CN104020049B - A kind of pipeline cleaning pressure testing device and method - Google Patents
A kind of pipeline cleaning pressure testing device and method Download PDFInfo
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- CN104020049B CN104020049B CN201410253846.6A CN201410253846A CN104020049B CN 104020049 B CN104020049 B CN 104020049B CN 201410253846 A CN201410253846 A CN 201410253846A CN 104020049 B CN104020049 B CN 104020049B
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Abstract
The invention discloses a kind of pipeline cleaning pressure testing device and method, be used for solving in pipeline cleaning, work pressure test, the workload that pipeline Rewelding cuts and brings is big, efficiency of construction is low, the problem that there is potential safety hazard.The pipeline cleaning pressure testing device of the present invention, including two pressure text heads, two pressure text heads are connected to the two ends of pipeline；Pressure text head includes cylinder, and one end of cylinder is for being connected with pipeline, and the other end of cylinder is equipped with blind plate, is equipped with anti-collision air bag in cylinder at blind plate, and the top of cylinder offers compressed air and the opening of water turnover, and the bottom of cylinder offers sewage draining exit；Wiper it is equipped with in cylinder.Assembly of the invention be arranged on pipeline can complete pigging, calibrate, the operation such as pressure testing, decrease workload, improve security performance simultaneously.
Description
Technical field
The invention belongs to oil and gas pipeline field, be specifically related to a kind of pipeline cleaning pressure testing device and method, for oil and gas pipeline being carried out pigging, pressure testing operation.
Background technology
Oil and gas pipeline, after pipeline welding completes, needs to carry out pigging (removing the residue in pipeline), calibrates, pressure testing, the operation such as is dried, detect whether pipeline meets technological requirement with this.
In the pipeline construction pressure testing stage, the two ends that pig traps is first welded on pipeline section carry out pigging operation, cut by the pig traps at two ends and remove after completing；Again by pressure text head and pipeline welding, carry out water filling pressure testing, after sweeping water, then cut off and remove；Again by pig traps welded and installed, carry out the operation such as pipeline drying, note nitrogen.Especially for the big pipe engineering of Large Diameter Pipeline (such as DN800 DN1000) or more Large Diameter Pipeline carry out pipeline cleaning, calibrate, pressure testing, drying process time, so Rewelding and cutting, not only bringing very hard work amount to scene, there is serious potential safety hazard with welding in repeatedly cutting of pipeline simultaneously.
Wiper belongs to prior art products, as the patent of invention of Application No. 201010700478.2 discloses a kind of self-rotation oil and gas pipeline wiper, including cylinder, it is located at the anti-of barrel front end to ram, the front leather cup also including being respectively arranged on cylinder front and back ends and rear leather cup, front leather cup and rear leather cup are connected at least three support means by the fixed disk of a word and at least three supports wheel, supporting wheel be connected in support means and match therewith, the axis of the axis and natural gas line that support wheel tilts.
The patent of invention of Application No. 201210390139.8 discloses a kind of reducing pipe cleaning device, including main casing, flange, leather cup, electronic location transmitter, the forward and backward two-end part of main casing is fixedly connected with a leather cup respectively, and each leather cup inwall is provided with the most equally distributed diameter changing device.
The utility model patent of Application No. 201120423531.3 discloses a kind of pipe cleaner for long distance pipeline, including central shaft, the straight plate of pigging, the straight sleeve-board of pigging is on center shaft, the straight plate of pigging is disposed behind ties up straight plate, tie up straight plate to be made up of elastomeric material, tying up the outer bending of straight plate and tie up with binding piece, binding piece is through tying up straight plate top.
The patent of invention of Application No. 201210612501.1 discloses a kind of pipeline pressure test head unit, including pressure text head body, pressure text head body is in a tubular form, pressure text head body one end connects ellipse head, pressure text head body and ellipse head connect end socket and strengthen version, pressure text head body is connected and installed with suspension hook, thermometer wrap, wellhead collar clamp valve and needle valve, a needle valve is provided with Pressure gauge, pressure text head body lower part is connected and installed with water discharging valve, is supported by baffle plate and connect baffle plate in ellipse head.
The disclosure of the invention of Application No. 200910136351.4 a kind of pipeline pressure test method and device, it is to place a cylindrical at pipe joint weld to have the O-ring seal of annular groove, the O-ring seal tensioner ring internal stay O-ring seal with point tensioner ring splicing inlaying rim of the mouth, the opening part of two points of tensioner ring splicings is inserted with a variable diameter wedge, position with screw, then, beating variable diameter wedge is hammered into shape with double direction impulse, wedging tensioner ring internal stay O-ring seal, open drain tap, start water-filling, after draining gas, close drain tap, continue water-filling and pressurize, after reaching authorized pressure value, close inlet valve, it is qualified that the confining pressure time reaches predetermined value i.e. pressure measurement, detect the bearing capacity at pipe joint, after pressure testing detection, remove pressure testing device.
The utility model patent of Application No. 200920108825.X discloses a kind of pipeline pressure testing device, including the first collecting unit, the second collecting unit, the first computing unit, the second computing unit, the first judging unit and the second processing unit；First collecting unit output connects the input of the first computing unit, the output of the first computing unit connects an input of the second computing unit, the output of the second collecting unit simultaneously also connects another input of the second computing unit, and the second computing unit output is sequentially connected in series the first judging unit and the first processing unit.
Existing pipeline cleaner and pressure testing device are all separately to be independently operated, to cause pipeline Rewelding to cut, and cause that work on the spot amount is big, efficiency of construction is low, and weld exists potential safety hazard simultaneously.
The patent of invention of Application No. 200810150012.7 discloses and a kind of carries out pigging, the long conveying pipeline construction method of pressure testing program simultaneously simultaneously, the method utilizes two set different devices respectively as transmitting terminal and receiving terminal, and pigging operation and pressure testing water injection work be incorporated in an operation complete, such operation merges, and do not meet relevant pipeline construction pressure test technology regulatory requirements, because miss out an important step to calibrate operation exactly, and can not carry out calibrating operation pigging and pressure testing operation simultaneously when；Because calibrating qualified ability pressure testing operation afterwards.After pipeline welding completes, first carrying out pigging (understanding the residue in pipeline), then calibrate (check caliber deformation), defective must rectify and improve if being found to have during calibrating, qualified after just can carry out water filling pressure testing and follow-up work.On the other hand, the transmitting terminal of this invention must be determined in advance with receiving terminal, can not inversely send and receive, when run into need place, water source simultaneously as water injection end and discharge ends when (when that the i.e. on-the-spot other end not possessing drainage condition), scene must be after water injection end injects water into pressure testing, water must be discharged from water injection end, but this invention cannot be suitable for.It addition, carry out pigging and pressure testing while this invention, when a pigging operation can not meet the requirements when, the pressure testing operation simultaneously carried out can be affected.
Summary of the invention
The present invention is to solve in existing pipeline cleaning, work pressure test, the workload that pipeline Rewelding cuts and brings is big, efficiency of construction is low, the problem that there is potential safety hazard；And a kind of pipeline cleaning pressure testing device and method are provided, while ensureing that each operation such as pigging, pressure testing meets pipeline construction pressure test technology code, pipeline cleaning pressure testing device is welded on pipeline, it is achieved pigging, pressure testing operation, moreover it is possible to carry out calibrating, be dried, note the operations such as nitrogen；Reduce the number of times of pipeline welding cutting, thus reduce the workload of field personnel, improve efficiency of construction, reduce pipeline because of the potential safety hazard repeatedly cut, weld.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of pipeline cleaning pressure text head, it is characterised in that include cylinder, one end of cylinder is for being connected with pipeline, and the cylinder other end is equipped with blind plate, is equipped with anti-collision air bag, is equipped with wiper in cylinder in cylinder at blind plate；The top of cylinder offers compressed air and the opening of water turnover, and the bottom of cylinder offers sewage draining exit.
A kind of pipeline cleaning pressure testing device, it is characterized in that, including two pressure text heads, two pressure text heads are connected to the two ends of pipeline, and described pressure text head includes cylinder, and one end of cylinder is for being connected with pipeline, the other end of cylinder is equipped with blind plate, being equipped with anti-collision air bag at the blind plate in cylinder, the top of cylinder offers compressed air and the opening of water turnover, cylinder offer sewage draining exit；The cylinder of pressure text head is equipped with wiper.
Being equipped with the first wiper and the second wiper in the cylinder of the pressure text head in two pressure text heads, the top of cylinder offers the first import, the second import, the first outlet and the second outlet；On first import cylinder between blind plate and the first wiper, on first outlet cylinder between the first import and the first wiper；On second import cylinder between the first wiper and the second wiper, on second outlet cylinder between the second import and the second wiper；The position that the compressed air offered on the cylinder of two pressure text heads is offered with the opening that water passes in and out and sewage draining exit is identical.
Being additionally provided with triple feed inlet on described cylinder, triple feed inlet is positioned on the cylinder after the second wiper.
Being equipped with the cylinder end of blind plate to be set to the internal diameter of undergauge structure and cylinder and taper into until identical with the internal diameter of pipeline, the first import is opened at undergauge structure.
Thermometer mouth it is equipped with on described cylinder.
A kind of pipeline cleaning pressure-measuring method, it is characterised in that include the step installing pressure text head, the step of pigging operation, calibrate step and the step of pressure testing operation of operation.One of improvement of the present invention is exactly to be welded on pressure text head on pipeline to carry out pigging, calibrate and pressure testing operation, is being cut down by pressure text head after completing.Whole pigging, calibrate, pressure testing operation have only to weld once with cutting once.
Pressure testing job step is divided into two kinds of situations according to execution conditions, and the first situation is that in pipe ends, (include 1, pipeline one end possesses water filling condition, and the other end possesses drainage condition respectively for water filling and draining；2, pipe ends is provided with water filling and drainage condition), the second situation is that one end of pipeline possesses water filling condition and drainage condition, and the other end does not possess water filling and drainage condition.
I water filling and draining pressure testing operation when pipe ends situation respectively, is carried out as follows；
A, two wipers will be put in the pressure text head of pipeline one end as water injection end (i.e. possessing water filling condition), anti-collision air bag is put into as exhaust end in the pressure text head of the pipeline other end, from water injection end water filling and promote in wherein a wiper proceeds to the pressure text head of the other end, gas is caught up with in water filling until tested setting-out is full of in pipeline；
B, startup hydraulic test pump are from water injection end water filling boosting, pressure testing；
After c, pressure testing, in the pressure text head of water injection end, injecting compressed air promotes another wiper to move ahead, and water is caught up with in gas injection, until wiper is in the pressure text head of the up to pipeline other end, the pressure testing water in pipeline is replaced by compressed air；
II water filling and the draining pressure testing operation when pipeline is with the situation of one end, carried out as follows；
A, in possessing the pressure text head of water filling and drainage condition, it is sequentially loaded into wiper and anti-collision air bag as water injection end, wiper and anti-collision air bag it is sequentially loaded into as exhaust end in the pressure text head of the pipeline other end, promoting wiper to proceed in the pressure text head of the pipeline other end from water injection end water filling, gas is caught up with in water filling until tested setting-out is full of in pipeline；
B, startup hydraulic test pump are from water injection end water filling boosting, pressure testing；
C, promoting two wipers to proceed in the pressure text head of water injection end from exhaust end injecting compressed air, the pressure testing water in pipeline is replaced by compressed air.
Operation and note nitrogen operation also it is dried after pressure testing operation.
Drying operation is for putting into foam pig water suction pigging in pressure testing, and is passed through dry air or adds hot-air and dehumidify.
The pipeline cleaning pressure testing device of the present invention and method, it is simply that the pressure text head that two are identical is arranged on the two ends of pressure testing pipeline, replace existing wiper dispensing device, wiper reception device and the device of three kinds of different structures of pressure testing device, it is advantageous that:
One, the kind of configuration device is decreased, it is simple to construction management.
Two, on the premise of ensureing that pigging pressure testing operation meets pipeline construction pressure test technology code, pressure text head only need to weld once with pipeline, abandon in existing pipeline cleaning pressure testing operation, pressure text head alternately and repeatedly uses that brings repeatedly to cut and the cumbersome process welded with pig traps, while alleviating labor strength, improving construction environment, solve pipeline and repeatedly cut and weld the potential safety hazard brought.
Three, achieve pipeline cleaning, calibrate, pressure testing, be dried and the continuity of the note operations such as nitrogen, improve work efficiency, shorten the construction period.
Four, identical due to the pressure text head structure of pipe ends, can choose at random with draining carrying out wiper transmission and reception, water filling and exchange, site operation is more flexible and convenient.
Five, this method can also also serve as discharge ends using certain one end of pipeline i.e. as water injection end.After water filling pressure testing is complete, and when the other end does not possesses drainage condition, moreover it is possible to pressure testing water is returned water injection end and discharges so that the present invention is suitable for and is suitable for field condition.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention, including being arranged on two pressure text heads of pipe ends,
Fig. 2 is one embodiment of the invention schematic diagram when carrying out pigging operation；
Fig. 3 is one embodiment of the invention schematic diagram when water filling and draining are respectively in pipe ends, during preparation water filling pressure testing operation；
Fig. 4 be one embodiment of the invention when water filling and draining are respectively in pipe ends, pressure testing complete after prepare draining time schematic diagram；
Fig. 5 is one embodiment of the invention when pressure testing operation when pipeline is with one end of water filling and draining；Prepare schematic diagram during water filling pressure testing operation；
Fig. 6 is one embodiment of the invention when pressure testing operation when pipeline is with one end of water filling and draining；Pressure testing prepares schematic diagram during draining after completing；
Fig. 7 is one embodiment of the invention when pressure testing operation when pipeline is with one end of water filling and draining；Pressure testing complete after draining time schematic diagram；
Labelling in figure: 1A, 1B are blind plate, 2A, 2B are Exchanger with Inclined Taper Shell, and 3A, 3B are the first import, 4A, 4B are Pressure gauge, and 5A, 5B are the first outlet, and 6 is the first wiper, 7A, 7B are cylinder, and 8A, 8B are the second import, and 9A, 9B are the second outlet, 10 is the second wiper, and 11A, 11B are triple feed inlet, and 12A, 12B are thermometer socket, 13A, 13B are sewage draining exit, 14A, 14B are saddle, and 15A, 15B are anti-collision air bag, and 16 is pipeline.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, and described embodiment is only a part of embodiment of the present invention, is not whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art obtained under not making creative work premise other used by embodiment, broadly fall into protection scope of the present invention.
