CN101576430A - Leakage detection equipment - Google Patents
Leakage detection equipment Download PDFInfo
- Publication number
- CN101576430A CN101576430A CNA2009101364019A CN200910136401A CN101576430A CN 101576430 A CN101576430 A CN 101576430A CN A2009101364019 A CNA2009101364019 A CN A2009101364019A CN 200910136401 A CN200910136401 A CN 200910136401A CN 101576430 A CN101576430 A CN 101576430A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- electric wire
- detection equipment
- leakage detection
- equipment according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 136
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 12
- 238000004891 communication Methods 0.000 description 11
- 239000003990 capacitor Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000000700 radioactive tracer Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention provides a leakage detection equipment which is equipped with a detection pipeline for detecting leakage of pipeline where liquid flows through and determines whether the liquid leaks from the pipeline based on voltage change of the detection pipeline. The leakage detection equipment is provided, which detects whether the detection pipeline comprising a plurality of leads leaks. The leakage detection equipment comprises the detection pipeline comprising a first to a third wire, wherein end ports of the first to third wires are connected electrically via a diode; a pipeline measuring unit for measuring a pipeline voltage in a special position point of each of the second and third wires after applying constant current to the first wire; and a microcomputer for detecting whether the pipeline leaks based on the pipeline voltage of each of the second and third wires.
Description
Technical field
The present invention relates to leakage detection equipment (leakage detecting apparatus), and more particularly, relate to and the detection pipeline (detection pipeline) that is used for the leakage on the pipeline that tracer liquid flows through has been installed and has been changed to determine that based on the voltage that detects pipeline liquid is whether from the leakage detection equipment of pipe leakage.
Background technology
Because for example the pipeline of water pipeline (water pipeline) or oil pipeline (oil pipeline) generally is embedded in subsurface, so when liquid because the damage of pipeline or its are aging during from pipe leakage, detect leakage in early days less than pipeline, but after the leakage that liquid takes place, just detect, this needs a lot of times and expense.For handling these problems, conventional method is installed the detection pipeline of the leakage that is used for detecting pipeline, and estimates the location point that leaked based on the measured voltage that detects pipeline.
Fig. 1 illustrates conventional leakage detection equipment.Referring to Fig. 1, conventional leakage detection equipment has been installed the detection pipeline that comprises four lines (2 detection line (detection lines) and 2 ordinary lines (normallines)) along pipeline, steady current is applied to the detection pipeline, measure the voltage of special position point, and determine whether the detection pipeline disconnects or short circuit.Equally, the switch that conventional leakage detection equipment is controlled by the control signal of using microprocessor output changes the connection type that detects pipeline, steady current is applied to the detection pipeline, measures the voltage of special position point, and determine whether to take place to leak and leak wherein.
If under the situation that first switch SW, 1 closure and second switch SW2 open, measure the voltage of a node N1, because it is known detecting every meter pipeline resistance of pipeline and flowing through the pipeline electric current that detects pipeline, conventional leakage detection equipment can calculate the length that detects pipeline.Equally, if first switch SW 1 open and the situation of second switch SW2 closure under measure the voltage of this node N1, owing to can predict the voltage of this node N1, be to disconnect or short circuit so conventional leakage detection equipment can be determined this detection pipeline based on the institute's computational length that detects pipeline.
If under first situation that switch SW 1 is opened and second switch SW2 opens, measure the voltage of this node N1, because it is known detecting every meter pipeline resistance of pipeline and flowing through the pipeline electric current that detects pipeline, so conventional leakage detection equipment can determine whether to have taken place to leak and leak wherein.Do not take place if leak as yet, the voltage of this node N1 is 0V so; Yet, taking place if leak, the voltage of this node N1 is identical with the voltage of the location point A that has leaked so.Therefore, Chang Gui leakage detection equipment can be determined the location point A that leaked based on the voltage of node N1.
Fig. 2 illustrates conventional Leak Detection pipeline.With reference to figure 2, conventional Leak Detection pipeline comprises four lines (2 detection line and 2 ordinary lines), and wherein detection line and ordinary lines are wound to prevent it separated from one another through strand.Detection line uses big relatively resistive conductor as heart yearn (core wires), and ordinary lines uses copper cash or iron wire as heart yearn.Detection line and ordinary lines are coated with tygon (vinyl) so that its insulation and prevent that it is damaged.Therebetween, ordinary lines is used for determining whether detection line disconnects, and whether detection line is used for tracer liquid and leaks.
