CN108916663B - Municipal water supply pipe network monitoring system and monitoring method - Google Patents
Municipal water supply pipe network monitoring system and monitoring method Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
Abstract
The utility model provides a municipal water supply network monitoring system and monitoring method, through the change value of the periodic pressure mean value of monitoring pipeline, uses different pressure monitoring methods to domestic water area and non-resident water area to also can give monitoring information at the water peak hour, thereby reduce the loss of leaking, improve the accuracy of monitoring simultaneously.
Description
Technical Field
The invention relates to a pipe network monitoring technology in F17D 5/02 classification numbers, in particular to a municipal water supply pipe network monitoring system and a monitoring method.
Background
Municipal water supply networks are one of the important infrastructures. The water for production and living is generally transported from a reservoir through a main pipeline and then transported to each user through an urban pipe network system. The water supply pipeline is an important infrastructure for guaranteeing the water consumption of residents. Along with the acceleration of urbanization process speed, resident domestic water consumption sharply increases, has newly-built many water supply networks, has also changed simultaneously and has restoreed ageing water supply pipe. Along with the continuous expansion of water scale and the increase of pipeline service life, the load and complexity of urban water supply networks are increasing day by day, and pipe network systems easily cause pipeline leakage and pipe explosion accidents due to various self factors and environmental factors, so that the waste of water resources is caused, economic losses are caused, and accidents are possibly caused sometimes. Therefore, the leakage pipeline must be detected and treated early.
The leakage of the water supply pipeline can be divided into an open leakage and a dark leakage. The open leak means that the leakage amount is large, and the leakage can be generally seen from the surface. If underground pipeline breaks down and the like causes water column injection, the phenomenon can be discovered and processed in time generally and can be solved quickly, and although the leakage flow is large, the loss is not large generally. Dark leakage refers to leakage that is seemingly difficult to detect, and is often difficult to detect even though the amount of leakage is small, and can cause even greater losses over time.
The continuous and sealed nature of water supply pipes requires that leak testing be done without destructive testing, and that the pipes be tested non-destructively, which can virtually increase the difficulty of testing. Pressure monitoring is a nondestructive detection method for finding pipeline leakage, when leakage occurs, the flow of a leakage point is increased to reduce the pressure, and when a sensor at a monitoring point reaches a pressure threshold value, the pipeline can be prompted to break. However, when the branch line is broken or the leakage is small, the pressure value is not lowered to the pressure threshold value, so that the problem cannot be found in time. A high-efficiency and reliable pipeline leakage detection and positioning system has the advantages that when tiny leakage occurs, in the shortest time, the system can accurately give an alarm to accurately indicate the leakage position, the adaptability to working condition change is strong, and the maintenance is convenient.
In order to solve the above problems, the invention of CN201410003775.4 proposes a method for monitoring pressure of a water supply network, which monitors a variation value of a mean value of periodic pressure of a pipeline, and determines that there is a rupture or leakage of the pipeline when the variation value is greater than a threshold value. However, the change of the pipeline pressure is not only generated by the broken pipeline, the water supply pipeline has the characteristics of the water supply pipeline, a large number of branch pipelines exist in the regional pipeline, and when a user is in a water consumption peak, the change of the pipeline pressure can be caused by the large number of branches of the branch pipelines, so that the technical scheme in the prior art can generate more false alarm conditions when the water consumption peak. In order to solve the problems, the municipal water supply network monitoring system is provided, when a pressure sensitive pipeline is in a water peak, pipeline leakage is not determined according to a pressure change value, so that the condition of misjudgment can be reduced, and the system cannot monitor the pressure sensitive pipeline in the water peak.
Disclosure of Invention
The invention provides a municipal water supply pipe network monitoring system as an improvement of the prior art, which gives alarm information when a pipe network leaks, can give monitoring information even in the peak time of water consumption, and can reduce the condition of misjudgment.
As one aspect of the present invention, there is provided a municipal water supply network monitoring system comprising: the pressure sensors are arranged at different positions of the pipe network and are used for supplying the pressure of the water pipeline; a sensor area information unit for storing information on a pipe water supply area where the pressure sensor is located; a sensor pipeline dividing section that determines whether or not the pipeline in which the pressure sensor is located belongs to a pressure-sensitive pipeline based on the water supply area information stored by the sensor area information section; a time determination part for determining the sensitive time of the pressure sensitive pipeline; the central control machine receives the pressure detected by the pressure sensors of the pipelines, calculates the change value of the cycle average value of the non-pressure sensitive pipeline, and judges that the pipeline has leakage when the change value is greater than a reference threshold value; for a pressure sensitive pipeline, judging whether the pressure sensitive pipeline is in sensitive time, if not, calculating a change value of a cycle average value of the pressure, and judging that the pipeline has leakage when the change value is greater than a reference threshold value; the device also comprises a pressure sensitive pipeline threshold value determining part which determines a water use threshold value of the pressure sensitive pipeline; and when the central control machine is in sensitive time for the pressure sensitive pipeline, calculating the change value of the cycle average value of the pressure, and judging that the pipeline has leakage when the change value is greater than the sum of the reference threshold value and the water use threshold value.
