CN104950859A - Device and method for removing accumulated fluids in low-lying positions of pipeline and monitoring concentration of corrosion inhibitor on line - Google Patents
Device and method for removing accumulated fluids in low-lying positions of pipeline and monitoring concentration of corrosion inhibitor on line Download PDFInfo
- Publication number
- CN104950859A CN104950859A CN201510386095.XA CN201510386095A CN104950859A CN 104950859 A CN104950859 A CN 104950859A CN 201510386095 A CN201510386095 A CN 201510386095A CN 104950859 A CN104950859 A CN 104950859A
- Authority
- CN
- China
- Prior art keywords
- hydrops
- gas
- pipeline
- liquid
- corrosion inhibitor
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention relates to a device and a method for removing accumulated fluids in low-lying positions of a pipeline and monitoring the concentration of a corrosion inhibitor on line. A spiral flow generation main pipeline in the device is connected with a wet natural gas gathering and transportation pipeline in an acid gas field, a spiral flow generator is arranged in the spiral flow generation main pipeline, so that gas in the main pipeline flows annularly, the gas-liquid two-phase spiral flow and centrifugal separation effect is generated, and gas-liquid separation is realized; wave pipes and liquid drop traps are arranged, and the condition that the separation effect is affected due to the fact that gas-liquid two-phase flow forms slug flow in the device is prevented; a corrosion inhibitor concentration distribution curve is formed by measuring the conductivity, the temperature and the ultrasonic wave speed of the accumulated fluids in an accumulated fluid collecting barrel and on the basis of an artificial neural network model, and the concentration monitoring function of the corrosion inhibitor is realized; a corrosion inhibitor concentration data transmission system is established, data are transmitted to a station control room in real time, and a basis is provided for optimization of the filling quantity of corrosion inhibitors; a lifting pipeline for the accumulated fluids is designed, the accumulated fluids in an accumulated fluid buffer tank are lifted through high-pressure natural gas in the gathering and transportation pipeline, the accumulated fluids enter a ground storage tank, and the truck loading and transportation are realized.
Description
Technical field
The present invention relates to a kind of pipeline low-lying place hydrops to get rid of and density of corrosion inhibitor on-Line Monitor Device and method, belong to oil gas ground gathering-transferring technology field.
Background technology
In the eliminating of high sulfur Gas Fields moisture gathering system low-lying place hydrops and density of corrosion inhibitor on-line monitoring, on open source literature, foreign study person does not propose relevant hydrops and gets rid of and density of corrosion inhibitor on-Line Monitor Device design proposal or on-line monitoring method, studies in China person mostly rests on theoretical research stage, the report of not relevant tangibility achievement in research.
High sulfur Gas Fields adopts moisture gathering and transportation technology, may face gas hydrate synthesis risk, slug flow forms risk, corrosion risk, bring out unsafe factor, there are the corresponding technical issues that need to address.The hydrops eliminating of pipeline low-lying place and density of corrosion inhibitor on-Line Monitor Device are from guaranteeing the height that pipeline safety is carried, the factor of comprehensive analyzing influence height sulfur Gas Fields gathering line system flow security, to get rid of pipeline low-lying place hydrops for means, reach the object controlling rock gas flow instabilities.Meanwhile, the concentration of on-line monitoring corrosion inhibiter, for the optimization of corrosion inhibiter adding amount provides foundation.
Visible, the original hydrops of liquid plug and the low-lying place of pipeline at low-lying place is arrived by removing upstream, avoid downstream line hydrops amount excessive, control hydrate produces, prevent the formation of slug flow, suppress corrosive pipeline, have important practical significance, optimize corrosion inhibiter adding amount simultaneously and can produce significant economic benefit.
Summary of the invention
A kind of pipeline low-lying place hydrops is the object of the present invention is to provide to get rid of and density of corrosion inhibitor on-Line Monitor Device and method, so that purging line low-lying place hydrops give reasonably optimizing to density of corrosion inhibitor better, guarantee the stable operation of acid gas field inner wet gas gathering line.
The present invention mainly solves following problem: 1. design Upstream section plug flow on-line monitoring system, by setting up monitored area in moisture gathering line upstream, realize the density of slug flow in pipeline, length, speed data on-line analysis and arrangement, determine the time that low-lying place hydrops is removed; 2. design low-lying place hydrops remover, analyze the time that moisture gathering line upstream liquid plug arrives low-lying place, revolve the parts such as main pipeline, waveform pipe, gas-liquid cyclone separator, drop catcher by rising hydrops is removed; 3. be equipped with low-lying place hydrops remover on-line control system, the key factor that analyzing influence hydrops is got rid of, reasonable construction electric control system, in conjunction with special algorithm, realizes the automatic control to explosion-proof type solenoid valve and throttle valve opening; 4. designing density of corrosion inhibitor on-Line Monitor Device, by measuring hydrops temperature, conductivity, ultrasound wave velocity of propagation in hydrops, realizing density of corrosion inhibitor on-line monitoring function; 5. design hydrops lifting pipeline, utilize wet gas gathering line inner high voltage gas to carry out lifting to hydrops in hydrops surge tank, hydrops enters surface storage tank, entrucking transport processing; 6. set up density of corrosion inhibitor data transmission system, guarantee real-time data transmission, for the optimization of corrosion inhibiter adding amount provides foundation.
To achieve these goals, technical scheme of the present invention is as follows.
A kind of pipeline low-lying place hydrops is got rid of and density of corrosion inhibitor on-Line Monitor Device, comprise and revolved main pipeline 1, explosion-proof type solenoid valve (2,11), hydrops gathering barrel 3, gas-liquid cyclone separator (4,5), waveform pipe (6,7), drop catcher (8,9), gas lifting pipeline 10, gas injection pipeline 12, throttling valve 13, hydrops surge tank 14, air current spray nozzle 15, hydrops lifting pipeline 16, accumulator tank 17, on-line pressure sealant storage tank 18.
Described revolves main pipeline 1 and is connected successively with hydrops gathering barrel 3 by explosion-proof type solenoid valve 2, described gas-liquid cyclone separator 4 revolves main pipeline 1 with described, hydrops gathering barrel 3 is connected by pipeline, described gas-liquid cyclone separator 4 is connected by pipeline successively with waveform pipe 6, drop catcher 8, and described gas lifting pipeline 10 is by through for the inner wet gas gathering line of drop catcher 8 and gas field; Described gas-liquid cyclone separator 5 revolves main pipeline 1 with described, hydrops gathering barrel 3 is connected by pipeline, described gas-liquid cyclone separator 5, waveform pipe 7, drop catcher 9 is connected successively by pipeline, and described gas lifting pipeline 10 is by through for the inner wet gas gathering line of drop catcher 9 and gas field; Described gas injection pipeline 12 is made up of throttling valve 13, air current spray nozzle 15; Described hydrops gathering barrel 3 is connected successively with explosion-proof type solenoid valve 11, hydrops surge tank 14, and hydrops surge tank 14 is connected with accumulator tank 17 by described hydrops lifting pipeline 16, and described accumulator tank 17 is connected by pipeline with on-line pressure sealant storage tank 18.
Low-lying place hydrops method for removing: the eliminating of low-lying place hydrops and density of corrosion inhibitor on-Line Monitor Device mounting arrangements, in the buried rectangle hole of building with reinforced concrete, are convenient to make regular check on and keep in repair.The control to explosion-proof type solenoid valve and throttle valve opening is realized by automatic control system, the correct time at low-lying place is arrived by Upstream section plug flow on-line monitoring system determination liquid plug, the explosion-proof type solenoid valve in hydrops remover is opened when liquid plug is about to arrive low-lying place, carry out hydrops collection, this device is opened at every turn, collect the liquid plug because slug flow produces, original for low-lying place hydrops is got rid of in the lump simultaneously.Rise and revolve several fixing guide vanes that the installation of main pipeline local interior wall has certain laying angle, make fluid form gas-liquid two-phase helical flow, be convenient to gas-liquid separation.Rise and revolve main pipeline both sides and tangentially connect 2 branch's hydrops gathering lines, branch's hydrops gathering line is connected with gas-liquid cyclone separator, and gas-liquid cyclone separator is connected with waveform pipe, and waveform pipe is connected with drop catcher.Rise and to revolve in main pipeline a part of liquid due to the centrifugal separating effect that helical flow produces and flow directly into hydrops gathering barrel, the first time realizing hydrops collects, another part takes liquid gas by tangentially entering branch's hydrops gathering line, by gas-liquid cyclone separator, secondary separation is carried out to biphase gas and liquid flow, the second time realizing hydrops is collected, enter waveform pipe again to suppress slug flow further, finally realize third time collection by drop catcher to drop, gas phase enters gas lifting pipeline and returns wet gas gathering line.Hydrops in hydrops surge tank provides power to be lifted to ground by the high-pressure natural gas in gas injection pipeline, enters on-line pressure sealant storage tank, entrucking transport processing.Its concrete steps are:
(1) when liquid plug in upstream arrives low-lying place, explosion-proof type solenoid valve 2 is opened automatically, and now the hydrops at low-lying place and upstream liquid have entered and revolved main pipeline 1, makes gas-liquid form helical flow, promote gas-liquid separation, gas field inner wet gas gathering line throughput rate is 50 ~ 70 × 10
4m
3/ d, defeated pressure are 2 ~ 4MPa, gas liquid ratio is 23000 ~ 35000m
3/ m
3;
(2) spiral gas-liquid two-phase flow revolves main pipeline downwards towards cone flowing along rising, and drop gets rid of to inner-walls of duct, by the collision with wall, finally falls into leakage fluid dram and is separated, and enters hydrops gathering barrel 3; Rotate and lower air-flow arrival cone time, due to the contraction of conical shape, the tangential velocity of air-flow improves constantly, air motion makes peripheral gas flow pressure raise, and forms low-pressure area like this in cone center part, when a certain position, gas arrival cone bottom, just concentrate to pipeline center, with identical sense of rotation rise revolve main pipeline 1 inside from bottom to top helical flow, finally, the gas upwards making helical flow tangentially enters gas-liquid cyclone separator (4,5);
(3) through rising, to revolve the fluid that main pipeline 1 tangentially enters gas-liquid cyclone separator (4,5) be still biphase gas and liquid flow, it may be liquid holdup, the biphase gas and liquid flow flowed out from gas-liquid cyclone separator (4,5) top enters waveform pipe (6,7) respectively, fluid after being suppressed slug flow by waveform (6,7) pipe is by drop catcher (8,9), further the drop carried secretly in gas is removed, be fed back to the inner wet gas gathering line in gas field through gas lifting pipeline 10; The liquid flowed out from gas-liquid cyclone separator (4,5) bottom enters hydrops gathering barrel 3;
(4) wet gas is flowed out by the inner wet gas gathering line in gas field, through throttling valve 13 step-down process, pressure is down to 0.1 ~ 0.2MPa by 2 ~ 4MPa, enter air current spray nozzle 15, finally discharged by accumulator tank 17 upper opening, enter fuelgas pipeline, fuelgas pipeline and the laying in one ditch of wet gas gathering line;
(5) hydrops in hydrops gathering barrel flows into hydrops surge tank 14 through explosion-proof type solenoid valve 11, there is provided high-pressure natural gas as power by gas injection pipeline 12, carry hydrops and enter accumulator tank 17 via hydrops lifting pipeline 16, hydrops flows into on-line pressure sealant storage tank 18, entrucking transport processing.
Helical flow pipe cyclone designs: rise and revolve pipeline section A place, local installation helical flow pipe cyclone B in main pipeline 1, change pipe border flow boundary condition; By arranging several fixing guide vane C with certain laying angle at local pipeline section A inwall, it is 3 ~ 6 that guide vane C installs number, blade and axial angle are 10 ~ 30 °, when fluid is by this pipeline section, not only travel forward vertically, and creating circumferential movement, the resultant motion of the two defines spiral flow in pipes; The diameter of helical flow pipe cyclone B is identical with pipeline diameter, the guide vane C that pipeline section A inside is fixing and tube wall are fixedly linked, for reducing resistance, guide vane leading edge frustrates into obtuse, for avoiding streaming, guide vane trailing edge is processed into wing, several stators install time with etc. arc length or etc. central angle be fixed on tube wall by certain laying angle.
The research of density of corrosion inhibitor on-line monitoring and Functional Design: the conducting probe I for detecting collected hydrops conductivity being installed in hydrops gathering barrel 3, in conducting probe I, being integrated with the thermistor for detected temperatures parameter; Ultrasonic liquid level sensor H has ultrasonic transmission/reception function, simultaneously for detecting hydrops liquid level; On hydrops gathering barrel D sidewall, symmetry is provided with ultrasound transmitting transducer F and ultrasound wave receiving transducer G, for acoustic velocity measutement; By on-line monitoring hydrops conductivity, hydrops temperature, the velocity of propagation of ultrasound wave in hydrops, adopt artificial nerve network model, calculate the concentration of alcohol in hydrops, and then calculate density of corrosion inhibitor.