Therebetween, conventional leakage detection equipment uses and line (its connection status is controlled by the switch) conduct of two detection lines and two ordinary lines combinations detects pipeline, and this has increased expense widely.Because the detection pipeline is installed on and is embedded in the underground pipeline (for example water pipeline or oil pipeline), so the number of electric wire has influenced expense widely.Therefore, need to increase detection efficiency and reduce leakage detection equipment and the Leak Detection pipeline that is included in the number of wires in the detection pipeline simultaneously.
Summary of the invention
The invention provides a kind of leakage detection equipment, it connects the end portion of Leak Detection pipeline via diode, and by flowing of the steady current that uses microprocessor to control to be applied to the Leak Detection pipeline, thereby comprise in use and detect this Leak Detection pipeline under the situation of Leak Detection pipeline of fewer purpose line effectively and whether disconnect with short circuit and whether leak, and the invention provides this Leak Detection pipeline.
According to an aspect of the present invention, provide a kind of detection pipeline that comprises many leads by use to detect the leakage detection equipment that whether has leaked, described leakage detection equipment comprises: detect pipeline, it comprises first electric wire to the, three electric wires, and wherein the end portion of first electric wire and second electric wire is electrically connected via diode; The pipeline survey unit, it measures each the pipeline voltage of special position point in second electric wire and the 3rd electric wire after steady current is applied to first electric wire; And microprocessor, it determines whether to leak based on each the pipeline voltage in the second and the 3rd electric wire.
Description of drawings
By describing one exemplary embodiment of the present invention in detail referring to accompanying drawing, above-mentioned and further feature of the present invention and advantage will become apparent, wherein:
Fig. 1 illustrates conventional leakage detection equipment.
Fig. 2 illustrates conventional Leak Detection pipeline.
Fig. 3 illustrates leakage detection equipment according to an embodiment of the invention.
Fig. 4 illustrates Leak Detection pipeline according to an embodiment of the invention.
Fig. 5 explanation Leak Detection pipeline according to another embodiment of the present invention.
Fig. 6 explanation Leak Detection pipeline according to another embodiment of the present invention.
The block scheme of Fig. 7 explanation leakage detection equipment according to another embodiment of the present invention.
Fig. 8 is the circuit diagram of the pipeline survey unit of Fig. 7 according to an embodiment of the invention.
Fig. 9 is the circuit diagram of the steady current generation unit of Fig. 7 according to an embodiment of the invention.
Figure 10 is the figure of the screen display unit (screen displayunit) of Fig. 7 according to an embodiment of the invention.
Figure 11 is the circuit diagram of the alarm unit (alarm unit) of Fig. 7 according to an embodiment of the invention.
Figure 12 is the circuit diagram of the software input block (software inputunit) of Fig. 7 according to an embodiment of the invention.
Figure 13 is the circuit diagram of the external communications units (externalcommunication unit) of Fig. 7 according to an embodiment of the invention.
Figure 14 is the circuit diagram of the power supply unit (power supply unit) of Fig. 7 according to an embodiment of the invention.
Embodiment
Referring to the accompanying drawing that is used to illustrate one exemplary embodiment of the present invention so as to obtain to of the present inventionly fully understand, its advantage and by implementing the purpose that the present invention realizes.
Hereinafter, will describe the present invention more fully, illustrate one exemplary embodiment of the present invention in the accompanying drawing referring to accompanying drawing.When description is of the present invention, omit detailed description about relevant well-known function or configuration, it may obscure main points of the present invention.
Fig. 3 illustrates leakage detection equipment according to an embodiment of the invention.Referring to Fig. 3, the leakage detection equipment of present embodiment has been installed the detection pipeline that comprises 3 lines (2 detection line and 1 ordinary lines) along pipeline, steady current is applied to the detection pipeline, measures the voltage of special position point, and determine whether the detection pipeline disconnects and short circuit.Equally, the switch that leakage detection equipment is controlled by the control signal of using microprocessor output changes the connection type that detects pipeline, steady current is applied to the detection pipeline, measures the voltage of special position point, and determine whether to take place to leak and leak wherein.
If first switch SW 1 open and the situation of second switch SW2 closure under measure two node N2 and N3 voltage separately, because it is known detecting every meter pipeline resistance of pipeline and flowing through the pipeline electric current that detects pipeline, leakage detection equipment can calculate the length that detects pipeline.Equally, if two the pipeline resistance of detection line is X1 (Ω/M), article one, the pipeline resistance of ordinary lines is X2 (Ω/M), the voltage of node N2 is V2 (V), the voltage of node N3 is V3 (V), and the pipeline electric current that detects pipeline is Ic (A), can calculate the length L that detects pipeline according to following equation 1 so.
