CN106989942B - A kind of pipe cleaner performance and pigging measure of merit device and method - Google Patents
A kind of pipe cleaner performance and pigging measure of merit device and method Download PDFInfo
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- CN106989942B CN106989942B CN201710282856.6A CN201710282856A CN106989942B CN 106989942 B CN106989942 B CN 106989942B CN 201710282856 A CN201710282856 A CN 201710282856A CN 106989942 B CN106989942 B CN 106989942B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
Abstract
The present invention relates to a kind of pipe cleaner performances and pigging measure of merit device and method comprising pipe cleaning emitting and receiving unit, pipe cleaning emitting and receiving unit include pipe cleaning emitting unit and pipe cleaner receiving unit；Air inlet is supplied through gas and is connect with metering units with pipe cleaning emitting unit arrival end, and pipe cleaning emitting unit outlet end is connect through pigging operating measurement unit with pipe cleaner receiving unit；Terminal hydrops receiving unit is also connected with positioned at pigging operating measurement cell end；Gas supply and metering units include air compressor, air inlet is connect with air compressor inlet, air compressor outlet is connect through the first valve, surge tank, the second valve with air filter entrance, and air filter outlet is connect through third valve with gas flowmeter entrance；Gas flowmeter outlet is connect through the 4th valve with pipe cleaning emitting with receiving unit.The present invention can accurately test the migration process of the speed of service variation of pipe cleaner, the size of pigging slug amount and pigging hydrops.
Description
Technical field
The present invention relates to a kind of oil-gas gathering and transportation system Multiphase Flow technical field, especially with regard to a kind of pipe cleaner performance with
Pigging measure of merit device and method.
Background technique
The longtime running of natural gas line can be such that circulation area of pipeline reduces, energy loss in the poly- condensed liquid of pipeline inner product
Increase, greatly reduce the defeated efficiency of pipe, is also possible to generate Hydrate Plugging pipeline under given conditions.Generally use regular pigging
Method solve condensed liquid accumulation problems.
Traditional pipe cleaner, which is sealed pipeline by leather cup or sphere, increases back pressure, by front and back pressure difference push its
Movement carries out pigging operation in pipeline.Appendix gas flow is big in actual production, flow velocity is fast.Since front and back is closed, tradition is clear
Pipe device speed and air velocity are substantially suitable, serious blowby occur so as to cause pipe cleaner upstream and downstream, pigging efficiency reduces, liquid
It cannot be completely removed.Meanwhile the pipe cleaner of high-speed cruising drives mechanical admixture and inner wall of the pipe to generate strong friction, destroys
Pipeline coatings shorten pipeline life.Furthermore the high-speed cruising of pipe cleaner can generate huge momentum, elbow, instrument to pipeline
Table, ball collecting chamber etc. generate huge impact failure, it is even more important that due to pipe cleaner excessive velocities, big quantity of fluid are caused to exist
Pipe cleaner accumulated downstream, when pipe cleaner incoming terminal, the pigging slug amount of accumulation is often beyond downstream slug catcher
Processing capacity affects the safe and stable operation of downstream treatment systems to cause the production accidents such as trap overflow.
Currently, jet flow tube cleaner is mostly used to carry out pigging operation both at home and abroad, with solve traditional pipe cleaner pigging excessive velocities,
A series of production safety problems of the excessive bring of pigging slug amount.Jet flow tube cleaner is pressed before and after reducing pipe cleaner by by-pass prot
Difference reduces pipe cleaner speed to substantially reduce pigging slug amount and guarantees the safe and stable operation of downstream treatment systems.For
Certain sealing structure, the bypass rate of pipe cleaner are to influence the principal element of jet stream pigging effect.When bypass rate is zero, as
Traditional pipe cleaner, bypass rate is too low, then drives pressure difference excessive, keeps pipe cleaner speed and pigging slug amount excessive, safety is not achieved
The purpose of pigging, bypass rate is excessively high, and driving pressure difference is too low, leads to pipe cleaner blocking, causes production accident.Therefore, it is penetrated to improve
The pigging efficiency of pipe cleaner is flowed, while guaranteeing the safe and stable operation of pigging operation and upstream device, bypass rate need to be carried out excellent
The coupling mechanism between bypass gases and jet flow tube cleaner downstream hydrops migration rule is deeply probed into choosing, and whether there is or not bypass for research
And under different sealing structure pigging effect difference, however not yet occur at present corresponding pigging bypass select it is excellent with pigging hydrops
Test device and method, so that the test of pipe cleaner performance Yu pigging effect can not be carried out.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of pipe cleaner performance and pigging measure of merit device, the dress
Setting can be for different operating condition (tolerance and hydrops amount) condition, and (bypass rate and leather cup are close for different pipe cleaner structural parameters
Seal structure) evaluation pipe cleaner performance and pigging effect, variation, pigging hydrops migration rule including the pipe cleaner speed of service and
The size of terminal pigging slug amount, so that it is preferred that the bypass rate of pipe cleaner, solves pipe cleaner by-pass prot size and pigging in production
The suitability problem of device sealing structure, the optimization design for pipe cleaner structure provide reference frame.
