CN106989942A - A kind of wiper performance and pigging measure of merit device and method - Google Patents
A kind of wiper performance and pigging measure of merit device and method Download PDFInfo
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- CN106989942A CN106989942A CN201710282856.6A CN201710282856A CN106989942A CN 106989942 A CN106989942 A CN 106989942A CN 201710282856 A CN201710282856 A CN 201710282856A CN 106989942 A CN106989942 A CN 106989942A
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- pigging
- pressure sensor
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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 wiper performance and pigging measure of merit device and method, it includes pipe cleaning emitting and receiving unit, and pipe cleaning emitting includes pipe cleaning emitting unit and wiper receiving unit with receiving unit；Air inlet is connected through gas supply with metering units with pipe cleaning emitting unit arrival end, and the pipe cleaning emitting unit port of export is connected through pigging operating measurement unit with wiper receiving unit；Terminal hydrops receiving unit is also connected with positioned at pigging operating measurement cell end；Gas is supplied includes air compressor with metering units, air inlet is connected with air compressor inlet, air compressor outlet is connected through the first valve, surge tank, the second valve with air cleaner entrance, and air cleaner outlet is connected through the 3rd valve with gas flowmeter entrance；Gas flowmeter outlet is connected through the 4th valve with pipe cleaning emitting with receiving unit.The present invention can accurately test the migration process of speed of service change, the size of pigging slug amount and the pigging hydrops of wiper.
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 wiper performance with
Pigging measure of merit device and method.
Background technology
The longtime running of natural gas line can make the reduction of pipeline flow area, energy loss in the poly- condensed liquid of pipeline inner product
Increase, greatly reduces 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 wiper carries out sealing by leather cup or spheroid to pipeline raises back pressure, by front and rear pressure difference promote its
Motion carries out pigging operation in pipeline.Appendix gas flow is big in actual production, flow velocity is fast.It is traditional clear due to front and rear closed
Pipe device speed is substantially suitable with air velocity, so as to cause wiper upstream and downstream to occur serious blowby, the reduction of pigging efficiency, liquid
It can not be completely removed.Meanwhile, wiper driving mechanical impurity and the inner-walls of duct of high-speed cruising produce strong friction, destruction
Pipeline coatings, shortening pipeline life.In addition the high-speed cruising of wiper, can produce huge momentum, elbow, instrument to pipeline
Table, ball collecting chamber etc. produce huge impact failure, it is even more important that due to wiper excessive velocities, cause big quantity of fluid to exist
Wiper accumulated downstream, when wiper incoming terminal, the pigging slug amount of accumulation is often beyond downstream slug catcher
Disposal ability, so as to cause the production accidents such as trap overflow, influence is brought on the safe and stable operation of downstream treatment systems.
At present, it is many both at home and abroad to carry out pigging operation using jet flow tube cleaners, with solve traditional wiper pigging excessive velocities,
A series of excessive production safety problems brought of pigging slug amount.Jet flow tube cleaner is by pressure before and after by-pass prot reduction wiper
Difference, reduces wiper speed, so as to substantially reduce pigging slug amount, it is ensured that the safe and stable operation of downstream treatment systems.For
Certain sealing structure, the bypass rate of wiper is to influence the principal element of jet pigging effect.When bypass rate is zero, it is
Traditional wiper, bypass rate is too low, then drives pressure difference excessive, make wiper speed and pigging slug amount excessive, do not reach safety
The purpose of pigging, bypass rate is too high, and driving pressure difference is too low, causes wiper blocking, causes production accident.Therefore, penetrated to improve
The pigging efficiency of wiper is flowed, while ensureing the safe and stable operation of pigging operation and upstream device, bypass rate need to be carried out excellent
Choosing, the coupling mechanism deeply probed between bypass gases and jet flow tube cleaner downstream hydrops migration rule, research whether there is bypass
And under different sealing structure pigging effect difference, but not yet occur corresponding pigging bypass at present and select excellent with pigging hydrops
Test device and method, so that the test of wiper performance and pigging effect can not be carried out.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of wiper performance and pigging measure of merit device, the dress
Different operating condition (tolerance and hydrops amount) conditions can be directed to by putting, and (bypass rate and leather cup are close for different wiper structural parameters
Seal structure) evaluate wiper performance and pigging effect, including the change of the wiper speed of service, pigging hydrops migration rule and
The size of terminal pigging slug amount, so that it is preferred that the bypass rate of wiper, solves wiper by-pass prot size and pigging in production
The adaptation sex chromosome mosaicism of device sealing structure, the optimization design for wiper structure provides reference frame.
It is a further object of the present invention to provide wiper performance and pigging effect testing method, this method is steady with wiper
The speed of service and pigging slug amount can obtain the pigging speed and pigging under different bypass rates as preferred performance indications are bypassed
The wiper speed of service under the changing rule of slug amount, accurate evaluation different wiper structural parameters and production run parameter
With pigging slug amount, so that wiper performance and pigging effect are evaluated, 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 wiper performance is filled with pigging measure of merit
Put, it is characterised in that：The device includes air inlet, gas supply and metering units, pipe cleaning emitting and receiving unit, pigging and transported
Row measuring unit and terminal hydrops receiving unit, the pipe cleaning emitting include pipe cleaning emitting unit and pigging with receiving unit
Device receiving unit；The air inlet is connected with gas supply with metering units arrival end, and the gas supply and metering are single
First port of export is connected with the pipe cleaning emitting unit arrival end, and the pipe cleaning emitting unit port of export is run through the pigging
Measuring unit is connected with the wiper receiving unit；The terminal product is also connected with positioned at the pigging operating measurement cell end
Liquid receiving unit；The gas supply includes air compressor, the first valve, surge tank, the second valve, air with metering units
Filter, the 3rd valve, gas flowmeter and the 4th valve；The air inlet is connected with the air compressor inlet, described
Air compressor outlet is connected through first valve with the surge tank entrance；The surge tank outlet is through second valve
It is connected with the air cleaner entrance, the air cleaner outlet is through the 3rd valve and the gas flowmeter entrance
Connection；The gas flowmeter outlet is connected 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 wiper receiving unit includes the 7th valve, ball collecting chamber and tap hole；It is described
Service cylinder entrance is connected with gas supply with the 4th valve in metering units, and the differential pressure pick-up and the service cylinder
Parallel connection, is connected positioned at the service cylinder exit through the 6th valve with the pigging operating measurement unit arrival end；It is located at
A pipeline is also parallel between 6th valve and the outlet of service cylinder, the line end is the exhaust outlet, and at this
The 5th valve is provided with pipeline；The pigging operating measurement port of export connects through the 7th valve and the ball collecting chamber
Connect, the tap hole is additionally provided with positioned at the ball collecting chamber bottom.
Preferably, the 5th valve and the 6th valve are two and open and close that mechanism are opposite and 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,
3rd 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, the 3rd infrared diode, the first video camera, the second shooting
Machine, the 3rd video camera and transparent organic glass pipe；The transparent organic glass tube inlet is connected with the pipe cleaning emitting unit,
The transparent organic glass pipe outlet is connected with the wiper receiving unit；On the transparent organic glass pipe, from entering
Mouthful the first pressure sensor, liquid injection port, second pressure sensor, the 3rd 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
There is pressure sensor to gather outside signal and transport to computer data acquisition system；The second pressure sensor and the 3rd pressure sensing
Device partners pressure measxurement group, and the 4th pressure sensor and the 5th pressure sensor partner pressure measxurement group, institute
State the 6th pressure sensor and the 7th pressure sensor partners pressure measxurement group；The first infrared diode and second red
Outer diode is arranged on transparent organic glass pipe side, and partner infrared tube, and the voltage signal gathered is carried out
Contrast, speed and length for calculating pigging slug；3rd infrared diode is arranged on the transparent organic glass pipe
Top and bottom, the voltage signal of measurement are used for the flow pattern for judging hydrops；Transported to outside the signal of all infrared diode collections
Computer data acquisition system；First video camera, the second video camera and the 3rd video camera, which are installed in parallel in, described transparent to be had
Machine glass tube side.
Preferably, the transparent organic glass pipe outer wall face is labeled with the scale for recognizing fluid injection height.
Preferably, the valve of terminal hydrops receiving unit the 8th, the 9th valve, liquid level gauge, reception container and support；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
The 8th valve and the 9th valve, two branched pipes are respectively arranged with individual branch line, each branch line
Road is connected to the reception container after collecting through main pipe rail；The liquid level gauge is provided with above the reception container, it is described
Liquid level gauge is installed on the bracket, and the support is located at the reception container side；Transported to outside the liquid level gauge collection signal
Computer data acquisition system.
Preferably, the spacing between two branch lines is more than a wiper length.
Preferably, separation baffles built in the reception container.
A kind of wiper performance based on said apparatus and pigging effect testing method, it is characterised in that including following step
Suddenly：1) Selection experiment wiper, includes the selection of wiper outer seal structure and bypass rate；Wiper 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 is opened
Door, opens differential pressure pick-up and prepares record switch DP；Air compressor, the first valve, the second valve and the 3rd 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, after the completion of take out wiper, close
3rd valve and air compressor；3) obtain after switch DP, record the numerical value of switch DP；4) the 5th valve, the 8th are opened
Valve and the 9th valve, close the 6th valve and the 7th valve, and liquid is injected to the liquid studied into pipeline by liquid injection port
Amount；5) by wiper reappose in service cylinder in, open with measuring instrumentss first pressure sensor, second pressure sensor,
3rd 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, the 3rd infrared diode and the data of liquid level gauge connection
Acquisition system, while the first video camera, the second video camera, the camera function of the 3rd video camera are opened, for recording pigging process
Pressure change along the line, velocity variations, hydrops migration process, the change of terminal pigging slug amount；6) open air compressor and
3rd valve, observe differential pressure pick-up numerical value, when differential pressure pickup numerical value reaches step 3) in switch DP when, instantaneously cut
The opening and closing of the 5th valve and the 6th valve is changed, the 5th valve is closed, the 6th valve is opened, wiper is under gas pressure driving
Into measuring section；7) when wiper 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 wiper is pushed into ball collecting chamber using gas-powered power, are collected from tap hole
Residual liquid, for evaluating pigging efficiency；8) air compressor is closed, after after no pressure in pipe, wiper is taken out；9) control is passed through
Variable processed changes hydrops amount, tolerance in pipeline, the bypass rate and sealing structure of wiper, repeat step 1 one by one)~8),
So as to the different operational factors of test and evaluation and the wiper performance under wiper structural parameters and pigging effect.
