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A growth function curve used to characterize the development state of leakage point in the whole life cycle

A full-life-cycle, leak-point technology, applied in electrical digital data processing, CAD numerical modeling, special data processing applications, etc., can solve problems related to research on unseen leaks, and achieve the effect of improving efficiency

Pending Publication Date: 2018-12-28
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the research on leakage control focuses on the location of leaks and reducing the amount of water loss. There is no research on the development process of leaks, that is, the development process of a water leak from its appearance to its detection.

Method used

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  • A growth function curve used to characterize the development state of leakage point in the whole life cycle
  • A growth function curve used to characterize the development state of leakage point in the whole life cycle
  • A growth function curve used to characterize the development state of leakage point in the whole life cycle

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Embodiment Construction

[0022] In order to better understand and implement the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that although the embodiments of the present invention have been described, it is obvious that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist thereof.

[0023] In this case, the DN100 cast iron pipe is taken as an example, and the "S-type" logic function f(t) is the growth function of the leak point.

[0024] The development process of leaks is divided into four stages, such as figure 1 Shown:

[0025] Quiet period 1: The leak point has just occurred, and the leak point cannot be detected by the existing technology. The water loss is very small, and the growth rate is close to 0;

[0026] Slow period 2: Starting from the minimum amount of water loss that can ...

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Abstract

The invention provides a method for characterizing the development state of leakage points in the whole life cycle by using a growth function curve, which comprises a silent period, a slow period, a growth period and a stable period. The points on the growth function curve include the technically undetectable leakage point, the initial leakage point, the development leakage point, the extreme leakage point and the leakage point inflection point. The state of development throughout the lifecycle of a leak, including the background leak, Dark leakage point, bright leakage point, technology non-detectable leakage point on growth function curve in silent period is background leakage point, initial leakage point, development leakage point, leakage point inflection point in slow period, growth period, stable period, background leakage point if it is not detected at a certain time, dark leakage point if it is detected at a certain time; the leakage point after the extreme leakage point in thestable period on the growth function curve is the open leakage point. The invention utilizes the growth function to determine the leakage amount of the leakage point in different time periods, whichcan guide the water balance analysis more effectively.

Description

technical field [0001] The invention belongs to the field of leakage control of urban water supply pipe networks, and in particular relates to a method for representing the development state of a leakage point in the whole life cycle by using a growth function curve. Background technique [0002] The first step in the management and control process of water supply network leakage is to conduct water balance analysis, and then evaluate the current situation of leakage in the pipeline network, and then take appropriate control measures to reduce leakage. The leakage water volume of the water supply pipe network includes the actual leakage water volume and the apparent leakage water volume. The apparent leakage mainly includes illegal connections, instrument errors, and statistical errors; Spills and overflows. The real water loss is an important part of the water loss, and a reasonable and objective evaluation of it is of great significance for the management and control of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2113/14G06F2111/10G06F30/20
Inventor 刘书明郭冠呈吴雪仲丽娟贾代林孙立瑾
Owner TSINGHUA UNIV
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