CN109323800B - Dynamic leakage detection system for railway water supply pipe network - Google Patents
Dynamic leakage detection system for railway water supply pipe network Download PDFInfo
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Abstract
The invention provides a dynamic leakage detection system for a railway water supply network, which comprises a wireless remote transmission intelligent water meter, a remote transmission module of the water meter, a remote water meter monitoring system and a leakage alarm prompting device, wherein a data reading end of the wireless transmission module of the remote transmission intelligent water meter is connected with an information output end of the wireless remote transmission intelligent water meter; the remote water meter monitoring system acquires a water quantity information value on the wireless remote transmission intelligent water meter through the remote water meter wireless transmission module, and controls the water leakage alarm prompting device to alarm if the calculation and judgment results are matched with the preset alarm standard through calculation and judgment. The leakage detection system provided by the invention can monitor the condition of the water meter in real time, has the advantages of strong leakage detection real-time performance, low difficulty, short leakage detection time, water resource saving and high maintenance reliability of the water pipe network.
Description
Technical Field
The invention relates to the technical field of train operation and maintenance, in particular to a dynamic leakage detection system for a railway water supply pipe network.
Background
In factories, residential areas, public places and train stations, water supply networks are commonly used to supply water to users in service areas. As the water supply networks of the railway system are distributed, the railway system has the characteristics of multiple fault point types, high fault frequency and the like. Most of water supply pipelines are close to railway lines, water leakage of the pipelines easily affects railway driving safety, the pipelines are laid below the ground surface, the state of the pipelines cannot be checked by visual inspection, water leakage is difficult to find in time, water leakage points are affected by surrounding buildings, and great difficulty is brought to maintenance work.
The conventional exploration of water pipe bursting still stays in a passive leakage detection technical stage, particularly the water pipe bursting and leakage have the defects of large time span from water leakage to water leakage finding, high leakage detection difficulty, high cost, long leakage detection time and serious water waste. The existing water pipe leakage detection is generally carried out by adopting various sensors, including a related leakage detection method, a sound listening leakage detection method, a leakage sound automatic recording monitoring method, a partition leakage detection method and the like.
The existing detection method mainly adopts a passive leak detection method, but because a water supply pipe network of a railway system is complex and special in position, including some over-rail pipelines, soft soil zones and the like, the difficulty in installation and maintenance is high, and the cost is high.
Disclosure of Invention
The invention aims to provide a dynamic leakage detection system for a railway water supply pipe network, which solves the technical problem that the existing railway water supply pipe network leakage detection method is high in leakage detection difficulty and cost, so that the maintenance reliability of the water supply pipe network is low.
In order to achieve the purpose, the invention provides the following technical scheme:
a dynamic leakage detection system for a railway water supply network comprises a wireless remote transmission intelligent water meter, a remote transmission water meter wireless transmission module, a remote water meter monitoring system and a leakage alarm prompting device, wherein a data reading end of the remote transmission water meter wireless transmission module is connected with an information output end of the wireless remote transmission intelligent water meter, an information input end of the remote water meter monitoring system is connected with an information transmission end of the remote transmission water meter wireless transmission module, and an output end of the remote water meter monitoring system is connected with the leakage alarm prompting device; the remote water meter monitoring system acquires a water quantity information value on the wireless remote transmission intelligent water meter through a remote water meter wireless transmission module, and controls the water leakage alarm prompting device to alarm if the calculation and judgment results are matched with a preset alarm standard after calculation and judgment;
the wireless remote transmission intelligent water meter comprises a main system wireless remote transmission water meter arranged on a main system water supply pipeline on a railway station, a branch system wireless remote transmission water meter arranged on a branch system water supply pipeline and a branch system wireless remote transmission water meter arranged on a branch system water supply pipeline.
In a preferred embodiment, the calculation and determination process of the remote water meter monitoring system specifically includes: the method comprises the steps of real-time judgment of the water quantity difference of a main system and a sub system, judgment of the water quantity of a local system, judgment of the water quantity of the upstream and the downstream of a key pipeline, judgment of the water quantity of a single water meter, judgment of the water quantity of a bus without a bus plug section and judgment of the water quantity of two ends of an annular pipe network.
