CN202834780U - Heat supply network leakage positioning system - Google Patents
Heat supply network leakage positioning system Download PDFInfo
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- CN202834780U CN202834780U CN 201220494124 CN201220494124U CN202834780U CN 202834780 U CN202834780 U CN 202834780U CN 201220494124 CN201220494124 CN 201220494124 CN 201220494124 U CN201220494124 U CN 201220494124U CN 202834780 U CN202834780 U CN 202834780U
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- heat exchange
- exchange station
- leakage
- supply network
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Abstract
The utility model belongs to the field of monitoring of heat supply network breakdowns, and particularly relates to a heat supply network leakage positioning system and a positioning method thereof. A control center is composed of a computer, a multi-channel drive receiver and data transmission equipment. A heat exchange station terminal is composed of heat exchange station terminal data transmission equipment, a heat exchange station terminal microprocessor, a heat exchange station pressure sensor and a heat exchange station flow sensor. Calculation procedures of a heat supply network are arranged in a computer memory to store and process data transmitted back by the heat exchange station terminal in real time. Once leakage of the heat supply network occurs, hydraulic regime of a system after the leakage is obtained after heat exchange station inlet pressure and flow change data returned by heat exchange station tail end monitoring points is calculated by the calculation procedures, then, a pipe section where a leakage point is located can be recognized, and an exact leakage position can be determined through assisted monitoring of an infrared thermometer.
Description
Technical field
The utility model belongs to the monitoring field of heat-supply network failure, particularly a kind of leakage positioning system of heating network.
Background technique
Along with the Chinese society expanding economy, North City was changed to central heat supply rapidly by former district heating at present, hot user's quantity constantly increases, and the area coverage of urban heating network is increasing, and corresponding accident rate and the economic loss of bringing also increase thereupon.Therefore, we are more and more higher to the security requirement of heating network itself, and are also more urgent to the demand of the accident leakage detection system of heating network.The method that the at present domestic most of use of large-scale heating network outdoor direct burial lays, the most SCADA systems that adopt of monitoring are to realize the various functions such as data capture, equipment control, measurement, parameter adjusting and various types of signal warning.But owing to lacking the method for effectively leaking the pipeline section location, when running into the leakage accident of burst, and in the situation of accident leakage amount less than the maximum rate of water make-up of system, be difficult to determine to leak pipeline section by inspection method.
Summary of the invention
The utility model is to determine accurately that rapidly the position of leaking occurs heating network, has proposed a kind of leakage positioning system of heating network.
The technical solution adopted in the utility model is:
This system is comprised of boiler room control centre, several heat exchange station control system and infrared thermometer;
Described boiler room control centre drives receiver by the computer that links to each other in turn, data transmission set and multichannel and forms;
Described heat exchange station control system is by heat exchange station terminal data transmission equipment, and the heat exchange station terminal microprocessor that is connected with heat exchange station terminal data transmission equipment respectively, heat exchange station pressure transducer and heat exchange station flow transducer form;
Described each heat exchange station control system drives receiver with data line with the multichannel of boiler room control centre by heat exchange station terminal data transmission equipment and is connected.
Each assembly that described boiler room control centre is connected with the heat exchange station control system is connected with UPS battery respectively.
The beneficial effects of the utility model are:
Data capture by each heat exchange station control system terminal, after turning back to control centre, pass through computer program, just can draw real-time system's hydraulic regime, the data that each group is returned, its corresponding system pressure diagram of formation that can be corresponding, and each heat exchange station flow and pressure and upper one group of variation tendency of comparing.As long as the variation tendency when monitoring these data appearance leakage operating modes is just can realize leaking the location of pipeline section.
Description of drawings
Fig. 1 is that a kind of heating network of the present utility model leaks the work schematic diagram of location;
Fig. 2 is improved genetic algorithms method flow chart of the present utility model.
Fig. 3 is the flow chart of a kind of heating network leakage locating method of the present utility model.
Number in the figure:
1-boiler room control centre, 2-computer, 3-data transmission set, the 4-multichannel drives receiver, 5-heat exchange station control system, 6-heat exchange station terminal data transmission equipment, 7-heat exchange station terminal microprocessor, 8-heat exchange station pressure transducer, 9-heat exchange station flow transducer.
Embodiment
The utility model provides a kind of leakage positioning system of heating network, and the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, this system is comprised of boiler room control centre 1, several heat exchange station control system 5 and infrared thermometer.
Boiler room control centre 1 drives receiver 4 by the computer 2 that links to each other in turn, data transmission set 3 and multichannel and forms; Heat exchange station control system 5 is by heat exchange station terminal data transmission equipment 6, and the heat exchange station terminal microprocessor 7 that is connected with heat exchange station terminal data transmission equipment 6 respectively, heat exchange station pressure transducer 8 and heat exchange station flow transducer 9 form; Each heat exchange station control system 5 drives receiver 4 with data line with the multichannel of boiler room control centre 1 by heat exchange station terminal data transmission equipment 6 and is connected.