If first switch SW 1 open and the situation of second switch SW2 closure under measured node N1 to N3 voltage separately, whether leakage detection equipment can be determined to detect pipeline and disconnect and short circuit so.Disconnect if detect pipeline, because electric current does not flow to node N3, the voltage of node N3 is 0V so.If detect the pipeline short circuit, the voltage of node N1 and N2 voltage mutually the same or node N2 and N3 is mutually the same so.
If measured node N2 and N3 voltage separately under the situation that first switch SW, 1 closure and second switch SW2 open, because it is known detecting every meter pipeline resistance of pipeline and flowing through the pipeline electric current that detects pipeline, leakage detection equipment can determine whether to have taken place to leak and leak wherein so.Do not take place if leak as yet, prevent flowing of electric current owing to connect the diode of 2 detection lines, between node N2 and N3 so electric current does not flow.Therefore, the voltage of node N2 and N3 is 0V.
, if leak, prevent flowing of electric current although connect the diode D1 of 2 detection lines therebetween, the electric current that flows through node N1 flows between node N2 and N3 owing to the liquid that leaks from specific location point.Therefore, the voltage of node N2 and N3 is not 0V but is respectively specific voltage.Specifically, because the voltage of node N2 is identical with the voltage of the location point A that has leaked, if the differences among voltages of computing node N2 and N3, leakage detection equipment can be determined the location point A that leaked so.
Fig. 4 illustrates Leak Detection pipeline according to an embodiment of the invention.Referring to Fig. 4, the Leak Detection pipeline of present embodiment comprises 3 lines (2 detection line and 1 ordinary lines), and wherein detection line is connected to prevent separated from one another and to form heart yearn with triangular shaped with ordinary lines.Detection line use relatively large resistive conductor (for example, nichrome wire (nickel-chrome lines)) as heart yearn to increase accuracy of measurement.The heart yearn of detection line can have the diameter greater than 0.5mm separately.The heart yearn of ordinary lines can have the diameter greater than 1.0mm.
Fig. 5 explanation Leak Detection pipeline according to another embodiment of the present invention.Referring to Fig. 5, the coating around the surface of detecting pipeline of the Leak Detection pipeline of present embodiment is partly removed predetermined gap so that detect the location point that leak of liquid has taken place.Coating removes width and can be about 1mm.Coating removes the degree of depth and can identically with the thickness of coating be damaged so that prevent heart yearn.Coating removes the gap can be between about 1cm and about 5cm.Yet coating removes the gap and can suitably adjust where necessary.Do not remove coating therebetween, around ordinary lines.
Fig. 6 explanation Leak Detection pipeline according to another embodiment of the present invention.Referring to Fig. 6, be convenient structure, the Leak Detection pipeline of present embodiment is indicated distance by removing predetermined gap around the coating layer portion on the surface of detecting pipeline.Indicate described distance by following steps: doublely in 1M remove the distance that coating is indicated 1M, in 5M, remove the distance that coating is indicated 5M continuous three times, and in 10M, remove the distance that coating is indicated 10M continuous four times.Do not remove coating therebetween, around ordinary lines.
Fig. 7 is the block scheme of leakage detection equipment according to another embodiment of the present invention.Referring to Fig. 7, leakage detection equipment comprises microprocessor 110, pipeline survey unit 120, steady current generation unit (constant current generating unit) 130, screen display unit 140, alarm unit 150, software input block 160, external communications units 170 and power supply unit 180.Hereinafter, now will describe above element in detail.
Steady current generation unit 130 is by using the driving power voltage that receives from power supply unit 180 to produce to have the steady current with the irrelevant predetermined amplitude of the size of pull-up resistor, and steady current is fed to pipeline survey unit 120.Equally, steady current generation unit 130 further comprises temperature-compensation circuit, and it is used to prevent load current because a kind of reference voltage changes according to temperature and changes.Equally, screen display unit 140 shows the data that receive from microprocessor 110 on screen, and can comprise light emitting diode (light-emitting diodes, LEDs), LCD (liquidcrystal display, LCD) and flexible digital indicator (Flexible Numeric Display, FND).
Fig. 8 is the circuit diagram of the pipeline survey unit 120 of Fig. 7 according to an embodiment of the invention.Referring to Fig. 8, pipeline survey unit 120 comprises a plurality of resistor R 1 and arrives R6, a plurality of capacitor C3 to C5 and a plurality of photoelectrical coupler (photo-couplers) PC1 and PC2.Hereinafter, now will describe above element in detail.Specifically, now will describe in regular turn the computer tube line length, detect to disconnect, detect short circuit, detect the method for leaking, detect the location point that leaked etc.
