Method for on-line detecting scale limit value of container and burned protection
A container and scale technology, which is applied in the field of scale detection in heating containers, can solve problems such as the undiscovered scale limit automatic detection heating container dry-burning automatic protection technical scheme, and achieve the effect of preventing dry-burning
Active Publication Date: 2012-09-05
YUNNAN AEROSPACE IND
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Problems solved by technology
[0004] Through the patent search, the automatic detection of the scale limit and the automatic protection of the heating container for dry burning have not been found.
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[0017] The embodiment of the present invention combines the attached figure 2 described as follows:
[0018] figure 2 The device consists of a heat source 1, a heating container 2, a steam pipe 3, a frying pan 4, a water supply pipe 5, a liquid level sensor 6, a water temperature sensor 7, a wire harness 8, a drain pipe 9, and a controller 10.
[0019] Wherein: the water temperature sensor 7 is sealed and connected to the heating container 2 through a threaded structure; the signal of the water temperature sensor 7 is connected to the controller 10 through the wiring harness 8 . Water is poured into the heating container 2 through the water supply pipe 5, and the remaining water in the heating container 2 is discharged through the drain pipe. The steam in the heating container 2 is exported and utilized through the steam pipe 3 .
[0020] Through experiments, we stipulate that when the scale thickness is 0.6mm, it is the prompt limit. Under the specified conditions, the ...
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The invention provides a method for detecting a scale limit value of a container for burned protection. The method comprises the following steps of: arranging a water temperature sensor, a liquid level sensor and a controller which takes a microprocessor as a core and is assisted and supported by software in a heating container, detecting the rise rate of a water temperature in a heating process in water of the heating container on line with the water temperature sensor by inputting a fixed thermal load, representing the change of a scale forming thickness with the change of the rise rate of the water temperature, and prompting to removing scales when rise rate of the water temperature is reduced to the limit value; and monitoring the internal temperature of the heating container in real time with the same water temperature sensor in the heating process, when the temperature is greater than a certain value of the boiling point of the water in the container, prompting to supplement water, and when water cannot be timely supplemented, automatically closing a heat source to prevent burning without water.
Description
technical field [0001] The invention belongs to the technical field of scale detection of heating containers, and relates to an automatic detection of scale limit value of a heating container and automatic protection against dry heating of the heating container. Background technique [0002] The thermal conductivity of scale is very poor, and its thermal conductivity is dozens of times or even hundreds of times smaller than that of metal. Research shows that when the thickness of scale reaches 0.8 mm, it will consume 4% more energy, reaching 2.82 mm, consuming 22% more energy. Reaching 12.7 mm will consume 70% more energy, so it is very important to detect and descale the scale of water in the work of energy conservation and environmental protection. For scale detection, researchers have done a lot of work. For example, Chinese patent 200620027243.5 discloses a water scale on-line detection device, which provides a method to characterize the scaling temperature difference un...
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IPC IPC(8): F24H9/20G01K1/02G01B21/08
Inventor 许春美汪一楠杨继泉田敏许利宝赵聪
Owner YUNNAN AEROSPACE IND