In a preferred embodiment, the formula for real-time determining the water content difference between the total system and the subsystem is specifically:
water quantity of the Q total system-sigma Q subsystem is more than water quantity of the Q total system multiplied by N1;
the water quantity judgment formula of the local system is specifically as follows:
water quantity of the Q local total system-Sigma Q local subsystem is more than water quantity of the Q local total system multiplied by N2;
the formula for judging the water quantity upstream and downstream of the key pipeline is specifically as follows:
q upstream pipeline water volume-Q downstream pipeline water volume > H;
the water quantity judgment formula of the single water meter is as follows:
the water quantity of the Q single water meter is more than the monthly average water quantity on the Q single water meter multiplied by N;
the formula for judging the water quantity of the passenger car without the car stop specifically comprises the following steps:
q has no water meter water volume of the vehicle section > K;
the specific formula for judging the water quantity at two ends of the annular pipe network is as follows: firstly, judging whether the water meters at two ends of the annular pipe network are in positive rotation or reverse rotation, if so, judging that the formula is as follows:
q ring 1+ Q ring 2> the monthly average water quantity on the Q ring multiplied by N;
if the inversion is true, the judgment formula is as follows:
ring Q1-ring Q2 > average monthly water quantity on ring Q multiplied by N;
n, N1, N2 and H, K are set system error loss empirical coefficients.
In a preferred embodiment, the single water meter water amount determination formula specifically includes:
and (4) a night period: the water quantity of the single Q water meter at night is more than the average monthly water quantity of the single Q water meter at night multiplied by N3;
in the same time period: water quantity of a single water meter in the same time period Q is larger than monthly average water quantity on the single water meter in the same time period Q multiplied by N4;
different time periods: water quantity of a single water meter in different periods of Q > average monthly water quantity on the single water meter in different periods of Q multiplied by N5;
wherein, N3, N4 and N5 are set system error loss empirical coefficients.
In a preferred embodiment, the preset alarm standard is that if the total and sub-system water quantity difference real-time judgment formula, the local system water quantity judgment formula, the key pipeline upstream and downstream water quantity judgment formula, the night section judgment formula in single water meter water quantity judgment, the same time period judgment formula, the different time period judgment formula, and the passenger car bolt non-vehicle section water quantity judgment formula and the annular pipe network two-end water quantity judgment formula, in the specified same region, any two formulas are established, then the remote water meter monitoring system controls the water leakage alarm prompting device to alarm.
In a preferred embodiment, the key pipeline specifically comprises an over-rail pipeline or a loose soil zone or a collapsible loess zone or a high fill area pipeline.
In a preferred embodiment, the water leakage alarm prompting device comprises a buzzer or an indicator light.
Compared with the prior art, the dynamic leakage detection system for the railway water supply network has the advantages that the remote water meter monitoring system can monitor the water quantity information values of the wireless remote transmission intelligent water meters in real time, calculate the water quantity difference according to a plurality of judgment standards, and analyze and judge whether the water supply network leaks or not by combining the system error water quantity loss value. The leakage detection system provided by the invention can monitor the condition of the water meter in real time, has high leakage detection accuracy, low difficulty and short leakage detection time, and saves water resources. Meanwhile, water quantity information value data of each water meter can be scientifically and effectively managed and uploaded, and water leakage statistics, leakage detection data reports, analysis curves and the like can be automatically generated. In addition, according to the pipeline water leakage condition, a pipeline water leakage statistical table or a pipeline overhaul suggestion table is generated in the remote water meter monitoring system, and data support is provided for the overhaul of the railway water supply network conveniently.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the dynamic leak detection system of a railway water supply pipe network according to the present invention;
fig. 2 is a schematic diagram of the distribution structure of wireless remote water meters in the dynamic leakage detection system of the railway water supply pipe network.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a dynamic leakage detection system for a railway water supply network according to the present invention is described, which comprises a wireless remote-transmission intelligent water meter, a wireless transmission module of the remote-transmission water meter, a remote water meter monitoring system and a leakage alarm prompting device, wherein a data reading end of the wireless transmission module of the remote-transmission water meter is connected to an information output end of the wireless remote-transmission intelligent water meter, an information input end of the remote water meter monitoring system is connected to an information transmission end of the wireless transmission module of the remote-transmission water meter, and an output end of the remote water meter monitoring system is connected to the leakage alarm prompting device. The remote water meter monitoring system firstly obtains a water quantity information value on the wireless remote transmission intelligent water meter through a remote transmission water meter wireless transmission module, and then calculates and judges, and controls the water leakage alarm prompting device to alarm if the calculation and judgment results are matched with a preset alarm standard;
the wireless remote transmission intelligent water meter comprises a main system wireless remote transmission water meter arranged on a main system water supply pipeline on a railway station, and each sub system wireless remote transmission water meter arranged on the sub system water supply pipeline.
