WO2017185547A1 - 一种流体漏失监控装置和监控方法 - Google Patents

一种流体漏失监控装置和监控方法 Download PDF

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Publication number
WO2017185547A1
WO2017185547A1 PCT/CN2016/092178 CN2016092178W WO2017185547A1 WO 2017185547 A1 WO2017185547 A1 WO 2017185547A1 CN 2016092178 W CN2016092178 W CN 2016092178W WO 2017185547 A1 WO2017185547 A1 WO 2017185547A1
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WO
WIPO (PCT)
Prior art keywords
fluid
flow
predetermined value
less
inner valve
Prior art date
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PCT/CN2016/092178
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English (en)
French (fr)
Inventor
刘金玉
王殿生
王玉斗
Original Assignee
刘金玉
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Publication date
Application filed by 刘金玉 filed Critical 刘金玉
Publication of WO2017185547A1 publication Critical patent/WO2017185547A1/zh
Priority to US16/172,552 priority Critical patent/US20190063689A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/071—Arrangement of safety devices in domestic pipe systems, e.g. devices for automatic shut-off
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • 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
    • F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/30—Detecting leaks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/15—Leakage reduction or detection in water storage or distribution

Definitions

  • the present invention relates to the field of fluid monitoring technologies, and in particular, to a fluid leakage monitoring device and a monitoring method.
  • the loss of the water supply network has caused a lot of waste of water resources, causing major economic losses to the countries of the world and easily causing various hazards.
  • many methods have been developed at home and abroad to detect leaks in pipe networks, and a series of pipe network leak detection instruments have been developed.
  • the leak detection methods mainly used in economically developed countries such as Germany, the United Kingdom, and Japan include: sound-sounding leak detection method, related leak detection method, automatic leak detection sound method, and district leak detection method.
  • the first three methods are sound waves that rely on the sound generated by the leak to detect leaks.
  • the related leak detection method is the most advanced and effective leak detection method. It has certain anti-noise ability and is suitable for deep or unfailing pipelines.
  • the ground leakage method is used, but when the ambient noise is large and the water leakage sound signal is weak, it is difficult to detect the water leakage sound wave signal, and the position of the leak point cannot be determined.
  • the leakage of the water supply terminal pipe network is generally a small flow slow leakage, or even leakage, the leakage sound wave signal is very weak, so the sound wave method of detecting the leakage point by the sound generated by the leakage port is not suitable for the terminal pipe network leak detection, and the above acoustic wave method They are not online leak detection methods, they need to consume a lot of manpower and material resources, and they need to work at night.
  • the zone leak detection method is to measure the presence or absence of leakage by measuring the flow and pressure of the pipeline.
  • the method is not applicable to the terminal pipe network inspection from the principle of leak detection. leak.
  • Other leak detection methods include: negative pressure wave method, earth moisture test method, water quality test method, in-tube investigation method, tracer gas detection method, cable sensing method, geological radar system leak detection method, nuclear magnetic resonance detection method, laser light guide Fiber method, infrared thermography, laser scanning, etc.
  • the negative pressure wave method has a fast response speed and high positioning accuracy, but it requires that the leakage is a sudden large leakage. For small leakage, it is difficult to detect.
  • the method is mainly applied to the main pipeline leak detection, and is not applicable to Terminal pipe network leak detection.
  • nuclear magnetic resonance detection, laser optical fiber method, infrared thermal imaging method, laser scanning method, etc. are new types of leak detection methods with high technical level. These methods have very high sensitivity for leak detection and accurate positioning, but they are expensive and difficult to promote. It belongs to the typical "technical feasible, economically infeasible" technology. At present, China's pipe network leak detection technology is relatively backward, and most cities use the audio-visual leak detection method or related leak detection method. The city has begun to adopt the automatic sound leakage monitoring method or the zone leak detection method.
  • the object of the present invention is to provide a fluid leakage monitoring device and a monitoring method, which can more accurately and accurately determine whether a pipeline has fluid leakage according to the movement condition of the fluid in the pipeline, can effectively reduce fluid leakage, and avoid various secondary disasters. Occurs, which in turn reduces the economic losses caused by fluid loss to families, businesses and their society.
  • the invention provides a fluid leakage monitoring device, comprising an inner valve, a flow measuring device, a controller, a communication module and a pressure detecting module; the inner valve, the flow measuring device, the communication module and the pressure detecting module Connected to the controller separately; the inner valve is for mounting on a pipe, and the inner valve is located between the terminal valve and the fluid source to control communication or disconnection of the pipe; the flow meter is used for Detecting a fluid flow between the terminal valve and the inner valve; the pressure detecting module is configured to detect a fluid pressure between the terminal valve and the inner valve, and the inner valve and the fluid source a fluid pressure; the communication module is configured to communicate with a peripheral device; the controller is configured to receive, according to the fluid flow detected by the flow meter, the fluid pressure detected by the pressure detecting module, the communication module receives Information that controls the opening or closing of the inner valve;
  • the flow rate detected by the flow measuring device is not less than the first predetermined value, determining whether the flow of the fluid is in need of flow according to the information received by the communication module, and determining that the flow is not required when the flow of the fluid is not required. Leaking, closing the inner valve; when the flow of the fluid is in need of flow, determining whether the amount of fluid flowing through the pipe is not less than a second predetermined value, and/or whether the continuous flow time of the fluid is not less than
  • the predetermined value is such that when the amount of fluid continuously flowing through the conduit is not less than a second predetermined value, and/or the continuous flow time of the fluid is not less than a third predetermined value, the inner valve is closed.
  • an alarm module is further included; the alarm module is connected to the controller; the alarm module is configured to when the flow of the fluid is in need of flow, and the amount of fluid flowing through the pipeline is not less than the second When the predetermined value, and/or the continuous flow time of the fluid is not less than the third predetermined value, the inner valve is closed, and then an alarm message is issued;
  • the inner valve is opened to re-determine whether the amount of fluid flowing through the pipeline is not less than a second predetermined value, and/or whether the continuous flow time of the fluid is not less than the third Predetermined value
  • the inner valve is opened to determine whether the fluid flow detected by the flow measuring device is less than a fourth predetermined value: when the detected fluid flow rate is not less than a fourth predetermined value, There is a leak, closing the inner valve; when the detected fluid flow is less than the fourth predetermined value, re-determining whether the amount of fluid flowing through the conduit is not less than a second predetermined value, and/or continuous flow of the fluid Whether the time is not less than the third predetermined value;
  • the alarm module is further configured to issue an alarm message when it is determined that there is a leak.
  • the pressure detecting module is a differential pressure sensor.
  • the pressure detecting module includes a first sub-pressure sensor and a second sub-pressure sensor.
  • the alarm module includes an audible alarm and/or a light alarm.
  • the communication module is a WIFI transmitting and receiving module and/or a Bluetooth transmitting and receiving module.
  • the flow measuring device is a pulse flow meter.
  • the power storage power supply device being connected to the controller; the remote controller being connected to the controller.
  • the invention also provides a fluid leakage monitoring method, the pipeline is connected with a fluid source, the pipeline is equipped with a terminal valve and an inner valve, and the inner valve is located between the terminal valve and the fluid source, and the method comprises:
  • the flow rate of the fluid in the pipeline is not less than the first predetermined value, determining whether the flow of the fluid is a demanding flow, when the flow of the fluid is not in need of flow, determining that there is a leak, closing the inner valve; when the fluid The flow is a flow when it is determined whether the amount of fluid flowing continuously through the pipe is not less than a second predetermined value, and/or whether the continuous flow time of the fluid is not less than a third predetermined value, when the flow continues
  • the inner valve is closed when the amount of fluid of the conduit is not less than a second predetermined value, and/or the continuous flow time of the fluid is not less than a third predetermined value.
