CN201748399U - Scale limit value detection device - Google Patents
Scale limit value detection device Download PDFInfo
- Publication number
- CN201748399U CN201748399U CN2010202500362U CN201020250036U CN201748399U CN 201748399 U CN201748399 U CN 201748399U CN 2010202500362 U CN2010202500362 U CN 2010202500362U CN 201020250036 U CN201020250036 U CN 201020250036U CN 201748399 U CN201748399 U CN 201748399U
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- water temperature
- liquid level
- water
- heating container
- limit value
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Abstract
The utility model relates to a scale limit value detection device, which consists of a water temperature sensor, a liquid level sensor and a controller which takes a microprocessor as the core and is supported by software. The water temperature sensor is arranged in water on the upper part of a heating container and is positioned below the liquid level. The liquid level sensor is arranged at the highest water level position of the upper part of the heating container. The controller is connected with the water temperature sensor, the liquid level sensor and a heat source relay switch by wire harnesses. The scale limit value detection device has the advantages of carrying out real-time on-line detection on the internal temperature of the heating container, prompting descaling and preventing from boiling without water.
Description
Technical field
The utility model belongs to heating container incrustation scale detection technique, and the incrustation scale limit value that relates in particular to a kind of heating container detects alarm and heating container dry combustion method automatic safety device technical field of structures automatically.
Background technology
The non-constant of the thermal conductivity of incrustation scale, its thermal conductivity ratio metal little tens times even hundreds of times, studies show that: when incrustation scale thickness reaches 0.8 millimeter, will consume 4% the energy more, reach 2.82 millimeters, consume 22% the energy more, reach 12.7 millimeters, will consume 70% the energy more, so water fouling degree detecting and scale removal just be seemed very important in energy-conserving and environment-protective work.Existing water fouling on-line measuring device characterizes under the different condition by the size variation of utilizing the fouling temperature difference-thick poor coefficient of relationship is provided, the different feedback influences that the fouling difference variation increases for fouling thickness.The heat transfer efficiency that utilizes incrustation scale to influence seamless steel tube for boiler that also has causes variations in temperature to reflect the degree of fouling.
Though above-mentioned existing technology can reflect the degree of water fouling, still there are defectives such as detection method more complicated and inconvenience.Its structure must additionally add fouling test piece and heating element heater when system works, also must dismantle down the thickness that fouling is measured in the fouling test piece in the course of the work, this checkout gear troublesome poeration, and increased energy consumption.Need in system works, need extra adding and boiler combustion output with the heating element heater of constant power, increase energy consumption greatly.
Summary of the invention
The purpose of this utility model provides a kind of simple, convenient, reliable, automatic incrustation scale detection and dry combustion method protective device for the defective that overcomes above-mentioned prior art existence just, and the incrustation scale that it is applied to heating container detects and the dry combustion method protection.
The purpose of this utility model is achieved by the following technical solution.
The utility model device is that core and the controller that is aided with the software support are formed by cooling-water temperature sensor, liquid level sensor and band microprocessor, cooling-water temperature sensor is arranged in the upper water of heating container, be positioned under the liquid level, liquid level sensor is arranged on the peak level place, top of heating container; Controller is connected with cooling-water temperature sensor, liquid level sensor and thermal source relay switch by wire harness.
Liquid level sensor detects the moisturizing position, cooling-water temperature sensor detects the initial value and the variation of water temperature, controller is core with the microprocessor and is aided with software, and controller begins to detect and calculate the climbing of water temperature when the water level in the heat outputting load of selecting thermal source, the heating container and water temperature initial value are up to specification.
Because we contain scale forming matters such as calcium, magnesium in water used in everyday, in the process of heating, along with temperature, pressure rising solubility descends, and dissolved substance concentrates after steam is discharged, and reaches degree of super saturation formation fouling crystal settling and form incrustation scale on the heat-transfer surface of heating container.Incrustation scale has directly influenced the effect of heat exchange, causes the heat-transfer surface thermal conductivity to descend, and causes water temperature climbing decline in the container heating process.
The utility model is by the fixing thermic load of input, in the water of heating container certain volume, adopt the climbing of the online detection water temperature of cooling-water temperature sensor in a certain heating process, determine the thickness that incrustation scale forms, point out when the water temperature climbing drops to a certain limit value, this meaning incrustation scale thickness can't stand; And in heating process, monitor the heating container internal temperature in real time, when temperature surpasses the boiling temperature certain value of water in the container, point out, and close thermal source automatically and prevent dry combustion method with same cooling-water temperature sensor.
The beneficial effects of the utility model are, can carry out online constantly detection to the heating container internal temperature, prompting scale removal and prevent the advantage of dry combustion method.
Further set forth content of the present utility model below in conjunction with accompanying drawing embodiment.
Description of drawings
Fig. 1 is the utility model structural representation.
Label is among Fig. 1: 1 thermal source, 2 heating containers, 3 steam pipes, 4 frying pans, 5 filling pipes, 6 liquid level sensors, 7 cooling-water temperature sensors, 8 wire harness, 9 drainpipes, 10 controllers.
The specific embodiment
The utility model device is that core and the controller that is aided with the software support are formed by cooling-water temperature sensor, liquid level sensor and band microprocessor, cooling-water temperature sensor is arranged in the upper water of heating container, be positioned under the liquid level, liquid level sensor is arranged on the peak level place, top of heating container; Controller is connected with cooling-water temperature sensor, liquid level sensor and thermal source relay switch by wire harness.
The utility model embodiment 1 is described as follows in conjunction with the accompanying drawings:
Cooling-water temperature sensor 6 is sealably coupled on the heating container 2 by helicitic texture; The signal of cooling-water temperature sensor 6 is connected on the controller 10 by wire harness 8., the surplus water of 2 li of heating containers is discharged toward 2 li water fillings of heating container by filling pipe 5 by drainpipe.Steam in the heating container utilizes by steam pipe 3 outputs.
By experiment, our regulation when incrustation scale thickness during for 0.6mm for the prompting limit value, under defined terms, water temperature climbing speed at this moment is V=5 ℃/min
If testing conditions meets the requirements, be topped up with water in the heating container 2 (20L), the water temperature initial value is lower than 40 ℃, during thermal source output rated heat input, rated heat load (30000Kcal/h), controller 10 detects the water temperature in the heating container 2 in real time, picks up counting when water temperature rises to 40 ℃, and timing finishes when temperature reaches 80 ℃, time spent is 5min if this section water temperature rises, and then the climbing of water temperature is:
(80-40)/5＝8(℃/min)
This moment, the water temperature climbing speed was greater than the fouling limit value, and the controller waive presentment has only that controller just provides prompting when detecting the water temperature climbing speed less than fouling limit value V.
Heating container is in the process of work, because the discharge of steam, water in the container constantly reduces, dry combustion method will occur when untimely moisturizing, the temperature of heat-transfer surface rises rapidly, and the temperature of rising is greater than the boiling temperature of water, by test dry combustion method prompting limit value is set at 110 ℃ in this example, the protection limit value is set at 120 ℃, and when detected temperature during greater than 110 ℃, intelligent controller sends the dry combustion method prompting; When detected temperature during greater than 120 ℃, thermal source is closed in intelligent controller dry combustion method protection.
Claims (1)
1. incrustation scale limit value checkout gear is characterized in that: device is core by cooling-water temperature sensor, liquid level sensor and band microprocessor and is aided with the controller that software supports and forms; Cooling-water temperature sensor is arranged in the upper water of heating container, is positioned under the liquid level; Liquid level sensor is arranged on the peak level place, top of heating container; Controller is connected with cooling-water temperature sensor, liquid level sensor and thermal source relay switch by wire harness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202500362U CN201748399U (en) | 2010-07-07 | 2010-07-07 | Scale limit value detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202500362U CN201748399U (en) | 2010-07-07 | 2010-07-07 | Scale limit value detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201748399U true CN201748399U (en) | 2011-02-16 |
Family
ID=43583074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202500362U Expired - Fee Related CN201748399U (en) | 2010-07-07 | 2010-07-07 | Scale limit value detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201748399U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103860029A (en) * | 2013-12-24 | 2014-06-18 | 广东鼎燊科技有限公司 | System and method for automatically detecting water scale on steam cabinet |
| CN104172931A (en) * | 2014-07-18 | 2014-12-03 | 广东美的生活电器制造有限公司 | Scale detection method and scale detection device for water boiling utensil |
| CN109751761A (en) * | 2017-11-07 | 2019-05-14 | 三浦工业株式会社 | Electric boiler |
| CN110360534A (en) * | 2019-07-26 | 2019-10-22 | 宁波安佳卫厨电器有限公司 | A kind of method that steam generator and its internal control scale generate |
-
2010
- 2010-07-07 CN CN2010202500362U patent/CN201748399U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103860029A (en) * | 2013-12-24 | 2014-06-18 | 广东鼎燊科技有限公司 | System and method for automatically detecting water scale on steam cabinet |
| CN103860029B (en) * | 2013-12-24 | 2016-03-02 | 广东鼎燊科技有限公司 | A kind of steamer detects incrustation scale system and method automatically |
| CN104172931A (en) * | 2014-07-18 | 2014-12-03 | 广东美的生活电器制造有限公司 | Scale detection method and scale detection device for water boiling utensil |
| CN109751761A (en) * | 2017-11-07 | 2019-05-14 | 三浦工业株式会社 | Electric boiler |
| CN110360534A (en) * | 2019-07-26 | 2019-10-22 | 宁波安佳卫厨电器有限公司 | A kind of method that steam generator and its internal control scale generate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: YUNNAN AEROSPACE INDUSTRY CO., LTD. Free format text: FORMER NAME: YUNAN AERONAUTICS IND CORP. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 650229 Guandu City, Yunnan Province grand dam space city Patentee after: Yunnan Aerospace Industry Co., Ltd. Address before: 650229 Guandu City, Yunnan Province grand dam space city Patentee before: Yunan Aeronautics Ind Corp. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20180707 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |