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Safety monitoring method for circulating water pump

A circulating water pump and safety monitoring technology, which is applied in pump control, non-variable pumps, machines/engines, etc., can solve problems such as inability to intuitively judge whether the head of the circulating water pump is within the safe working range

Active Publication Date: 2014-10-22
CHINA SHENHUA ENERGY CO LTD +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Under the existing monitoring method, the operator can only judge whether the circulating water pump is working in the safe working range according to the state monitoring curve of the circulating water pump, but cannot intuitively judge whether the head of the circulating water pump is in a safe range under a certain flow rate. The scope of work

Method used

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  • Safety monitoring method for circulating water pump
  • Safety monitoring method for circulating water pump

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Embodiment approach

[0021] In addition, although the corresponding position is within the associated safe working range, if the corresponding position is close to the upper or lower limit of the safe working range, it indicates that the operation of the circulating water pump associated with the corresponding position may be at risk. Carry out risk warning. Thus, according to an embodiment of the present invention, the method may further include:

[0022] If the corresponding position is within the safe working range associated with the corresponding position, and the head value corresponding to the corresponding position is greater than 80% of the upper limit of the safe working range or less than 80% of the lower limit of the safe working range 120%, then a risk warning is performed to indicate that there is a risk in the operation of the circulating water pump associated with the corresponding position.

[0023] In addition, an optical alarm device (such as a lamp) and / or an acoustic alarm de...

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Abstract

The invention discloses a safety monitoring method for circulating water pumps. The method comprises: establishing a coordinate system about the number of circulating water pumps effectively acting on the same object and the head of the circulating water pump; defining at least one safe working position in the coordinate system Range, each safe working range is associated with a number of circulating water pumps effectively acting on the same object; the number of circulating water pumps effectively acting on the same object and the head of the collected circulating water pumps correspond to the corresponding coordinates in the coordinate system position, and determine whether the corresponding position is within the safe working range or outside the safe working range.

Description

technical field [0001] The invention relates to a safety monitoring method for circulating water pumps, in particular to a safety monitoring method for circulating water pumps in thermal power plants. Background technique [0002] In thermal power generation enterprises, the distributed control system is widely used to obtain data from each equipment, and then transmit the data to the real-time database, so that managers can monitor the operation of the entire enterprise equipment. Real-time database and historical database can store multi-year data of each process point. It provides a clear and precise picture of the operation situation, and the user can browse the current data of the power plant and review the historical data. [0003] Taking the circulating water pump as an example, the status monitoring curve of the circulating water pump that the operator can see is the time axis as the abscissa, and the status parameters such as speed, flow and head as the ordinate. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D15/00
Inventor 王德军何宁孟炜陈程赵书君甘超奇赵军李绍卓晋世仲
Owner CHINA SHENHUA ENERGY CO LTD