The present invention is due to taking above technical scheme, and it has advantages below：1st, the present invention can simulate NGL
Pigging process in pipeline under various working, can be achieved different bypass rates, without the wiper speed of service under sealing structure and clear
The measure of pipeline section plug amount, and pigging hydrops migration process measurement, so as to complete the test of wiper performance and pigging effect,
Realize the optimization design to wiper structure, it is ensured that the safe and highly efficient operation of actual pigging operation and downsteam processing facilities.2nd, originally
The flow of invention pilot system is simple, compact conformation, easy to operate；The regulation with the valve of measurement unit the 4th is supplied by gas circuit,
The pigging operations under different tolerance can be achieved.3rd, the present invention, can be accurate by the scale in liquid injection port and transparent organic glass pipe
Really evaluate influence of the different hydrops amounts to pigging effect.4th, the present invention can be obtained accurately by camera system and photo disposal technology
Obtain the pigging speed of service in measuring section to change with time, so as to obtain fluctuation velocity change and bypass rate, the hydrops of wiper
Relation between amount, tolerance.5th, the present invention by infrared tube technology can accurate recording wiper downstream hydrops variations in flow patterns and
The characteristic parameter of pigging slug, including inflation effect, Slug velocities, the feature of slug length.6th, the product that the present invention passes through terminal
Liquid acceptance division, the accumulative liquid volume discharge of pigging hydrops can be recorded in real time, so as to obtain pigging slug amount and operational factor
Relation between wiper structural parameters.7th, the interlocking control of the keying mechanism of the invention by the 5th valve and the 6th valve conversely
Mechanism processed, it can be ensured that the interior hydrops of pipe setting in motion with the arrival of jet flow tube cleaner, so as to accurately measure pigging slug amount.8、
Data acquisition of the present invention is using wholly computer controlled, and automaticity is high, can accurate evaluation wiper performance and pigging effect.
In summary, the present invention can be applied in oil-gas gathering and transportation system Multiphase Flow technical field extensively.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the pigging operating measurement cellular construction schematic diagram of the present invention.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, the present invention provides a kind of wiper performance and pigging measure of merit device, and it includes air inlet
1st, gas supply and metering units, pipe cleaning emitting and receiving unit, pigging operating measurement unit and terminal hydrops receiving unit；
Pipe cleaning emitting includes pipe cleaning emitting unit and wiper receiving unit with receiving unit.Air inlet 1 is supplied with counting with gas
The connection of unit arrival end is measured, gas supply is connected with the metering units port of export with pipe cleaning emitting unit arrival end, wiper hair
The unit port of export is penetrated to be connected with wiper receiving unit through pigging operating measurement unit.Positioned at pigging operating measurement cell end also
It is connected with terminal hydrops receiving unit.
Gas is supplied includes air compressor 2, the first valve 3, surge tank 4, the second valve 5, air mistake with metering units
Filter 6, the 3rd valve 7, the valve 9 of gas flowmeter 8 and the 4th.Air inlet 1 is connected with the entrance of air compressor 2, air compression
Machine 2 is exported to be connected through the first valve 3 with the entrance of surge tank 4；Surge tank 4 is exported to be connected through the second valve 5 and the entrance of air cleaner 6
Connect, air cleaner 6 is exported to be connected through the 3rd valve 7 with the entrance of gas flowmeter 8；Gas flowmeter 8 is exported through the 4th valve 9
It is connected with pipe cleaning emitting with receiving unit.In use, air compressor 2 provides source of the gas for test device, obtained by surge tank 4
The source of the gas that must stablize, security protection is provided 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 cleaner 6 eliminates gas is crossed, the air after being purified realizes the work(for cutting off source of the gas by the 3rd valve 7
Can, computer data acquisition system is transported to outside the collection signal of gas flowmeter 8, by the aperture size for adjusting the 4th valve 9
Adjust the flow parameter of gas.
Pipe cleaning emitting includes service cylinder 10, differential pressure pick-up 11, exhaust outlet with pipe cleaning emitting unit in receiving unit
12nd, the 5th valve 13 and the 6th valve 14；Wiper receiving unit includes the 7th valve 33, ball collecting chamber 34 and tap hole 35.Hair
Ball 10 entrances of cylinder are connected with gas supply with the 4th valve 9 in metering units, and differential pressure pick-up 11 is in parallel with service cylinder 10, position
In 10 exit of service cylinder the 6th, valve 14 is connected with pigging operating measurement unit arrival end；Positioned at the 6th valve 14 and service
Cylinder 10 is also parallel with a pipeline between outlet, and the line end is exhaust outlet 12, and is provided with the pipeline the 5th valve 13.