The pipeline cleaning pressure text head that the present invention provides, including cylinder, one end of cylinder is for being connected with pipeline, and the cylinder other end is equipped with blind plate, is equipped with anti-collision air bag, is equipped with wiper in cylinder in cylinder at blind plate；The top of cylinder offers compressed air and the opening of water turnover, and the bottom of cylinder offers sewage draining exit.
Wiper for pipeline is cleared up, sweep water, pressure testing, the work such as be dried.And carrying out different work when, arrange different devices, such as, carrying out pigging operation when, in cylinder, arrange wiper, calibrating operation when, arrange diameter measurer, carrying out pressure testing when, arrange wiper.Pipeline carries out the device needing to arrange the when of each operation, and those skilled in the art can be appreciated and understood that, not repeat them here.And wiper, diameter measurer broadly fall into prior art products.
The pipeline cleaning pressure testing device that the present invention provides, including two pressure text heads, two pressure text heads are connected to the two ends of pipeline, described pressure text head includes cylinder 7A, 7B, one end of cylinder is for being connected with pipeline 16, and the other end of cylinder is equipped with blind plate 1A, 1B, is equipped with anti-collision air bag 15A, 15B in cylinder at blind plate, the top of cylinder offers compressed air and the opening of water turnover, and the bottom of cylinder offers sewage draining exit 13A, 13B；Cylinder is equipped with wiper 6,10.
Blind plate selects excellent fast opening blind, it is simple to according to different operation needs, changes different accessories (such as different types of wiper, caliber gauge, spherical pig, foam ball etc.) in cylinder；The number and type of selection of wiper 6,10 configures according to different operation (pigging, pressure testing, be dried).These accessories broadly fall into prior art products, and those skilled in the art, it is also known that select different accessories according to different operations, does not repeats them here.
Being equipped with the first wiper 6 and the second wiper 10 in the cylinder of the pressure text head in two pressure text heads, the top of cylinder offers first import 3A, 3B, second import 8A, 8B, first outlet 5A, 5B and second outlet 9A, 9B；On first import 3A cylinder between blind plate 1A and the first wiper 6, on the first outlet 5A cylinder between the first import 3A and the first wiper 6；On second import 8A cylinder between the first wiper 6 and the second wiper 10, on the second outlet 9A cylinder between the second import 8A and the second wiper 10.The position that the compressed air offered on the cylinder of two pressure text heads is offered with the opening that water passes in and out and sewage draining exit is identical.
Being additionally provided with triple feed inlet on described cylinder, triple feed inlet is positioned on the cylinder after the second wiper.The purpose arranging triple feed inlet is to add water in pigging pressure testing operation in cylinder, plays the effect of lubrication.
The pigging pressure testing device of the present invention each in two pressure text heads respectively can also arrange a wiper, and the position that wherein the first import, the second import, the first outlet, the second outlet, triple feed inlet and sewage draining exit are offered is identical with import and export, Location for Sewage during arranging two wiper in the pressure text head in two pressure text heads.
It is equipped with the cylinder end of blind plate to be set to the internal diameter of undergauge structure and cylinder and taper into until identical with the internal diameter of pipeline, first import is opened at undergauge structure, simultaneously when the end thereof contacts anti-collision air bag of wiper, the other end of wiper should be positioned at the small-caliber end of cylinder, so ensure that when wiper contacts with anti-collision air bag when, compressed air or water that the first import enters can promote wiper to move towards the direction away from anti-collision air bag.
Inlet and outlet number is determined according to the wiper number arranged, and water or compressed air in the setting pipeline to be ensured of inlet and outlet can be completely exhausted out, and prevent air dead angle.
The present invention is provided with saddle 14A, 14B in the bottom of cylinder, it is simple to the installation of pressure text head and placement.