The function of each assembly is as follows:
Computer 2 is provided with central processing unit (CPU) and storage in it, be used for collecting in real time pressure and the data on flows that passes over from each heat exchange station, and the image data that the heat exchanging station is passed back puts in order and analyze, as the input of primary data;
Data transmission set 3 is used for the mutual conversion between analogue signal and the digital signal, and computer order is passed to remote transmission terminal by wireless signal, and receives the data that remote transmission terminal is passed back;
The image data that boiler room control centre passes back at 1 heat exchanging station is stored, is put in order and analyzes, write computer program by simultaneous node flow equation of equilibrium group, circuit pressure equation of equilibrium group and Branch Resistance law, after drawing result of calculation, generate the variation diagram of dynamical system pressure diagram and heat exchange station flow and pressure;
Heat exchange station terminal data transmission equipment 6, be converted to digital signal for pressure and the flux signal that will gather the heat exchange station entrance of measuring, input heat exchange station terminal microprocessor, and receive the instruction that control centre sends, and pass the heat exchange station inlet pressure and the data on flows signal that gather back control centre;
Heat exchange station terminal microprocessor 7 is provided with storage in it, be used for receiving control centre's instruction, and control centre is processed, stores and passed back to the survey data of heat exchange station pressure transducer, flow transducer collection;
Heat exchange station pressure transducer 8 is used for gathering the force value of measuring the heat exchange station entrance and exit;
Heat exchange station flow transducer 9 is used for gathering the flow value of measuring the heat exchange station entrance;
UPS battery is used for providing remote transmission terminal collection measurement, digital-to-analog conversion, storage, reception, the required power supply of emission and control centre, even when normal power supply goes wrong, guarantees that the SCADA system still can move normally;
Infrared thermometer is used for determining concrete leak position after roughly determining the leakage point scope.
Fig. 2 is mixed self-adapting genetic algorithm flow chart of the present utility model, by the characteristics resistance coefficient of genetic algorithm correction pipeline, thereby makes the calculated value of program more accurate.At first, press the initial population of the coded system formation characteristics resistance coefficient of Gray code; User's pressure and data on flows that utilization collects are determined the objective function of genetic algorithm to calculate each individual adaptive value; Whether the observation adaptive value meets the demands, if ungratified words, employing is selected, the operatings of genetic algorithm of crossover and mutation, and initial population is evolved, until satisfy condition, the probability of selection and intersection is continuous the variation in this process; Adopt at last the method for pattern search, draw more accurately value.
Fig. 3 is the flow chart of a kind of heating network leakage locating method of the present utility model, and the step that it is concrete and effect comprise following content:
A. by decomposing, merge, omitting, actual heating network is simplified, be abstracted into desirable computation model;
B. utilize design load and the history data of this heating network, calculate the hydraulic regime of this heating network when normal operation; Afterwards, adopt the improved genetic algorithms method, system's hydraulic regime that simplification calculates is revised, thereby the calculated value that makes program is more near actual measured value;
C. utilize the active user data that record, calculate the real-time dynamic water-pressure figure that generates this heating network under the nominal situation, and the tendency chart of heat exchange station inlet pressure and changes in flow rate;
D. the flex point of pressure gradient occurs when pressure diagram, the Changing Pattern under the operating mode appears leaking in the user's who records simultaneously pressure and flow, and the small pump rate of water make-up can be judged leakage failure to occur when increasing suddenly;
E. according to the data after leaking, adopt equally genetic algorithm that the heating network model after leaking is revised, calculate the pressure of each node of heating network after the leakage and the flow of each pipeline section;
F. after leakage point occurring in the pipe network, for pressure diagram, pressure diagram pressure gradient steepening before the leakage point, pressure diagram pressure gradient behind the leakage point flattens slow, and obvious flex point appears in pressure diagram, locates for the user, user's flow increases before the leakage point, customer flow behind the leakage point reduces, and the pressure at user entry place changes appearance with water pressure in main pipe figure pressure: the non-geometric ratio imbalance of user entry pressure before the leakage point, the trend of user entry pressure geometric ratio imbalance behind the leakage point.By the situation of change of pressure diagram and in conjunction with the variation tendency of leaking rear each user's pressure and flow, judge the residing pipeline section of leakage point;
G. according to the data of leaking pipeline section front and back node, obtain the approximate location of leakage point on this leakage pipeline section;
H. at the known leak pipeline section with roughly behind the leak position, near leakage point, utilizing infrared thermometer to measure the surface temperature highest point, both has been the leakage point of heating network.
Claims (2)
1. a heating network leaks the system of locating, and is comprised of boiler room control centre (1), several heat exchange station control system (5) and infrared thermometer, it is characterized in that,
Described boiler room control centre (1) drives receiver (4) by the computer (2) that links to each other in turn, data transmission set (3) and multichannel and forms;
Described heat exchange station control system (5) is by heat exchange station terminal data transmission equipment (6), and the heat exchange station terminal microprocessor (7) that is connected with heat exchange station terminal data transmission equipment (6) respectively, heat exchange station pressure transducer (8) and heat exchange station flow transducer (9) form;
Described each heat exchange station control system (5) drives receiver (4) with data line with the multichannel of boiler room control centre (1) by heat exchange station terminal data transmission equipment (6) and is connected.
2. a kind of heating network according to claim 1 leaks the system of location, it is characterized in that, described boiler room control centre (1) is connected 5 with the heat exchange station control system) in each assembly be connected with UPS battery respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494124 CN202834780U (en) | 2012-09-26 | 2012-09-26 | Heat supply network leakage positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220494124 CN202834780U (en) | 2012-09-26 | 2012-09-26 | Heat supply network leakage positioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202834780U true CN202834780U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220494124 Expired - Fee Related CN202834780U (en) | 2012-09-26 | 2012-09-26 | Heat supply network leakage positioning system |
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| CN (1) | CN202834780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865459A (en) * | 2012-09-26 | 2013-01-09 | 华北电力大学（保定） | Heat supply pipe network leakage positioning system and heat supply pipe network leakage positioning method |
-
2012
- 2012-09-26 CN CN 201220494124 patent/CN202834780U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865459A (en) * | 2012-09-26 | 2013-01-09 | 华北电力大学（保定） | Heat supply pipe network leakage positioning system and heat supply pipe network leakage positioning method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20140926 |
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| EXPY | Termination of patent right or utility model |