It is a further object of the present invention to provide pipe cleaner performance and pigging effect testing method, this method is steady with pipe cleaner
The pigging speed and pigging under different bypass rates can be obtained as preferred performance indicator is bypassed in the speed of service and pigging slug amount
The changing rule of slug amount, the pipe cleaner speed of service under accurate evaluation different pipe cleaner structural parameters and production run parameter
With pigging slug amount, to evaluate pipe cleaner performance and pigging effect, while pigging hydrops migration process and pigging can also be obtained
The internal relation of device performance.
To achieve the above object, the present invention takes following technical scheme: a kind of pipe cleaner performance and pigging measure of merit fill
It sets, it is characterised in that: the device includes that air inlet, gas supply and metering units, pipe cleaning emitting and receiving unit, pigging are transported
Row measuring unit and terminal hydrops receiving unit, the pipe cleaning emitting and receiving unit include pipe cleaning emitting unit and pigging
Device receiving unit；The air inlet is supplied with the gas and is connect with metering units arrival end, and the gas supply and metering are single
First outlet end is connect with the pipe cleaning emitting unit arrival end, and pipe cleaning emitting unit outlet end is run through the pigging
Measuring unit is connect with the pipe cleaner receiving unit；The terminal product is also connected with positioned at the pigging operating measurement cell end
Liquid receiving unit；The gas supply and metering units include air compressor, the first valve, surge tank, the second valve, air
Filter, third valve, gas flowmeter and the 4th valve；The air inlet is connect with the air compressor inlet, described
Air compressor outlet is connect through first valve with the surge tank entrance；The surge tank outlet is through second valve
It is connect with the air filter entrance, the air filter outlet is through the third valve and the gas flowmeter entrance
Connection；The gas flowmeter outlet is connect through the 4th valve with the pipe cleaning emitting with receiving unit.
Preferably, in the pipe cleaning emitting and receiving unit pipe cleaning emitting unit include service cylinder, differential pressure pick-up,
Exhaust outlet, the 5th valve and the 6th valve；The pipe cleaner receiving unit includes the 7th valve, ball collecting chamber and tap hole；It is described
Service cylinder entrance is supplied with the gas and is connect with the 4th valve in metering units, and the differential pressure pick-up and the service cylinder
Parallel connection is located at the service cylinder exit and connect through the 6th valve with the pigging operating measurement unit arrival end；It is located at
It is also parallel with a pipeline between 6th valve and service cylinder outlet, which is the exhaust outlet, and at this
The 5th valve is provided on pipeline；Pigging operating measurement outlet end connects through the 7th valve and the ball collecting chamber
It connects, is additionally provided with the tap hole positioned at the ball collecting chamber bottom.
Preferably, the 5th valve and the 6th valve are that two opening and closing mechanism are opposite and the electrically operated valve of interlocked control.
Preferably, the service cylinder is eccentric reducer structure, and the ball collecting chamber is concentric reducer's structure.
Preferably, the pigging operating measurement unit include first pressure sensor, liquid injection port, second pressure sensor,
Third pressure sensor, the 4th pressure sensor, the 5th pressure sensor, the 6th pressure sensor, the 7th pressure sensor,
Eight pressure sensors, the first infrared diode, the second infrared diode, third infrared diode, the first video camera, the second camera shooting
Machine, third video camera and transparent organic glass pipe；The transparent organic glass tube inlet is connect with the pipe cleaning emitting unit,
The transparent organic glass pipe outlet is connect with the pipe cleaner receiving unit；On the transparent organic glass pipe, from entering
Mouthful the first pressure sensor, liquid injection port, second pressure sensor, third pressure sensor, the are disposed with to outlet
Four pressure sensors, the 5th pressure sensor, the 6th pressure sensor, the 7th pressure sensor and the 8th pressure sensor, institute
Have and transports to computer data acquisition system outside pressure sensor acquisition signal；The second pressure sensor and third pressure sensing
Device partners pressure measurement group, and the 4th pressure sensor and the 5th pressure sensor partner pressure measurement group, institute
It states the 6th pressure sensor and the 7th pressure sensor partners pressure measurement group；The first infrared diode and second red
Outer diode is mounted on transparent organic glass pipe side, and partner infrared tube, and the voltage signal acquired carries out
Comparison, for calculating the speed and length of pigging slug；The third infrared diode is mounted on the transparent organic glass pipe
The voltage signal of measurement is used to judge the flow pattern of hydrops by top and bottom；It is transported to outside the signal of all infrared diode acquisitions
Computer data acquisition system；First video camera, the second video camera and third video camera, which are installed in parallel in, described transparent to be had
Machine glass tube side.
Preferably, transparent organic glass pipe outer wall face is labeled with the scale of fluid injection height for identification.
Preferably, the 8th valve of terminal hydrops receiving unit, the 9th valve, liquidometer, reception container and bracket；Position
In the transparent organic glass pipe end of the pigging operating measurement unit, two have been arranged in parallel on the transparent organic glass pipe
A branch line is respectively arranged with the 8th valve and the 9th valve, two branched pipes on each branch line
Road is connected to the reception container after main pipe rail collects；It is provided with the liquidometer above the reception container, it is described
Liquidometer is installed on the bracket, and the bracket is located at the reception container side；It is transported to outside the liquidometer acquisition signal
Computer data acquisition system.
Preferably, the spacing between two branch lines is greater than a pipe cleaner length.
Preferably, separation baffles built in the reception container.
A kind of pipe cleaner performance based on above-mentioned apparatus and pigging effect testing method, it is characterised in that including following step
It is rapid: 1) Selection experiment pipe cleaner, the selection including pipe cleaner outer seal structure and bypass rate；Pipe cleaner is placed in service cylinder
It is interior, fill in concentric reducer part less than normal；2) the 5th valve, the 8th valve and the 9th valve are closed, the 6th valve and the 7th valve are opened
Door opens differential pressure pick-up and prepares record switch DP；Air compressor, the first valve, the second valve and third valve are opened,
The aperture of the 4th valve is adjusted to tolerance is preset, the logical ball experiment of switch DP is carried out, takes out pipe cleaner after the completion, close
Third valve and air compressor；3) after obtaining switch DP, the numerical value of switch DP is recorded；4) the 5th valve, the 8th are opened
Valve and the 9th valve close the 6th valve and the 7th valve, inject liquid into pipeline by liquid injection port to the liquid studied
Amount；5) by pipe cleaner reappose in service cylinder in, open with measuring instrumentss first pressure sensor, second pressure sensor,
Third pressure sensor, the 4th pressure sensor, the 5th pressure sensor, the 6th pressure sensor, the 7th pressure sensor,
Eight pressure sensors, the first infrared diode, the second infrared diode, third infrared diode and the data of liquidometer connection
Acquisition system opens simultaneously the camera function of the first video camera, the second video camera, third video camera, for recording pigging process
Pressure change along the line, velocity variations, the variation of hydrops migration process, terminal pigging slug amount；6) open air compressor and
Third valve observes the numerical value of differential pressure pick-up, when differential pressure pickup numerical value reaches the switch DP in step 3), instantaneously cuts
The opening and closing for changing the 5th valve and the 6th valve closes the 5th valve, and the 6th valve is opened, and pipe cleaner is under gas pressure driving
Into measuring section；7) when pipe cleaner reaches the front end of the 7th valve, stop data acquisition, close camera system；Close the 8th
Valve and the 9th valve open the 7th valve, and pipe cleaner is pushed into ball collecting chamber using gas-powered power, is collected from tap hole
Residual liquid, for evaluating pigging efficiency；8) air compressor is closed, after no pressure in pipe, takes out pipe cleaner；9) pass through control
Variable processed changes hydrops amount, tolerance in pipeline one by one, and the bypass rate and sealing structure of pipe cleaner repeat step 1)~8),
To the pipe cleaner performance and pigging effect under test and evaluation difference operating parameter and pipe cleaner structural parameters.
The invention adopts the above technical scheme, which has the following advantages: 1, analog natural gas condensate of the present invention
Pigging process in pipeline under various working is not, it can be achieved that different bypass rates, have under sealing structure the pipe cleaner speed of service and clear
The measurement of pipeline section plug amount and the measurement of pigging hydrops migration process, so that the test of pipe cleaner performance and pigging effect is completed,
It realizes the optimization design to pipe cleaner structure, guarantees the safe and highly efficient operation of practical pigging operation and downsteam processing facilities.2, originally
The process of invention pilot system is simple, compact-sized, easy to operate；The adjusting with the 4th valve of measurement unit is supplied by gas circuit,
The pigging operations under different tolerance can be achieved.3, the present invention, can be quasi- by the scale in liquid injection port and transparent organic glass pipe
Really evaluate influence of the different hydrops amounts to pigging effect.4, the present invention can be obtained accurately by camera system and photo processing technique
It obtains the pigging speed of service in measuring section to change with time, to obtain the fluctuation velocity variation and bypass rate, hydrops of pipe cleaner
Relationship between amount, tolerance.5, the present invention by infrared tube technology can accurate recording pipe cleaner downstream hydrops variations in flow patterns and
The characteristic parameter of pigging slug, including inflating effect, the feature of Slug velocities, slug length.6, the product that the present invention passes through terminal
Liquid receiving unit can record the accumulative liquid volume discharge of pigging hydrops, to obtain pigging slug amount and operating parameter in real time
Relationship between pipe cleaner structural parameters.7, the present invention interlocking control opposite by the opening and closing mechanism of the 5th valve and the 6th valve
Mechanism processed, it can be ensured that the interior hydrops of pipe setting in motion with the arrival of jet flow tube cleaner, to accurately measure pigging slug amount.8,
Data of the present invention acquisition uses wholly computer controlled, high degree of automation, can accurate evaluation pipe cleaner performance and pigging effect.
In conclusion the present invention can apply in oil-gas gathering and transportation system Multiphase Flow technical field extensively.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is pigging operating measurement cellular construction schematic diagram of the invention.
Specific embodiment
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1 and Figure 2, the present invention provides a kind of pipe cleaner performance and pigging measure of merit device comprising air inlet
1, gas supply and metering units, pipe cleaning emitting and receiving unit, pigging operating measurement unit and terminal hydrops receiving unit；
Pipe cleaning emitting and receiving unit include pipe cleaning emitting unit and pipe cleaner receiving unit.Air inlet 1 and gas supply and meter
The connection of unit arrival end is measured, gas supply is connect with metering units outlet end with pipe cleaning emitting unit arrival end, pipe cleaner hair
It penetrates unit outlet end and is connect through pigging operating measurement unit with pipe cleaner receiving unit.Also positioned at pigging operating measurement cell end
It is connect with terminal hydrops receiving unit.
Gas supply and metering units include air compressor 2, the first valve 3, surge tank 4, the second valve 5, air mistake
Filter 6, third valve 7, gas flowmeter 8 and the 4th valve 9.Air inlet 1 is connect with 2 entrance of air compressor, air compression
The outlet of machine 2 is connect through the first valve 3 with 4 entrance of surge tank；The outlet of surge tank 4 connects through the second valve 5 with 6 entrance of air filter
It connects, the outlet of air filter 6 is connect through third valve 7 with 8 entrance of gas flowmeter；Gas flowmeter 8 is exported through the 4th valve 9
It is connect with pipe cleaning emitting with receiving unit.In use, air compressor 2 provides gas source for test device, obtained by surge tank 4
Stable gas source is obtained, provides security protection by the first valve 3 and the second valve 5 for the maintenance of compressor 2 and surge tank 4, is led to
The impurity that air filter 6 eliminates gas is crossed, purified air is obtained, the function of cutting gas source is realized by third valve 7
Can, computer data acquisition system is transported to outside the acquisition signal of gas flowmeter 8, by the opening size for adjusting the 4th valve 9
The flow parameter of regulating gas.
Pipe cleaning emitting unit includes service cylinder 10, differential pressure pick-up 11, exhaust outlet in pipe cleaning emitting and receiving unit
12, the 5th valve 13 and the 6th valve 14；Pipe cleaner receiving unit includes the 7th valve 33, ball collecting chamber 34 and tap hole 35.Hair
10 entrance of ball cylinder is supplied with gas and is connect with the 4th valve 9 in metering units, and differential pressure pick-up 11 is in parallel with service cylinder 10, position
It is connect in service the 6th valve 14 of 10 exit of cylinder with pigging operating measurement unit arrival end；Positioned at the 6th valve 14 and service
Cylinder is also parallel with a pipeline between 10 outlet, which is exhaust outlet 12, and the 5th valve 13 is provided on the pipeline.
The 7th valve 33 of pigging operating measurement outlet end is connect with ball collecting chamber 34, is additionally provided with tap hole positioned at 34 bottom of ball collecting chamber
35, remaining pigging liquid measure is released by tap hole 35, to evaluate pigging efficiency.
In above-described embodiment, the 5th valve 13 and the 6th valve 14 be that two opening and closing mechanism are opposite and interlocked control it is electronic
Valve completes 13 He of the 5th valve when pipe cleaner switch DP, which reaches differential pressure pick-up 11, monitors the switch DP of pipe cleaner
The switching of 6th valve 14 avoids in pipe hydrops from being carried along into end with bypass gases in the accumulation of pressure stage that pipe cleaner starts
End, it is ensured that pigging hydrops with pipe cleaner arrival setting in motion.
In the various embodiments described above, service cylinder 10 is eccentric reducer structure, and ball collecting chamber 34 is concentric reducer's structure, so as to
In the transmitting and reception of pipe cleaner.
As shown in Fig. 2, pigging operating measurement unit includes first pressure sensor 15, liquid injection port 16, second pressure sensing
Device 17, third pressure sensor 18, the 4th pressure sensor 19, the 5th pressure sensor 20, the 6th pressure sensor the 21, the 7th
Pressure sensor 22, the 8th pressure sensor 23, the first infrared diode 24, the second infrared diode 25, infrared two pole of third
Pipe 26, the first video camera 27, the second video camera 28, third video camera 29 and transparent organic glass pipe 32.Transparent organic glass pipe
32 entrances are connect with the 6th valve 14, and the outlet of transparent organic glass pipe 32 is connect with the 7th valve 33.Positioned at transparent organic glass
On pipe 32, first pressure sensor 15, liquid injection port 16, second pressure sensor 17, third are disposed with from entrance to outlet
Pressure sensor 18, the 4th pressure sensor 19, the 5th pressure sensor 20, the 6th pressure sensor 21, the 7th pressure sensing
Device 22 and the 8th pressure sensor 23, all pressure sensor acquisition signals transport to computer data acquisition system outside.Wherein,
Two pressure sensors 17 and third pressure sensor 18 partner pressure measurement group, the 4th pressure sensor 19 and the 5th pressure
Sensor 20 partners pressure measurement group, and the 6th pressure sensor 21 and the 7th pressure sensor 22 partner pressure measurement
Group, pressure signal when being passed through using pipe cleaner change in pressure change and each pair of pressure measurement group along can measure two
The average speed of pipe cleaner between pressure sensor.By be located at the entrance and exit of the transparent organic glass pipe 32 first
Pressure sensor 15 and the 8th pressure sensor 23, the transformation period of pressure signal when being passed through using pipe cleaner, in conjunction with two sensings
The spacing of device can measure average speed of the pipe cleaner in measuring section.First infrared diode 24 and the second infrared diode 25
It is mounted on 32 side of transparent organic glass pipe, partner infrared tube, and the voltage signal acquired compares, based on
Settle the speed and length of pipeline section plug；Third infrared diode 26 is mounted on 32 top and bottom of transparent organic glass pipe, is located at
Between 5th pressure sensor 20 and the 6th pressure sensor 21, the voltage signal of measurement is used to judge the flow pattern of hydrops；Institute
Computer data acquisition system is transported to outside the signal for having infrared diode to acquire.First video camera 27, the second video camera 28 and
Three video cameras 29 are installed in parallel in 32 side of transparent organic glass pipe, to record the motion state of pipe cleaner and shoot hydrops
Migration process.After the processing of image postmenstruation, the instantaneous velocity that can get pipe cleaner changes with time.Transparent organic glass pipe 32
Outside wall surface is labeled with scale, to identify fluid injection height.
The 8th valve 30 of terminal hydrops receiving unit, liquidometer 36, receives container 37 and bracket 38 at the 9th valve 31.Position
In 32 end of pigging operating measurement cell transparent lucite tube, it is arranged in parallel on transparent organic glass pipe 32 there are two branch
Pipeline is respectively arranged with the 8th valve 30 and the 9th valve 31 on each branch line, and two branch lines collect through main pipe rail
After be connected to receive container 37.Liquidometer 36 is provided with above container 37 positioned at receiving, liquidometer is installed on the bracket 38, bracket
38 are located at reception 37 side of container.Liquidometer 36 acquires and transports to computer data acquisition system outside signal, can continuously record clear
The accumulative liquid volume discharge of pipe hydrops, to obtain pigging slug amount.
In above-described embodiment, the spacing between two branch lines is greater than a pipe cleaner length, passes through two branched pipes
8th valve 30 of road and the 9th valve 31 cooperate with logical liquid effect, it can be ensured that pigging hydrops receives container completely into terminal
37, while the phenomenon that builds the pressure will not be generated in pipe cleaner incoming terminal.
In the various embodiments described above, separation baffles built in container 37 are received, to prevent the gas-liquid mixture of outflow to liquid level
Count the impulsive disturbance of metering process.
Based on above-mentioned apparatus, the present invention also provides a kind of pipe cleaner performances and pigging effect testing method, for testing not
Movement velocity, pigging hydrops migration rule and the pigging slug of pipe cleaner under same working condition, different pipe cleaner structural parameters
The test of pipe cleaner performance and pigging effect is realized in the measurement of amount.Method includes the following steps:
1) Selection experiment pipe cleaner, the selection including pipe cleaner outer seal structure and bypass rate.Pipe cleaner is placed in
It serves a ball in cylinder 10, fills in concentric reducer part less than normal.
2) the 5th valve 13, the 8th valve 30 and the 9th valve 31 are closed, the 6th valve 14 and the 7th valve 33 is opened, opens
It opens differential pressure pick-up 11 and prepares record switch DP.Open air compressor 2, the first valve 3, the second valve 5 and third valve
7, the aperture of the 4th valve 9 is adjusted to presetting tolerance.The logical ball experiment for carrying out switch DP, takes out pipe cleaner after the completion,
Close third valve 7 and air compressor 2.
3) after obtaining switch DP, the numerical value of switch DP is recorded.
4) the 5th valve 13, the 8th valve 30 and the 9th valve 31 are opened, the 6th valve 14 and the 7th valve 33 are closed.It is logical
It crosses liquid injection port 16 and injects liquid into pipeline to the liquid measure studied.
5) pipe cleaner is reapposed in service cylinder 10, opens and is pressed with measuring instrumentss first pressure sensor 15, second
Force snesor 17, third pressure sensor 18, the 4th pressure sensor 19, the 5th pressure sensor 20, the 6th pressure sensor
21, the 7th pressure sensor 22, the 8th pressure sensor 23, the first infrared diode 24, the second infrared diode 25, third are red
The data collection system that outer diode 26 and liquidometer 36 connect opens simultaneously the first video camera 27, the second video camera 28, the
The camera function of three video cameras 29, for recording the pressure change along pigging process, velocity variations, hydrops migration process, end
Hold the variation of pigging slug amount.
6) air compressor 2 and third valve 7 are opened, the numerical value of differential pressure pick-up 11 is observed, when differential pressure pickup numerical value
When reaching the switch DP in step 3), the instantaneous opening and closing for switching the 5th valve 13 and the 6th valve 14 closes the 5th valve 13
It closes, the 6th valve 14 is opened, and pipe cleaner enters measuring section under gas pressure driving.
7) when pipe cleaner reaches the front end of the 7th valve 33, stop data acquisition, close camera system.Close the 8th valve
Door 30 and the 9th valve 31, open the 7th valve 33.Pipe cleaner is pushed into ball collecting chamber 34 using gas-powered power, from tap hole
Residual liquid is collected in 35, for evaluating pigging efficiency.
8) air compressor 2 is closed, after no pressure in pipe, takes out pipe cleaner.
9) change hydrops amount, tolerance in pipeline one by one by controlling variable, the bypass rate and sealing structure of pipe cleaner,
Repeat step 1)~8), thus pipe cleaner performance and pigging under test and evaluation difference operating parameter and pipe cleaner structural parameters
Effect.
10) finally using two parameters of the even running speed of pipe cleaner and pigging slug amount as index, by being set in advance
Under fixed tolerance, hydrops amount and different bypass rates, the even running speed of pipe cleaner and minimum pigging slug amount select the operating condition
The optimal bypass rate of lower pipe cleaner.It may finally realize the preferred of pigging technology technology key parameter bypass rate, obtain pipe cleaner
Performance and pigging effect, while obtaining influence of the bypass gases to hydrops migration rule, disclose the variation of bypass rate and pigging section
Inherent mechanism between plug amount is lower greatly, provides foundation for the optimization design and efficient operation of pigging process.
In conclusion basic principle of the invention is to provide driving force with measurement unit using gas supply for pipe cleaner, clearly
The bypass rate of pipe device and the difference of sealing structure, the driving force for causing to act on pipe cleaner is different from resistance, to make pigging
Device shows different runnability and clear liquid effect in pigging operating measurement portion, is based on photography technology, can test pipe cleaner and exist
The variation of the speed of service in pipeline and the migration process of hydrops are based on differential pressure method, can measure pipe cleaner and pass in two differential pressures
The pressure change in average speed and pipeline between sensor.Flow Regime Ecognition technology based on infrared diode, can test pigging
The variations in flow patterns of hydrops and the speed and length of pigging slug.Level gauging principle based on liquidometer can measure the tired of terminal
Liquid volume discharge is counted, so that it is determined that the size of pigging slug amount can test different operating parameters and pipe cleaner by analysis
The performance of pipe cleaner and pigging effect under structural parameters, obtain the optimization structure of pipe cleaner.
The various embodiments described above are merely to illustrate the present invention, and structure and size, setting position and the shape of each component are all can be with
It is varied, based on the technical solution of the present invention, the improvement and wait that all principles according to the present invention carry out individual part
With transformation, should not exclude except protection scope of the present invention.
Claims (1)
1. a kind of pipe cleaner performance and pigging effect testing method based on pipe cleaner performance and pigging measure of merit device, special
Sign is:
Described device includes air inlet, gas supply and metering units, pipe cleaning emitting and receiving unit, pigging operating measurement list
Member and terminal hydrops receiving unit, the pipe cleaning emitting and receiving unit include that pipe cleaning emitting unit and pipe cleaner receive list
Member；The air inlet is supplied with the gas and is connect with metering units arrival end, the gas supply and metering units outlet end
It is connect with the pipe cleaning emitting unit arrival end, pipe cleaning emitting unit outlet end is through the pigging operating measurement unit
It is connect with the pipe cleaner receiving unit；The terminal hydrops, which is also connected with, positioned at the pigging operating measurement cell end receives list
Member；
Gas supply and metering units include air compressor, the first valve, surge tank, the second valve, air filter,
Third valve, gas flowmeter and the 4th valve；The air inlet is connect with the air compressor inlet, the air compression
Machine outlet is connect through first valve with the surge tank entrance；The surge tank outlet is through second valve and the sky
The connection of air filter entrance, the air filter outlet are connect through the third valve with the gas flowmeter entrance；Institute
Gas flowmeter outlet is stated to connect through the 4th valve with the pipe cleaning emitting with receiving unit；
Pipe cleaning emitting unit includes service cylinder, differential pressure pick-up, exhaust outlet, the 5th in the pipe cleaning emitting and receiving unit
Valve and the 6th valve；The pipe cleaner receiving unit includes the 7th valve, ball collecting chamber and tap hole；The service cylinder entrance with
The gas supply is connect with the 4th valve in metering units, and the differential pressure pick-up is in parallel with the service cylinder, is located at institute
Service cylinder exit is stated to connect through the 6th valve with the pigging operating measurement unit arrival end；Positioned at the 6th valve
It is also parallel with a pipeline between service cylinder outlet, which is the exhaust outlet, and is provided on the pipeline
5th valve；The pigging operating measurement unit outlet end is connect through the 7th valve with the ball collecting chamber, is located at institute
It states ball collecting chamber bottom and is additionally provided with the tap hole；
5th valve and the 6th valve are two and open and close mechanism on the contrary and the electrically operated valve of interlocked control；
The service cylinder is eccentric reducer structure, and the ball collecting chamber is concentric reducer's structure；
The pigging operating measurement unit includes first pressure sensor, liquid injection port, second pressure sensor, third pressure sensing
Device, the 4th pressure sensor, the 5th pressure sensor, the 6th pressure sensor, the 7th pressure sensor, the 8th pressure sensing
Device, the first infrared diode, the second infrared diode, third infrared diode, the first video camera, the second video camera, third are taken the photograph
Camera and transparent organic glass pipe；The transparent organic glass tube inlet is connect with the pipe cleaning emitting unit, described transparent
Lucite tube outlet is connect with the pipe cleaner receiving unit；On the transparent organic glass pipe, from entrance to outlet
The first pressure sensor, liquid injection port, second pressure sensor, third pressure sensor, the 4th pressure is disposed with to pass
Sensor, the 5th pressure sensor, the 6th pressure sensor, the 7th pressure sensor and the 8th pressure sensor, all pressure pass
Computer data acquisition system is transported to outside sensor acquisition signal；The second pressure sensor and third pressure sensor composition one
To pressure measurement group, the 4th pressure sensor and the 5th pressure sensor partner pressure measurement group, the 6th pressure
Force snesor and the 7th pressure sensor partner pressure measurement group；The first infrared diode and the second infrared diode
It is mounted on transparent organic glass pipe side, partner infrared tube, and the voltage signal acquired compares, and is used for
Calculate the speed and length of pigging slug；The third infrared diode is mounted on transparent organic glass tube top portion and bottom
The voltage signal of measurement is used to judge the flow pattern of hydrops by portion；Computer number is transported to outside the signal of all infrared diode acquisitions
According to acquisition system；First video camera, the second video camera and third video camera are installed in parallel in the transparent organic glass pipe
Side；
Transparent organic glass pipe outer wall face is labeled with the scale of fluid injection height for identification；
The terminal hydrops receiving unit includes the 8th valve, the 9th valve, liquidometer, receives container and bracket；Positioned at described
The transparent organic glass pipe end of pigging operating measurement unit is arranged in parallel there are two branch on the transparent organic glass pipe
Pipeline is respectively arranged with the 8th valve and the 9th valve on each branch line, and two branch lines are through total
Pipeline is connected to the reception container after collecting；The liquidometer, the liquidometer are provided with above the reception container
On the bracket, the bracket is located at the reception container side for installation；Computer is transported to outside the liquidometer acquisition signal
Data collection system；
Spacing between two branch lines is greater than a pipe cleaner length；
Separation baffles built in the reception container；
It the described method comprises the following steps:
1) Selection experiment pipe cleaner, the selection including pipe cleaner outer seal structure and bypass rate；Pipe cleaner is placed in service
In cylinder, concentric reducer part less than normal is filled in；
2) the 5th valve, the 8th valve and the 9th valve are closed, the 6th valve and the 7th valve are opened, it is quasi- to open differential pressure pick-up
Note switch DP；Air compressor, the first valve, the second valve and third valve are opened, the aperture of the 4th valve is adjusted
To tolerance is preset, the logical ball experiment of switch DP is carried out, takes out pipe cleaner after the completion, closes third valve and air compression
Machine；
3) after obtaining switch DP, the numerical value of switch DP is recorded；
4) the 5th valve, the 8th valve and the 9th valve are opened, the 6th valve and the 7th valve are closed, by liquid injection port to pipeline
The liquid measure that interior injection liquid is extremely studied；
5) by pipe cleaner reappose in service cylinder in, open with measuring instrumentss first pressure sensor, second pressure sensor,
Third pressure sensor, the 4th pressure sensor, the 5th pressure sensor, the 6th pressure sensor, the 7th pressure sensor,
Eight pressure sensors, the first infrared diode, the second infrared diode, third infrared diode and the data of liquidometer connection
Acquisition system opens simultaneously the camera function of the first video camera, the second video camera, third video camera, for recording pigging process
Pressure change along the line, velocity variations, the variation of hydrops migration process, terminal pigging slug amount；
6) air compressor and third valve are opened, the numerical value of differential pressure pick-up is observed, when differential pressure pickup numerical value reaches step
3) when switch DP in, the instantaneous opening and closing for switching the 5th valve and the 6th valve closes the 5th valve, and the 6th valve is beaten
It opens, pipe cleaner enters measuring section under gas pressure driving；
7) when pipe cleaner reaches the front end of the 7th valve, stop data acquisition, close camera system；Close the 8th valve and
Nine valves open the 7th valve, and pipe cleaner is pushed into ball collecting chamber using gas-powered power, raffinate is collected from tap hole
Amount, for evaluating pigging efficiency；
8) air compressor is closed, after no pressure in pipe, takes out pipe cleaner；
9) change hydrops amount, tolerance in pipeline one by one by controlling variable, the bypass rate and sealing structure of pipe cleaner repeat
Step 1)~8), so that the pipe cleaner performance and pigging under test and evaluation difference operating parameter and pipe cleaner structural parameters are imitated
Fruit.
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| CN108843975A (en) * | 2018-09-12 | 2018-11-20 | 南京法迈特科技发展有限公司 | Detecting device for pipeline blocking and its detection method based on photoelectric sensor |
| CN112742809B (en) * | 2020-12-14 | 2022-02-15 | 北京蓝星清洗有限公司 | Pipe cleaner control tracking system and method |
| CN112765862B (en) * | 2021-01-31 | 2022-10-21 | 西南石油大学 | Method for calculating running parameters of pipe cleaner in natural gas pipeline cleaning process |
| CN113032941A (en) * | 2021-04-28 | 2021-06-25 | 西南石油大学 | Monitoring system and method for natural gas pipeline pigging process |
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