Photoelectrical coupler PC1 and PC2 comprise two diode D1 and D2 and two transistor T R1 and TR2 respectively.When electric current flows through diode D1 and D2, transistor T R1 and TR2 operation.Resistor R 1 and R2 are the elements that allows predetermined current flows photoelectrical coupler PC1 and PC2.If the low level control signal is applied to resistor R 1 and R2, transistor T R1 and TR2 be owing to the electric current that flows through diode D1 and D2 is operated so, and steady current Ic flows through detection line L1 and L2.Resistor R 3 to R5 makes up to C5 with capacitor C3 respectively, and each combination is as low-pass filter.
The method of computer tube line length now will be described.By the low level control signal is applied to resistor R 2, steady current Ic flows through detection line L2, and the steady current Ic that flows through detection line L2 flows through resistor R 6 to ordinary lines L3.Measured node N2 and N3 voltage separately, and the differences among voltages of computing node N2 and N3.Pipeline resistance and pipeline electric current based on differences among voltages, detection line L2 and the ordinary lines L3 of node N2 and N3 come the computer tube line length.
The method that disconnects that detects now will be described.By the low level control signal is applied to resistor R 2, steady current Ic flows through detection line L2.The voltage of measured node N3.Determine based on the voltage of node N3 whether detection line L2 or ordinary lines L3 disconnect.
When detection line L2 or ordinary lines L3 disconnection, because steady current Ic does not flow through resistor R 3, so the voltage of node N3 is 0V.
The method that detects short circuit now will be described.By the low level control signal is applied to resistor R 2, steady current Ic flows through detection line L2.Measured node N1 is to N3 voltage separately.Whether determine to detect pipeline L1 and L2 and ordinary lines L3 based on node N1 to the voltage of N3 disconnects.When detecting pipeline L1 and L2 and ordinary lines L3 disconnection, the voltage of node N1 and N2 voltage mutually the same or node N2 and N3 is mutually the same.
The method of leaking that detects now will be described.By the low level control signal is applied to resistor R 1, steady current Ic flows through detection line L1.Measured node N2 and N3 voltage separately.Voltage based on node N2 and N3 determines whether to leak.When leaking, because steady current Ic does not flow through detection line L2 owing to backward dioded (inverse direction diode) D3, so the voltage of node N3 is 0V.
The method that detects the location point that has leaked now will be described.By the low level control signal is applied to resistor R 1, steady current Ic flows through detection line L2.Measured node N2 and N3 voltage separately.The differences among voltages of computing node N2 and N3.Calculate the location point that has leaked based on the differences among voltages of node N2 and N3, the pipeline resistance and the pipeline electric current that detect pipeline L1 and L2.When leaking, steady current Ic flows through ordinary lines L3 to detection line L2.
Fig. 9 is the circuit diagram of the steady current generation unit 130 of Fig. 7 according to an embodiment of the invention.Referring to Fig. 9, steady current generation unit 130 comprises reference voltage and adjusts integrated circuit (referencevoltage adjustment integrated circuit) IC1, a plurality of resistor R 1 and R2 and diode D1.Now will describe described element in detail.Specifically, also temperature-compensation circuit element R2 and D1 will be described.
Reference voltage is adjusted integrated circuit (IC) 1 and is kept the reference voltage that is applied to two ends.For instance, when environment temperature was 25 ℃, the reference voltage that is applied to reference voltage adjustment integrated circuit (IC) 1 was maintained at 67.7mV.Specifically, when load current Ic changed owing to the change of the size of pull-up resistor, reference voltage was adjusted integrated circuit (IC) 1 and is changed the reference voltage that is applied to two ends according to the change of load current Ic.For instance, if the increase that reduces to cause load current Ic of pull-up resistor, produce steady current by reducing this reference voltage so, and if the increase of pull-up resistor cause reducing of load current Ic, produce steady current by increasing this reference voltage so.
Therebetween, although pull-up resistor remains unchanged, the reference voltage that reference voltage is adjusted integrated circuit (IC) 1 changes according to environment temperature, and it may cause the change of load current Ic.For instance, if environment temperature increases by 1 ℃, the reference voltage of reference voltage adjustment integrated circuit (IC) 1 increases by 277 μ V so.Therefore, need a kind of circuit to come to compensate the change of this reference voltage according to environment temperature.For this reason, present embodiment uses diode D1.If environment temperature increases by 1 ℃, both end voltage is reduced to 2.6mV so.Therefore, the characteristic of diode D1 can be in order to compensate the change of this reference voltage according to environment temperature.
In more detail, if environment temperature increases, the voltage at two of resistor R 1 terminal places increases so, and flows through the electric current increase of resistor R 1.Yet if environment temperature increases, the voltage of two of diode D1 terminals reduces and the electric current that flows through resistor R 2 reduces so.Therefore, adjust resistor R 1 and R2 flow through with counteracting resistor R 1 electric current increase and flow through the reducing of electric current of resistor R 2, thereby produce and the irrelevant steady current of environment temperature.Specifically, the resistance of resistor R 2 can be 10 times of resistance of resistor R 1.