The pipeline cleaning pressure-measuring method of the present invention, including:
The step of pressure text head is installed: determine that water filling and draining are (when pipeline one end neither possesses water filling condition in same one end of pipeline according to drainage point, the when of not possessing drainage condition, then water filling and draining need to carry out in same one end of pipeline) or the most at one end；Two pressure text heads are separately mounted to the two ends of pipeline, and import, outlet and sewage draining exit etc. on pressure text head install valve and are connected with water, air pipe.
The step of pigging operation: the step of pigging operation can according to circumstances carry out repeatedly pigging operation, until pigging operation is qualified.
Calibrate the step of operation: pressure text head, pigging operation are installed, calibrate operation those skilled in the art and can be appreciated and understood that, do not repeat them here；
The step of pressure testing operation；
I water filling and draining pressure testing operation when the situation of pipe ends respectively, is carried out as follows；
A will put at least two wiper as water injection end in the pressure text head of pipeline one end, put into anti-collision air bag as exhaust end, moved to the pressure text head of the pipeline other end by least one wiper from water injection end water filling, drain the air in pipeline in the pressure text head of the other end；
B starts hydraulic test pump from water injection end water filling pressure testing；
C injecting compressed air in the pressure text head of water injection end drives wiper to carry out draining, until wiper moves to the pressure text head of the pipeline other end, drains the pressure testing water in pipeline；
II water filling and the draining pressure testing operation when pipeline is with the situation of one end, carried out as follows；
Pipeline one end can be carried out the pressure text head of water filling and draining and be sequentially loaded into wiper and anti-collision air bag as water injection end by a, wiper and anti-collision air bag it is sequentially loaded into as exhaust end in the pressure testing of the other end, drive wiper to move to the pressure text head of the pipeline other end from water injection end water filling, drain the air in pipeline；
B starts hydraulic test pump from water injection end water filling pressure testing；
C drives wiper to move to the pressure text head of water injection end from exhaust end injecting compressed air, drains the pressure testing water in pipeline；
Further, operation and note nitrogen operation also it are dried after pressure testing operation.Drying operation and note nitrogen operation, those skilled in the art can be appreciated and understood that, not repeat them here.
Further, described drying operation is for putting into foam pig water suction pigging in pressure testing, and is passed through dry air or adds hot-air and dehumidify.
Embodiment one
The pipeline cleaning pressure testing device of the present embodiment, including two pressure text heads, two pressure text heads are connected to the two ends of pipeline 16, and pressure text head includes cylinder 7A, 7B, one end of cylinder 7A, 7B is for being connected with pipeline, and the other end is undergauge structure and is equipped with blind plate 1A, 1B and anti-collision air bag 15A, 15B；Being equipped with two wipers in cylinder, be called the first wiper 6 and the second wiper 10, now the opening on cylinder top and outlet are it should be guaranteed that water or compressed air in pipeline, between wiper can be discharged, and prevent air dead angle.
Therefore, now the top of cylinder offers first import 3A, 3B, second import 8A, 8B, first outlet 5A, 5B and second outlet 9A, 9B；On first import 3A cylinder between blind plate 1A and the first wiper 6, on the first outlet 5A cylinder between the first import 3A and the first wiper 6；On second import 8A cylinder between the first wiper 6 and the second wiper 10, on the second outlet 9A cylinder between the second import 8A and the second wiper 10.Owing to wiper moves in pipeline, when being equipped with two wipers in the pressure text head of pipeline one end when, in order to realize can carrying out water filling and drainage works in pipeline either end, the position that preferably inlet and outlet of two ends pressure text head is offered is identical.Thermometer mouth 12A, 12B and Pressure gauge 4A, 4B it is equipped with on cylinder 7A, 7B.
The bottom of cylinder 7A, 7B offers sewage draining exit 13A, 13B, and for supporting saddle 14A, 14B of cylinder.
The pigging pressure-measuring method of the present embodiment, the step including installing pressure text head: (when pipeline one end neither possesses water filling condition, the when of not possessing drainage condition, then water filling and draining need to carry out in same one end of pipeline), or the most at one end；Two pressure text heads are separately mounted to the two ends of pipeline, and import, outlet and sewage draining exit etc. on pressure text head install valve and are connected with water, air pipe.
The step of pigging operation:
An optional pressure text head is wiper transmitting terminal, and another pressure text head is wiper receiving terminal；
Transmitting terminal: open blind plate 1A, puts into the first wiper 6, closes blind plate 1A, opens the first import 3A, closes the second import 8A, the first outlet 5A, the second outlet 9A and sewage draining exit 13A.
Receiving terminal: open blind plate 1B, closes blind plate 1B after putting into anti-collision air bag 15, closes the first import 3B, the second import 8B, the first outlet 5B, the second outlet 9B, opens sewage draining exit 13B.