Artificial neural network training comprises the following steps:
(1) configuring the corrosion inhibitor solution of m kind concentration known in laboratory, wherein randomly drawing 100 kinds for testing to the training result of artificial neural network.
(2) often kind of solution conductivity at a certain temperature and ultrasound wave velocity of propagation is in the solution measured respectively.
(3) arrange the data obtained, form sample training data, m kind corrosion inhibiter records conductivity K under temperature T and ultrasound wave velocity of propagation V in the solution respectively.
(4) given expectation value B, initial weight W and biased b, input the 100 groups of data randomly drawed and test to the artificial neural network after training, calculate output valve.Deviation e between the output of calculating actual value and expectation value export, judges whether to reach density of corrosion inhibitor standard-required.If reach density of corrosion inhibitor standard-required, terminate training, obtain desirable artificial nerve network model.If do not reach density of corrosion inhibitor standard-required, amendment connects weights, then re-training, until reach the density of corrosion inhibitor standard-required preset.
Density of corrosion inhibitor online monitoring data is transmitted:
The real-time Transmission of density of corrosion inhibitor data is realized by wireless transport module.Wireless data transfer module attachment wireless-transmission network, obtains network IP, connects IP and the port of remote computer.The IP of remote computer and port are configured in wireless data transfer module by AT setting command, control wireless data transfer module connect remote computer by AT bind command.The data that online acquisition arrives are by data transmitting/receiving equipment and base station communication, by base station, data are sent to wireless data transmission network, control room, station or Central Control Room is reached by wireless data transmission network, be convenient to technician's immediate analysis process data, for the optimization of acid gas field rock gas moisture collection defeated process corrosion inhibiter adding amount provides foundation.
This beneficial effect of the invention is:
(1) the present invention is mainly for high sulfur Gas Fields moisture gathering system, getting rid of and density of corrosion inhibitor on-Line Monitor Device, carrying out rationally, effectively getting rid of to pipeline gas hydrops by designing low-lying place hydrops, ensures that the defeated technique of rock gas wet air duct realizes.This invention is by arranging slug flow on-line monitoring system in hydrops remover upstream, low-lying place, calculate the length of liquid plug, speed and density, in conjunction with low-lying place hydrops method for removing, realize the action adjustment of low-lying place hydrops remover, get rid of hydrops, and then slow down the internal corrosion of rock gas moisture conveyance conduit, reduce hydrate and slug flow formation risk.
(2) hydrops remover rises to revolve in main pipeline and installs helical flow pipe cyclone, spiral flow in pipes is formed by working the fluid revolving main pipeline, produce gas annular space and centrifugal separating effect, realize gas-liquid first separation, simultaneously, hydrops remover inside, low-lying place is provided with gas-liquid cyclone separator, waveform pipe, drop catcher, make liquid phase carry out secondary and be separated for three times, acting as of waveform pipe makes gas enter liquid plug, thus reduce the average density of liquid plug, weaken the detrimental impact that slug flow brings to device, realize the suppression of slug flow, isolated hydrops is by hydrops lifting pipeline arrival point face, enter on-line pressure sealant storage tank, entrucking transport processing.
(3) by the conducting probe of mounting arrangements in hydrops gathering barrel, ultrasonic liquid level sensor, ultrasound transmitting transducer, ultrasound wave receiving transducer to conductivity, the temperature of hydrops in hydrops gathering barrel, the velocity of propagation of ultrasound wave in hydrops measures, based on the artificial neural network of room sample training formation by experiment, adopt Wireless Data Transmission mode, realize density of corrosion inhibitor on-line monitoring method, for the optimization of sour natural gas collection defeated process corrosion inhibiter adding amount provides foundation.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention middle and upper reaches slug flow on-line monitoring schematic diagram.
Fig. 2 is embodiment of the present invention middle and upper reaches slug flow on-line monitoring system schematic diagram.
Fig. 3 is transmitter module schematic diagram in the embodiment of the present invention.
Fig. 4 is that in the embodiment of the present invention, low-lying place hydrops is got rid of and density of corrosion inhibitor on-Line Monitor Device schematic diagram.
Fig. 5 is helical flow pipe cyclone schematic diagram in the embodiment of the present invention.
Fig. 6 is hydrops gathering barrel partial enlargement structural representation in the embodiment of the present invention.
Fig. 7 is artificial neural network schematic diagram in the embodiment of the present invention.
Fig. 8 is Wireless Data Transmission schematic diagram in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described, better to understand the present invention.
Embodiment
In the present embodiment, Upstream section plug flow on-line monitoring is the safety monitoring means of non-invasive.When in pipeline, liquid flow pattern is slug flow, because the density of liquid plug is large, the quality of unit volume is large, and corresponding pipeline configuration natural frequency f is lower by natural frequency during pipeline than the fluid of other flow patterns.When liquid plug is by monitored area, monitored area fluid density increases rapidly, can obtain fluid plug density by calculating pipeline structural natural frequencies.The natural frequency f through type 1 of pipeline configuration calculates, and can show that natural frequency is the result mass action from above formula.M is the quality of pipeline configuration, and k is stiffness coefficient, the quality m vial road quality of materials of pipeline configuration and the summation of biphase gas and liquid flow quality.Dependence test is carried out at scene, and when being full of hydrops component in pipeline section completely, recording pipeline configuration natural frequency is f
0, hydrops density is ρ
0, when being full of institute's gas transmission body in pipeline section completely, recording pipeline configuration natural frequency is f
1, institute's gas transmission volume density is ρ
1, f be liquid plug by time pipeline configuration natural frequency.The density p of corresponding liquid plug can be drawn by any one in formula 2 and 3.
By installing length and the speed that dissimilar sensor can determine liquid plug in Monitoring Pinpelines region.This system comprises 2 monitored areas, 1 electronic module and 1 computer terminal.In order to ensure accuracy, the length separation of 2 monitored areas is 40 ~ 60m.