  • the inner valve is opened to determine whether the fluid flow rate is less than a fourth predetermined value: when the fluid flow rate is not less than the fourth predetermined value, it is determined that there is a leak, closing the inner valve; when the fluid flow is less than When the fourth predetermined value is described, it is re-determined whether the amount of fluid flowing through the pipe is not less than a second predetermined value, and/or whether the continuous flow time of the fluid is not less than a third predetermined value;
  • the fluid leakage monitoring device and the fluid leakage monitoring method provided by the invention can automatically and timely monitor the pipeline leakage in a timely and accurate manner while keeping the cost low.
  • the fluid leakage monitoring device includes an inner valve, a flow meter, a controller, a communication module, and a pressure detecting module; the inner valve, the flow meter, the communication module, and the pressure detecting module respectively and the controller Connecting; the inner valve is for mounting on a pipe, and the inner valve is located between the terminal valve and the fluid source for controlling communication or disconnection of the pipe; the flow measuring device is for detecting the terminal valve a fluid flow rate between the inner valve and the inner valve; the pressure detecting module is configured to detect a fluid pressure between the terminal valve and the inner valve, and a fluid pressure between the inner valve and the fluid source;
  • the communication module is configured to communicate with a peripheral device; the controller is configured to control the fluid flow rate detected by the flow rate measuring device, a fluid pressure detected by the pressure detecting module, and information received by the communication module
  • the inner valve
  • the communication module and the pressure detecting module it is possible to better judge whether the flow of the fluid is in need of flow, thereby more timely and accurately determining whether the pipeline is leaked, and the flow measuring device and the pressure detecting module are not required. It has high precision and thus lower cost.
  • FIG. 1 is a schematic diagram showing the working principle of a fluid leakage monitoring device according to an embodiment of the present invention.
  • FIG. 2 is a flow chart of a method for monitoring fluid leakage according to an embodiment of the present invention.
  • 104-communication module 105-first sub-pressure sensor; 106-second sub-pressure sensor;
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or connected integrally; can be mechanical or electrical; can be directly connected, indirectly connected through an intermediate medium, or connected inside two components through. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • an embodiment of the present invention provides a fluid leakage monitoring device, including an inner valve 101, a flow measuring device 102, a controller 103, a communication module 104, and a pressure detecting module; an internal valve 101, and a flow measurement.
  • the controller 102, the communication module 104 and the pressure detecting module are respectively connected to the controller 103; the inner valve 101 is for mounting on the pipe 107, and the inner valve 101 is located between the terminal valve 108 and the fluid source 109 to control the communication of the pipe 107 or Disconnected, that is, through the inner valve 101 to control the communication or disconnection of the conduit, it should be noted that the terminal valve 108 is also mounted on the conduit 107, the fluid source 109 is connected to the conduit 107, and the inner valve 101 is adjacent to the fluid source 109.
  • the conduit 107 forms a fluid flow passage, and the opening and closing of the terminal valve 108 can also control the opening and closing of the fluid in the conduit 107; the flow measuring device 102 is configured to detect the terminal valve 108 and the inner valve 101.
  • the fluid flow rate is between; the pressure detecting module is for detecting the fluid pressure between the terminal valve 108 and the inner valve 101, and the fluid pressure between the inner valve 101 and the fluid source 109,
  • the pressure detecting module includes a first sub-pressure sensor 105 and a second sub-pressure sensor 106, the first sub-pressure sensor 105 is configured to detect a fluid pressure between the terminal valve 108 and the inner valve 101, and the second sub-pressure sensor 106
  • the communication module 104 is configured to communicate with the peripheral device to receive information transmitted by the user, and the controller 103 can determine whether the flow of the fluid is in need of flow according to the received information.
  • the size of the "first predetermined value”, the “second predetermined value”, the “third predetermined value”, the “fourth predetermined value”, and the “fifth predetermined value” may be adjusted, the alarm may be cancelled, and the like.
  • the demand flow mainly refers to the flow of the fluid caused by the user when the water is normally used; the controller 103 is configured to use the fluid flow detected by the flow measuring device 102, the fluid pressure detected by the pressure detecting module, and the communication module 104 receives the flow.
  • the information controls the opening or closing of the valve 101;
  • the inner valve 101 When the fluid flow rate detected by the flow measuring device 102 is less than the first predetermined value, the inner valve 101 is closed; then, according to the fluid pressure detected by the pressure detecting module, whether the fluid pressure between the terminal valve 108 and the inner valve 101 is lowered is determined.
  • the inner valve 101 When the pressure is lowered, the inner valve 101 is opened to judge whether the fluid flow rate detected by the flow measuring device 102 is less than a fifth predetermined value, when the flow rate measuring device 102 When the detected fluid flow rate is less than the fifth predetermined value, it is judged that there is a leak, the inner valve 101 is closed; when it is judged that the pressure is not lowered, the closing frequency of the inner valve 101 is lowered, and it is determined whether the fluid flow detected by the flow measuring device 102 is smaller than the first a predetermined value; or, when the flow rate detected by the flow meter 102 is less than the first predetermined value, closing the inner valve 101; then determining the fluid between the terminal valve 108 and the inner valve 101 based on the fluid pressure detected by the pressure detecting module Whether the absolute value of the difference between the pressure and the fluid pressure between the inner valve 101 and the fluid source 109 is greater than a predetermined pressure difference, and when the absolute value is greater than the predetermined pressure difference, the inner valve 101 is opened to determine the fluid flow
  • the flow rate measuring device 102 detects that the flow rate is less than the fifth predetermined value, it is determined that there is a leak, closing the inner valve 101; when the absolute value is not greater than the predetermined pressure difference, reducing the closing frequency of the inner valve 101, and re-determining Whether the flow rate detected by the flow meter 102 is less than a first predetermined value.
  • the leakage is determined. Closing the inner valve 101; determining whether the amount of fluid continuing to flow through the conduit 107 is not less than a second predetermined value when the flow of the fluid is in need of flow, and/or whether the continuous flow time of the fluid is not less than a third predetermined value, The inner valve 101 is closed when the amount of fluid that continues to flow through the conduit 107 is not less than a second predetermined value, and/or the continuous flow time of the fluid is not less than a third predetermined value.
  • the amount of fluid continuously flowing through the conduit 107 is less than the second predetermined value, and/or the continuous flow time of the fluid is less than the third predetermined value, it is re-determined whether the fluid flow detected by the flowmeter 102 is less than the first predetermined amount. value. It should be noted that the amount of fluid flowing through the conduit 107 refers to the total amount of fluid, which may be the total volume or the total mass.
  • the peripheral communication device can be a mobile phone.
  • the inner valve 101 is closed; when the flow of the fluid is in need of flow, it is judged whether the amount of the fluid continuously flowing through the pipe 107 is not less than a second predetermined value, and/or the continuous flow time of the fluid Whether it is not less than a third predetermined value, when the amount of fluid continuously flowing through the pipe 107 is not less than a second predetermined value, and/or the continuous flow time of the fluid is not less than At the third predetermined value, the inner valve 101 is closed.
  • the flowmeter 102 When the amount of fluid continuously flowing through the conduit 107 is less than the second predetermined value, and/or the continuous flow time of the fluid is less than the third predetermined value, it is re-determined whether the fluid flow detected by the flowmeter 102 is less than the first predetermined amount. value.
  • the first case is that the fluid does not flow out
  • the second case is that the fluid is or has been slow. Flow out. Further judgment is required as to which situation it belongs to.
  • Closing the inner valve 101 prevents fluid in the conduit 107 between the inner valve 101 and the fluid source 109 from flowing into the conduit 107 between the inner valve 101 and the terminal valve 108. At this time, whether the fluid pressure detected by the first sub-pressure sensor 105 and the second sub-pressure sensor 106 determines whether the fluid pressure between the terminal valve 108 and the inner valve 101 and the fluid pressure between the inner valve 101 and the fluid source 109 are between Greater than the predetermined pressure difference.
  • the fluid in the conduit 107 between the inner valve 101 and the terminal valve 108 remains stationary, no leakage occurs, the fluid pressure between the terminal valve 108 and the inner valve 101 and the inner valve 101 and the fluid source
  • the fluid pressure between 109 is equal, or not greater than the predetermined pressure differential, that is, the fluid pressure between the terminal valve 108 and the inner valve 101 is not reduced.
  • the fluid in the conduit 107 between the inner valve 101 and the terminal valve 108 is or has flowed out, at which point the amount of fluid in the conduit 107 between the inner valve 101 and the terminal valve 108 is reduced, resulting in The fluid pressure between the terminal valve 108 and the inner valve 101 is reduced, and the fluid pressure between the inner valve 101 and the fluid source 109 remains unchanged, thereby causing the fluid pressure between the terminal valve 108 and the inner valve 101 and the inner valve 101.
  • the absolute value of the difference in fluid pressure between the fluid source 109 and the fluid source 109 is greater than the predetermined pressure differential, that is, the fluid pressure between the terminal valve 108 and the inner valve 101 is reduced; thus depending on whether the predetermined pressure difference is greater than or greater than the predetermined pressure difference It can be judged whether it belongs to the first case or to the second case.
  • the first case is that the fluid in the pipe 107 between the inner valve 101 and the terminal valve 108 is abnormally leaked
  • the second case is that the terminal valve 108 is normally opened and the fluid is normally discharged. , for which situation, further needs further Judge.
  • the inner valve 101 is opened to communicate the conduit 107 between the inner valve 101 and the terminal valve 108 with the conduit 107 between the inner valve 101 and the fluid source 109. It is further determined whether the fluid flow rate detected by the flow measuring device 102 is less than a fifth predetermined value, which may be set to be smaller than the fluid flow rate in normal use. When the flow rate detected by the flow measuring device 102 is less than the fifth predetermined value, since the fifth predetermined value is smaller than the flow rate value of the fluid during normal use, it may be determined that it belongs to the first case, at which time the inner valve 101 is closed to prevent the fluid from continuing. Missed.
  • the fluid flow rate detected by the flow meter 102 is not less than the fifth predetermined value, it may be determined that it belongs to the second case, leaving the inner valve 101 open, due to the fluid flow detected by the flow meter 102 in the second case. Not less than the fifth predetermined value, so when the second situation occurs, it can be judged according to the information received by the communication module 104 whether the flow of the fluid is in need of flow; thereby realizing more timely and accurate use of the fluid leakage monitoring device
  • the opening and closing of the pipe 107 is controlled according to the actual fluid motion condition, and the fluid leakage is further reduced.
  • the first sub-pressure sensor 105 and the second sub-pressure sensor 106 may also be replaced by a differential pressure sensor, that is, the pressure detecting module is a differential pressure sensor. This allows direct measurement of the pressure difference of the fluid without the need to measure separately before making comparisons.
  • the "first predetermined value”, the "second predetermined value”, the “third predetermined value”, the “fourth predetermined value”, and the "fifth predetermined value” may be set according to actual needs.
  • the amount of fluid flowing through the conduit 107 can be obtained according to the flow rate and time, and is made by the controller 103 each time the amount of fluid flowing through the conduit 107 is not less than a second predetermined value each time.
  • the inner valve 101 is closed; or the duration of the continuous use of the fluid is set to a third predetermined value, and the inner valve 101 is closed by the controller 103 each time the fluid is continuously used for a period of not less than the third predetermined value.
  • the fluid leakage monitoring device further includes an alarm module; the alarm module is connected to the controller 103.
  • the alarm module can be connected to the controller 103 through wireless or wired; the alarm module is used when the flow of the fluid is needed.
  • the inner valve 101 is closed, and then an alarm message is issued when the alarm module Open the internal valve when the alarm message is released Door 101, and re-determine whether the amount of fluid continuously flowing through the pipe 107 is not less than a second predetermined value, and/or whether the continuous flow time of the fluid is not less than a third predetermined value; it should be noted that the release of the alarm information,
  • the mobile phone may be connected to the controller 103 through the communication module 104, and then released from the mobile phone end; or may be released by manually closing the valve.
  • One specific application of the alarm release mode in practice is: when the user is in the shower, if it is always on With the shower, when the amount of fluid continuously flowing through the pipe 107 is not less than a second predetermined value, and/or the continuous flow time of the fluid is not less than a third predetermined value, the fluid leakage monitoring device determines that the shower is forgotten to close the shower.
  • the mobile phone is not around, it is not convenient to take the mobile phone to release the alarm or press the restart button of the fluid leakage monitoring device; when the water break occurs, the user only needs to turn off the shower in time, after a few seconds. Open the shower and the water will come again.
  • the existence of the loss can be judged in time, and the demand for the customer's excessive water consumption can be effectively catered for; the function that can effectively meet the demand of the customer for large water consumption is the retry function; when the alarm information of the alarm module is not released, the inside is opened.
  • the valve 101 determines whether the fluid flow detected by the flow measuring device 102 is less than a fourth predetermined value: when the detected fluid flow rate is not less than a fourth predetermined value, determining that there is a leak, closing the inner valve 101; when the detected fluid flow is less than At the fourth predetermined value, it is re-determined whether the amount of fluid that continues to flow through the conduit 107 is not less than a second predetermined value, and/or whether the continuous flow time of the fluid is not less than a third predetermined value. It should be noted that, when it is judged that the flow of the fluid is not in need of flow, the inner valve 101 is closed and an alarm message is issued, but at this time, a leak alarm is issued.
  • the alarm module is further configured to issue an alarm message when it is determined that there is a loss.
  • the alarm module includes an audible alarm 111 and/or a light alarm 111. It should be noted that, in this embodiment, the alarm module is not limited to the audible alarm 111 and the light alarm 111, and other types of alarms 111 may be selected for alarm according to actual conditions.
  • the communication module 104 is a WIFI transmitting and receiving module and/or a Bluetooth transmitting and receiving module;
  • the flow measuring device 102 is a pulse flow meter.
  • the controller 103 includes a central processing unit 114 and a counting unit 112, and the counting unit 112
  • the pulse generated by the pulse flow meter can be acquired;
  • the central processing unit 114 can determine the flow rate of the fluid passing through the pipe 107 according to the pulse signal acquired by the counting unit 112; for example, determining the pulse generated by the pulse flow meter according to the number of pulses obtained by the counting unit 112 per unit time
  • the frequency is then determined based on the frequency of the fluid flow through conduit 107.
  • the counting unit 112 it is necessary to clear the accumulated flow rate of a single duty cycle in each duty cycle, for example, when the fluid flow rate detected by the pulse flow meter is less than the first predetermined value, the accumulation of the single duty cycle is performed. The flow is cleared.
  • the flow rate measuring device 102 is not limited to the above-described pulse flow meter, and may be other means for detecting the flow rate of the fluid.
  • the communication module 104 can also be a GSM module, a GPRS module, a WCDMA module, or an LTE module.
  • the fluid leakage monitoring device can also have a cumulative metering function by appropriate settings. For example, in the case that the flow meter 102 selects a pulse flow meter, the central processing unit 114 saves the accumulated flow for each single duty cycle before the accumulated flow of the single duty cycle is cleared, and the accumulated flow of all the single duty cycles. The sum is the cumulative flow rate; in the case where the flow meter 102 selects another flow meter, the central processing unit 114 may also perform cumulative metering of the amount of fluid passing through the conduit 107 based on the signal transmitted by the flow meter 102.
  • the controller 103 further includes a comparison unit 113.
  • the first sub-pressure sensor 105 and the second sub-pressure sensor 106 are respectively connected to the comparison unit 113; thus, the comparison unit 113 can apply a fluid pressure between the terminal valve 108 and the inner valve 101 and between the inner valve 101 and the fluid source 109.
  • the fluid pressure is compared to determine whether the absolute value of the difference between the fluid pressure between the terminal valve 108 and the inner valve 101 and the fluid pressure between the inner valve 101 and the fluid source 109 is greater than a predetermined pressure difference, and the comparison result is transmitted to the center.
  • Processing unit 114 is configured to determine whether the absolute value of the difference between the fluid pressure between the terminal valve 108 and the inner valve 101 and the fluid pressure between the inner valve 101 and the fluid source 109 is greater than a predetermined pressure difference, and the comparison result is transmitted to the center.
  • Determining whether the absolute value of the difference between the fluid pressure between the terminal valve 108 and the inner valve 101 and the fluid pressure between the inner valve 101 and the fluid source 109 is greater than a predetermined pressure difference is not limited to being obtained by this method, and may be determined by other means.
  • the pressure difference can be converted into a pressure difference, and the pressure difference is used to drive the predetermined object to move, and then the fluid pressure between the terminal valve 108 and the inner valve 101 and the inner valve 101 and the fluid source 109 are determined according to the position of the predetermined object. Whether the difference between the fluid pressures is greater than a predetermined pressure difference.
  • the power storage power supply device and the remote controller 110 are further included, and the power storage power supply device is connected to the controller 103 to provide power for the entire monitoring device; the remote controller 110 is connected to the controller 103, and the remote controller 110 is wirelessly connected.
  • the fluid leakage monitoring device can be remotely controlled.
  • the remote control can be an infrared remote control.
  • the closing frequency of the inner valve 101 can be lowered by setting the time interval during which the inner valve 101 enters the closed state for the next time. Reduce the power consumption of the device and extend the life of the inner valve 101. For example, after detecting that the pressure of the fluid between the terminal valve 108 and the inner valve 101 does not decrease, the countdown function is activated, and before the countdown is zero, the fluid flow between the terminal valve 108 and the inner valve 101 is less than the first predetermined. When the value is reached, the inner valve 101 is not closed; when the countdown is zero, when the fluid flow rate between the terminal valve 108 and the inner valve 101 is less than the first predetermined value, the inner valve 101 can be closed.
  • the embodiment of the present invention further provides a fluid leakage monitoring method, which can be implemented by using the fluid leakage monitoring device provided in this embodiment, but is not limited to being implemented by using the fluid leakage monitoring device described above, and may also be implemented by other components and component combinations.
  • the pipe 107 is connected to the fluid source 109.
  • the pipe 107 is provided with a terminal valve 108 and an inner valve 101, and the inner valve 101 is located between the terminal valve 108 and the fluid source 109.
  • the method includes the following steps:
  • Step S201 determining whether the fluid flow rate between the terminal valve 108 and the inner valve 101 is less than a first predetermined value: when the fluid flow rate between the terminal valve 108 and the inner valve 101 is less than the first predetermined value, proceeding to step S202, when the terminal valve When the fluid flow rate between the 108 and the inner valve 101 is not less than the first predetermined value, the routine proceeds to step S207.
  • Step S202 The inner valve 101 is closed.
  • Step S203 It is then determined whether the fluid pressure between the terminal valve 108 and the inner valve 101 is lowered: when it is judged that the pressure is lowered, the process proceeds to step S204, and when it is judged that the pressure is not lowered, the process proceeds to step S214, and the process proceeds to step S201. It should be noted that, in step 203, it may also be determined whether the absolute value of the difference between the fluid pressure between the terminal valve 108 and the inner valve 101 and the fluid pressure between the inner valve 101 and the fluid source 109 is greater than a predetermined pressure difference. When the absolute value is greater than the predetermined pressure difference, the process proceeds to step 204. When the absolute value is not greater than the predetermined pressure difference, step S214 is performed, and the process proceeds to step S201.
  • Step S204 Opening the inner valve 101.
  • Step S205 determining whether the fluid flow rate is less than a fifth predetermined value: when the fluid flow rate is less than the fifth predetermined value, the process proceeds to step S206; and when the fluid flow rate is not less than the fifth predetermined value, the process proceeds to step S207.
  • Step S206 determining that there is a loss, closing the inner valve 101, and the alarm 111 sends an alarm letter. interest. It should be noted that, in the step S206, when it is determined that there is a loss, the opening or closing of the inner valve 101 can also be determined according to actual conditions.
  • Step S207 It is judged whether the flow of the fluid is a demanding flow, and when the flow of the fluid is not in need of flow, the process proceeds to step S206; when the flow of the fluid is in need of flow, the process proceeds to step S208.
  • Step S208 It is judged whether the amount of fluid continuously flowing through the duct 107 is not less than a second predetermined value, and/or whether the continuous flow time of the fluid is not less than a third predetermined value.
  • the process proceeds to step S209; when the amount of fluid continuing to flow through the conduit 107 is less than At the second predetermined value, and/or the continuous flow time of the fluid is less than the third predetermined value, the process proceeds to step S201.
  • Step S209 The inner valve 101 is closed.
  • Step S210 Send an alarm message.
  • Step S211 It is judged whether the alarm is released, when the alarm information is released, the process proceeds to step S212; and when the alarm information is not released, the process proceeds to step S213.
  • Step S212 After opening the inner valve 101, the process proceeds to step S208.
  • Step S213 opening the inner valve 101, determining whether the fluid flow rate is less than a fourth predetermined value, and when the detected fluid flow rate is not less than the fourth predetermined value, proceeding to step S206; when the detected fluid flow rate is less than the fourth predetermined value, re-re- Proceed to step S208.
  • Step S214 Lowering the closing frequency of the inner valve 101.
  • the fluid leakage monitoring device and the monitoring method provided by the invention can determine whether the pipeline has fluid leakage in a timely and accurate manner according to the actual movement condition of the fluid in the pipeline under the condition of low maintenance cost, and judge the existence of the pipeline. After the fluid is lost, the valve can be selectively closed to prevent the fluid from continuing to leak, avoiding the occurrence of various secondary disasters, and thus reducing the economic loss caused by fluid loss to the family, the enterprise and its society.

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Abstract

一种流体漏失监控装置和监控方法，该监控装置包括内阀门（101）、流量测量器（102）、控制器（103）、通信模块（104）和压强检测模块；内阀门（101）、流量测量器（102）、通信模块（104）和压强检测模块分别与控制器（103）连接；内阀门（101）安装在管道（107）上，且内阀门（101）位于终端阀门（108）与流体源（109）之间，以控制管道（107）的连通或断开；流量测量器（102）用于检测终端阀门（108）与内阀门（101）之间的流体流量；压强检测模块用于检测终端阀门（108）与内阀门（101）之间的流体压强，以及内阀门（101）与流体源之间的流体压强；通信模块（104）用于与外围设备通信，接收外围设备发来的信息和向外围设备发送信息。该装置能够在保持成本较低的情况下，更加及时准确地判断管道是否存在流体漏失情况，降低了因为流体漏失给家庭、企业及其社会造成的经济损失。

Description

一种流体漏失监控装置和监控方法 技术领域
本发明涉及流体监控技术领域，尤其是涉及一种流体漏失监控装置和监控方法。
背景技术
供水管网漏失造成大量水资源的浪费，给世界各国造成重大经济损失，并易引发各种危害。截至到目前，国内外已先后研究出多种管网检漏方法，并研制了一系列管网检漏仪器。其中，在德国、英国、日本等经济发达的国家主要采用的检漏方法有：音听检漏法、相关检漏法、漏水声自动监测法和分区检漏法等。前三种方法是依靠漏口产生的声音探测漏点的声波方法，其中相关检漏法是最先进最有效的一种检漏方法，它具备一定的抗噪声能力，适合管道埋设较深或不宜用地面听漏法的区域，但当环境噪音较大，漏水声波信号很弱时，很难检测到漏水声波信号，进而无法确定漏点的位置。而供水终端管网漏失一般都是小流量缓慢泄漏，甚至是渗漏，漏水声波信号非常微弱，因此依靠漏口产生的声音探测漏点的声波方法不适合终端管网检漏，另外上述声波方法都不是在线检漏方法，需要消耗大量的人力物力，且需在夜间作业。而分区检漏法是通过计量管道流量及压力来判别有无漏失的存在，由于终端管网主要是指水表之后的家庭内部管网，该方法从检漏原理上已不适用于终端管网检漏。其它检漏方法还包括:负压波法、大地湿度检验法、水质检验法、管内调查法、示踪气体探测法、电缆传感法、地质雷达系统检漏法、核磁共振检测法、激光光导纤维法、红外热成像法、激光扫描法等等。其中，负压波法的响应速度快，定位精度高，但它要求泄漏是突发性的大泄漏，对于小泄漏，则很难检测，目前该方法主要应用于干线管道检漏，不适用于终端管网检漏。另外核磁共振检测法、激光光导纤维法、红外热成像法、激光扫描法等是技术水平较高的新型检漏方法，这些方法检漏灵敏度非常高，定位精确，但所需费用昂贵，难以推广，属于典型的“技术可行，经济不可行”类技术。目前我国管网检漏技术相对落后，绝大部分城市使用音听检漏法或相关检漏法，有些城 市已开始采用漏水声自动监测法或分区检漏法。
在漏失检测设备方面，上世纪80年代初，美、英、法、德、日相继研制成功了检漏仪、管线定位仪、探地雷达等设备，随着科技的发展，相继推出数字式检漏仪、多探头相关仪、区域漏水监测仪等，大大提高了检漏的可靠性和准确性。但上述设备都不是针对终端管网研制的。
综上所述，目前虽已存在多种管网检漏方法及检测设备，但都不适用于终端管网。
以上背景技术是以供水终端管网为代表进行的分析，但本发明技术不仅仅适用于供水终端管网，特此说明。
发明内容
本发明的目的在于提供一种流体漏失监控装置和监控方法，其根据管道内流体的运动情况可以更加及时准确地判断管道是否存在流体漏失情况，可有效减少流体漏失，避免各种次生灾害的发生，进而降低了因为流体漏失给家庭、企业及其社会造成的经济损失。
本发明提供了一种流体漏失监控装置，包括内阀门、流量测量器、控制器、通信模块和压强检测模块；所述内阀门、所述流量测量器、所述通信模块和所述压强检测模块分别与所述控制器连接；所述内阀门用于安装在管道上，且所述内阀门位于终端阀门与流体源之间，以控制所述管道的连通或断开；所述流量测量器用于检测所述终端阀门与所述内阀门之间的流体流量；所述压强检测模块用于检测所述终端阀门与所述内阀门之间的流体压强，以及所述内阀门与所述流体源之间的流体压强；所述通信模块用于与外围设备通信；所述控制器用于根据所述流量测量器检测到的流体流量、所述压强检测模块检测到的流体压强、所述通信模块接收到的信息控制所述内阀门的开启或关闭；
当所述流量测量器检测到的流体流量小于第一预定值时，关闭所述内阀门；然后根据所述压强检测模块检测到的流体压强确定所述终端阀门与所述内阀门之间的流体压强是否降低，当判断压强降低时，打开内阀门，判断所述流量测量器检测到的流体流量是否小于第五预定值，当所述流量 测量器检测到的流体流量小于所述第五预定值时，判断存在漏失，关闭内阀门；或，当所述流量测量器检测到的流体流量小于第一预定值时，关闭所述内阀门；然后根据所述压强检测模块检测到的流体压强确定所述终端阀门与所述内阀门之间的流体压强与所述内阀门与所述流体源之间的流体压强之差的绝对值是否大于预定压强差，当所述绝对值大于预定压强差时，打开内阀门，判断所述流量测量器检测到的流体流量是否小于第五预定值，当流量测量器检测到的流量小于所述第五预定值时，判断存在漏失，关闭内阀门；
当流量测量器检测到的流体流量不小于所述第一预定值时，根据所述通信模块接收到的信息判断流体的流动是否为有需流动，当流体的流动不是有需流动时，判断存在漏失，关闭所述内阀门；当流体的流动是有需流动时，判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值，当持续流过所述管道的流体的量不小于第二预定值时，和/或流体的持续通流时间不小于第三预定值时，关闭所述内阀门。
进一步地，还包括报警模块；所述报警模块与所述控制器连接；所述报警模块用于当流体的流动是有需流动时，且持续流过所述管道的流体的量不小于第二预定值，和/或流体的持续通流时间不小于第三预定值时，关闭所述内阀门，然后发出报警信息；
当报警模块的报警信息被解除时，打开所述内阀门，重新判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值；
当报警模块的报警信息未被解除时，打开所述内阀门，判断所述流量测量器检测到的流体流量是否小于第四预定值：当检测到的流体流量不小于第四预定值时，判断存在漏失，关闭内阀门；当检测到的流体流量小于所述第四预定值时，重新判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值；
所述报警模块还用于当判断存在漏失后，发出报警信息。
进一步地，所述压强检测模块为压差传感器。
进一步地，所述压强检测模块包括第一子压强传感器和第二子压强传感器。
进一步地，所述报警模块包括声音报警器和/或灯光报警器。
进一步地，所述通信模块为WIFI发射接收模块和/或蓝牙发射接收模块。
进一步地，所述流量测量器为脉冲流量计。
进一步地，还包括发电蓄电供电装置和遥控器，所述发电蓄电供电装置与所述控制器连接；所述遥控器与所述控制器连接。
本发明还提供了一种流体漏失监控方法，管道连接流体源，管道上安装有终端阀门和内阀门，且所述内阀门位于所述终端阀门与所述流体源之间，该方法包括：
当所述管道内流体的流量小于第一预定值时，关闭所述内阀门；然后确定所述终端阀门与所述内阀门之间的流体压强是否降低，当判断压强降低时，打开内阀门，判断所述流体流量是否小于第五预定值，当所述流体流量小于第五预定值时，判断存在漏失，关闭内阀门；或，当所述管道内流体的流量小于第一预定值时，关闭所述内阀门；然后确定所述终端阀门与所述内阀门之间的流体压强与所述内阀门与所述流体源之间的流体压强之差的绝对值是否大于预定压强差，当所述绝对值大于预定压强差时，打开内阀门，判断所述流体流量是否小于第五预定值，当所述流体流量小于第五预定值时，判断存在漏失，关闭内阀门；
当所述管道内流体的流量不小于所述第一预定值时，判断流体的流动是否为有需流动，当流体的流动不是有需流动时，判断存在漏失，关闭所述内阀门；当流体的流动是有需流动时，判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值，当持续流过所述管道的流体的量不小于第二预定值时，和/或流体的持续通流时间不小于第三预定值时，关闭所述内阀门。
可选地，当流体的流动是有需流动时，且持续流过所述管道的流体的 量不小于第二预定值，和/或流体的持续通流时间不小于第三预定值时，关闭所述内阀门，然后发出报警信息；
当报警信息被解除时，打开所述内阀门，重新判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值；
当报警信息未被解除时，打开所述内阀门，判断所述流体流量是否小于第四预定值：当流体流量不小于第四预定值时，判断存在漏失，关闭内阀门；当流体流量小于所述第四预定值时，重新判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值；
当判断存在漏失后，也发出报警信息。
与现有技术相比，本发明的有益效果为：
本发明提供的流体漏失监控装置及其采用的流体漏失监控方法，可以在保持成本较低的情况下，更加及时准确的对管道漏失进行在线自动监控。该流体漏失监控装置包括内阀门、流量测量器、控制器、通信模块和压强检测模块；所述内阀门、所述流量测量器、所述通信模块和所述压强检测模块分别与所述控制器连接；所述内阀门用于安装在管道上，且所述内阀门位于终端阀门与流体源之间，用于控制所述管道的连通或断开；所述流量测量器用于检测所述终端阀门与所述内阀门之间的流体流量；所述压强检测模块用于检测所述终端阀门与所述内阀门之间的流体压强，以及所述内阀门与所述流体源之间的流体压强；所述通信模块用于与外围设备通信；所述控制器用于根据所述流量测量器检测到的流体流量、所述压强检测模块检测到的流体压强、所述通信模块接收到的信息控制所述内阀门的开启或关闭。通过流量测量器、通信模块和压强检测模块能够更好的判断流体的流动是否为有需流动，进而更加及时并准确地判断管道是否存在漏失，并且采用的流量测量器和压强检测模块均不需要具有很高的精度，进而保证了成本较低。
附图说明
为了更清楚地说明本发明的具体实施方式或该技术中的技术方案，下面将对具体实施方式或该技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的流体漏失监控装置的工作原理示意图。
图2是本发明实施例提供的流体漏失监控方法的流程图。
附图标记：
101-内阀门；102-流量测量器；103-控制器；
104-通信模块；105-第一子压强传感器；106-第二子压强传感器；
107-管道；108-终端阀门；109-流体源；
110-遥控器；111-报警器；112-计数单元；
113-比较单元；114-中央处理单元。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”、“第四”、“第五”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，也可以是两个元件内部的连 通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
实施例
参见图1和图2所示，本发明实施例提供了一种流体漏失监控装置，包括内阀门101、流量测量器102、控制器103、通信模块104和压强检测模块；内阀门101、流量测量器102、通信模块104和压强检测模块分别与控制器103连接；内阀门101用于安装在管道107上，且内阀门101位于终端阀门108与流体源109之间，以控制管道107的连通或断开，也就是说，通过内阀门101来控制管道的连通或断开，需要说明的是，终端阀门108也安装在管道107上，流体源109与管道107相连，内阀门101靠近流体源109，而终端阀门108远离流体源109，管道107形成流体的流动通道，终端阀门108的开闭也能够控制管道107内的流体的通断；流量测量器102用于检测终端阀门108与内阀门101之间的流体流量；压强检测模块用于检测终端阀门108与内阀门101之间的流体压强，以及内阀门101与流体源109之间的流体压强，本实施例中，压强检测模块包括第一子压强传感器105和第二子压强传感器106，第一子压强传感器105用于检测终端阀门108与内阀门101之间的流体压强，第二子压强传感器106用于检测内阀门101与流体源109之间的流体压强；通信模块104用于与外围设备通信，接收用户发送的信息，控制器103根据接收到的信息可以判断流体的流动是否为有需流动，可以调节“第一预定值”、“第二预定值”、“第三预定值”、“第四预定值”和“第五预定值”的大小，也可以解除报警，等等。其中有需流动主要指的是用户正常用水时，造成的流体的流动；控制器103用于根据流量测量器102检测到的流体流量、压强检测模块检测到的流体压强、通信模块104接收到的信息控制内阀门101的开启或关闭；
当流量测量器102检测到的流体流量小于第一预定值时，关闭内阀门101；然后根据压强检测模块检测到的流体压强确定终端阀门108与内阀门101之间的流体压强是否降低，当判断压强降低时，打开内阀门101，判断流量测量器102检测到的流体流量是否小于第五预定值，当流量测量器102 检测到的流体流量小于第五预定值时，判断存在漏失，关闭内阀门101；当判断压强未降低时，降低内阀门101的关闭频率，重新判断流量测量器102检测到的流体流量是否小于第一预定值；或，当流量测量器102检测到的流体流量小于第一预定值时，关闭内阀门101；然后根据压强检测模块检测到的流体压强确定终端阀门108与内阀门101之间的流体压强与内阀门101与流体源109之间的流体压强之差的绝对值是否大于预定压强差，当该绝对值大于预定压强差时，打开内阀门101，判断流量测量器102检测到的流体流量是否小于第五预定值，当流量测量器102检测流量小于第五预定值时，判断存在漏失，关闭内阀门101；当绝对值不大于预定压强差时，降低内阀门101的关闭频率，重新判断流量测量器102检测到的流体流量是否小于第一预定值。
当流量测量器102检测到的流体流量不小于第一预定值时，根据通信模块104接收到的信息判断流体的流动是否为有需流动，当流体的流动不是有需流动时，判断存在漏失，关闭内阀门101；当流体的流动是有需流动时，判断持续流过管道107的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值，当持续流过管道107的流体的量不小于第二预定值时，和/或流体的持续通流时间不小于第三预定值时，关闭内阀门101。当持续流过管道107的流体的量小于第二预定值时，和/或流体的持续通流时间小于第三预定值时，重新进行判断流量测量器102检测到的流体流量是否小于第一预定值。需要指出的是，流过管道107的流体的量指的是流体的总量，该总量可以是体积总量，也可以是质量总量。外围通信设备可以是手机。
另外，在上述控制中，当流量测量器102检测到的流体流量不小于第五预定值时，再次根据通信模块104接收到的信息判断流体的流动是否为有需流动，当流体的流动不是有需流动时，判断存在漏失，关闭内阀门101；当流体的流动是有需流动时，判断持续流过管道107的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值，当持续流过管道107的流体的量不小于第二预定值时，和/或流体的持续通流时间不小于 第三预定值时，关闭内阀门101。当持续流过管道107的流体的量小于第二预定值时，和/或流体的持续通流时间小于第三预定值时，重新进行判断流量测量器102检测到的流体流量是否小于第一预定值。
需要说明的是，当流量测量器102检测到的流体流量小于第一预定值时，会出现两种情况：第一种情况是，流体未流出，第二种情况是，流体正在或已经慢速流出。对于属于哪一种情况需再进一步判断。
关闭内阀门101，可以避免内阀门101与流体源109之间的管道107中的流体流到内阀门101与终端阀门108之间的管道107中。此时，第一子压强传感器105和第二子压强传感器106检测到的流体压强确定终端阀门108与内阀门101之间的流体压强与内阀门101与流体源109之间的流体压强之间是否大于预定压强差。
当是第一种情况时，内阀门101与终端阀门108之间的管道107中的流体保持不动，未产生漏失，终端阀门108与内阀门101之间的流体压强与内阀门101与流体源109之间的流体压强相等，或不大于预定压强差，也就是说，终端阀门108与内阀门101之间的流体压强没有降低。当是第二种情况时，内阀门101与终端阀门108之间的管道107中的流体正在或已经流出，此时内阀门101与终端阀门108之间的管道107中的流体量会减少，导致终端阀门108与内阀门101之间的流体压强减小，而内阀门101与流体源109之间的流体压强保持不变，进而使得终端阀门108与内阀门101之间的流体压强与内阀门101与流体源109之间的流体压强之差的绝对值大于预定压强差，也就是说，终端阀门108与内阀门101之间的流体压强降低了；这样根据是否大于预定压强差或流体压强是否降低就可以判断是属于第一种情况，还是属于第二种情况。
当终端阀门108与内阀门101之间的流体压强与内阀门101与流体源109之间的流体压强之差的绝对值大于预定压强差时，或终端阀门108与内阀门101之间的流体压强下降时，又包括两种情形：第一种情形是，内阀门101与终端阀门108之间的管道107中的流体存在非正常漏失，第二种情形是，终端阀门108正常打开，流体正常流出，对于属于哪一种情形还需要进一步 判断。
打开内阀门101，使内阀门101与终端阀门108之间的管道107与内阀门101与流体源109之间的管道107连通。再判断流量测量器102检测到的流体流量是否小于第五预定值，该第五预定值可以设定为小于正常使用时的流体流量。流量测量器102检测到的流体流量小于第五预定值时，由于该第五预定值小于正常使用时流体的流量值，则可以确定属于第一种情形，此时关闭内阀门101，防止流体继续漏失。如果流量测量器102检测到的流体流量不小于第五预定值，则可以确定属于第二种情形，使内阀门101保持打开状态，由于第二种情形中，流量测量器102检测到的流体流量不小于第五预定值，因此当出现第二种情形时，可以根据通信模块104接收到的信息判断流体的流动是否为有需流动；从而实现利用上述流体漏失监控装置就可以更及时更准确地根据实际流体运动情况控制管道107的通断，进一步减少流体的漏失。
还需要说明的是，本实施例中，第一子压强传感器105和第二子压强传感器106还可以由一个压差传感器代替，也就是说，压强检测模块为压差传感器。这样可以直接测量流体的压强差，而不用分别测量后再进行对比。本实施例中，“第一预定值”、“第二预定值”、“第三预定值”、“第四预定值”和“第五预定值”可以根据实际需要设定。
当流体的流动为有需流动时，根据流量和时间可以获得流过管道107的流体的量，在每次持续流过管道107的流体的量不小于第二预定值时，通过控制器103使内阀门101关闭；或设定一次持续的使用流体的时间长度为第三预定值，在每次持续使用流体的时间不小于第三预定值时，通过控制器103使内阀门101关闭。
本实施例中，流体漏失监控装置还包括报警模块；报警模块与控制器103连接，具体而言，报警模块可以通过无线或有线与控制器103连接；报警模块用于当流体的流动是有需流动时，且持续流过管道107的流体的量不小于第二预定值，和/或流体的持续通流时间不小于第三预定值时，关闭内阀门101，然后发出报警信息，当报警模块的报警信息被解除时，打开内阀 门101，并重新判断持续流过管道107的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值；需要说明的是，报警信息的解除，可以是手机通过通信模块104与控制器103连接，然后从手机端进行解除；也可以通过人为关阀解除，该报警解除方式在实际中的一个具体应用为：当用户在淋浴时，如果一直开着淋浴，当持续流过管道107的流体的量不小于第二预定值，和/或流体的持续通流时间不小于第三预定值时，流体漏失监控装置就会判断为忘记关闭淋浴而断水；用户在淋浴时，手机也不在身边，出浴室拿手机解除报警或按动流体漏失监控装置的重启按钮，这都不方便；当发生断水时，用户只需及时把淋浴关闭，几秒后再打开淋浴，水就会又来了。这样既可以及时判断漏失的存在，又可以有效迎合客户超大用水量的需求；这种可有效迎合客户超大用水量需求的功能为重试功能；当报警模块的报警信息未被解除时，打开内阀门101，判断流量测量器102检测到的流体流量是否小于第四预定值：当检测到的流体流量不小于第四预定值时，判断存在漏失，关闭内阀门101；当检测到的流体流量小于第四预定值时，重新判断持续流过管道107的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值。需要说明的是，也可以在判断流体的流动不是有需流动时，同时关闭内阀门101和发出报警信息，但此时为漏失报警。
本实施例中，报警模块还用于当判断存在漏失后，发出报警信息。
本实施例中，报警模块包括声音报警器111和/或灯光报警器111。需要说明的是，本实施例中，报警模块不仅局限于声音报警器111、灯光报警器111，也可以根据实际情况选择其它形式的报警器111进行报警。
本实施例中，通信模块104为WIFI发射接收模块和/或蓝牙发射接收模块；流量测量器102为脉冲流量计，具体而言，控制器103包括中央处理单元114和计数单元112，计数单元112能够获取脉冲流量计产生的脉冲；中央处理单元114能够根据计数单元112获取的脉冲信号确定通过管道107中流体的流量；比如：根据计数单元112单位时间获取的脉冲数确定脉冲流量计产生的脉冲的频率，进而再根据该频率确定通过管道107中的流体流量。在 使用计数单元112的情况下，在每一工作周期，需要对单个工作周期的累加流量进行清零，如可以在脉冲流量计检测到的流体流量小于第一预定值时，使单个工作周期的累加流量清零。当然，流量测量器102不限于上述脉冲流量计，也可以是其他检测流体流量的装置。需要说明的是，通信模块104还可以为GSM模块、GPRS模块、WCDMA模块或LTE模块。
通过适当的设置，也可以使流体漏失监控装置具有累积计量功能。比如：在流量测量器102选用脉冲流量计的情况下，中央处理单元114在对单个工作周期的累加流量进行清零之前，保存每个单个工作周期的累加流量，所有单个工作周期的累加流量之和即为累积流量；在流量测量器102选用其他流量计的情况下，也可以通过中央处理单元114根据流量测量器102传送的信号对通过管道107的流体的量进行累积计量等。
本实施例中，控制器103还包括比较单元113。第一子压强传感器105和第二子压强传感器106分别与比较单元113相连接；这样，比较单元113能够对终端阀门108与内阀门101之间的流体压强和内阀门101与流体源109之间的流体压强进行比较，确定终端阀门108与内阀门101之间的流体压强与内阀门101与流体源109之间的流体压强之差的绝对值是否大于预定压强差，并将比较结果传送给中央处理单元114。确定终端阀门108与内阀门101之间的流体压强与内阀门101与流体源109之间的流体压强之差的绝对值是否大于预定压强差不仅局限于通过该方式获得，也可以采用其他方式确定，比如：可以将压强差转化为压力差，并利用该压力差驱动预定物体移动，进而根据该预定物体的位置确定终端阀门108与内阀门101之间的流体压强与内阀门101与流体源109之间的流体压强之差是否大于预定压强差。
本实施例中，还包括发电蓄电供电装置和遥控器110，发电蓄电供电装置与控制器103连接，为整个监控装置提供电能；遥控器110与控制器103连接，遥控器110通过无线方式与控制器103连接，进而可以远程控制流体漏失监控装置。该遥控器可以是红外遥控器。
本实施例中，如果经过自我检测证明不存在漏失，还可以通过设置内阀门101下一次进入关闭状态的时间间隔来降低内阀门101的关闭频率，以 降低装置的功耗及延长内阀门101的使用寿命。例如，在检测到终端阀门108与内阀门101之间部分的流体的压强不下降后，启动倒计时功能，倒计时为零之前，出现终端阀门108与内阀门101之间部分的流体流量小于第一预定值时，内阀门101不关闭；当倒计时为零后，出现终端阀门108与内阀门101之间部分的流体流量小于第一预定值时，内阀门101方可关闭。
本发明实施例还提供了一种流体漏失监控方法，该方法可以利用本实施例提供的流体漏失监控装置实施，但不限于利用上述流体漏失监控装置实施，也可以通过其他部件及部件组合实施。
本实施例提供的流体漏失监控方法中，将管道107连接流体源109，管道107上安装有终端阀门108和内阀门101，且内阀门101位于终端阀门108与流体源109之间。
参见图2所示，该方法包括以下步骤：
步骤S201：判断终端阀门108与内阀门101之间的流体流量是否小于第一预定值：当终端阀门108与内阀门101之间的流体流量小于第一预定值时，进入步骤S202，当终端阀门108与内阀门101之间的流体流量不小于第一预定值时，进入步骤S207。
步骤S202：关闭内阀门101。
步骤S203：然后确定终端阀门108与内阀门101之间的流体压强是否降低：当判断压强降低时，进入步骤S204，当判断压强未降低时，进入步骤S214，再进入步骤S201。需要说明的是，该步骤203中还可以通过确定终端阀门108与内阀门101之间的流体压强与内阀门101与流体源109之间的流体压强之差的绝对值是否大于预定压强差来进行：当该绝对值大于预定压强差时，进入步骤204，当该绝对值不大于预定压强差时，进行步骤S214，再进入步骤S201。
步骤S204：打开内阀门101。
步骤S205：判断流体流量是否小于第五预定值：当流体流量小于第五预定值时，进入步骤S206；当流体流量不小于第五预定值时，进入步骤S207。
步骤S206：判定为存在漏失，关闭内阀门101，报警器111发出报警信 息。需要说明的是，该步骤S206中，当判定为存在漏失时，内阀门101的开启或关闭，还可以根据实际情况来确定。
步骤S207：判断流体的流动是否为有需流动，当流体的流动不是有需流动时，进入步骤S206；当流体的流动是有需流动时，进入步骤S208。
步骤S208：判断持续流过所述管道107的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值。当持续流过管道107的流体的量不小于第二预定值时，和/或流体的持续通流时间不小于第三预定值时，进入步骤S209；当持续流过管道107的流体的量小于第二预定值时，和/或流体的持续通流时间小于第三预定值时，进入步骤S201。
步骤S209：关闭内阀门101。
步骤S210：发出报警信息。
步骤S211：判断报警是否被解除，当报警信息被解除时，进入步骤S212；当报警信息未被解除时，进入步骤S213。
步骤S212：打开内阀门101后，重新进入步骤S208。
步骤S213：打开内阀门101，判断流体流量是否小于第四预定值，当检测到的流体流量不小于第四预定值时，进入步骤S206；当检测到的流体流量小于第四预定值时，重新进入步骤S208。
步骤S214：降低内阀门101的关闭频率。
综上所述，本发明提供的流体漏失监控装置和监控方法能够在保持成本较低的情况下，根据管道内流体的实际运动情况，更加及时准确地判断管道是否存在流体漏失情况，判断管道存在流体漏失后，可选择性关闭阀门，及时阻止流体的继续漏失，避免各种次生灾害的发生，进而降低了因为流体漏失给家庭、企业及其社会造成的经济损失。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (10)

  1. 一种流体漏失监控装置，其特征在于，包括内阀门、流量测量器、控制器、通信模块和压强检测模块；所述内阀门、所述流量测量器、所述通信模块和所述压强检测模块分别与所述控制器连接；所述内阀门用于安装在管道上，且所述内阀门位于终端阀门与流体源之间，以控制所述管道的连通或断开；所述流量测量器用于检测所述终端阀门与所述内阀门之间的流体流量；所述压强检测模块用于检测所述终端阀门与所述内阀门之间的流体压强，以及所述内阀门与所述流体源之间的流体压强；所述通信模块用于与外围设备通信；所述控制器用于根据所述流量测量器检测到的流体流量、所述压强检测模块检测到的流体压强、所述通信模块接收到的信息控制所述内阀门的开启或关闭；
    当所述流量测量器检测到的流体流量小于第一预定值时，关闭所述内阀门；然后根据所述压强检测模块检测到的流体压强确定所述终端阀门与所述内阀门之间的流体压强是否降低，当判断压强降低时，打开内阀门，判断所述流量测量器检测到的流体流量是否小于第五预定值，当所述流量测量器检测到的流体流量小于所述第五预定值时，判断存在漏失，关闭内阀门；或，当所述流量测量器检测到的流体流量小于第一预定值时，关闭所述内阀门；然后根据所述压强检测模块检测到的流体压强确定所述终端阀门与所述内阀门之间的流体压强与所述内阀门与所述流体源之间的流体压强之差的绝对值是否大于预定压强差，当所述绝对值大于预定压强差时，打开内阀门，判断所述流量测量器检测到的流体流量是否小于第五预定值，当流量测量器检测到的流量小于所述第五预定值时，判断存在漏失，关闭内阀门；
    当流量测量器检测到的流体流量不小于所述第一预定值时，根据所述通信模块接收到的信息判断流体的流动是否为有需流动，当流体的流动不是有需流动时，判断存在漏失，关闭所述内阀门；当流体的流动是有需流动时，判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值，当持续流过所述管道的流体的 量不小于第二预定值时，和/或流体的持续通流时间不小于第三预定值时，关闭所述内阀门。
  2. 根据权利要求1所述的流体漏失监控装置，其特征在于，还包括报警模块；所述报警模块与所述控制器连接；所述报警模块用于当流体的流动是有需流动时，且持续流过所述管道的流体的量不小于第二预定值，和/或流体的持续通流时间不小于第三预定值时，关闭所述内阀门，然后发出报警信息；
    当报警模块的报警信息被解除时，打开所述内阀门，重新判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值；
    当报警模块的报警信息未被解除时，打开所述内阀门，判断所述流量测量器检测到的流体流量是否小于第四预定值：当检测到的流体流量不小于第四预定值时，判断存在漏失，关闭内阀门；当检测到的流体流量小于所述第四预定值时，重新判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值；
    所述报警模块还用于当判断存在漏失后，发出报警信息。
  3. 根据权利要求1或2所述的流体漏失监控装置，其特征在于，所述压强检测模块为压差传感器。
  4. 根据权利要求1或2所述的流体漏失监控装置，其特征在于，所述压强检测模块包括第一子压强传感器和第二子压强传感器。
  5. 根据权利要求2所述的流体漏失监控装置，其特征在于，所述报警模块包括声音报警器和/或灯光报警器。
  6. 根据权利要求1或2所述的流体漏失监控装置，其特征在于，所述通信模块为WIFI发射接收模块和/或蓝牙发射接收模块。
  7. 根据权利要求1或2所述的流体漏失监控装置，其特征在于，所述流量测量器为脉冲流量计。
  8. 根据权利要求1或2所述的流体漏失监控装置，其特征在于，还包括发电蓄电供电装置和遥控器，所述发电蓄电供电装置与所述控制器连接； 所述遥控器与所述控制器连接。
  9. 一种流体漏失监控方法，其特征在于，管道连接流体源，管道上安装有终端阀门和内阀门，且所述内阀门位于所述终端阀门与所述流体源之间，该方法包括：
    当所述管道内流体的流量小于第一预定值时，关闭所述内阀门；然后确定所述终端阀门与所述内阀门之间的流体压强是否降低，当判断压强降低时，打开内阀门，判断所述流体流量是否小于第五预定值，当所述流体流量小于第五预定值时，判断存在漏失，关闭内阀门；或，当所述管道内流体的流量小于第一预定值时，关闭所述内阀门；然后确定所述终端阀门与所述内阀门之间的流体压强与所述内阀门与所述流体源之间的流体压强之差的绝对值是否大于预定压强差，当所述绝对值大于预定压强差时，打开内阀门，判断所述流体流量是否小于第五预定值，当所述流体流量小于第五预定值时，判断存在漏失，关闭内阀门；
    当所述管道内流体的流量不小于所述第一预定值时，判断流体的流动是否为有需流动，当流体的流动不是有需流动时，判断存在漏失，关闭所述内阀门；当流体的流动是有需流动时，判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值，当持续流过所述管道的流体的量不小于第二预定值时，和/或流体的持续通流时间不小于第三预定值时，关闭所述内阀门。
  10. 根据权利要求9所述的流体漏失监控方法，其特征在于，当流体的流动是有需流动时，且持续流过所述管道的流体的量不小于第二预定值，和/或流体的持续通流时间不小于第三预定值时，关闭所述内阀门，然后发出报警信息；
    当报警信息被解除时，打开所述内阀门，重新判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值；
    当报警信息未被解除时，打开所述内阀门，判断所述流体流量是否小于第四预定值：当流体流量不小于第四预定值时，判断存在漏失，关闭内 阀门；当流体流量小于所述第四预定值时，重新判断持续流过所述管道的流体的量是否不小于第二预定值，和/或流体的持续通流时间是否不小于第三预定值；
    当判断存在漏失后，也发出报警信息。
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