Start from the first import 3A injecting compressed air, compressed air drives the first wiper 6 to move ahead and cleans booty in pipeline 16, until entering in receiving terminal pressure text head, stop gas injection, after pressure releasing, open receiving terminal blind plate 1B and take out the first wiper 6, complete a pigging, as required, can repeated multiple times repeat to clean until qualified.
Calibrate the step of operation:
Pressure text head, pigging operation are installed, calibrate operation those skilled in the art and can be appreciated and understood that, do not repeat them here.
The step of pressure testing operation:
I water filling and draining pressure testing operation when the situation of pipe ends respectively, is carried out as follows；
The water filling of step a
Water injection end: be sequentially placed into two wipers after opening blind plate 1A, is called the second wiper 10 and the first wiper 6, closes blind plate 1A, opens the first import 3A, the second import 8A, the first outlet 5A and the second outlet 9A, closes sewage draining exit 13A；
Exhaust end: open after blind plate 1B puts into anti-collision air bag 15B and close blind plate 1B, open the first import 3B, close the second import 8B, closes the first outlet 5B, the second outlet 9B and sewage draining exit 13B.
Water is injected to the first import 3A and the second import 8A respectively, simultaneously from the first outlet 5A and the second outlet 9A air-out from water injection end；When air drains, close the first outlet 5A, the second outlet 9A and the first import 3A；Second import 8A continues water filling and promotes the second wiper 10 to move ahead, and the air in pipeline 16 is discharged, until the second wiper 10 arrives the pressure text head end of exhaust end by the first import 3B of discharge ends under the second wiper 10 is driven；Air is not had i.e. to stop water filling the second import 8A closing water injection end and the first import 3A of exhaust end in confirming pipeline 16；
The pressure testing of step b
Start hydraulic test pump and arrive the pressure testing value of regulation from the second import 8A water filling boosting of water injection end, stop water filling, close the second import 8A, voltage stabilizing 4 hours；Slowly it is depressurized to Tightness test value, voltage stabilizing 24 hours, checks pipeline tightness；
The draining of step c
Open the first import 3A and the sewage draining exit 13B of exhaust end of water injection end, from the first import 3A injecting compressed air of water injection end, gas push the first wiper 6 catches up with water to move ahead, the water of pipeline 16 is discharged by the sewage draining exit 13B of discharge ends, until the first wiper 6 arrives the pressure text head end of discharge ends, draining terminates.
When the water filling determined according to step 1 and draining pipeline with one end when, carry out as follows；
The water filling of step a
Water injection end: open blind plate 1A, closes blind plate 1A after putting into the first wiper 6, opens the first import 3A and first outlet 5A, closes the second import 8A, the second outlet 9A and sewage draining exit 13A.
Exhaust end: close blind plate 1B after being sequentially placed into the second wiper 10, anti-collision air bag 15B after opening blind plate 1B, open the first import 3B and the second import 8B, closes the first outlet 5B, the second outlet 9B and sewage draining exit 13B.
Water is injected from the first import 3A of water injection end, simultaneously from the first outlet 5A air-out until closing the second outlet 5A after air is drained, continuing to inject water from the first import 3A promotes the first wiper 6 to move ahead, air in pipeline 16 is discharged from the first import 3B and the second import 8B of exhaust end under the impetus of the first wiper 6, does not has during air stop water filling and close the first import 3B and the second import 8B of exhaust end in confirming pipeline 16.
The pressure testing of step b
Starting hydraulic test pump from water injection end water filling boosting until stopping water filling after arriving the pressure testing value of regulation, closing water filling import, voltage stabilizing 4 hours；Slowly it is depressurized to Tightness test value, voltage stabilizing 24 hours, checks pipeline tightness.
The draining of step c
Opening the sewage draining exit 13A of water injection end, open the first import 3B injecting compressed air of exhaust end, gas push the first wiper 6 and the second wiper 10 move ahead until the first wiper 6 arrives the pressure text head end of water injection end, and draining terminates.
Embodiment two
The pipeline cleaning pressure testing device of the present embodiment, including two pressure text heads, two pressure text heads are connected to the two ends of pipeline 16, and pressure text head includes cylinder 7A, 7B, one end of cylinder 7A, 7B is for being connected with pipeline, and the other end is undergauge structure and is equipped with blind plate 1A, 1B and anti-collision air bag 15A, 15B；Being equipped with two wipers in cylinder, be called the first wiper 6 and the second wiper 10, now the opening on cylinder top and outlet are it should be guaranteed that water or compressed air in pipeline, between wiper can be discharged, and prevent air dead angle.
