the like of the blast furnace cold air discharge valve are caused. And secondly, because the valve position display device is integrated in the actuating mechanism, the space is more dense, the heat is not easy to dissipate, and the service life of the valve position display device is shortened.
Disclosure of Invention
The utility model provides a valve position display device of a blast furnace cold air discharge valve, which solves the technical problems of large valve position display error, fluctuation of valve position display and frequent failure rate of the cold air discharge valve in a high-temperature environment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the valve position display device of the blast furnace cold air blow-off valve comprises a potentiometer, a valve position transmitter and a signal conversion system, wherein the potentiometer is arranged on an output shaft transmission gear of an electric actuator of the blow-off valve, the valve position transmitter converts a resistance signal of the potentiometer into a current signal and outputs the current signal to the signal conversion system, and the signal conversion system converts the current signal into corresponding valve position visual data.
The signal conversion system comprises a power distribution conversion isolator and a DC24V power supply, wherein the power distribution conversion isolator is arranged in the electromagnetic station and is used for isolating and converting a current signal transmitted by the valve position transmitter into a standard signal and connecting the standard signal output to the PLC room
The PLC room comprises a PLC analog module, signals are transmitted to the computer after passing through the PLC analog module, the computer analyzes and programs the received information, and the display of the operation picture accords with the display of the actual valve position on site.
The potentiometer resistance signal is transmitted through a shielded cable.
The transmission cable of the potentiometer resistance signal adopts the whole cable to connect, the middle is not connected, and the length is less than 100 meters.
Compared with the prior art, the utility model has the following beneficial effects:
1. the potentiometer is directly arranged on an output shaft transmission gear of the electric actuator, the sliding rheostat is driven to change through gear rotation, resistance change is transmitted to the valve position transducer and the signal conversion system through a cable, and the valve position display device is far away from the high-temperature and noise environment, so that a high-precision valve position is obtained.
2. The distribution converter is arranged inside the electromagnetic station, so that the measurement and the fault judgment are convenient.
3. And the computer is used for analyzing and programming signals of the PLC analog module so as to directly display visual valve position data.
4. The shielding cable is used for reducing external electromagnetic interference and improving signal transmission precision.
5. The cable with the length within 100 meters is used without joints, so that faults can be effectively reduced, and signal transmission errors can be reduced.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model
In the figure: 1. a potentiometer; 2. a valve position transducer; 3. a power distribution conversion isolator; 4. a PLC analog module; 5. a computer; 6. an electric actuator; 7. a shielded cable; 8. DC24V power supply.
Detailed Description
The utility model is further described with reference to the drawings and detailed description which follow:
as shown in figure 1, the valve position display device of the blast furnace cold air blow-off valve comprises a potentiometer 1, a valve position transmitter 2 and a signal conversion system, wherein the potentiometer 1 is arranged on an output shaft transmission gear of an electric actuator 6 of the blow-off valve, the rotation of the gear can drive the resistance of a sliding rheostat on the potentiometer 1 to change, a resistance signal is transmitted to the valve position transmitter 2 through a cable, the valve position transmitter 2 converts the resistance signal of the potentiometer 1 into a current signal and outputs the current signal to the signal conversion system, and the signal conversion system converts the current signal into corresponding valve position visual data.
As shown in fig. 1, the signal conversion system comprises a power distribution conversion isolator 3 and a DC24V power supply 8, wherein the power distribution conversion isolator 3 is arranged inside an electromagnetic station, the power distribution conversion isolator 3 is used for isolating and converting a current signal transmitted by a valve position transmitter 2 into a standard signal, and the standard signal is output and connected to a PLC (programmable logic controller) room.
As shown in fig. 1, the PLC room includes a PLC analog module, and signals are transmitted to the computer 5 after passing through the PLC analog module 4, and the computer 5 performs analysis programming on the received information, and the display of the operation screen accords with the actual valve position display on site.
As shown in fig. 1, the potentiometer 1 resistance signal is transmitted through a shielded cable 7.
As shown in figure 1, the transmission cable of the resistance signal of the potentiometer 1 is connected by adopting a whole cable, and the middle part of the transmission cable is free from joints and has the length of less than 100 meters.
When the intelligent automatic valve position monitoring device works, the potentiometer 1 is arranged on an output shaft transmission gear of the electric actuator 6 of the air release valve, the rotation of the gear can drive the sliding rheostat on the potentiometer 1 to change in resistance, a resistance signal is transmitted to the valve position transmitter 2 through a cable, the collected valve position resistance is converted into a current signal of 4-20mA, the current signal is transmitted to the signal conversion system through the shielded cable 7, the signal conversion system comprises the power distribution conversion isolator 3 and a DC24V power supply 8 for providing a stable power supply for the power distribution conversion isolator, the signal conversion system isolates and converts the current signal into a standard signal, the standard signal is connected to the PLC analog module 4, the computer 5 is connected to carry out analysis programming, and the accurate actual valve position is displayed on an operation picture. The technical problems of large valve position display error, fluctuation of valve position display and frequent failure rate of the cold air discharge valve in a high-temperature environment are effectively solved, meanwhile, the cold air discharge valve can be rapidly checked and processed in a failure state, the overhaul is convenient, the labor productivity is improved, and the risk factors are reduced.
Claims (5)
1. A blast furnace cold air blow-off valve position display device is characterized in that: the intelligent valve position monitoring system comprises a potentiometer (1), a valve position transmitter (2) and a signal conversion system, wherein the potentiometer (1) is arranged on an output shaft transmission gear of an electric actuator (6) of a vent valve, the valve position transmitter (2) converts a resistance signal of the potentiometer (1) into a current signal and outputs the current signal to the signal conversion system, and the signal conversion system converts the current signal into corresponding valve position visual data.
2. The blast furnace cold air release valve position display device according to claim 1, wherein: the signal conversion system comprises a power distribution conversion isolator (3) and a DC24V power supply (8) which are arranged in the electromagnetic station, wherein the power distribution conversion isolator (3) is used for isolating and converting a current signal transmitted by the valve position transmitter (2) into a standard signal, and the standard signal is output and connected to the PLC room.
3. The blast furnace cold air release valve position display device according to claim 2, wherein: the PLC room comprises a PLC analog module (4), signals are transmitted to a computer (5) after passing through the PLC analog module (4), the computer (5) analyzes and programs the received information, and the display of the operation picture accords with the actual valve position display on site.
4. The blast furnace cold air release valve position display device according to claim 1, wherein: the resistance signal of the potentiometer (1) is transmitted through a shielded cable (7).
5. The blast furnace cold air release valve position display device according to claim 1, wherein: the transmission cable of the resistance signal of the potentiometer (1) is connected by adopting the whole cable, the middle is free from a joint, and the length is less than 100 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321702078.9U CN220060756U (en) | 2023-06-30 | 2023-06-30 | Valve position display device of blast furnace cold air discharging valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321702078.9U CN220060756U (en) | 2023-06-30 | 2023-06-30 | Valve position display device of blast furnace cold air discharging valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220060756U true CN220060756U (en) | 2023-11-21 |
Family
ID=88763513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321702078.9U Active CN220060756U (en) | 2023-06-30 | 2023-06-30 | Valve position display device of blast furnace cold air discharging valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220060756U (en) |
-
2023
- 2023-06-30 CN CN202321702078.9U patent/CN220060756U/en active Active
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