The remote water meter monitoring system comprises a communication unit, an extraction unit, a calculation unit, a judgment unit, a time unit, a storage unit and a display unit.
Specifically, the calculation and judgment process of the remote water meter monitoring system specifically includes: the method comprises the steps of real-time judgment of the water quantity difference of a main system and a sub system, judgment of the water quantity of a local system, judgment of the water quantity of the upstream and the downstream of a key pipeline, judgment of the water quantity of a single water meter, judgment of the water quantity of a bus without a bus plug section and judgment of the water quantity of two ends of an annular pipe network.
Specifically, the railway water pipe network can be distributed into a main system water supply pipeline, the main system water supply pipeline is divided into a plurality of branch system water supply pipelines, and each branch system water supply pipeline can be divided into a plurality of branch system water supply pipelines or more.
The real-time water quantity difference judging formula of the total system and the subsystem is specifically as follows:
water quantity of the Q total system-sigma Q subsystem is more than water quantity of the Q total system multiplied by N1;
in the formula, the water quantity of the Q total system is a wireless remote transmission water meter water quantity information value on a water supply pipeline of the total system, the water quantities of the sigma Q subsystems are sums of wireless remote transmission water meter water quantity information values on water supply pipelines of all the subsystems, and if the difference between the two values is larger than the product of the wireless remote transmission water meter water quantity information value on the water supply pipeline of the total system and the system error loss rate, the formula is established.
The formula for judging the water quantity of the local system is specifically as follows:
water quantity of the Q local total system-Sigma Q local subsystem is more than water quantity of the Q local total system multiplied by N2;
dividing the whole water pipe network into a plurality of local parts, and selecting a local pipe network for monitoring. Similarly, the difference between the Q local total system water quantity information value and the Q local sub-system water quantity information value is larger than the product of the wireless remote water meter water quantity information value on the water supply pipeline of the local total system and the system error loss rate, and then the formula is established.
The formula for judging the water quantity upstream and downstream of the key pipeline is specifically as follows:
q upstream pipeline water volume-Q downstream pipeline water volume > H;
the above formula is to select a specific certain critical pipeline, and if the difference between the water amount of the Q upstream pipeline and the water amount of the Q downstream pipeline of the critical pipeline is greater than the system error loss, the formula is established.
The water quantity judgment formula of the single water meter is as follows:
the water quantity of the Q single water meter is more than the monthly average water quantity on the Q single water meter multiplied by N;
the formula for judging the water quantity of the passenger car without the car stop is as follows:
q has no water meter water volume of the vehicle section > K;
in the above determination process, in the night time when the bus is not tied for a vehicle, the water amount information value of the wireless remote water meter should be zero when the system error loss is ignored, and if the water amount information value of the wireless remote water meter is greater than the system error loss, the formula is established.