Figure 10 is the figure of the screen display unit 140 of Fig. 7 according to an embodiment of the invention.Referring to Figure 10, screen display unit 140 comprises a plurality of LED (POWER, RUN and RTX), a plurality of flexible digital indicator (FNDs) and a plurality of integrated circuit (IC1 and IC2).Hereinafter, now will describe described element in detail.
Integrated circuit (IC) 1 and IC2 are transistor array IC, and will be enlarged into the signal that can be shown by LED or FNDs from the data that microprocessor receives.Under the situation of regular supply electric power, connect POWERLED, and under the situation of regular supply electric power not, close POWER LED.Connect RUN LED under the normal situation of pipeline detecting, and close RUN LED detecting under the unusual situation of pipeline.Under the normal situation of communications status, connect RTX LED, and under the unusual situation of communications status, close RTX LED.If FNDs has closed condition and leaks, use a numeral behind the radix point to show the distance of the location point that has leaked so.
Figure 11 is the circuit diagram of the alarm unit 150 of Fig. 7 according to an embodiment of the invention.With reference to Figure 11, alarm unit 150 comprises resistor R 1, transistor T R1, diode D1 and hummer BZ1.Hereinafter, now will describe described element in detail.
The control signal that receives from microprocessor is transferred to transistor T R1 via resistor R 1, and if input high level control signal, transistor T R1 operation and hummer BZ1 operation so.Diode D1 prevents the reactance noise that hummer BZ1 is produced.When detecting under the situation that takes place to leak in the pipeline, microprocessor output control signal is to be used to operate hummer BZ1.
Figure 12 is the circuit diagram of the software input block 160 of Fig. 7 according to an embodiment of the invention.Referring to Figure 12, software input block 160 comprises capacitor C1, a plurality of resistor R 1 and R2 and a push switch SW1.Hereinafter, now will describe described element in detail.
Figure 13 is the circuit diagram of the external communications units 170 of Fig. 7 according to an embodiment of the invention.Referring to Figure 13, external communications units 170 comprises data-switching integrated circuit (IC) 1, a plurality of resistor R 1 and R2 and a plurality of Zener diode (Zener diodes) ZD1 and ZD2.Hereinafter, now will describe described element in detail.
Data-switching integrated circuit (IC) 1 conversion will be transferred to the data of signal RS-485, data transmission to high-end computer, will be converted to the signal that can be distinguished by microprocessor from the data of high-end computer transmission, and described signal is transferred to microprocessor.Zener diode ZD1 and ZD2 remove noise or the rub-out signal that is included in the communication line.Resistor R 1 is communication tube line end resistor (communication pipeliine end resistor).Resistor R 2 is receiving end pullup resistor (receiving end pull-up resistor).High-end computer is in order to the management leakage detection equipment.Microprocessor disconnects/notification data is transferred to high-end computer under the situation of short circuit/leakage.
Figure 14 is the circuit diagram of the power supply unit 180 of Fig. 7 according to an embodiment of the invention.Referring to Figure 14, power supply unit 180 comprises TNR element (rheostat) TNR1, transformer TRANS1, bridge diode (bridge diode) BD1, a plurality of capacitor C2, C3 and C5, a plurality of electrolytic condenser (electrolytic capacitors) C1, C4 and C6 and a plurality of constant voltage regulator IC1 and IC2.Hereinafter, now will describe described element in detail.
TNR elements T NR1 receives AC 220V, and removes superpotential (overvoltage) and noise.Transformer TRANS1 is converted to AC 12V with AC 220V.Bridge diode BD1 carries out rectification and produces DC 12V the waveform of AC 12V.Electrolytic condenser C1 and C4, capacitor C2 and C3 and constant voltage regulator IC1 produce DC 5V from DC 9V, and wherein DC 5V is used for the circuit relevant with microprocessor.
As mentioned above, leakage detection equipment of the present invention can detect contingent leakage in pipeline effectively under use comprises the situation of the detection pipeline of fewer purpose electric wire when comparing with the detection pipeline of routine, thus the minimizing expense.
Though come the specific the present invention that illustrates and described with reference to one exemplary embodiment of the present invention, but be understood by those skilled in the art that, can under the situation of the spirit and scope of the present invention that do not depart from claims and defined, carry out the various changes on form and the details.