Therefore, now the top of cylinder offers first import 3A, 3B, second import 8A, 8B, triple feed inlet 11A, 11B, first outlet 5A, 5B and second outlet 9A, 9B；On first import 3A cylinder between blind plate 1A and the first wiper 6, on the first outlet 5A cylinder between the first import 3A and the first wiper 6；On second import 8A cylinder between the first wiper 6 and the second wiper 10, on the second outlet 9A cylinder between the second import 8A and the second wiper 10.Triple feed inlet 11A is opened on the cylinder after the second wiper 10.Owing to wiper moves in pipeline, when being equipped with two wipers in the pressure text head of pipeline one end when, in order to realize can carrying out water filling and drainage works in pipeline either end, the position that preferably inlet and outlet of two ends pressure text head is offered is identical.Certainly the position that the inlet and outlet of pipe ends pressure text head is offered can also be different.Thermometer mouth 12A, 12B and Pressure gauge 4A, 4B it is equipped with on cylinder 7A, 7B.
The bottom of cylinder 7A, 7B offers sewage draining exit 13A, 13B, and for supporting saddle 14A, 14B of cylinder.
The pigging pressure-measuring method of the present embodiment, the step including installing pressure text head: (when pipeline one end neither possesses water filling condition, the when of not possessing drainage condition, then water filling and draining need to carry out in same one end of pipeline), or the most at one end；Two pressure text heads are separately mounted to the two ends of pipeline, and import, outlet and sewage draining exit etc. on pressure text head install valve and are connected with water, air pipe.
The step of pigging operation:
An optional pressure text head is wiper transmitting terminal, and another pressure text head is wiper receiving terminal；
Transmitting terminal: open blind plate 1A, puts into the first wiper 6, closes blind plate 1A, opens the first import 3A, closes the second import 8A, triple feed inlet 11A, the first outlet 5A, the second outlet 9A and sewage draining exit 13A.
Receiving terminal: open blind plate 1B, closes blind plate 1B after putting into anti-collision air bag 15, closes the first import 3B, the second import 8B, triple feed inlet 11B, the first outlet 5B, the second outlet 9B, opens sewage draining exit 13B.
Start from the first import 3A injecting compressed air, compressed air drives the first wiper 6 to move ahead and cleans booty in pipeline 16, until entering in receiving terminal pressure text head, stop gas injection, after pressure releasing, open receiving terminal blind plate 1B and take out the first wiper 6, complete a pigging, as required, can repeated multiple times repeat to clean until qualified.
Calibrate the step of operation:
Pressure text head, pigging operation are installed, calibrate operation those skilled in the art and can be appreciated and understood that, do not repeat them here；
The step of pressure testing operation:
I water filling and draining pressure testing operation when the situation of pipe ends respectively, is carried out as follows；
The water filling of step a
Water injection end: be sequentially placed into two wipers after opening blind plate 1A, is called the second wiper 10 and the first wiper 6, closes blind plate 1A, opens the first import 3A, the second import 8A, the first outlet 5A and the second outlet 9A, closes sewage draining exit 13A and triple feed inlet 11A；
Exhaust end: open after blind plate 1B puts into anti-collision air bag 15B and close blind plate 1B, open the first import 3B, closes the second import 8B, triple feed inlet 11B, the first outlet 5B, the second outlet 9B and sewage draining exit 13B.
Water is injected to the first import 3A and the second import 8A respectively, simultaneously from the first outlet 5A and the second outlet 9A air-out from water injection end；When air drains, close the first outlet 5A, the second outlet 9A and the first import 3A；Second import 8A continues water filling and promotes the second wiper 10 to move ahead, and the air in pipeline 16 is discharged, until the second wiper 10 arrives in the pressure text head of exhaust end by the first import 3B of discharge ends under the second wiper 10 is driven；Air is not had i.e. to stop water filling the second import 8A closing water injection end and the first import 3A of exhaust end in confirming pipeline 16；
The pressure testing of step b
Start hydraulic test pump and arrive the pressure testing value of regulation from the second import 8A water filling boosting of water injection end, stop water filling, close the second import 8A, voltage stabilizing 4 hours；Slowly it is depressurized to Tightness test value, voltage stabilizing 24 hours, checks pipeline tightness；
The draining of step c
Open the first import 3A and the sewage draining exit 13B of exhaust end of water injection end, from the first import 3A injecting compressed air of water injection end, gas push the first wiper 6 catches up with water to move ahead, the water of pipeline 16 is discharged by the sewage draining exit 13B of discharge ends, until the first wiper 6 arrives the pressure text head end of discharge ends, draining terminates.
