CN207455197U - Pipeline leakage testing positioning experiment system - Google Patents
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- CN207455197U CN207455197U CN201621207721.0U CN201621207721U CN207455197U CN 207455197 U CN207455197 U CN 207455197U CN 201621207721 U CN201621207721 U CN 201621207721U CN 207455197 U CN207455197 U CN 207455197U
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Abstract
The utility model is related to a kind of research experiment system, especially a kind of pipeline leakage testing positioning experiment system is used to implement leak detection and positioning experiment of the different leakage detection methods to long distance delivery gas, fluid pipeline.Including conveyance conduit, medium conveying apparatus, suction wave detection device and acoustic emission detection system；Medium conveying apparatus includes conveyance conduit, media Containers, vacuum tank, water pump, oil pump, tank outlet flowmeter, tank entry flowmeter, tank outlet flowmeter, oil tank inlet flow rate meter, nitrogen cylinder outlet valve, tank outlet valve and tank outlet valve；Conveyance conduit bending part uses U-shaped pipe, and rest part is straight line pipeline section；Suction wave detection device includes pressure sensor, electromagnetic flowmeter, data collecting card and computer；Acoustic emission detection system includes acoustic emission sensor, signal preamplifier, acoustic emission detector and computer；Acoustic emission detector handles signal and transmits it to computer and analyzed.
Description
Technical field
The utility model is related to a kind of research experiment system, especially a kind of pipeline leakage testing positioning experiment system is used
In the different leakage detection methods of realization to the leak detection and positioning experiment of long distance delivery gas, fluid pipeline.
Background technology
At present, pipeline transportation is one of modern five big means of transportation, compared to other four kinds（Highway, water route, railway, aviation）
Means of transportation, it has many advantages, such as efficient, safe, convenient for management.Pipeline transportation is a kind of continuative transport mode, Transportation Efficiency
Rate is high；Pipeline is generally embedded in underground, from the influence of external environmental condition；Pipeline transportation generally not generation environment pollution and noise
It pollutes and transportation cost is low.Pipeline transportation occupies an important position in the conveying of petrochemical industry, natural gas and other fluids.It cuts
To the end of the year 2015, according to incompletely statistics, the oil gas pipeline total length that China is completed is more than 100000 kms.With pipe
The increase of line mileage, pipe-line equipment aging, the corrosion of pipeline wall surface, geological conditions variation（Such as geological movement, floods, earthquake）With
And artificial origin（It such as constructs, steal digging, the attack of terrorism）Caused pipe leakage accident increases year by year.
Pipeline once leaks, the pumped (conveying) medium leaked out（Such as crude oil, natural gas）It can not only cause huge
Economic loss can also pollute the ecological environment of tube circumference, meanwhile, if leakage has inflammable and explosive property, may be used also
Fire hazard even explodes, and causes huge personnel's property loss, generates bad social influence.Such as 2013 Qingdao
The yellow Pipeline Leak explosive incident in " 11.22 " sinopec east, precisely due to petroleum pipeline ruptures, crude oil leakage to storm sewer
And sea, and be ignited in operation process is repaired, a lot of detonations and fire occurs, this time event causes 63 people dead, 9 people
Missing, 156 people are injured.
At present, pipeline leakage testing and location technology form more mature theoretical system, but domestic application is in fact
The more advanced theoretical system of pipeline leakage testing and location technology above the pipeline of border has hysteresis quality.
The content of the invention
The purpose of this utility model is that part provides a kind of pipeline leakage testing positioning experiment system against the above deficiency, this
Purpose of utility model aims to solve the problem that three problems：1. pair new pipeline leakage testing and Location Theory technology are applied in actual pipeline
On feasibility studied；2. pair complete detection positioning device developed carries out test experiments, its performance indicator is evaluated；
3. the Multi-function experimental platform of the integrated pipelines leak detection location technology of exploitation, for comparing various detection location technologies
Quality, so as to be improved to pipeline leakage testing location technology.
A kind of pipeline leakage testing positioning experiment system of the utility model is that following technical scheme is taken to realize：
A kind of pipeline leakage testing positioning experiment system includes conveyance conduit, medium（Water, oil, nitrogen）Conveying device is born
Press ripple detection device and acoustic emission detection system.Medium conveying apparatus includes conveyance conduit, media Containers（Nitrogen cylinder, water tank, oil
Tank）, vacuum tank, water pump, oil pump, tank outlet flowmeter, tank entry flowmeter, tank outlet flowmeter, oil tank entrance stream
Gauge, nitrogen cylinder outlet valve, tank outlet valve, tank outlet valve；Conveyance conduit bending part uses U-shaped pipe, and rest part is
Straight line pipeline section by opening the input valve of different medium, allows pipeline to input gas and does gas medium experiment, can also put
Air body inputs water or oil to do liquid medium experiment.Media Containers are mounted at entrance, and vacuum tank goes out mounted on pipeline
At mouthful, valve is provided between nitrogen cylinder and conveyance conduit, valve, stream are disposed between water tank and conveyance conduit
Gauge and water pump are provided with valve, flowmeter and oil pump between oil tank and conveyance conduit.Compression pump is by liquid pilot medium
（Water, oil）Pipeline starting point is delivered to, is back to medium in container again by hose in pipeline terminal, formation circulates,
Pipe outlet is additionally provided with vacuum tank, can ensure that the pressure in pipeline is steady.The media Containers are provided with nitrogen cylinder, water
Case, oil tank.
Suction wave detection device includes pressure sensor, electromagnetic flowmeter, data collecting card, computer, in entrance
Pressure sensor and flowmeter are respectively arranged with exit, the output terminal and data collecting card of pressure sensor and flowmeter
Input terminal is connected, and the output terminal of data collecting card is connected with computer, and data collecting card can gather sensor and flowmeter
Signal, and transmit a signal to computer and analyzed and processed.
Acoustic emission detection system includes acoustic emission sensor, signal preamplifier, acoustic emission detector and computer,
Entrance and exit are respectively arranged with acoustic emission sensor, the input of the output terminal and preamplifier of acoustic emission sensor
End is connected, and the output terminal of preamplifier is connected with acoustic emission detector input terminal, acoustic emission detector output terminal and computer
It is connected, the signal of acoustic emission sensor is conveyed to acoustic emission detector, acoustic emission detector pair after amplifying by preamplifier
Signal is handled and transmits it to computer and analyzed.
The experimental channel is DN100 seamless steel pipes, and pipeline is installed on stent of the bottom with wheel, and stent uses
Be equal leg angle.Pipe-line system total height is the DN50 and DN200 of 2.2m, total length 100m, in addition also two 1m long
Seamless steel pipe, measure influence of the pipeline reducing diameter to signal for changing in pipeline a certain section.
In order to simulate actual leakage scene, which provides a kind of leakage analog form,
The straight-run of pipe road that control valve will be carried is changed at arbitrary replaceable tube coupling in the duct, and control valve is equipped with turbine on rear end
Flowmeter can so simulate the situation that pipeline is leaked in different position, reach the analog result to multipoint leakage.Secondly, lead to
Different size of leak can be simulated by overregulating the aperture of control valve, and leakage flow can be directly from the flow of control valve rear end
Meter is directly read, so as to measure influence of the leak size to leakage signal.
For pressure sensor using MIK-P300 pressure transmitters, range is -0.1 ~ 1000bar, precision 0.3,
0.5 grade, the data of the pressure sensor and electromagnetic flowmeter carry out data by YAV 16AD series usb datas capture card and adopt
Collection, transmission, the data collected are uploaded to computer and are stored and handled.YAV 16AD series usb data capture card quality
It is reliable and stable, interference, high-speed sampling, intelligent control, data combination etc. the effect of playing very well can inhibited, it can be ensured that on
The stability of data is passed, can preferably complete the work such as real time data processing, the deposit of continuous Quick Acquisition.The sound emission inspection
Surveying device includes SR40M acoustic emission sensors, PAI front sensors, SAEU2S-1016-10 type acoustic emission detectors.Sensor
Signal by preamplifier is amplified and is transferred to acoustic emission detector by inductive signal, acoustic emission detector to waveform signal into
Row processing, and frequency domain and power spectrum parameters are exported in real time to computer, realize continuous on-line monitoring, SAEU2S-1016-10 types
Acoustic emission detector uses USB2.0 communication interfaces, built-in 5 cards, the independent sound emission passage of single deck tape-recorder 2, the independence per passage
16bitAD precision, 10MHz sampling rates.
A kind of detection method of pipeline leakage testing positioning experiment system, its step are as follows：
（1）Experimental system is assembled according to pipeline leakage testing positioning experiment system structure first, checks various parts
Circuit, it is ensured that connection is good, check device air-tightness；
（2）Pipeline section with control valve is changed into a certain straight line pipeline section in the pipe-line system；
（3）The valve of container exit is opened, test medium is driven into pipeline by Opening pressure pump, and opens container Jie
Valve at matter recycling, flows medium circulation；
（4）After medium is full of in pipeline, computer is first turned on, computer is equipped with signal processing module LabVIEW, meter
Calculation machine obtains the pressure and flow signal of pipe ends, then signal when signal at this time is normal opens control threshold switch,
The registration of the flowmeter of control valve rear end is observed, certain time internal leakage can be calculated, control valve obtains at this time after opening
Pressure and flow signal measure the biography of time and signal in the duct used in signal transmission to pipe ends by sensor
Speed is broadcast, leakage positioning is carried out using negative pressure wave analysis according to the time difference of signal transmission to pipe ends；
（5）Similarly, when using the detection of sound emission method, the signal processing of acoustic emission analysis instrument and computer is first opened
Module LabVIEW, after opening and controlling threshold switch, acoustic emission sensor can perceive the sound wave that leakage generates and by signal transmission
Signal is amplified to preprocessor, amplified signal transmission to acoustic emission detector, acoustic emission detector can be right
Signal carries out various spectrum analysis, wavelet analysis, pattern-recognition, then is handled in a computer, can be with according to time-of-arrival loaction
Certain leak position；
（6）Calculate the specific location of leakage by suction wave analysis method and sound emission detection method, and with actual leakage
Position is compared, and is drawn error size, is then replaced leak position, measure multi-group data, draws experimental error；
（7）Then two tapered pipelines of DN50 pipeline sections and DN200 pipeline sections are changed into certain section in pipeline, then repeated above-mentioned
Method, influence of the analysis reducing to pipe leakage detection and localization.
The signal processing module uses LabVIEW modules.
A kind of pipeline leakage testing positioning experiment system is used for water, oil, gas conveyance conduit leak detection and positioning.
The beneficial effects of the utility model are that the pipeline leakage testing positioning experiment system of the utility model can be realized
Acquisition to part conveyance conduit operating parameter can be realized using a variety of leakage detection methods（As negative pressure wave method, sound emission are let out
Leak detection method etc.）The situation of change of pipeline operating parameter under research leakage operating mode, meanwhile, by the pipeline section for changing different tube diameters
It can realize the detection influenced due to caliber change on parameter；S bend pipe road bending part is connected using U-tube, compared to common
Straight tube pipe-line system, the system can study the influence that bend pipe is propagated for leakage waves.The experimental system is suitable for industry or city
The leak detection positioning experiment of city's high, medium and low voltage, long range rectilinear duct and curved pipe.
Description of the drawings
The utility model is further illustrated with specific experiment example below in conjunction with the accompanying drawings.
Fig. 1 is the structure diagram of the pipeline leakage testing positioning experiment system of the utility model.
Fig. 2 is the experimental channel front view of the utility model.
Fig. 3 is the experimental channel side view of the utility model.
Fig. 4 is the sectional view of the pipeline section with control valve of the utility model.
Fig. 5 is the sectional view of the DN50 pipeline sections of the utility model.
Fig. 6 is the sectional view of the DN100 pipeline sections of the utility model.
Fig. 7 is that the relevant function method of the utility model determines the method schematic diagram of leak position.
In figure：1 be nitrogen cylinder, 2 be water tank, 3 be oil tank, 4 be conveyance conduit, 5 be U-tube section, 6 be band control valve pipe
Section, 7 be electromagnetic flowmeter, 8 be pressure sensor, 9 be acoustic emission sensor, 10 be preamplifier, 11 be acoustic emission detection
Instrument, 12 be data collecting card, 13 be computer, 14 be support of pipelines, 15 be vacuum tank, 16 be nitrogen cylinder outlet valve, 17 be water
Pump, 18 be tank outlet flowmeter, 19 be tank outlet valve, 20 be tank entry flowmeter, 21 be oil pump, 22 be tank outlet
Flowmeter, 23 be tank outlet valve, 24 be oil tank inlet flow rate meter, 25 be DN50 pipeline sections, 26 be DN200 pipeline sections, 27 be control
Valve, 28 be control valve rear end flowmeter.
Specific embodiment
Specific embodiment of the present utility model is further described in detail with reference to the accompanying drawings and examples.Below
Embodiment is not used to be limited to the scope of the utility model for illustrating the utility model.
Referring to the drawings 1-7, a kind of pipeline leakage testing positioning experiment system includes conveyance conduit, medium（Water, oil, nitrogen）
Conveying device, suction wave detection device and acoustic emission detection system.Medium conveying apparatus includes conveyance conduit（4）, media Containers
（Nitrogen cylinder（1）, water tank（2）, oil tank（3））, vacuum tank（15）, water pump（17）, oil pump（21）, tank outlet flowmeter（18）、
Tank entry flowmeter（20）, tank outlet flowmeter（22）, oil tank inlet flow rate meter（24）, nitrogen cylinder outlet valve（16）, water
Case outlet valve（19）, tank outlet valve（23）；Conveyance conduit bending part uses U-shaped pipe（5）, rest part is straight line pipeline section,
By opening the input valve of different medium, pipeline is allow to input gas and does gas medium experiment, can also emptying gas it is defeated
Enter water or oil to do liquid medium experiment.Media Containers are mounted at entrance, vacuum tank（15）Mounted on pipeline exit,
In nitrogen cylinder（1）With conveyance conduit（4）Between be provided with valve（16）, in water tank（2）With conveyance conduit（4）Between set successively
It is equipped with valve（19）, flowmeter（18）And water pump（17）, in oil tank（3）With conveyance conduit（4）Between be provided with valve（23）, stream
Gauge（22）And oil pump（21）.Compression pump is by liquid pilot medium（Water, oil）Pipeline starting point is delivered to, is passed through in pipeline terminal soft
Medium is back in container by pipe again, and formation circulates, and vacuum tank is additionally provided in pipe outlet（15）, can ensure in pipeline
Pressure it is steady.The media Containers are provided with nitrogen cylinder（1）, water tank（2）, oil tank（3）.
Suction wave detection device includes pressure sensor（8）, electromagnetic flowmeter（7）, data collecting card（12）, computer
（13）, pressure sensor is respectively arranged in entrance and exit（8）And flowmeter（7）, pressure sensor（8）And flow
Meter（7）With data collecting card（12）Input terminal be connected, data collecting card（12）Output terminal and computer（13）It is connected, data
Capture card（12）Gather sensor（8）And flowmeter（7）Signal, and transmit a signal to computer（13）It carries out at analysis
Reason.
Acoustic emission detection system includes acoustic emission sensor（9）, signal preamplifier（10）, acoustic emission detector（11）
And computer（13）, acoustic emission sensor is respectively arranged in entrance and exit（9）, acoustic emission sensor（9）With it is preceding
Put amplifier（10）Input terminal be connected, preamplifier（10）Output terminal and acoustic emission detector（11）Input terminal is connected,
Acoustic emission detector（11）Output terminal and computer（13）It is connected, acoustic emission sensor（9）Signal pass through preamplifier
（10）Acoustic emission detector is conveyed to after amplification（11）, acoustic emission detector（11）Signal is handled and transmits it to meter
Calculation machine（13）It is analyzed.
A kind of pipeline leakage testing positioning experiment system is used for water, oil, gas conveyance conduit leak detection and positioning.
The experimental channel is DN100 seamless steel pipes, and pipeline is installed in the stent that bottom carries wheel（14）On, stent
（14）Using equal leg angle.Pipe-line system total height is 2.2m, the DN50 of total length 100m, in addition also two 1m long
（25）And DN200（26）Seamless steel pipe, measure influence of the pipeline reducing diameter to signal for changing in pipeline a certain section.
In order to simulate actual leakage scene, which provides a kind of leakage analog form,
Control valve will be carried（27）Straight-run of pipe road（6）It changes at arbitrary replaceable tube coupling in the duct, the installation of control valve rear end
There is turbine flowmeter（28）, the situation that pipeline is leaked in different position can be so simulated, reaches the simulation knot to multipoint leakage
Fruit.Secondly, adjusting control valve is passed through（27）Aperture can simulate different size of leak, leakage flow can be directly from control
The flowmeter of valve rear end processed（28）It directly reads, so as to measure influence of the leak size to leakage signal.
Pressure sensor（8）Using MIK-P300 pressure transmitters, range is -0.1 ~ 1000bar, and precision is
0.3rd, 0.5 grade, the pressure sensor（8）And electromagnetic flowmeter（7）Data pass through YAV 16AD series usb data capture cards
（12）Data acquisition, transmission are carried out, the data collected are uploaded to computer（13）It is stored and is handled.YAV 16AD series
Usb data capture card（12）Stable quality is reliable, can inhibit interference, high-speed sampling, intelligent control, data combination etc. hair
Shoot color effect, it can be ensured that upload the stability of data, can preferably complete real time data processing, continuous Quick Acquisition is deposited
The work such as disk.The acoustic emission detection system includes SR40M acoustic emission sensors（9）, PAI front sensors（10）、SAEU2S-
1016-10 type acoustic emission detectors（11）.Sensor sensing signal passes through preamplifier（10）Signal is amplified and is transferred to
Acoustic emission detector（11）, acoustic emission detector（11）Waveform signal is handled, and frequency domain and power spectrum parameters is real-time
It exports to computer（13）, realize continuous on-line monitoring, SAEU2S-1016-10 type acoustic emission detectors（11）Using USB2.0
Communication interface, built-in 5 cards, the independent sound emission passage of single deck tape-recorder 2, per passage independence 16bitAD precision, 10MHz sampling rates.
A kind of detection method of pipeline leakage testing positioning experiment system, its step are as follows：
Experimental system is assembled according to pipeline leakage testing positioning experiment system structure diagram first, checks each portion
Circuit between part, it is ensured that connection is good, the air-tightness of check device, then does the reality for medium with nitrogen gas and water and oil respectively
It tests.When being detected positioning with suction wave, by the pipeline section with control valve（6）Change a certain rectilinear tubes in the pipe-line system
Section, first opens nitrogen cylinder（1）Valve（16）Nitrogen is made to enter in conveyance conduit, when nitrogen is full of in pipeline, opens and calculates
Machine, computer are equipped with signal processing module LabVIEW, and computer obtains the pressure and flow that signal processing software obtains pipe ends
Signal, signal at this time is normal signal, then control valve in opening conduits（27）Switch, observation control valve rear end flowmeter
（28）Registration, certain time internal leakage, control valve can be calculated（27）Pressure at this time and flow signal are obtained after unlatching,
The spread speed of time and signal in the duct used in signal transmission to pipe ends measured, according to signal transmission to pipe
The time difference at road both ends carries out leakage positioning using negative pressure wave analysis.Nitrogen cylinder is closed after experiment（1）Valve, blow-down pipe
Nitrogen in road, then opens water tank（2）Outlet valve（19）And water pump（17）, the outlet valve of oil tank can also be opened
（23）And oil pump（21）, the experiment of liquid medium is done, experimental procedure is as described above.
When using acoustic emission detection method, by taking water is medium as an example, water tank is opened（2）Outlet valve（19）And water pump
（17）, make water in conveyance conduit（4）Then internal circulation flow opens acoustic emission analysis instrument（11）And computer（13）Signal at
Module is managed, is opening control valve（27）After switch, acoustic emission sensor（9）The sound wave that leakage generates can be perceived and pass signal
Transport to preprocessor（10）Signal is amplified, amplified signal transmission to acoustic emission detector（11）, sound emission inspection
Survey instrument（11）Various spectrum analysis, wavelet analysis, pattern-recognition can be carried out to signal, then in computer（13）In handled,
It can certain leak position according to time-of-arrival loaction.
Calculate the specific location of leakage by suction wave analysis method and sound emission detection method, and with actual leak position
It is compared, draws error size, then replace leak position, measure multi-group data, draw experimental error；Then DN50 is managed
Section（25）With DN200 pipeline sections（26）Two tapered pipelines change to certain section in pipeline, then the repeatedly above method, and analysis reducing is to pipe
Road leaks the influence of detection and localization.
The signal processing module uses LabVIEW modules.
Specifically, illustrated so that negative pressure wave detecting method harmony emits detection method as an example：
Negative pressure wave detecting method：When line fracture leaks（Control valve is opened in this experimental provision makes medium
It flows out, is leakage point at control valve place）, the transient negative pressure ripple that leakage point abrupt pressure reduction generates is along tube wall from leak to conveying
Pipeline upstream and downstream are propagated, and suction wave is measured by the time difference and suction wave of upstream and downstream measurement point in pipeline by sensor
In spread speed, it may be determined that leak position recycles correlation analysis, wavelet transformation, the data processing methods such as pattern-recognition,
Leakage and precise positioning can be accurately identified.
Fig. 6 is the method schematic diagram that relevant function method determines leak position, to pipeline upstream and downstream pressure P1、P2Pressure signal
Relevant treatment it is as follows：
(1)
Wherein, L P1、P2The distance between, a is negative pressure velocity of wave propagation.
Correlation function remains relative constant in no leak, and when leaking generation, R (r) will change, and work as change
When change amount reaches certain numerical value, then it is assumed that leaked.t1、t2Respectively negative pressure wave reaches P1、P2Point time, when r=
t1- t2When, R (r) is up to maximum, i.e.,
(2)
In theory：
(3)
Leakage point and P2The distance between be：
(4)
Acoustic emission detection method：When pipeline leaks（Control valve is opened in this experimental provision flows out medium,
It is leakage point at where control valve）, there are pipeline inside and outside differential pressure at leakage point, high frequency stress wave can be formed on tube wall, it should
The information that stress wave carries leakage point is propagated to pipe ends, and acoustic emission sensor can perceive this signal, and be passed
Signal is amplified to preamplifier, preamplifier is again by amplified signal transmission to acoustic emission detector, sound hair
Various spectrum analysis, wavelet analysis, pattern-recognition can be carried out to signal by penetrating detector, then be handled in a computer, according to
Time-of-arrival loaction can certain leak position.
Claims (3)
1. a kind of pipeline leakage testing positioning experiment system, it is characterised in that：Including conveyance conduit, medium conveying apparatus, negative pressure
Ripple detection device and acoustic emission detection system；
Medium conveying apparatus includes conveyance conduit, media Containers, vacuum tank, water pump, oil pump, tank outlet flowmeter, water tank and enters
Mouth flowmeter, tank outlet flowmeter, oil tank inlet flow rate meter, nitrogen cylinder outlet valve, tank outlet valve and tank outlet valve；It is defeated
Sending pipeline bending part, rest part is straight line pipeline section using U-shaped pipe, and by opening the input valve of different medium, medium holds
Device is mounted at entrance, and vacuum tank is mounted on pipeline exit, and valve is provided between nitrogen cylinder and conveyance conduit,
Valve, flowmeter and water pump are disposed between water tank and conveyance conduit, valve is provided between oil tank and conveyance conduit
Door, flowmeter and oil pump；Liquid pilot medium is delivered to pipeline starting point by compression pump, pipeline terminal by hose by medium again
It is back in container, formation circulates, and vacuum tank is additionally provided in pipe outlet, can ensure that the pressure in pipeline is steady；
Suction wave detection device includes pressure sensor, electromagnetic flowmeter, data collecting card and computer；In entrance and go out
Pressure sensor and flowmeter are respectively arranged at mouthful, the input of the output terminal and data collecting card of pressure sensor and flowmeter
End is connected, and the output terminal of data collecting card is connected with computer, and data collecting card can gather the signal of sensor and flowmeter,
And it transmits a signal to computer and is analyzed and processed；
Acoustic emission detection system includes acoustic emission sensor, signal preamplifier, acoustic emission detector and computer；In pipeline
Acoustic emission sensor, the output terminal of acoustic emission sensor and the input terminal phase of preamplifier are respectively arranged at entrance and exit
Even, the output terminal of preamplifier is connected with acoustic emission detector input terminal, and acoustic emission detector output terminal is connected with computer,
The signal of acoustic emission sensor is conveyed to acoustic emission detector after amplifying by preamplifier, acoustic emission detector to signal into
Row handles and transmits it to computer and analyzed.
2. pipeline leakage testing positioning experiment system according to claim 1, it is characterised in that：The media Containers are set
It is equipped with nitrogen cylinder, water tank, oil tank.
3. pipeline leakage testing positioning experiment system according to claim 1, it is characterised in that：The experimental channel is
DN100 seamless steel pipes, pipeline are installed on stent of the bottom with wheel, and stent is using equal leg angle, pipe-line system
Total height is the seamless steel pipe of 2.2m, total length 100m, the in addition DN50 and DN200 of also two 1m long, for changing pipe
Influence of the pipeline reducing diameter to signal is measured in road for a certain section.
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| CN201621207721.0U CN207455197U (en) | 2016-11-09 | 2016-11-09 | Pipeline leakage testing positioning experiment system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029578A (en) * | 2018-08-09 | 2018-12-18 | 北京建筑大学 | A kind of feedwater piping safe operation monitoring system and method |
| CN110533985A (en) * | 2019-10-19 | 2019-12-03 | 广州番禺职业技术学院 | A kind of pressure pipeline listens leakage Experiment Training system |
| CN110836755A (en) * | 2019-11-30 | 2020-02-25 | 宁波东泰水务科技有限公司 | Water distribution pipe network leakage test equipment |
| CN115077816A (en) * | 2021-03-11 | 2022-09-20 | 中国石油天然气股份有限公司 | Gathering and transportation pipeline corrosion leakage experiment system |
-
2016
- 2016-11-09 CN CN201621207721.0U patent/CN207455197U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109029578A (en) * | 2018-08-09 | 2018-12-18 | 北京建筑大学 | A kind of feedwater piping safe operation monitoring system and method |
| CN110533985A (en) * | 2019-10-19 | 2019-12-03 | 广州番禺职业技术学院 | A kind of pressure pipeline listens leakage Experiment Training system |
| CN110836755A (en) * | 2019-11-30 | 2020-02-25 | 宁波东泰水务科技有限公司 | Water distribution pipe network leakage test equipment |
| CN110836755B (en) * | 2019-11-30 | 2021-10-22 | 宁波东泰水务科技有限公司 | Water distribution pipe network leakage test equipment |
| CN115077816A (en) * | 2021-03-11 | 2022-09-20 | 中国石油天然气股份有限公司 | Gathering and transportation pipeline corrosion leakage experiment system |
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