Claims (18)
1, a kind of leakage detection equipment is characterized in that its detection pipeline that comprises many leads by use detects whether to leak that described leakage detection equipment comprises:
Described detection pipeline, it comprises first electric wire to the, three electric wires, and the end portion of wherein said first electric wire and second electric wire is electrically connected via diode;
The pipeline survey unit, it measures the pipeline voltage in the special position point of described second electric wire and the 3rd electric wire after steady current being applied to described first electric wire; And
Microprocessor, it determines whether to take place described leakage based on each the described pipeline voltage in described second electric wire and the 3rd electric wire.
2, leakage detection equipment according to claim 1 is characterized in that described microprocessor calculates the location point that described leakage takes place based on the described pipeline differences among voltages of described second electric wire and the 3rd electric wire.
3, leakage detection equipment according to claim 2 is characterized in that described microprocessor calculates the described location point that described leakage takes place by every meter the pipeline resistance that uses described second electric wire and the 3rd electric wire.
4, leakage detection equipment according to claim 3 is characterized in that the described steady current that described microprocessor flows through described second electric wire and the 3rd electric wire by use calculates the described location point that described leakage takes place.
5, leakage detection equipment according to claim 1 is characterized in that described first electric wire and second electric wire have than the big resistance value of described the 3rd electric wire.
6, leakage detection equipment according to claim 5 is characterized in that described first electric wire and second electric wire comprise the heart yearn that is formed by nickel and chromium.
7, leakage detection equipment according to claim 5 is characterized in that described first electric wire and second electric wire are centered on by the coating that is partly removed predetermined gap.
8, leakage detection equipment according to claim 7 is characterized in that described first electric wire and second electric wire are by indicate the coating of distance to center on by predetermined gap.
9, leakage detection equipment according to claim 1 is characterized in that described first electric wire to the, three electric wires are with triangular shaped connection.
10, leakage detection equipment according to claim 1 is characterized in that described pipeline survey unit comprises the switch that described steady current is relayed to described detection pipeline.
11, leakage detection equipment according to claim 10 is characterized in that described switch is according to operating from the control signal of described microprocessor output.
12, leakage detection equipment according to claim 11 is characterized in that described switch is a photoelectrical coupler.
13, leakage detection equipment according to claim 1 further comprises: the steady current generation unit, it produces described steady current.
14, leakage detection equipment according to claim 13 is characterized in that described steady current generation unit comprises the compensating circuit that comes bucking voltage to change according to temperature.
15, leakage detection equipment according to claim 14 is characterized in that described steady current generation unit comprises the described compensating circuit that contains diode and resistor.
16, leakage detection equipment according to claim 1, it is characterized in that measuring each the pipeline voltage of special position point in described second electric wire and the 3rd electric wire described steady current being applied to described pipeline survey unit after described second electric wire, and
Wherein said microprocessor calculates the length of described detection pipeline based on the pipeline differences among voltages of described first electric wire and second electric wire.
17, leakage detection equipment according to claim 16 is characterized in that after described steady current is applied to described second electric wire described pipeline survey unit measures the pipeline voltage of the special position point of described the 3rd electric wire, and
Wherein said microprocessor determines based on the voltage of described the 3rd electric wire whether described detection pipeline disconnects.