The specific formula for judging the water quantity at the two ends of the annular pipe network is as follows: firstly, judging whether the water meters at two ends of the annular pipe network are in positive rotation or reverse rotation, if so, judging that the formula is as follows:
q ring 1+ Q ring 2> the monthly average water quantity on the Q ring multiplied by N;
if the inversion is true, the judgment formula is as follows:
ring Q1-ring Q2 > average monthly water quantity on ring Q multiplied by N;
wherein: the average water quantity of the ring Q in the previous month is the average water quantity at two ends of the annular pipe network in the previous month;
in the above determination process, for the ring-shaped pipe network, because two ends of the ring-shaped pipe network are respectively provided with a wireless remote water meter, and because of the relation of pressure difference between the two ends, the water meter may rotate forwards or backwards, and when calculating the water amount, if the water amount is rotating forwards, the water meter is a Q ring 1+ a Q ring 2; if inverted, Q-ring 1-Q-ring 2.
N, N1, N2 and H, K are set system error loss empirical coefficients.
Wherein, the above-mentioned single water gauge water yield judgement formula specifically includes:
and (4) a night period: the water quantity of the single Q water meter at night is more than the average monthly water quantity of the single Q water meter at night multiplied by N3;
in the same time period: water quantity of a single water meter in the same time period Q is larger than monthly average water quantity on the single water meter in the same time period Q multiplied by N4;
different time periods: water quantity of a single water meter in different periods of Q > average monthly water quantity on the single water meter in different periods of Q multiplied by N5;
wherein, N3, N4 and N5 are set system error loss empirical coefficients.
When the water quantities at the two ends of the annular pipe network are judged, the water quantity judgment formula is divided into three time periods of night, the same time period and different time periods.
And the Q is water quantity, the unit is ton, and the remote water meter monitoring system acquires and calculates the Q at regular time.
The N1, N2, N3, N4, N5, and H, K are all set system error losses, which are empirical coefficients and need to be preset in the remote water meter monitoring system.
In this embodiment, the empirical coefficients are all the water loss due to the system error of 1 hour, that is, every 1 hour, the remote water meter monitoring system collects the water information value of each water meter and calculates and judges the water information value once.
The set empirical coefficient values of the water loss of the system error in 1 hour are respectively as follows: n1 ═ 5%; n2 ═ 5%; n3 ═ 30%; n4 ═ 40%; n5 ═ 50%; h1 (ton); k is 2 (ton). The N is specifically N3, N4 and N5.
The preset alarm standard is that if any two formulas in the total and sub system water quantity difference real-time judgment formula, the local system water quantity judgment formula, the upstream and downstream water quantity judgment formula of the key pipeline, the night section judgment formula in single water meter water quantity judgment, the same time section judgment formula and the different time section judgment formula, and the passenger car bolt non-vehicle section water quantity judgment formula and the water quantity judgment formulas at two ends of the annular pipe network are established in the specified same area, the remote water meter monitoring system controls the water leakage alarm prompting device to alarm.
The alarm information specifically displays that the pipeline corresponding to the wireless remote transmission intelligent water meter with the corresponding number leaks.
The key pipelines specifically comprise key main pipelines such as over-rail pipelines, soft soil zones, collapsible loess zones and pipelines in high fill areas.
Preferably, the water leakage alarm device includes a buzzer or an indicator light. Meanwhile, the water leakage alarm prompt also comprises computer alarm and voice prompt in the remote water meter monitoring system.
The wireless remote transmission intelligent water meter is preferably selected from DN50 wireless intelligent water meter (YST/WWM-50), DN65 wireless intelligent water meter (YST/WWM-65), DN80 wireless intelligent water meter (YST/WWM-80), DN100 wireless intelligent water meter (YST/WWM-100), DN150 wireless intelligent water meter (YST/WWM-150), DN200 wireless intelligent water meter (YST/WWM-200), DN250 wireless intelligent water meter (YST/WWM-250) and DN300 wireless intelligent water meter (YST/WWM-300).