Preferably, the reference threshold value represents a threshold value of a pressure change value caused by a line leakage.
Preferably, the water usage threshold represents a threshold for a pressure change at peak water usage.
Preferably, the water usage threshold is determined by a maximum value of a pressure variation value at a peak time of water usage of the pressure sensitive pipe without leakage.
Preferably, the detection result of the pressure sensor is transmitted to the central control machine through a wireless network.
Preferably, the water supply region information includes a domestic water region and a non-domestic water region.
Preferably, the period is 5-8 seconds.
Preferably, the non-residential areas include industrial parks, commercial establishments, parks, hospitals, and the like.
Preferably, the sensor pipe dividing part determines a pipe of the domestic water area as a pressure sensitive pipe.
Preferably, the sensing time of the pressure sensing pipeline is the peak period of the water consumption of the residents.
Preferably, the sensitive time of the pressure sensitive pipeline is 6-10 points at night.
Preferably, the leakage alarm device further comprises an alarm device, and when the pipeline has leakage, the alarm device gives an alarm.
As another aspect of the present invention, there is provided the monitoring method of the municipal water supply network monitoring system described above, comprising the steps of: (1) acquiring pressure data of a pipeline monitoring point through a pressure sensor; (2) calculating the change value of the cycle average value of the pressure for the data of each pipeline monitoring point; (3) judging whether the monitoring point pipeline is a pressure sensitive pipeline: if the pressure sensitive pipeline is not the pressure sensitive pipeline, entering the step (4), and if the pressure sensitive pipeline is the pressure sensitive pipeline, entering the step (5); (4) judging whether the variation value is larger than a reference threshold value, if so, judging that the pipeline has leakage, and alarming; if the current period is not larger than the reference threshold, the calculation of the current period is finished, and the next period is entered; (5) judging whether the pressure is in the pressure sensitive time, if so, entering the step (6), and if not, entering the step (7); (6) judging whether the change value is greater than the sum of the reference threshold value and the water consumption threshold value, if so, judging that the pressure sensitive pipeline has leakage, and alarming; if the water consumption is not greater than the sum of the reference threshold and the water consumption threshold, finishing the calculation of the current period and entering the next period; (7) judging whether the variation value is larger than a reference threshold value, if so, judging that the pipeline has leakage, and alarming; and if the current period is not larger than the reference threshold, finishing the calculation of the current period and entering the next period.
Drawings
FIG. 1 is a flow chart of a monitoring method of a municipal water supply network monitoring system according to an embodiment of the invention.
Detailed Description
In order to more clearly illustrate the technical solutions of the present invention, the present invention will be briefly described below by using embodiments, and it is obvious that the following description is only one embodiment of the present invention, and for those skilled in the art, other technical solutions can be obtained according to the embodiments without inventive labor, and also fall within the disclosure of the present invention.
The municipal water supply pipe network monitoring system comprises pressure sensors arranged at different pipeline positions of a pipe network and used for detecting the pressure of pipelines. Theoretically, the more the number of the sensors is, the more the data quantity information is provided, the higher the redundancy degree of the data is, and the running state of the pipe network can be reflected better. In fact, the number of pressure sensors can be set to 1/7-1/6 of pipe network nodes, wherein each pipe network node is provided with a sensor for a main pipeline, and the branch network can be set as required, considering the selection of economy and technology.
For the pressure sensors of different pipe network nodes, the sensor area information part stores the water supply area information according to the water supply areas of pipelines of the pressure sensors, the water supply area information is divided into residential areas and non-residential areas, the water used by the residential areas is mainly domestic water, and the non-residential areas comprise industrial areas, commercial areas, hospitals, schools, parks and the like.
The sensor pipeline dividing part determines whether a pipeline where the pressure sensor is located belongs to a pressure sensitive pipeline or not based on water supply area information stored in the sensor area information part, wherein water used in a residential area has the characteristic of peak time, and the pipeline with the water supply area as the residential area is determined as the pressure sensitive pipeline due to the change of pipeline pressure caused by the large amount of shunting of the pipeline in the water use peak time. The time determination part determines the sensitive time of the pressure sensitive pipeline, wherein the peak time of water consumption of a residential area is about 6-10 points in the evening, so that the sensitive time of the pressure sensitive pipeline can be determined as 6-10 points in the evening. A pressure-sensitive pipeline threshold value determining part which determines a water use threshold value of the pressure-sensitive pipeline; the water use threshold value represents a threshold value of the pressure change value of the pressure sensitive pipeline during the water use peak, and can be determined by the maximum value of the pressure change value of the pressure sensitive pipeline without leakage during the water use peak.
The central control machine receives pressure signals detected by the pressure sensors of all pipeline monitoring points through a wireless network, calculates a period mean value of pressure values of all pipeline monitoring points for a non-pressure sensitive pipeline, wherein the period can be 5-8 seconds, calculates a difference value between the current period mean value and the previous period mean value, and when an absolute value of the difference value is greater than a reference threshold value, the reference threshold value represents a threshold value of a pressure change value caused by pipeline leakage, can be determined according to the setting condition of the pipe network pressure of the area and represents that the pipeline bursts or leaks, and the alarm device gives an alarm that the pipeline is abnormal; for the pressure sensitive pipeline, after calculating the difference value between the current period mean value and the last period mean value, the central control machine judges whether the current period mean value is in the sensitive time, if the current period mean value is in the sensitive time, the central control machine judges whether the absolute value of the difference value is larger than the sum of a reference threshold value and a water use threshold value, and if the absolute value is larger than the sum of the reference threshold value and the water use threshold value, the central control machine judges that the pressure sensitive pipeline of the pipeline has; if the pipeline is not in the sensitive time, judging that the pipeline has leakage when the absolute value of the difference is larger than a reference threshold value, and giving an alarm of the abnormity of the pipeline by the alarm device.
The detection method of the municipal water supply network monitoring system provided by the embodiment of the invention is shown in figure 1 and comprises the following steps: (1) acquiring pressure data of a pipeline monitoring point through a pressure sensor; (2) calculating the change value of the cycle average value of the pressure for the data of each pipeline monitoring point; (3) judging whether the monitoring point pipeline is a pressure sensitive pipeline: if the pressure sensitive pipeline is not the pressure sensitive pipeline, entering the step (4), and if the pressure sensitive pipeline is the pressure sensitive pipeline, entering the step (5); (4) judging whether the variation value is larger than a reference threshold value, if so, judging that the pipeline has leakage, and alarming; if the current period is not larger than the reference threshold, the calculation of the current period is finished, and the next period is entered; (5) judging whether the pressure is in the pressure sensitive time, if so, entering the step (6), and if not, entering the step (7); (6) judging whether the change value is greater than the sum of the reference threshold value and the water consumption threshold value, if so, judging that the pressure sensitive pipeline has leakage, and alarming; if the sum of the reference threshold and the water consumption threshold is not larger than the sum of the reference threshold and the water consumption threshold, finishing the calculation of the current period and entering the next period; (7) judging whether the variation value is larger than a reference threshold value, if so, judging that the pipeline has leakage, and alarming; and if the current period is not larger than the reference threshold, finishing the calculation of the current period and entering the next period.
All documents referred to herein are incorporated by reference into this application as if each were individually incorporated by reference. The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: after reading the above disclosure of the present invention, the protection scope of the present invention is not limited to the above embodiments, and modifications or equivalent substitutions may be made to the specific embodiments of the present invention without departing from the spirit and scope of the present invention, which should be covered by the claims of the present invention.
Claims (5)
1. A municipal water supply network monitoring system comprising: the pressure sensors are arranged at different positions of the pipe network and are used for detecting the pressure of the water supply pipeline; a sensor area information unit for storing information on a pipe water supply area where the pressure sensor is located; a sensor pipeline dividing section that determines whether or not the pipeline in which the pressure sensor is located belongs to a pressure-sensitive pipeline based on the water supply area information stored by the sensor area information section; a time determination part for determining the sensitive time of the pressure sensitive pipeline; the central control machine receives the pressure detected by the pressure sensors of the pipelines, calculates the change value of the cycle average value of the non-pressure sensitive pipelines, and judges that the pipeline has leakage when the absolute value of the change value is greater than a reference threshold value; for a pressure sensitive pipeline, judging whether the pressure sensitive pipeline is in sensitive time, if not, calculating a change value of a cycle average value of the pressure, and judging that the pipeline has leakage when the change value is greater than a reference threshold value; the method is characterized in that: the device also comprises a pressure sensitive pipeline threshold value determining part which determines a water use threshold value of the pressure sensitive pipeline; and when the absolute value of the change value is greater than the sum of the reference threshold and the water use threshold, the central control machine judges that the pipeline has leakage.
2. The municipal water supply network monitoring system of claim 1, wherein: the reference threshold value represents a threshold value of a pressure change value caused by a line leak.
3. The municipal water supply network monitoring system of claim 2, wherein: the water use threshold value represents a threshold value of a pressure change value of the pressure sensitive pipeline during water use peak.
4. The municipal water supply network monitoring system of claim 3, wherein: the water use threshold value is determined by the maximum value of the pressure change value of the pressure sensitive pipeline without leakage during the water use peak.
5. A method of monitoring a municipal water supply network monitoring system according to any one of claims 1 to 4, comprising the steps of: (1) acquiring pressure data of a pipeline monitoring point through a pressure sensor; (2) calculating the change value of the cycle average value of the pressure for the data of each pipeline monitoring point; (3) judging whether the monitoring point pipeline is a pressure sensitive pipeline: if the pressure sensitive pipeline is not the pressure sensitive pipeline, entering the step (4), and if the pressure sensitive pipeline is the pressure sensitive pipeline, entering the step (5); (4) judging whether the absolute value of the change value is larger than a reference threshold value, if so, judging that the pipeline has leakage, and alarming; if the current period is not larger than the reference threshold, the calculation of the current period is finished, and the next period is entered; (5) judging whether the pressure is in the pressure sensitive time, if so, entering the step (6), and if not, entering the step (7); (6) judging whether the absolute value of the change value is greater than the sum of the reference threshold value and the water consumption threshold value, if so, judging that the pressure sensitive pipeline has leakage, and alarming; if the water consumption is not greater than the sum of the reference threshold and the water consumption threshold, finishing the calculation of the current period and entering the next period; (7) judging whether the absolute value of the change value is larger than a reference threshold value, if so, judging that the pipeline has leakage, and alarming; and if the current period is not larger than the reference threshold, finishing the calculation of the current period and entering the next period.
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| CN110470438A (en) * | 2019-09-19 | 2019-11-19 | 济南瑞森智能科技有限公司 | A kind of detection method judging objective bolt feedwater piping leak using online measuring technique |
| CN111307238A (en) * | 2020-03-12 | 2020-06-19 | 洛阳智能农业装备研究院有限公司 | Intelligent water meter protection method and system based on flow monitoring |
| CN113757091A (en) * | 2020-06-05 | 2021-12-07 | 浙江大元泵业股份有限公司 | Control method for reducing frequent starting of pressure control type water pump |
| CN112944226B (en) * | 2021-02-03 | 2023-06-06 | 浙江海洋大学 | Pipeline leakage detection method based on accelerometer |
| CN113029472B (en) * | 2021-03-09 | 2022-04-05 | 西安交通大学 | Pipe network leakage detection system and detection method |
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| JP2002243572A (en) * | 2001-02-21 | 2002-08-28 | Osaka Gas Co Ltd | Method and device for inspecting piping leakage |
| CN102777770A (en) * | 2012-08-07 | 2012-11-14 | 河北农业大学 | Flow monitoring point optimizing arranging method for water supply pipe network leakage fault diagnosis |
| CN103712070B (en) * | 2014-01-06 | 2016-08-17 | 山东交通学院 | A kind of water supply network pressure monitoring method |
| CN104534285B (en) * | 2014-12-26 | 2017-02-22 | 福建智恒电子新技术有限公司 | Energy consumption anomaly monitoring method and device |
| CN105446246B (en) * | 2015-12-24 | 2017-10-03 | 北方民族大学 | The remote monitoring leakage proof system and method for public supply mains |
| CN105927863B (en) * | 2016-05-07 | 2018-06-29 | 大连理工大学 | DMA subregions pipeline network leak on-line checking alignment system and its detection localization method |
| CN107061997A (en) * | 2017-03-28 | 2017-08-18 | 智润科技有限公司 | Set up the method and monitoring system of multichannel water-supply structure leakage loss condition monitoring pipe network |
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| CN107633340B (en) * | 2017-07-21 | 2021-09-07 | 浙江大学 | Water supply pipe network leakage area rapid identification method based on pressure monitoring |
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Effective date of registration: 20200728 Address after: 116000 No.59 Tieshan West Road, economic and Technological Development Zone, Dalian, Liaoning Province Applicant after: Dalian detai Water Service Co.,Ltd. Address before: 102488 Beijing Fangshan District Liangxiang Triumph Street Jianshe Road 18 -D1948 Applicant before: BEIJING YIZHILIAN TECHNOLOGY Co.,Ltd. |
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Address after: 116100 No.59 Tieshan West Road, Dalian Development Zone, Liaoning Province Patentee after: Dalian Economic Technology Development Zone Water Supply Co. Country or region after: China Address before: 116000, No. 59 Tieshan West Road, Dalian Economic and Technological Development Zone, Liaoning Province Patentee before: Dalian detai Water Service Co.,Ltd. Country or region before: China |