18, leakage detection equipment according to claim 17, it is characterized in that measuring each the pipeline voltage of special position point in described first electric wire to the, three electric wires described steady current being applied to described pipeline survey unit after described second electric wire, and
Whether wherein said microprocessor determines the short circuit of described detection pipeline based on the described differences among voltages of described first electric wire to the, three electric wires.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020080041870A KR100965302B1 (en) | 2008-05-06 | 2008-05-06 | A apparatus for sensing a water leakage |
| KR10-2008-0041870 | 2008-05-06 | ||
| KR1020080041870 | 2008-05-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101576430A true CN101576430A (en) | 2009-11-11 |
| CN101576430B CN101576430B (en) | 2011-11-30 |
Family
ID=41271421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101364019A Expired - Fee Related CN101576430B (en) | 2008-05-06 | 2009-05-05 | Leakage detection equipment |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100965302B1 (en) |
| CN (1) | CN101576430B (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563363A (en) * | 2012-01-13 | 2012-07-11 | 深圳市祥为测控技术有限公司 | Liquid leakage detecting positioning system |
| CN102762969A (en) * | 2010-02-17 | 2012-10-31 | 泰科热控有限责任公司 | Sensor-powered wireless cable leak detection |
| CN102834587A (en) * | 2010-04-09 | 2012-12-19 | 国际壳牌研究有限公司 | Leak detection in circulated fluid systems for heating subsurface formations |
| CN102967418A (en) * | 2012-11-23 | 2013-03-13 | 广东易事特电源股份有限公司 | Water leakage detection positioning system and device |
| CN103502788A (en) * | 2011-04-29 | 2014-01-08 | 伊顿公司 | Degradation monitoring system for hose assembly |
| CN103912794A (en) * | 2014-04-14 | 2014-07-09 | 华中科技大学 | Water seepage detecting system of de-ionized water cooling device |
| CN104006300A (en) * | 2013-02-27 | 2014-08-27 | 华邦电子股份有限公司 | Portable liquid leakage sensing device |
| CN106122774A (en) * | 2016-08-05 | 2016-11-16 | 倪晨钧 | A kind of pipeline leakage detection method |
| CN108870092A (en) * | 2018-08-01 | 2018-11-23 | 北京中彤节能技术有限公司 | A kind of wiring type pepe monitoring system |
| CN109580135A (en) * | 2018-12-06 | 2019-04-05 | 英业达科技有限公司 | Leakage detection plate and leakage monitor system |
| CN109682555A (en) * | 2018-12-26 | 2019-04-26 | 郑州云海信息技术有限公司 | A kind of system and method for BMC detection liquid cooled server leakage |
| CN110836532A (en) * | 2018-08-17 | 2020-02-25 | E.G.O.电气设备制造股份有限公司 | Heating device and method for operating a heating device |
| CN111006820A (en) * | 2018-10-05 | 2020-04-14 | 三菱电机大楼技术服务株式会社 | Liquid leakage detection device |
| CN111386452A (en) * | 2017-11-27 | 2020-07-07 | 美国圣戈班性能塑料公司 | Leak detection system and methods of making and using same |
| CN113340545A (en) * | 2021-05-28 | 2021-09-03 | 深圳市祥为测控技术有限公司 | Anti-electromagnetic interference leakage positioning system and method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101145008B1 (en) | 2011-12-05 | 2012-05-11 | 주식회사 그린솔루션 | Oil-leakage detector with control system |
| CN106402667B (en) * | 2016-11-24 | 2018-08-14 | 南京西奥仪表测控有限公司 | A kind of online resistance formula leakage protective system |
| CN109443669B (en) * | 2018-09-30 | 2021-03-26 | 深圳市英威腾电源有限公司 | Water leakage detection method and device |
| CN110967764A (en) * | 2019-11-06 | 2020-04-07 | 中船重工西安东仪科工集团有限公司 | Water immersion switch device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0555039A (en) * | 1991-08-21 | 1993-03-05 | Murata Mfg Co Ltd | Mounting structure of inductor |
| JPH09236507A (en) * | 1995-12-26 | 1997-09-09 | Sumiei Kogyo Kk | Method for detecting water leakage portion of pipe embedded in the ground, cable for detecting water leakage portion, and pipe embedded in the ground |
| JP4131231B2 (en) * | 2003-12-02 | 2008-08-13 | オムロン株式会社 | Leak detector |
| KR100852039B1 (en) * | 2006-11-01 | 2008-08-13 | 류종국 | Water leakage sensing device of heat piping and its method |
-
2008
- 2008-05-06 KR KR1020080041870A patent/KR100965302B1/en active IP Right Grant
-
2009
- 2009-05-05 CN CN2009101364019A patent/CN101576430B/en not_active Expired - Fee Related
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102762969B (en) * | 2010-02-17 | 2016-02-24 | 泰科热控有限责任公司 | Sensor power without cable wire Leak Detection |
| CN102762969A (en) * | 2010-02-17 | 2012-10-31 | 泰科热控有限责任公司 | Sensor-powered wireless cable leak detection |
| CN102834587A (en) * | 2010-04-09 | 2012-12-19 | 国际壳牌研究有限公司 | Leak detection in circulated fluid systems for heating subsurface formations |
| CN103502788A (en) * | 2011-04-29 | 2014-01-08 | 伊顿公司 | Degradation monitoring system for hose assembly |
| CN103502788B (en) * | 2011-04-29 | 2016-06-08 | 伊顿公司 | Hose deterioration monitoring system |