The wireless transmission module of the remote water meter comprises a relay station arranged in each area with the radius of 200 and 400 meters, and the wireless intelligent water meter in the area carries out wireless communication through the relay station. The preferable product model of the relay station is YST/WTS-R.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The utility model provides a railway water supply pipe network developments system of leaking hunting which characterized in that: the remote water meter monitoring system comprises a wireless remote transmission intelligent water meter, a remote water meter wireless transmission module, a remote water meter monitoring system and a water leakage alarm prompting device, wherein a data reading end of the remote water meter wireless transmission module is connected with an information output end of the wireless remote transmission intelligent water meter, an information input end of the remote water meter monitoring system is connected with an information transmission end of the remote water meter wireless transmission module, and an output end of the remote water meter monitoring system is connected with the water leakage alarm prompting device; the remote water meter monitoring system acquires a water quantity information value on the wireless remote transmission intelligent water meter through a remote water meter wireless transmission module, and controls the water leakage alarm prompting device to alarm if the calculation and judgment results are matched with a preset alarm standard after calculation and judgment;
the wireless remote transmission intelligent water meter comprises a main system wireless remote transmission water meter arranged on a main system water supply pipeline on a railway station, a subsystem wireless remote transmission water meter arranged on a subsystem water supply pipeline and a subsystem wireless remote transmission water meter arranged on a subsystem water supply pipeline;
the calculation and judgment process of the remote water meter monitoring system specifically comprises the following steps: the method comprises the steps of judging the water quantity difference of a main system and a sub system in real time, judging the water quantity of a local system, judging the water quantity of the upstream and downstream key pipelines, judging the water quantity of a single water meter, judging the water quantity of a bus without a bus plug section and judging the water quantities of two ends of an annular pipe network;
the real-time judging formula of the water quantity difference of the total system and the subsystem is specifically as follows:
water quantity of the Q total system-sigma Q subsystem is more than water quantity of the Q total system multiplied by N1;
the water quantity judgment formula of the local system is specifically as follows:
water quantity of the Q local total system-Sigma Q local subsystem is more than water quantity of the Q local total system multiplied by N2;
the formula for judging the water quantity upstream and downstream of the key pipeline is specifically as follows:
q upstream pipeline water volume-Q downstream pipeline water volume > H;
the water quantity judgment formula of the single water meter is as follows:
the water quantity of the Q single water meter is more than the monthly average water quantity on the Q single water meter multiplied by N;
the formula for judging the water quantity of the passenger car without the car stop specifically comprises the following steps:
q has no water meter water volume of the vehicle section > K;
the specific formula for judging the water quantity at two ends of the annular pipe network is as follows: firstly, judging whether the water meters at two ends of the annular pipe network are in positive rotation or reverse rotation, if so, judging that the formula is as follows:
q ring 1+ Q ring 2> the monthly average water quantity on the Q ring multiplied by N;
if the inversion is true, the judgment formula is as follows:
ring Q1-ring Q2 > average monthly water quantity on ring Q multiplied by N;
wherein N, N1, N2 and H, K are set system error loss empirical coefficients;
the single water meter water quantity judgment formula specifically comprises:
and (4) a night period: the water quantity of the single Q water meter at night is more than the average monthly water quantity of the single Q water meter at night multiplied by N3;
in the same time period: water quantity of a single water meter in the same time period Q is larger than monthly average water quantity on the single water meter in the same time period Q multiplied by N4;
different time periods: water quantity of a single water meter in different periods of Q > average monthly water quantity on the single water meter in different periods of Q multiplied by N5;
wherein, N3, N4 and N5 are set system error loss empirical coefficients;
the preset alarm standard is that if the total and sub-system water quantity difference real-time judgment formula, the local system water quantity judgment formula, the key pipeline upstream and downstream water quantity judgment formula, the night section judgment formula in single water meter water quantity judgment, the same time period judgment formula and the different time period judgment formula, and in the passenger car bolt non-vehicle section water quantity judgment formula and the annular pipe network two-end water quantity judgment formula, any two formulas in the specified same region are established, then the remote water meter monitoring system controls the water leakage alarm prompting device to alarm.
2. The dynamic leak hunting system for a railway water supply pipe network as claimed in claim 1, wherein: the key pipelines specifically comprise over-rail pipelines or soil soft zones or collapsible loess zones or pipelines in high fill areas.
3. The dynamic leak hunting system for a railway water supply pipe network as claimed in claim 1, wherein: the water leakage alarm prompting device comprises a buzzer or an indicator lamp.
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