The pigging operating measurement port of export is connected through the 7th valve 33 with ball collecting chamber 34, and tap hole is additionally provided with positioned at the bottom of ball collecting chamber 34
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 are that two keying mechanism are opposite and interlocked control electronic
Valve, when wiper switch DP reaches that differential pressure pick-up 11 monitors the switch DP of wiper, completes the He of the 5th valve 13
The switching of 6th valve 14, it is to avoid the accumulation of pressure stage that hydrops starts in wiper in pipe is carried along into end with bypass gases
End, it is ensured that pigging hydrops with wiper 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 wiper.
As shown in Fig. 2 pigging operating measurement unit includes first pressure sensor 15, liquid injection port 16, second pressure sensing
Device 17, the 3rd 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, the 3rd infrared two pole
Pipe 26, the first video camera 27, the second video camera 28, the 3rd video camera 29 and transparent organic glass pipe 32.Transparent organic glass pipe
32 entrances are connected with the 6th valve 14, and the outlet of transparent organic glass pipe 32 is connected with the 7th valve 33.Positioned at transparent organic glass
On pipe 32, first pressure sensor 15, liquid injection port 16, second pressure sensor the 17, the 3rd 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
Computer data acquisition system is transported to outside the pressure sensor 23 of device 22 and the 8th, all pressure sensor collection signals.Wherein,
Two pressure sensors 17 and the 3rd pressure sensor 18 partner pressure measxurement group, the 4th pressure sensor 19 and the 5th pressure
Sensor 20 partners pressure measxurement group, and the 6th pressure sensor 21 and the 7th pressure sensor 22 partner pressure measxurement
Group, using wiper by when pressure signal change it is measurable along pressure change and each pair pressure measxurement group in two
The average speed of wiper between pressure sensor.Pass through first of the entrance and exit positioned at the transparent organic glass pipe 32
The pressure sensor 23 of pressure sensor 15 and the 8th, using wiper by when pressure signal transformation period, with reference to two sensing
The spacing of device, average speed of the measurable wiper in measuring section.The first infrared infrared diode 25 of diode 24 and second
Installed in the side of transparent organic glass pipe 32, partnered infrared tube, and the voltage signal gathered is contrasted, based on
Settle the speed and length of pipeline section plug；3rd infrared diode 26 is arranged on the top and bottom of transparent organic glass pipe 32, is located at
Between 5th pressure sensor 20 and the 6th pressure sensor 21, the voltage signal of measurement is used for the flow pattern for judging hydrops；Institute
Computer data acquisition system is transported to outside the signal for having infrared diode collection.First video camera 27, the second video camera 28 and
Three video cameras 29 are installed in parallel in the side of transparent organic glass pipe 32, to record the motion state of wiper and shoot hydrops
Migration process.After the processing of image postmenstruation, the instantaneous velocity that can obtain wiper changes with time.Transparent organic glass pipe 32
Outside wall surface is labeled with scale, to recognize fluid injection height.
The valve 30 of terminal hydrops receiving unit the 8th, the 9th valve 31, liquid level gauge 36, reception container 37 and support 38.Position
In the end of pigging operating measurement cell transparent lucite tube 32, You Liangge branches are arranged in parallel on transparent organic glass pipe 32
The 8th valve 30 and the 9th valve 31 are respectively arranged with pipeline, each branch line, two branch lines collect through main pipe rail
After be connected to reception container 37.Liquid level gauge 36 is provided with positioned at the top of container 37 is received, liquid level gauge is installed on the bracket 38, support
38 are located at reception container 37 side.Computer data acquisition system is transported to outside the collection signal of liquid level gauge 36, can continuously record clear
The accumulative liquid volume discharge of pipe hydrops, so as to obtain pigging slug amount.
In above-described embodiment, the spacing between two branch lines is more than a wiper length, passes through two branched pipes
The logical liquid effect of the 8th valve 30 and the collaboration of the 9th valve 31 on road, it can be ensured that pigging hydrops receives container completely into terminal
37, while the phenomenon that builds the pressure will not be produced in wiper 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 said apparatus, the present invention also provides a kind of wiper performance and pigging effect testing method, for testing not
Movement velocity, pigging hydrops migration rule and the pigging slug of wiper under same working condition, different wiper structural parameters
The measurement of amount, realizes the test of wiper performance and pigging effect.This method comprises the following steps：
1) Selection experiment wiper, includes the selection of wiper outer seal structure and bypass rate.Wiper is placed in
Serve a ball in cylinder 10, fill 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
Open differential pressure pick-up 11 and prepare record switch DP.Open air compressor 2, the first valve 3, the second valve 5 and the 3rd valve
7, the aperture of the 4th valve 9 is adjusted to presetting tolerance.Carry out switch DP logical ball experiment, after the completion of take out wiper,
Close the 3rd valve 7 and air compressor 2.
3) obtain after switch DP, record the numerical value of switch DP.
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 is closed.It is logical
Cross liquid injection port 16 and liquid is injected into pipeline to the liquid measure studied.
5) wiper is reapposed in service cylinder 10, opens and pressed with measuring instrumentss first pressure sensor 15, second
Force snesor 17, the 3rd pressure sensor 18, the 4th pressure sensor 19, the 5th pressure sensor 20, the 6th pressure sensor
21st, the 7th pressure sensor 22, the 8th pressure sensor 23, the first infrared diode 24, the second infrared diode the 25, the 3rd are red
The data collecting system of outer diode 26 and liquid level gauge 36 connection, while opening 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 change of pigging slug amount.
6) valve 7 of air compressor 2 and the 3rd is opened, the numerical value of differential pressure pick-up 11 is observed, when differential pressure pickup numerical value
Reach step 3) in switch DP when, the opening and closing of the 5th valve 13 of instantaneous switching and the 6th valve 14 closes the 5th valve 13
Close, the 6th valve 14 is opened, wiper enters measuring section under gas pressure driving.
7) when wiper reaches the front end of the 7th valve 33, stop data acquisition, close camera system.Close the 8th valve
The valve 31 of door 30 and the 9th, opens the 7th valve 33.Wiper 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 after no pressure in pipe, wiper is taken out.
9) hydrops amount, tolerance in pipeline are changed one by one by controlling variable, the bypass rate and sealing structure of wiper,
Repeat step 1)~8), so that test and evaluation difference operational factor and the wiper performance and pigging under wiper structural parameters
Effect.
10) last two parameters of even running speed and pigging slug amount using wiper is indexs, by being set in advance
Under fixed tolerance, hydrops amount and different bypass rates, the even running speed of wiper and minimum pigging slug amount select the operating mode
The optimal bypass rate of lower wiper.The preferred of pigging technology technology key parameter bypass rate may finally be realized, wiper is drawn
Performance and pigging effect, while obtain influence of the bypass gases to hydrops migration rule, disclose the change of bypass rate and pigging section
Inherent mechanism between under plug amount is big, foundation is provided for the optimization design and Effec-tive Function of pigging process.
In summary, general principle of the invention is to provide driving force using gas supply and measurement unit for wiper, clearly
The bypass rate and the difference of sealing structure of pipe device, the driving force for causing to act on wiper is different from resistance, so that pigging
Device shows different runnability and clear liquid effect in pigging operating measurement portion, based on camera technique, can test wiper and exist
The change of the speed of service in pipeline and the migration process of hydrops, based on differential pressure method, measurable wiper is passed 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 liquid level gauge can measure the tired of terminal
Liquid volume discharge is counted, so that it is determined that the size of pigging slug amount, by analysis, can test different operational factors and wiper
The performance of wiper and pigging effect under structural parameters, obtain the optimization structure of wiper.
The various embodiments described above are merely to illustrate the present invention, and structure and size, set location and the shape of each part are all can be with
It is varied from, on the basis of technical solution of the present invention, all improvement carried out according to the principle of the invention to individual part and waits
With conversion, it should not exclude outside protection scope of the present invention.
Claims (10)
1. a kind of wiper performance and pigging measure of merit device, it is characterised in that：The device include air inlet, gas supply with
Metering units, pipe cleaning emitting and receiving unit, pigging operating measurement unit and terminal hydrops receiving unit, the wiper hair
Penetrate includes pipe cleaning emitting unit and wiper receiving unit with receiving unit；The air inlet is supplied with measuring with the gas
Unit arrival end is connected, and the gas supply is connected with the metering units port of export with the pipe cleaning emitting unit arrival end, institute
The pipe cleaning emitting unit port of export is stated to be connected with the wiper receiving unit through the pigging operating measurement unit；Positioned at described
Pigging operating measurement cell end is also connected with the terminal hydrops receiving unit；
Gas supply and metering units include air compressor, the first valve, surge tank, the second valve, air cleaner,
3rd valve, gas flowmeter and the 4th valve；The air inlet is connected with the air compressor inlet, the air compression
Machine outlet is connected through first valve with the surge tank entrance；The surge tank outlet is through second valve and the sky
Air filter entrance is connected, and the air cleaner outlet is connected through the 3rd valve with the gas flowmeter entrance；Institute
Gas flowmeter outlet is stated to be connected with receiving unit with the pipe cleaning emitting through the 4th valve.
2. a kind of wiper performance as claimed in claim 1 and pigging measure of merit device, it is characterised in that：The wiper
Transmitting includes service cylinder, differential pressure pick-up, exhaust outlet, the 5th valve and the 6th valve with pipe cleaning emitting unit in receiving unit
Door；The wiper receiving unit includes the 7th valve, ball collecting chamber and tap hole；The service cylinder entrance is supplied with the gas
It is connected with the 4th valve in metering units, and the differential pressure pick-up is in parallel with the service cylinder, positioned at the service cylinder outlet
Place is connected through the 6th valve with the pigging operating measurement unit arrival end；Positioned at the 6th valve and the service cylinder
A pipeline is also parallel between outlet, the line end is the exhaust outlet, and is provided with the pipeline the 5th valve；
The pigging operating measurement port of export is connected through the 7th valve with the ball collecting chamber, is also set up positioned at the ball collecting chamber bottom
There is the tap hole.
3. a kind of wiper performance as claimed in claim 2 and pigging measure of merit device, it is characterised in that：5th valve
Door and the 6th valve are two and open and close that mechanism are opposite and electrically operated valve of interlocked control.
4. a kind of wiper performance as claimed in claim 2 and pigging measure of merit device, it is characterised in that：The service cylinder
For eccentric reducer structure, the ball collecting chamber is concentric reducer's structure.
5. a kind of wiper performance as claimed in claim 1 and pigging measure of merit device, it is characterised in that：The pigging fortune
Row measuring unit includes first pressure sensor, liquid injection port, second pressure sensor, the 3rd pressure sensor, the 4th pressure and passed
It is sensor, the 5th pressure sensor, the 6th pressure sensor, the 7th pressure sensor, the 8th pressure sensor, first infrared two grades
Pipe, the second infrared diode, the 3rd infrared diode, the first video camera, the second video camera, the 3rd video camera and transparent organic glass
Glass pipe；The transparent organic glass tube inlet is connected with the pipe cleaning emitting unit, transparent organic glass pipe outlet with
The wiper receiving unit connection；On the transparent organic glass pipe, described is disposed with from entrance to outlet
One pressure sensor, liquid injection port, second pressure sensor, the 3rd pressure sensor, the 4th pressure sensor, the 5th pressure sensing
Transported to outside device, the 6th pressure sensor, the 7th pressure sensor and the 8th pressure sensor, all pressure sensor collection signals
Computer data acquisition system；The second pressure sensor and the 3rd pressure sensor partner pressure measxurement group, described
4th pressure sensor and the 5th pressure sensor partner pressure measxurement group, the 6th pressure sensor and the 7th pressure
Sensor group pressure measxurement group in a pair；The first infrared diode and the second infrared diode are arranged on described transparent organic
Glass tube side, partnered infrared tube, and the voltage signal gathered is contrasted, the speed for calculating pigging slug
And length；3rd infrared diode is arranged at the top and bottom of the transparent organic glass pipe, by the voltage signal of measurement
Flow pattern for judging hydrops；Computer data acquisition system is transported to outside the signal of all infrared diode collections；Described first
Video camera, the second video camera and the 3rd video camera are installed in parallel in the transparent organic glass pipe side.
6. a kind of wiper performance as claimed in claim 5 and pigging measure of merit device, it is characterised in that：Described transparent have
Machine glass tube outside wall surface is labeled with the scale for recognizing fluid injection height.
7. a kind of wiper performance as claimed in claim 1 and pigging measure of merit device, it is characterised in that：The terminal product
The valve of liquid receiving unit the 8th, the 9th valve, liquid level gauge, reception container and support；Positioned at the pigging operating measurement unit
Transparent organic glass pipe end, has been arranged in parallel two branch lines, each branch on the transparent organic glass pipe
The 8th valve and the 9th valve are respectively arranged with pipeline, two branch lines are connected to institute after collecting through main pipe rail
State reception container；The liquid level gauge is provided with above the reception container, the liquid level gauge is installed on the bracket, institute
State support and be located at the reception container side；Computer data acquisition system is transported to outside the liquid level gauge collection signal.
8. a kind of wiper performance as claimed in claim 7 and pigging measure of merit device, it is characterised in that：Divide described in two
Spacing between bye-pass is more than a wiper length.
9. a kind of wiper performance as claimed in claim 7 and pigging measure of merit device, it is characterised in that：Described receive is held
Separation baffles built in device.
10. a kind of wiper performance based on such as claim 1 to 9 described device and pigging effect testing method, its feature exist
In comprising the following steps：
1) Selection experiment wiper, includes the selection of wiper outer seal structure and bypass rate；Wiper 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 is opened, differential pressure pick-up is opened accurate
Note switch DP；Air compressor, the first valve, the second valve and the 3rd valve are opened, the aperture of the 4th valve is adjusted
To tolerance is preset, carry out the logical ball experiment of switch DP, after the completion of take out wiper, close the 3rd valve and air compression
Machine；
3) obtain after switch DP, record the numerical value of switch DP；
4) the 5th valve, the 8th valve and the 9th valve are opened, the 6th valve and the 7th valve is closed, by liquid injection port to pipeline
The liquid measure that interior injection liquid is extremely studied；
5) by wiper reappose in service cylinder in, open with measuring instrumentss first pressure sensor, second pressure sensor,
3rd 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, the 3rd infrared diode and the data of liquid level gauge connection
Acquisition system, while the first video camera, the second video camera, the camera function of the 3rd video camera are opened, for recording pigging process
Pressure change along the line, velocity variations, hydrops migration process, the change of terminal pigging slug amount；
6) air compressor and the 3rd valve are opened, the numerical value of differential pressure pick-up is observed, when differential pressure pickup numerical value reaches step
3) during switch DP in, the opening and closing of the 5th valve of instantaneous switching and the 6th valve closes the 5th valve, and the 6th valve is beaten
Open, wiper enters measuring section under gas pressure driving；
7) when wiper 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 wiper 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 after no pressure in pipe, wiper is taken out；
9) by controlling variable to change hydrops amount, tolerance in pipeline one by one, the bypass rate and sealing structure of wiper are repeated
Step 1)~8), so that test and evaluation difference operational factor is imitated with the wiper performance under wiper structural parameters with pigging
Really.
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