Each monitored area comprises 1 transmitter module and 2 receiver modules.There is 1 vibration machine in transmitter module, in receiver module, have 2 piezoelectric acceleration transducers.Vibration machine is for generation of vibration or exciting force and is passed to the vibrating device of pipeline configuration.When piezoelectric acceleration transducer is vibrated, the power that mass adds on the piezoelectric element also changes thereupon, and when the natural frequency of tested vibration frequency far below accelerometer, then the change of power is directly proportional to by measuring acceleration.Produce vibration by vibration machine, analytic liquid plug can determine leading peak and the afterbody of liquid plug by the resonant frequency of monitored area, and then determines slug length.Liquid plug acceleration can be measured by piezoelectric acceleration transducer.By monitoring liquid plug point by the time used of the distance between monitoring section 1 and monitoring section 2, the speed of fluid plug can be calculated in conjunction with liquid plug accekeration.In order to ensure accuracy, before vibration machine and piezoelectric acceleration transducer are installed, must by the pipe insulating layer of corresponding site and anticorrosive coat removing.2 monitored areas are connected with same electronic module, and electronic module has following effect:
(1) control signal is passed to transmitter module;
(2) signal of receiver module is regulated;
(3) data acquisition (A/D conversion);
(4) signal transacting;
(5) by process after signal transmission to computer terminal.
Upstream section plug flow on-line monitoring Functional Design:
Upstream section plug flow on-line monitoring principle as shown in Figure 1, comprises transmitter module A
1and A
4, receiver module A
2, A
3, A
5, A
6, electronic module and PC end.
Transmitter module A
1with receiver module A
2, A
3be installed on monitoring section 1, transmitter module A
4with receiver module A
5, A
6be installed on monitoring section 2.In monitoring section, the air line distance of transmitter module and receiver module is 1m.Monitoring section 1 is all connected with electronic module with receiver module with the transmitter module of monitoring section 2.Signal transmission after electronic module processes the most at last, to computer terminal, calculates the length of liquid plug, speed and density by computer terminal.As seen from Figure 2, the air line distance of monitoring section 1 and monitoring section 2 is 40 ~ 60m, and monitoring section 2 is 300 ~ 700m with the air line distance of low-lying place, downstream pipeline hydrops remover.Before liquid plug arrives, low-lying place hydrops remover has the time of about 2 minutes to make action adjustment, tackles slug flow on the horizon.
As shown in Figure 3, a represents vibration machine to transmitter module, and vibration machine can allow pipeline configuration to produce continuous shaking under controlled frequency.B represents covering of piping.C represents pipeline lining.Vibration machine a is arranged on pipeline lining.The apparatus structure of receiver module is identical with the apparatus structure of transmitter module.
The hydrops eliminating of low-lying place and density of corrosion inhibitor on-Line Monitor Device are as shown in Figure 4, comprise and revolved main pipeline 1, explosion-proof type solenoid valve (2,11), hydrops gathering barrel 3, gas-liquid cyclone separator (4,5), waveform pipe (6,7), drop catcher (8,9), gas lifting pipeline 10, gas injection pipeline 12, throttling valve 13, hydrops surge tank 14, air current spray nozzle 15, hydrops lifting pipeline 16, accumulator tank 17, on-line pressure sealant storage tank 18.
Described revolves main pipeline 1 and is connected successively with hydrops gathering barrel 3 by explosion-proof type solenoid valve 2, described gas-liquid cyclone separator 4 revolves main pipeline 1 with described, hydrops gathering barrel 3 is connected by pipeline, described gas-liquid cyclone separator 4 is connected by pipeline successively with waveform pipe 6, drop catcher 8, and described gas lifting pipeline 10 is by through for the inner wet gas gathering line of drop catcher 8 and gas field; Described gas-liquid cyclone separator 5 revolves main pipeline 1 with described, hydrops gathering barrel 3 is connected by pipeline, described gas-liquid cyclone separator 5, waveform pipe 7, drop catcher 9 is connected successively by pipeline, and described gas lifting pipeline 10 is by through for the inner wet gas gathering line of drop catcher 9 and gas field; Described gas injection pipeline 12 is made up of throttling valve 13, air current spray nozzle 15; Described hydrops gathering barrel 3 is connected successively with explosion-proof type solenoid valve 11, hydrops surge tank 14, and hydrops surge tank 14 is connected with accumulator tank 17 by described hydrops lifting pipeline 16, and described accumulator tank 17 is connected by pipeline with on-line pressure sealant storage tank 18.
Consider application of installation limited space, therefore adopt symmetric design mode to make full use of space, device length and width size is between 1.5 ~ 2m, and mounting arrangements, in the buried rectangle hole of building with reinforced concrete, is convenient to make regular check on and keep in repair.Low-lying place hydrops method for removing functional realiey:
Automatic control system realizes controlling explosion-proof type solenoid valve and throttle valve opening, the correct time at low-lying place is arrived by Upstream section plug flow on-line monitoring system determination liquid plug, the explosion-proof type solenoid valve in hydrops remover is opened when liquid plug is about to arrive low-lying place, carry out hydrops collection, this device is opened at every turn, collect the liquid plug because slug flow produces, original for low-lying place hydrops is got rid of in the lump simultaneously.Rise and revolve several fixing guide vanes that the installation of main pipeline local interior wall has certain laying angle, make fluid form helical flow, be convenient to gas-liquid separation.Rise and revolve main pipeline both sides and tangentially connect 2 branch's hydrops gathering lines, branch's hydrops gathering line is connected with gas-liquid cyclone separator, and gas-liquid cyclone separator is connected with waveform pipe, and waveform pipe is connected with drop catcher.Rise and to revolve in main pipeline a part of liquid due to the centrifugal separating effect that helical flow produces and flow directly into hydrops gathering barrel, the first time realizing hydrops collects, another part takes liquid gas by tangentially entering branch's hydrops gathering line, by gas-liquid cyclone separator, secondary separation is carried out to biphase gas and liquid flow, the second time realizing hydrops is collected, enter waveform pipe again to suppress slug flow further, finally realize third time collection by drop catcher to drop, gas phase enters gas lifting pipeline and returns wet gas gathering line.Hydrops in hydrops surge tank provides power to be lifted to ground by the high-pressure natural gas in gas injection pipeline, enters on-line pressure sealant storage tank, entrucking transport processing.Its concrete steps are:
(1) when liquid plug in upstream arrives low-lying place, explosion-proof type solenoid valve 2 is opened automatically, and now the hydrops at low-lying place and upstream liquid have entered and revolved main pipeline 1, makes gas-liquid form helical flow, promote gas-liquid separation, gas field inner wet gas gathering line throughput rate is 50 ~ 70 × 10
4m
3/ d, defeated pressure are 2 ~ 4MPa, gas liquid ratio is 23000 ~ 35000m
3/ m
3;
(2) spiral gas-liquid two-phase flow revolves main pipeline downwards towards cone flowing along rising, and drop gets rid of to inner-walls of duct, by the collision with wall, finally falls into leakage fluid dram and is separated, and enters hydrops gathering barrel 3; Rotate and lower air-flow arrival cone time, due to the contraction of conical shape, the tangential velocity of air-flow improves constantly; In addition, air motion makes peripheral gas flow pressure raise, low-pressure area is formed like this in cone center part, when a certain position, gas arrival cone bottom, just concentrate to pipeline center, with identical sense of rotation rise revolve main pipeline 1 inside from bottom to top helical flow, finally, the gas upwards making helical flow tangentially enters gas-liquid cyclone separator (4,5);
(3) through rising, to revolve the fluid that main pipeline 1 tangentially enters gas-liquid cyclone separator (4,5) be still biphase gas and liquid flow, it may be liquid holdup, the biphase gas and liquid flow flowed out from gas-liquid cyclone separator (4,5) top enters waveform pipe (6,7) respectively, fluid after being suppressed slug flow by waveform pipe (6,7) is by drop catcher (8,9), further the drop carried secretly in gas is removed, be fed back to the inner wet gas gathering line in gas field through gas lifting pipeline 10; The liquid flowed out from gas-liquid cyclone separator (4,5) bottom enters hydrops gathering barrel 3;
(4) wet gas is flowed out by the inner wet gas gathering line in gas field, through throttling valve 13 step-down process, pressure is down to 0.1 ~ 0.2MPa by 2 ~ 4MPa, enter air current spray nozzle 15, finally discharged by accumulator tank 17 upper opening, enter fuelgas pipeline, fuelgas pipeline and the laying in one ditch of wet gas gathering line;
(5) hydrops in hydrops gathering barrel flows into hydrops surge tank 14 through explosion-proof type solenoid valve 11, there is provided high-pressure natural gas as power by gas injection pipeline 12, carry hydrops and enter accumulator tank 17 via hydrops lifting pipeline 16, hydrops flows into on-line pressure sealant storage tank 18, entrucking transport processing.
Helical flow pipe cyclone as shown in Figure 5.Rise and revolve pipeline section A place, local installation helical flow pipe cyclone B in main pipeline 1, change pipe border flow boundary condition; By arranging several fixing guide vane C with certain laying angle at local pipeline section A inwall, it is 3 ~ 6 that guide vane C installs number, blade and axial angle are 10 ~ 30 °, when fluid is by this pipeline section, not only travel forward vertically, and creating circumferential movement, the resultant motion of the two defines spiral flow in pipes; The diameter of helical flow pipe cyclone B is identical with pipeline diameter, the guide vane C that pipeline section A inside is fixing and tube wall are fixedly linked, for reducing resistance, guide vane leading edge frustrates into obtuse, for avoiding streaming, guide vane trailing edge is processed into wing, several stators install time with etc. arc length or etc. central angle be fixed on tube wall by certain laying angle.
The research of density of corrosion inhibitor on-line monitoring and Functional Design: rock gas gas composition contains H
2s and CO
2, have corrosion risk, and adopt moisture gathering and transportation technology, hydrops and gas-liquid course of conveying formed large amount of complex fluidised form be corrosion create extremely favourable condition.For the etching problem that rock gas moisture conveyance conduit may occur, corresponding corrosion inhibiter need be configured.What current use was more has pyridines corrosion inhibiter, and synthesis corrosion inhibiter needs the primary raw materials such as pyridine, dicyandiamide, carbolineum, benzyl chloride, absolute ethyl alcohol, inevitably containing ethanol component in corrosion inhibiter layoutprocedure.Therefore can indirectly infer that density of corrosion inhibitor is in pipeline situation of change along the line by detecting the component of ethanol in the middle of hydrops.
Fig. 6 is the partial enlarged drawing of hydrops gathering barrel.As seen from the figure, D is hydrops gathering barrel, and E revolves main pipeline, and F is ultrasound transmitting transducer, and I is conducting probe, and G is ultrasound wave receiving transducer, and H is ultrasonic liquid level sensor.Conducting probe I for detecting collected hydrops conductivity being installed in hydrops gathering barrel, in conducting probe I, being integrated with the thermistor for detected temperatures parameter.Ultrasonic liquid level sensor H has ultrasonic transmission/reception function, simultaneously for detecting hydrops liquid level.On hydrops gathering barrel D sidewall, symmetry is provided with ultrasound transmitting transducer F and ultrasound wave receiving transducer G, for acoustic velocity measutement.By on-line monitoring hydrops conductivity, hydrops temperature, the velocity of propagation of ultrasound wave in hydrops, adopt artificial nerve network model, calculate the concentration of alcohol in hydrops, and then calculate density of corrosion inhibitor.
Set up artificial nerve network model, namely set up the feedforward BP neural network that has hidden layer and output layer, as shown in Figure 7.Wherein input layer has 3 neurons, respectively corresponding conductivity, temperature and the velocity of sound.Hidden layer 1 has 7 neurons, and hidden layer 2 has 13 neurons.Output layer has 1 neuron, corresponding density of corrosion inhibitor.Learning method steepest decline BP method, then carries out concentration with the normalized function that matlab carries and judges.
Hydrops Conductivity Calculation formula is:
formula (4)
Wherein K is conductivity, and C is probe coefficient, and I is the electric current passed through in probe, and V is the voltage passed through in probe.
The resistance that temperature is collected by thermistor calculates, and hydrops temperature computation formula is:
R
t=Be
d/tformula (5)
Wherein, t is temperature, and unit is DEG C, R
tfor the resistance value of thermistor during temperature t, B, D are the constant depending on material and structure.
The velocity of sound is detected by ultrasound transmitting transducer and ultrasound wave receiving transducer, and computing formula is:
formula (6)
Wherein, V is the velocity of propagation of ultrasound wave in hydrops, and S is the distance between ultrasound transmitting transducer and ultrasound wave receiving transducer, and Δ t is the time interval between transmitting and receiving.
Artificial neural network training comprises the following steps:
(1) configuring the corrosion inhibitor solution of m kind concentration known in laboratory, wherein randomly drawing 100 kinds for testing to the training result of artificial neural network.
(2) often kind of solution conductivity at a certain temperature and ultrasound wave velocity of propagation is in the solution measured respectively.
(3) arrange the data obtained, form sample training data, as shown in table 1, m kind corrosion inhibiter records conductivity K under temperature T and ultrasound wave velocity of propagation V in the solution respectively.
Table 1
(4) given expectation value B, initial weight W and biased b, input the 100 groups of data randomly drawed and test to the artificial neural network after training, calculate output valve, as shown in table 2.Deviation e between the output of calculating actual value and expectation value export, judges whether to reach density of corrosion inhibitor standard-required.If reach density of corrosion inhibitor standard-required, terminate training, obtain desirable artificial nerve network model.If do not reach density of corrosion inhibitor standard-required, amendment connects weights, then re-training, until reach the density of corrosion inhibitor standard-required preset.
Table 2
Density of corrosion inhibitor online monitoring data is transmitted:
The real-time Transmission of density of corrosion inhibitor data is realized by wireless transport module.Wireless data transfer module attachment wireless-transmission network, obtains network IP, connects IP and the port of remote computer.The IP of remote computer and port are configured in wireless data transfer module by AT setting command, control wireless data transfer module connect remote computer by AT bind command.The data that online acquisition arrives are by data transmitting/receiving equipment and base station communication, by base station, data are sent to wireless data transmission network, control room, station or Central Control Room is reached by wireless data transmission network, be convenient to technician's immediate analysis process data, for the optimization of sour natural gas collection defeated process corrosion inhibiter adding amount provides foundation.
The design of wireless data transfer module particular hardware as shown in Figure 8.
(1) reduced instruction set computer processor can implement high level application program, the wireless network protocol of such as software section;
(2) radio-frequency (RF) transceiver can launch the frequency electromagnetic waves with long-distance transmissions ability, transmits and receives the data of wirelessly launching;
(3) storer is for protecting stored memory device;
(4) reconfigurable hardware is used for performing bitwise operation and data flow operations for some application, and such as use safety protocol algorithm just needs by reconfigurable hardware;
(5) effect of bus arbitration is when equipment multiple in system applies for the right to use to bus simultaneously, for avoiding producing bus collision, the applicant taking bus need be needed by bus arbitration mechanism reasonably control and management system, when multiple applicant proposes bus request simultaneously, which is arbitrated with certain priority algorithm and should obtain the right to use to bus.
In addition, wireless transmitter module is fixed in stainless steel box, destroys it to prevent extreme environment.Meanwhile, module own dimensions is little, therefore only consumes few energy.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (6)
1. a pipeline low-lying place hydrops is got rid of and density of corrosion inhibitor on-Line Monitor Device, it is characterized in that: comprised and revolved main pipeline (1), explosion-proof type solenoid valve (2,11), hydrops gathering barrel (3), gas-liquid cyclone separator (4,5), waveform pipe (6,7), drop catcher (8,9), gas lifting pipeline (10), gas injection pipeline (12), throttling valve (13), hydrops surge tank (14), air current spray nozzle (15), hydrops lifting pipeline (16), accumulator tank (17), on-line pressure sealant storage tank (18);
Described revolves main pipeline (1) and is connected successively with hydrops gathering barrel (3) by explosion-proof type solenoid valve (2), described gas-liquid cyclone separator (4) revolves main pipeline (1) with described, hydrops gathering barrel (3) is connected by pipeline, described gas-liquid cyclone separator (4) is connected by pipeline successively with waveform pipe (6), drop catcher (8), and described gas lifting pipeline (10) is by through for the inner wet gas gathering line of drop catcher (8) and gas field; Described gas-liquid cyclone separator (5) revolves main pipeline (1) with described, hydrops gathering barrel (3) is connected by pipeline, described gas-liquid cyclone separator (5), waveform pipe (7), drop catcher (9) is connected successively by pipeline, and described gas lifting pipeline (10) is by through for the inner wet gas gathering line of drop catcher (9) and gas field; Described gas injection pipeline (12) is made up of throttling valve (13), air current spray nozzle (15); Described hydrops gathering barrel (3) is connected successively with explosion-proof type solenoid valve (11), hydrops surge tank (14), hydrops surge tank (14) is connected with accumulator tank (17) by described hydrops lifting pipeline (16), and described accumulator tank (17) is connected by pipeline with on-line pressure sealant storage tank (18).
2. pipeline according to claim 1 low-lying place hydrops is got rid of and density of corrosion inhibitor on-Line Monitor Device, it is characterized in that: the low-lying place hydrops that said apparatus adopts is got rid of and density of corrosion inhibitor on-line monitoring method, and its concrete steps are:
(1) when liquid plug in upstream arrives low-lying place, explosion-proof type solenoid valve (2) is opened automatically, now the hydrops at low-lying place and upstream liquid have entered and have revolved main pipeline (1), gas-liquid two-phase is made to form helical flow, promote gas-liquid separation, gas field inner wet gas gathering line throughput rate is 50 ~ 70 × 10
4m
3/ d, defeated pressure are 2 ~ 4MPa, gas liquid ratio is 23000 ~ 35000m
3/ m
3;
(2) spiral gas-liquid two-phase flow revolves main pipeline downwards towards cone flowing along rising, and drop gets rid of to inner-walls of duct, by the collision with wall, finally falls into leakage fluid dram and is separated, and enters hydrops gathering barrel (3); Rotate and lower air-flow arrival cone time, due to the contraction of conical shape, the tangential velocity of air-flow improves constantly, air motion makes peripheral gas flow pressure raise, and forms low-pressure area like this in cone center part, when a certain position, gas arrival cone bottom, just concentrate to pipeline center, with identical sense of rotation rise revolve main pipeline (1) inside from bottom to top helical flow, finally, the gas upwards making helical flow tangentially enters gas-liquid cyclone separator (4,5);
(3) through rising, to revolve the fluid that main pipeline (1) tangentially enters gas-liquid cyclone separator (4,5) be still biphase gas and liquid flow, it may be liquid holdup, the biphase gas and liquid flow flowed out from gas-liquid cyclone separator (4,5) top enters waveform pipe (6,7) respectively, fluid after being suppressed slug flow by waveform pipe (6,7) is by drop catcher (8,9), further the drop carried secretly in gas is removed, be fed back to the inner wet gas gathering line in gas field through gas lifting pipeline (10); The liquid flowed out from gas-liquid cyclone separator (4,5) bottom enters hydrops gathering barrel (3);
(4) wet gas is flowed out by the inner wet gas gathering line in gas field, through throttling valve (13) step-down process, pressure is down to 0.1 ~ 0.2MPa by 2 ~ 4MPa, enter air current spray nozzle (15), finally discharged by accumulator tank (17) upper opening, enter fuelgas pipeline, fuelgas pipeline and the laying in one ditch of wet gas gathering line;
(5) hydrops in hydrops gathering barrel flows into hydrops surge tank (14) through explosion-proof type solenoid valve (11), there is provided high-pressure natural gas as power by step (4), carry hydrops and enter accumulator tank (17) via hydrops lifting pipeline (16), hydrops flows into on-line pressure sealant storage tank (18), entrucking transport processing.
3. pipeline according to claim 1 low-lying place hydrops is got rid of and density of corrosion inhibitor on-Line Monitor Device, it is characterized in that: helical flow pipe cyclone designs: rise and revolve pipeline section A place, local installation helical flow pipe cyclone B in main pipeline (1), change pipe border flow boundary condition; By arranging several fixing guide vane C with certain laying angle at local pipeline section A inwall, it is 3 ~ 6 that guide vane C installs number, blade and axial angle are 10 ~ 30 °, when fluid is by this pipeline section, not only move downward vertically, and creating circumferential movement, the resultant motion of the two defines spiral flow in pipes; The diameter of helical flow pipe cyclone B with work that to revolve main pipeline (1) diameter identical, the guide vane C that pipeline section A inside is fixing and tube wall are fixedly linked, for reducing resistance, guide vane leading edge frustrates into obtuse, for avoiding streaming, guide vane trailing edge is processed into wing, several stators install time with etc. arc length or etc. central angle be fixed on tube wall by certain laying angle.
4. pipeline according to claim 1 low-lying place hydrops is got rid of and density of corrosion inhibitor on-Line Monitor Device, it is characterized in that: the research of density of corrosion inhibitor on-line monitoring and Functional Design: the conducting probe I for detecting collected hydrops conductivity being installed in hydrops gathering barrel (3), in conducting probe I, being integrated with the thermistor for detected temperatures parameter; Ultrasonic liquid level sensor H has ultrasonic transmission/reception function, simultaneously for detecting hydrops liquid level; On hydrops gathering barrel D sidewall, symmetry is provided with ultrasound transmitting transducer F and ultrasound wave receiving transducer G, for acoustic velocity measutement; By on-line monitoring hydrops conductivity, hydrops temperature, the velocity of propagation of ultrasound wave in hydrops, adopt artificial nerve network model, calculate the concentration of alcohol in hydrops, and then calculate density of corrosion inhibitor.
5. pipeline according to claim 1 low-lying place hydrops is got rid of and density of corrosion inhibitor on-Line Monitor Device, it is characterized in that: artificial neural network training comprises the following steps:
(1) configuring the corrosion inhibitor solution of m kind concentration known in laboratory, wherein randomly drawing 100 kinds for testing to the training result of artificial neural network;
(2) often kind of solution conductivity at a certain temperature and ultrasound wave velocity of propagation is in the solution measured respectively;
(3) arrange the data obtained, form sample training data, m kind corrosion inhibitor solution records conductivity K under temperature T and ultrasound wave velocity of propagation V in the solution respectively;
(4) given expectation value B, initial weight W and biased b, input the 100 groups of data randomly drawed and test to the artificial neural network after training, calculate output valve; Deviation e between the output of calculating actual value and expectation value export, judges whether to reach density of corrosion inhibitor standard-required; If reach density of corrosion inhibitor standard-required, terminate training, obtain desirable artificial nerve network model; If do not reach density of corrosion inhibitor standard-required, amendment connects weights, then re-training, until reach the density of corrosion inhibitor standard-required preset.
6. pipeline according to claim 1 low-lying place hydrops is got rid of and density of corrosion inhibitor on-Line Monitor Device, it is characterized in that: density of corrosion inhibitor online monitoring data is transmitted: the real-time Transmission being realized density of corrosion inhibitor data by wireless transport module; Wireless data transfer module attachment wireless-transmission network, obtains network IP, connects IP and the port of remote computer; The IP of remote computer and port are configured in wireless data transfer module by AT setting command, control wireless data transfer module connect remote computer by AT bind command; The data that online acquisition arrives are by data transmitting/receiving equipment and base station communication, by base station, data are sent to wireless data transmission network, control room, station or Central Control Room is reached by wireless data transmission network, be convenient to technician's immediate analysis process data, for the optimization of acid gas field wet gas collection defeated process corrosion inhibiter adding amount provides foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510386095.XA CN104950859B (en) | 2015-06-30 | 2015-06-30 | A kind of low-lying place's hydrops of pipeline is excluded and density of corrosion inhibitor on-Line Monitor Device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510386095.XA CN104950859B (en) | 2015-06-30 | 2015-06-30 | A kind of low-lying place's hydrops of pipeline is excluded and density of corrosion inhibitor on-Line Monitor Device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104950859A true CN104950859A (en) | 2015-09-30 |
| CN104950859B CN104950859B (en) | 2017-09-29 |
Family
ID=54165580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510386095.XA Expired - Fee Related CN104950859B (en) | 2015-06-30 | 2015-06-30 | A kind of low-lying place's hydrops of pipeline is excluded and density of corrosion inhibitor on-Line Monitor Device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104950859B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322119A (en) * | 2016-09-14 | 2017-01-11 | 西南石油大学 | Accumulated fluid drainage device and control method of gas field gathering and transporting system |
| CN107806847A (en) * | 2017-10-26 | 2018-03-16 | 西南石油大学 | A kind of pre- film thickness test device of corrosion inhibiter and method |
| CN108181941A (en) * | 2018-01-03 | 2018-06-19 | 中国石油大学(华东) | A kind of long distance gas pipeline hydrops removes collection device and control method automatically |
| GB2572547A (en) * | 2018-03-27 | 2019-10-09 | Hevasure Ltd | Monitoring inhibitor levels in a closed water system |
| CN111335887A (en) * | 2020-02-24 | 2020-06-26 | 华北理工大学 | Gas well effusion prediction method based on convolutional neural network |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916482A (en) * | 2006-08-30 | 2007-02-21 | 姬文超 | Safety early warning system for monitoring corrosion, leakage of pipeline on active service, and control method |
| CN201170443Y (en) * | 2008-03-19 | 2008-12-24 | 中国石油天然气股份有限公司 | Auxiliary device for on-line monitoring corrosion of heavy pressure pipeline |
| CN102305352A (en) * | 2011-05-31 | 2012-01-04 | 西南石油大学 | Online monitoring system for corrosion state of oil and gas pipelines and method thereof |
| CN102305761A (en) * | 2011-08-01 | 2012-01-04 | 西南石油大学 | Acid medium transmission pipeline welded joint and parent metal corrosion simulation testing device and method |
| CN202877044U (en) * | 2012-09-05 | 2013-04-17 | 梁法春 | Corrosion inhibitor film coating device of gathering and transporting pipeline |
| CN202974817U (en) * | 2012-11-09 | 2013-06-05 | 中国石油化工股份有限公司 | Device for monitoring corrosion in pipeline by weight loss method |
| CN103599874A (en) * | 2012-09-05 | 2014-02-26 | 中国石油大学(华东) | Corrosion inhibitor coating device for gathering and transportation pipelines |
| US20140144238A1 (en) * | 2012-11-28 | 2014-05-29 | General Electric Company | Sensor array for pipeline corrosion monitoring |
| US20140202249A1 (en) * | 2013-01-23 | 2014-07-24 | General Electric Company | Sensor positionig with non-dispersive guided waves for pipeline corrosion monitoring |
-
2015
- 2015-06-30 CN CN201510386095.XA patent/CN104950859B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916482A (en) * | 2006-08-30 | 2007-02-21 | 姬文超 | Safety early warning system for monitoring corrosion, leakage of pipeline on active service, and control method |
| CN201170443Y (en) * | 2008-03-19 | 2008-12-24 | 中国石油天然气股份有限公司 | Auxiliary device for on-line monitoring corrosion of heavy pressure pipeline |
| CN102305352A (en) * | 2011-05-31 | 2012-01-04 | 西南石油大学 | Online monitoring system for corrosion state of oil and gas pipelines and method thereof |
| CN102305761A (en) * | 2011-08-01 | 2012-01-04 | 西南石油大学 | Acid medium transmission pipeline welded joint and parent metal corrosion simulation testing device and method |
| CN202877044U (en) * | 2012-09-05 | 2013-04-17 | 梁法春 | Corrosion inhibitor film coating device of gathering and transporting pipeline |
| CN103599874A (en) * | 2012-09-05 | 2014-02-26 | 中国石油大学(华东) | Corrosion inhibitor coating device for gathering and transportation pipelines |
| CN202974817U (en) * | 2012-11-09 | 2013-06-05 | 中国石油化工股份有限公司 | Device for monitoring corrosion in pipeline by weight loss method |
| US20140144238A1 (en) * | 2012-11-28 | 2014-05-29 | General Electric Company | Sensor array for pipeline corrosion monitoring |
| US20140202249A1 (en) * | 2013-01-23 | 2014-07-24 | General Electric Company | Sensor positionig with non-dispersive guided waves for pipeline corrosion monitoring |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322119A (en) * | 2016-09-14 | 2017-01-11 | 西南石油大学 | Accumulated fluid drainage device and control method of gas field gathering and transporting system |
| CN106322119B (en) * | 2016-09-14 | 2018-03-30 | 西南石油大学 | Gas field gathering system hydrops discharger and control method |
| CN107806847A (en) * | 2017-10-26 | 2018-03-16 | 西南石油大学 | A kind of pre- film thickness test device of corrosion inhibiter and method |
| CN108181941A (en) * | 2018-01-03 | 2018-06-19 | 中国石油大学(华东) | A kind of long distance gas pipeline hydrops removes collection device and control method automatically |
| GB2572547A (en) * | 2018-03-27 | 2019-10-09 | Hevasure Ltd | Monitoring inhibitor levels in a closed water system |
| CN111335887A (en) * | 2020-02-24 | 2020-06-26 | 华北理工大学 | Gas well effusion prediction method based on convolutional neural network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104950859B (en) | 2017-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104950859A (en) | Device and method for removing accumulated fluids in low-lying positions of pipeline and monitoring concentration of corrosion inhibitor on line | |
| CN104198674B (en) | Pipeline gas gas hydrate synthesis on-line early warning device and method | |
| CN108291829A (en) | Stratified flow multi-phase flowmeter | |
| CN100451442C (en) | Chaos analysis and micro-processor based conduit pipe micro-leakage diagnosing method and device | |
| CN107843408A (en) | Water jet self-vibration nozzle performance detection means and method based on pipeline fluid signal | |
| CN102066881B (en) | Method and system of detecting liquid in an acoustic flow meter | |
| CN107036770A (en) | The leakage detection and localization method of air cooler fin tube bank | |
| CN108267381A (en) | A kind of gas-liquid-solid multiphase flow erosion, corrosion comprehensive experimental device | |
| CN206220895U (en) | A kind of oil reservoir well logging crawler type cutting sampling device | |
| CN104776971A (en) | Visualization experiment device for liquid and sand carrying of gas flow | |
| CN102606135A (en) | Detecting system for mass and flow of return solid particles in oil drilling shaft and detecting method | |
| CN109063849B (en) | Real-time tracking and grading positioning system and method for in-pipeline detector | |
| CN111351540A (en) | Method and system for detecting mass flow rate of particles in pneumatic conveying process | |
| CN105973351A (en) | Supersonic gas-liquid separator test and experiment system | |
| CN105735971A (en) | Drilling hole depth detection system based on elastic waves and detection method thereof | |
| CN107060729A (en) | A kind of individual well multi-phase flow meter | |
| CN201780141U (en) | Level detection device of dumper funnel and dumper funnel comprising device | |
| CN102032447A (en) | System for monitoring urban gas pipeline in real time and using method thereof | |
| CN105157774A (en) | Pulverized coal flow online measuring device and measuring method | |
| CN102539523A (en) | Near field sound holographic filling tower flooding monitoring method | |
| CN206990812U (en) | A kind of detecting system of U-shaped groundwater supply line clogging failure | |
| CN106596025B (en) | Stability of foundation of fan suspended in road tunnel detection method and system based on impulse response | |
| CN104154159B (en) | Tower vibrationproof cylindrical liquid damper | |
| CN204666329U (en) | A kind of air-flow is taken liquid and is taken sand visual experimental apparatus | |
| CN208012993U (en) | A kind of gas-liquid-solid multiphase flow erosion, corrosion comprehensive experimental device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170929 Termination date: 20210630 |