| CN102563363A (en) * | 2012-01-13 | 2012-07-11 | 深圳市祥为测控技术有限公司 | Liquid leakage detecting positioning system |
| CN102967418A (en) * | 2012-11-23 | 2013-03-13 | 广东易事特电源股份有限公司 | Water leakage detection positioning system and device |
| CN102967418B (en) * | 2012-11-23 | 2016-06-15 | 广东易事特电源股份有限公司 | A kind of leak localization system and device |
| CN104006300A (en) * | 2013-02-27 | 2014-08-27 | 华邦电子股份有限公司 | Portable liquid leakage sensing device |
| CN103912794B (en) * | 2014-04-14 | 2016-05-25 | 华中科技大学 | A kind of infiltration detection system of deionized water cooling device |
| CN103912794A (en) * | 2014-04-14 | 2014-07-09 | 华中科技大学 | Water seepage detecting system of de-ionized water cooling device |
| CN106122774A (en) * | 2016-08-05 | 2016-11-16 | 倪晨钧 | A kind of pipeline leakage detection method |
| CN111386452A (en) * | 2017-11-27 | 2020-07-07 | 美国圣戈班性能塑料公司 | Leak detection system and methods of making and using same |
| US12013313B2 (en) | 2017-11-27 | 2024-06-18 | Saint-Gobain Performance Plastics Corporation | Leak detection system and method of making and using the same |
| CN108870092A (en) * | 2018-08-01 | 2018-11-23 | 北京中彤节能技术有限公司 | A kind of wiring type pepe monitoring system |
| CN110836532A (en) * | 2018-08-17 | 2020-02-25 | E.G.O.电气设备制造股份有限公司 | Heating device and method for operating a heating device |
| US11585574B2 (en) | 2018-08-17 | 2023-02-21 | E.G.O. Elektro-Geraetebau Gmbh | Heating device and method for operating a heating device |
| CN110836532B (en) * | 2018-08-17 | 2023-03-10 | E.G.O.电气设备制造股份有限公司 | Heating device and method for operating a heating device |
| CN111006820A (en) * | 2018-10-05 | 2020-04-14 | 三菱电机大楼技术服务株式会社 | Liquid leakage detection device |
| CN111006820B (en) * | 2018-10-05 | 2023-08-04 | 三菱电机大楼技术服务株式会社 | Liquid leakage detection device |
| CN111006820B8 (en) * | 2018-10-05 | 2023-09-15 | 三菱电机楼宇解决方案株式会社 | Liquid leakage detection device |
| CN109580135A (en) * | 2018-12-06 | 2019-04-05 | 英业达科技有限公司 | Leakage detection plate and leakage monitor system |
| CN109682555A (en) * | 2018-12-26 | 2019-04-26 | 郑州云海信息技术有限公司 | A kind of system and method for BMC detection liquid cooled server leakage |
| CN113340545A (en) * | 2021-05-28 | 2021-09-03 | 深圳市祥为测控技术有限公司 | Anti-electromagnetic interference leakage positioning system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20090116134A (en) | 2009-11-11 |
| KR100965302B1 (en) | 2010-06-22 |
| CN101576430B (en) | 2011-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101576430B (en) | Leakage detection equipment | |
| KR101963853B1 (en) | Fault section detection device by connecting point of underground distribution line | |
| KR101006710B1 (en) | Leak detection system | |
| CN105695997A (en) | Safety protection method for underground metal pipeline | |
| AU2013214446A1 (en) | Fault detection in subsea power cables | |
| CN105281573A (en) | Power supply system and short circuit and/or bad connection detection method thereof, and power converter thereof | |
| AU2010100428A4 (en) | Method and Apparatus for Power Supply Fault Detection | |
| KR101109753B1 (en) | A system for sensing a water leakage | |
| KR20100038505A (en) | System and method for watching pipeline | |
| NO320815B1 (en) | Method and apparatus for painting physical parameters in a production well in a sediment layer or in a subsurface fluid storage reservoir | |
| US20220187346A1 (en) | Medium voltage sensor using a multi-component resistive voltage divider | |
| US20090277252A1 (en) | Leakage detecting apparatus | |
| KR20100079352A (en) | Load display distribute transformer and display device thereof | |
| RU189742U1 (en) | DEVICE FOR REMOTE MEASUREMENT AND MONITORING OF OPERATION PARAMETERS OF ELECTROCHEMICAL PROTECTION OF PIPELINES OF HEAT NETWORKS OF CHANNEL GASKET | |
| KR101529476B1 (en) | Insulation resistance monitoring system of solar power module string | |
| PL181300B1 (en) | System for transmitting signals through a field line | |
| US20120249120A1 (en) | Current loop detection system and current loop detection method thereof | |
| JP2007298414A (en) | Electric power measuring instrument | |
| CA2897233C (en) | Method for controlling heating and communication in a pipeline system | |
| JP2003513237A5 (en) | ||
| CN114878992A (en) | Pipeline insulation monitoring method and device | |
| KR102424331B1 (en) | Corrosion management automation system of city gas piping | |
| KR100300458B1 (en) | Double Warm Tube With Multiple Loop and Multiple Leakage Sensing Apparatus Using The Same | |
| CN217879572U (en) | Coaxial cable electric leakage measuring device | |
| EP1730940A1 (en) | Electrical wire joint fault detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20111130 Termination date: 20190505 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |