CN216132527U - Double-color water level monitoring device for long-life steel mill boiler - Google Patents
Double-color water level monitoring device for long-life steel mill boiler Download PDFInfo
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- CN216132527U CN216132527U CN202121833995.1U CN202121833995U CN216132527U CN 216132527 U CN216132527 U CN 216132527U CN 202121833995 U CN202121833995 U CN 202121833995U CN 216132527 U CN216132527 U CN 216132527U
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- water level
- heat insulation
- insulation box
- light source
- sealed heat
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 17
- 238000012806 monitoring device Methods 0.000 title claims abstract description 17
- 239000010959 steel Substances 0.000 title claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000009413 insulation Methods 0.000 claims abstract description 35
- 239000011521 glass Substances 0.000 claims abstract description 29
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000003860 storage Methods 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 abstract description 2
- 239000002826 coolant Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000005394 sealing glass Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A long-life steel mill boiler bicolor water level monitoring device comprises a water level display mechanism and a light source part, wherein the water level display mechanism is a red glass tube and a green glass tube which are refracted after being irradiated by the light source and correspond to the change of the water level, and the upper end and the lower end of the water level display mechanism are respectively communicated with a steam side pipeline and a liquid side pipeline of a boiler drum; the light source part comprises a light belt and a filter, the light belt and the filter are installed in a sealed heat insulation box, the sealed heat insulation box is communicated with the nitrogen storage tank through a pipeline, a stop valve is arranged in the pipeline, the air inlet and the air outlet are respectively arranged on the upper side and the lower side of the sealed heat insulation box, and the air outlet guides the nitrogen after temperature adjustment out of the sealed heat insulation box. The lamp strip of the monitoring device is separated from the surrounding environment by the sealed heat insulation box, and nitrogen is used as a cooling medium, so that the monitoring device is not influenced by a high-temperature high-humidity environment in a smelting workshop, the operation is safe and reliable, and the surrounding environment is not endangered even if leakage occurs.
Description
Technical Field
The utility model relates to a water level indicating device applied to a boiler, belonging to the technical field of measurement.
Background
In the metallurgical, chemical and petroleum industries, there are many industrial boilers or other pressure vessels, most of which use high-pressure, ultrahigh-pressure or subcritical boilers, and the bicolor water level gauge is an instrument used on a boiler drum or other pressure vessels for monitoring water level changes. Whether the double-color water level meter can be used safely and reliably is one of important factors for ensuring the safe operation of the boiler. The double-color water level meters arranged on two sides of the boiler drum can observe the refraction of the special light source arranged in a matched mode through the observation window, the water level change situation of the boiler drum can be clearly seen, the gas phase is red, the water phase is green, and the color columns can clearly reflect the change situation of the water level in the boiler drum through the observation window. The water level changes can be displayed in real time through an industrial television of a main control room by observing or installing an industrial camera on site in a matched manner, so that the changes of the liquid level of the boiler drum can be mastered at any time.
In the water level gauge, the light-emitting element providing the light source is a light-emitting diode, the allowable working temperature of the light-emitting diode is limited, but in the metallurgical industry, the high-temperature working environment is normal, so the light-emitting diode is often required to work at the environment temperature exceeding the allowable environment temperature, and the service life of the light-emitting diode is very short. Especially, faults of heat preservation layer falling, steam leakage, hot air leakage and the like often occur in a steel mill production line, the temperature of a steam phase and a water phase of a boiler connected with a water level meter is extremely high, a light source generates heat in power-on use, and influence of high environmental temperature, external factors and the like exists, so that the service cycle of a light source strip is shortened, and although the heat dissipation holes are arranged on the shell, the heat dissipation effect or extremely poor heat dissipation effect cannot be achieved under severe high-temperature environment, so that the light source is damaged even more. Once the light source is damaged, the two-color water level gauge loses its monitoring function, which is very dangerous for the safe operation of the boiler.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a long-life steel mill boiler two-color water level monitoring device aiming at the defects of the prior art, which can provide a safe and stable working environment for a light source of the monitoring device, prolong the service life of a water level gauge and ensure the safe and stable operation of a boiler.
The problems of the utility model are solved by the following technical scheme:
a long-life steel mill boiler bicolor water level monitoring device comprises a water level display mechanism and a light source part, wherein the water level display mechanism is a red glass window and a green glass window which are refracted after being irradiated by the light source and correspond to the change of the water level, and the upper end and the lower end of the water level display mechanism are respectively communicated with a steam side pipeline and a liquid side pipeline of a boiler steam drum; the light source part comprises a lamp belt and a filter lens, the filter lens is arranged between the lamp belt and the water level display mechanism, the lamp belt and the filter lens are arranged in a sealed heat insulation box, the sealed heat insulation box is a sealed metal shell, and the box surfaces of the sealed heat insulation box, corresponding to a red glass window and a green glass window in the water level display mechanism, are transparent glass; the sealed heat insulation box is communicated with the nitrogen storage tank through a pipeline, a stop valve is arranged in the pipeline, the air inlet and the air outlet are respectively arranged at the upper side and the lower side of the sealed heat insulation box, and the nitrogen gas after temperature adjustment is guided out of the sealed heat insulation box through the air outlet.
In the long-life steel mill boiler two-color water level monitoring device, the four lamp belts are respectively a red light source lamp belt and a green light source lamp belt which are arranged in parallel; the filter glass is two parallel filter glass, which are red filter glass and green filter glass respectively, and the red light source lamp belt and the green light source lamp belt are correspondingly configured with the red filter glass and the green filter glass respectively.
Above-mentioned double-colored water level monitoring device of long-life steel mill boiler adds temperature sensor and automatically controlled valve in the nitrogen pipeline, the solenoid valve is connected in the nitrogen pipeline, temperature sensor sets up in sealed hot box, and the signal of telecommunication of temperature sensor output passes through the break-make of CPU control solenoid valve.
The double-color water level monitoring device for the long-life steel mill boiler is additionally provided with the filtering and reducing valve in the nitrogen pipeline.
The double-color water level monitoring device for the long-service-life steel mill boiler is additionally provided with the communicating tube type water level meter, and the communicating tube type water level meter is connected to a steam side pipeline and a liquid side pipeline of a boiler drum through the three-way pipe fitting.
Advantageous effects
The lamp strip of the monitoring device is separated from the surrounding environment through the sealed heat insulation box, so that the lamp strip is not influenced by a high-temperature high-humidity environment in a smelting workshop, meanwhile, the lamp strip is cooled through flowing nitrogen, and high-temperature high-humidity gas is led out, so that the safety of the operation of the lamp strip is ensured. A temperature sensor is arranged in the sealed heat insulation box to detect the temperature in the box, the on-off of the electromagnetic valve is controlled, and flowing nitrogen is used for ensuring that the light source always works in a proper environment. The utility model uses nitrogen as cooling medium, has safe and reliable operation, and does not endanger the surrounding environment even if leakage occurs.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view taken along line a-a of fig. 1.
In the drawings, the reference numerals denote: 1. boiler steam drum, 2, communicating pipe fluviograph, 3, water level display mechanism, 4, sealing glass, 5, temperature sensor, 6, electric control valve, 7, filtering pressure reducing valve, 8, stop valve, 9, nitrogen cylinder, 10, lamp area, 11, liquid side connecting pipe, 12, steam side connecting pipe, 13, optical filter, 14, air inlet nozzle, 15, air outlet nozzle, 16, sealing heat insulation box.
Detailed Description
The utility model provides a safe and effective boiler water level monitoring device, which comprises a water level display mechanism 3 and a light source part, wherein the water level display mechanism 3 is a red glass window and a green glass window which are refracted after being irradiated by the light source and correspond to the change of the water level, and the upper end and the lower end of the water level display mechanism 3 are respectively communicated with a steam side pipeline and a liquid side pipeline of a boiler steam drum; the light source part comprises a lamp strip 10 and a filter lens 13, the filter lens is arranged between the lamp strip 10 and the water level display mechanism, the lamp strip 10 and the filter lens 13 are arranged in a sealed heat insulation box 16, the sealed heat insulation box 16 is a sealed metal shell, and the box surface of the sealed heat insulation box corresponding to a glass window of the multi-window water level meter is transparent glass; the sealed heat insulation box is communicated with the nitrogen storage tank through a pipeline, a stop valve 8 is arranged in the pipeline, an air inlet 14 and an air outlet 15 are respectively arranged at the upper side and the lower side of the sealed heat insulation box, and the air outlet guides the nitrogen after temperature adjustment out of the sealed heat insulation box 16.
The sealed heat insulation box 16 is fully sealed, the transparent glass on the outer side is 4mm thick, and the periphery of the sealed box is sealed by a heat-resistant silicon rubber strip and is compressed and sealed by a metal pressing strip. The air inlet nozzle 14, the air outlet nozzle 15 and the connecting piece are connected with a phi 10 plastic sleeve copper air source pipe. For cooling, 3 sets of air inlet nozzles and air outlet nozzles are arranged, and three exhaust metal hoses are used for guiding waste nitrogen to the outdoor. The sealed and insulated tank and the water level display mechanism can be connected together by an extended wall plate (shown by a thick dotted line in fig. 1).
The resistance for measuring temperature adopts a watt-temperature measuring resistance of Pt100 phi 6 x 20, a thermistor Pt100 is selected, the capacity of the normally-open point of the relay for controlling output can be selected to drive the electromagnetic valve, otherwise, an intermediate relay is required to be matched. The temperature in the sealed heat-insulating box 16 is set to 30 ℃ (which can be set according to actual conditions and requirements). Opening a stop valve 8, adjusting the pressure of a filter pressure reducing valve 7 to 0.05-0.15 MPa (the pressure behind the pressure reducing valve can be adjusted according to the temperature reduction condition), when the displayed temperature is more than 30 ℃, closing an electromagnetic valve at a controller contact (normally open point) to be electrified and opened, spraying nitrogen forms a conical air flow, ensuring that the nitrogen is thoroughly blown without dead angles, finally discharging the air flow out of a room through three air outlet nozzles and metal pipes below a sealed heat insulation box, simultaneously taking out the heat in the sealed heat insulation box in the processes of blowing and discharging the nitrogen (dry air pressure air), and ensuring that the temperature in the sealed heat insulation box is constant within a set temperature range. When the temperature in the sealed heat insulation box is reduced to below 30 ℃, the temperature signal control output is disconnected, the electromagnetic valve is powered off, and the nitrogen stops blowing. The temperature of a temperature control point and the range of connection or disconnection are conveniently set by the controller, and the two-way electromagnetic valve is ensured to be closed and opened electrically.
The light source of the utility model adopts four lamp strips. A plurality of LEDs with red and green colors are arranged on an insulating plate to form four lamp strips of red, green and red, the lamp strips are fixed on a support and then fixed at the rear part of a sealed heat insulation box. Meanwhile, four filters 13 made of red, green and red organic glass are arranged in front of the bracket. The boiler steam-water phase connected with the water level display mechanism 3 has extremely high temperature, the light source strip generates heat in the electrified use, and the high temperature of the environment temperature is roasted, so that the service cycle of the lamp strip is shortened, and the possibility of damage is caused at any time.
The temperature sensor 5 is arranged at the bottom of the sealed heat insulation box and is positioned at the middle-lower space closest to the actual temperature of the sealed heat insulation box, a phi 10 x 10 steel pipe is welded in a threading hole at the bottom, a connecting wire of a temperature measuring probe penetrates through the hollow space and is filled in the steel pipe at the position with sealant after the probe is installed in place, and the temperature sensor is connected with a temperature control element after the sealant is solidified and the wire is fixed.
Claims (5)
1. The double-color water level monitoring device for the long-service-life steel mill boiler is characterized by comprising a water level display mechanism (3) and a light source part, wherein the water level display mechanism (3) is a red glass window and a green glass window which are refracted after being irradiated by the light source and correspond to the change of the water level, and the upper end and the lower end of the water level display mechanism are respectively communicated with a steam side pipeline and a liquid side pipeline of a boiler steam drum; the light source part comprises a lamp belt (10) and a filter lens (13), the filter lens is arranged between the lamp belt (10) and the water level display mechanism (3), the lamp belt (10) and the filter lens (13) are installed in a sealed heat insulation box (16), the sealed heat insulation box (16) is a sealed metal shell, and the box surfaces of a red glass window and a green glass window in the sealed heat insulation box, which correspond to the water level display mechanism, are made of transparent glass; the sealed heat insulation box is communicated with the nitrogen storage tank through a pipeline, a stop valve (8) is arranged in the pipeline, an air inlet (14) and an air outlet (15) are respectively arranged at the upper side and the lower side of the sealed heat insulation box, and the air outlet guides the nitrogen after temperature adjustment out of the sealed heat insulation box (16).
2. The long life steel mill boiler bi-color water level monitoring device of claim 1, wherein said strips are four, respectively red light source strips and green light source strips in parallel; the two parallel filter glasses are red filter glass and green filter glass respectively, and the red light source lamp belts and the green light source lamp belts are correspondingly configured with the red filter glass and the green filter glass respectively.
3. The two-color water level monitor for the long-life steel mill boiler is characterized in that a temperature sensor (5) and a solenoid valve (6) are additionally arranged in a nitrogen pipeline, the solenoid valve (6) is connected in the nitrogen pipeline, the temperature sensor (5) is arranged in a sealed heat insulation box (16), and the electric signal output by the temperature sensor controls the on-off of the solenoid valve (6) through a CPU.
4. Two-color water level monitor for long-life steel mill boilers, according to claim 1, characterized by the addition of a filter and pressure relief valve (7) in the nitrogen line.
5. The long life steel mill boiler bi-color water level monitoring device according to claim 1, characterized by adding a communicating tube type water level gauge (2) connected in the steam side pipe and the liquid side pipe of the boiler drum through tee pipe fittings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121833995.1U CN216132527U (en) | 2021-08-06 | 2021-08-06 | Double-color water level monitoring device for long-life steel mill boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121833995.1U CN216132527U (en) | 2021-08-06 | 2021-08-06 | Double-color water level monitoring device for long-life steel mill boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216132527U true CN216132527U (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121833995.1U Expired - Fee Related CN216132527U (en) | 2021-08-06 | 2021-08-06 | Double-color water level monitoring device for long-life steel mill boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216132527U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962819A (en) * | 2023-02-07 | 2023-04-14 | 龙滩水电开发有限公司合山发电公司 | High-temperature-resistant drum bicolor water level gauge |
-
2021
- 2021-08-06 CN CN202121833995.1U patent/CN216132527U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962819A (en) * | 2023-02-07 | 2023-04-14 | 龙滩水电开发有限公司合山发电公司 | High-temperature-resistant drum bicolor water level gauge |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220325 |