Intelligent acid-base control boiler blowdown system

A boiler and controller technology, used in steam boilers, steam boiler accessories, boiler cleaning devices, etc., can solve problems such as non-fouling control schemes and excessive emissions, and achieve the effects of reducing lag, stabilizing flow, and reducing lag errors.

Inactive Publication Date: 2017-09-01
ZHONGBEI UNIV
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Problems solved by technology

For example, 201510601501X automatically discharges sewage according to the steam-water ratio of the boiler, but the existing sewage discharge method is to automatically open the sewage valve when a certain parameter reaches a certain level, and close the sewage valve when a certain parameter drops to a certain low limit
Although this intermitt

Method used

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  • Intelligent acid-base control boiler blowdown system
  • Intelligent acid-base control boiler blowdown system
  • Intelligent acid-base control boiler blowdown system

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Embodiment Construction

[0041] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] In this article, if there is no special explanation, when it comes to formulas, " / " means division, and "×" and "*" mean multiplication.

[0043] like figure 1 As shown, a boiler thermal system includes at least one boiler for generating steam, and the boiler is connected with a monitoring and diagnosis controller 12 for data connection so as to monitor the operation of the boiler.

[0044] like figure 1 As shown, the boiler includes an automatic control blowdown system, and the boiler performs blowdown regularly, and the automatic control blowdown system is automatically controlled according to the pH value of the water in the boiler drum. The specific control system is as follows:

[0045] like figure 1 As shown, the boiler includes a flowmeter 3, a pressure gauge 4 and a thermometer 5 arranged on the steam outlet pipeline 9 f...

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PUM

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Abstract

The invention provides an intelligent control system which comprises a monitoring and diagnosing controller and a boiler. The boiler comprises a blowdown pipe arranged at the lower end of a boiler steam pocket, a blowdown valve is arranged on the blowdown pipe, one end of the blowdown valve is connected with a valve adjusting device, the valve adjusting device is in data connection with the monitoring and diagnosing controller, and therefore valve aperture data can be transmitted to the monitoring and diagnosing controller; meanwhile, a command is received from the monitoring and diagnosing controller, and the aperture of the blowdown valve is adjusted; the steam pocket further comprises a water quality analyzer which comprises a PH value testing unit so as to measure the PH value of water in the steam pocket, and the water quality analyzer is in data conenction with the monitoring and diagnosing controller, and therefore measured PH data are conveniently received; and the boiler is subject to blowdown, the blowdown time and blowdown speed are automatically set by the central monitoring and diagnosing controller according to the measured PH value, and therefore the blowdown amount is automatically controlled. According to the intelligent control system, the blowdown amount is automatically calculated; and compared with the prior art, the hysteretic nature caused by automatic control in the prior art is reduced, and the optimal blowdown control can be achieved.

Description

technical field [0001] The invention belongs to the field of automatic control boilers and belongs to the field of F22. Background technique [0002] When the steam boiler is in operation, the boiler water is concentrated as the steam is produced. When the salt concentration rises to a certain level, the pot water will produce bubbles, soda and water will rise together, and a large amount of water will be carried in the steam, which will cause a serious false water level and make the control of the furnace condition unstable. Therefore, the salt concentration of boiler water must be controlled to ensure steam quality and boiler operation safety. [0003] my country has national standards for the water quality of industrial boilers. For example, in GB1576-2001, for steam boilers with a pressure of 1.6-2.5Mpa and a superheater, it is stipulated that the dissolved solids concentration (TDS) of the boiler water shall not exceed 2500mg / L. Among them, the dissolved solids can be...

Claims

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Application Information

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IPC IPC(8): F22B37/56
CPCF22B37/42F22B37/54F22B37/565
Inventor 郭荣刘彦臣韩冰刘勇齐超宋金圣
Owner ZHONGBEI UNIV
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