When the water filling determined according to step 1 and draining pipeline with one end when, carry out as follows；
The water filling of step a
Water injection end: open blind plate 1A, closes blind plate 1A after putting into the first wiper 6, opens the first import 3A and first outlet 5A, closes the second import 8A, triple feed inlet 11A, the second outlet 9A and sewage draining exit 13A.
Exhaust end: close blind plate 1B after being sequentially placed into the second wiper 10, anti-collision air bag 15B after opening blind plate 1B, open the first import 3B, the second import 8B and triple feed inlet 11B, closes the first outlet 5B, the second outlet 9B and sewage draining exit 13B.
Water is injected from the first import 3A of water injection end, simultaneously from the first outlet 5A air-out until closing the second outlet 5A after air is drained, continuing to inject water from the first import 3A promotes the first wiper 6 to move ahead, air in pipeline 16 is discharged from the first import 3B of exhaust end, the second import 8B, triple feed inlet 11B under the impetus of the first wiper 6, does not has during air stop water filling and close the first import 3B of exhaust end, the second import 8B and triple feed inlet 11B in confirming pipeline 16.
The pressure testing of step b
Starting hydraulic test pump from water injection end water filling boosting until stopping water filling after arriving the pressure testing value of regulation, closing water filling import, voltage stabilizing 4 hours；Slowly it is depressurized to Tightness test value, voltage stabilizing 24 hours, checks pipeline tightness.
The draining of step c
Opening the sewage draining exit 13A of water injection end, open the first import 3B injecting compressed air of exhaust end, gas push the first wiper 6 and the second wiper 10 move ahead until the first wiper 6 arrives in the pressure text head of water injection end, and draining terminates.Due to a whole process of having passed by before the first wiper 6, the abrasion of stripper rubber, it would appear that leakage gas blowby, to such an extent as to pressure reduction can not be formed, not having thrust, be previously positioned at the second wiper 10 of exhaust end and carry out pushing tow so just enabling and realize catching up with water, the water of pipeline 16 is discharged by the sewage draining exit 13 of water injection end, until the first wiper 6 arrives water injection end pressure text head end, draining terminates.
Embodiment three
The pipeline cleaning pressure testing device of the present embodiment, including two pressure text heads, two pressure text heads are connected to the two ends of pipeline 16, and pressure text head includes cylinder 7A, 7B, one end of cylinder 7A, 7B is for being connected with pipeline, and the other end is undergauge structure and is equipped with blind plate 1A, 1B and anti-collision air bag 15A, 15B；Being equipped with two wipers in cylinder, be called the first wiper 6 and the second wiper 10, now the opening on cylinder top and outlet are it should be guaranteed that water or compressed air in pipeline, between wiper can be discharged, and prevent air dead angle.
Therefore, now the top of cylinder offers first import 3A, 3B, second import 8A, 8B, first outlet 5A, 5B and second outlet 9A, 9B；On first import 3A cylinder between blind plate 1A and the first wiper 6, on the first outlet 5A cylinder between the first import 3A and the first wiper 6；On second import 8A cylinder between the first wiper 6 and the second wiper 10, on the second outlet 9A cylinder between the second import 8A and the second wiper 10.Owing to wiper moves in pipeline, when being equipped with two wipers in the pressure text head of pipeline one end when, in order to realize can carrying out water filling and drainage works in pipeline either end, the position that the inlet and outlet of two ends pressure text head is offered is identical.Certainly the position that the inlet and outlet of pipe ends pressure text head is offered can also be different.Thermometer mouth 12A, 12B and Pressure gauge 4A, 4B it is equipped with on cylinder 7A, 7B.
The bottom of cylinder 7A, 7B offers sewage draining exit 13A, 13B, and for supporting saddle 14A, 14B of cylinder.
The pigging pressure-measuring method of the present embodiment, the step including installing pressure text head: (when pipeline one end neither possesses water filling condition, the when of not possessing drainage condition, then water filling and draining need to carry out in same one end of pipeline), or the most at one end；Two pressure text heads are separately mounted to the two ends of pipeline, and import, outlet and sewage draining exit etc. on pressure text head install valve and are connected with water, air pipe.
The step of pigging operation:
An optional pressure text head is wiper transmitting terminal, and another pressure text head is wiper receiving terminal；
Transmitting terminal: open blind plate 1A, puts into the first wiper 6, closes blind plate 1A, opens the first import 3A, closes the second import 8A, the first outlet 5A, the second outlet 9A and sewage draining exit 13A.
Receiving terminal: open blind plate 1B, closes blind plate 1B after putting into anti-collision air bag 15, closes the first import 3B, the second import 8B, the first outlet 5B, the second outlet 9B, opens sewage draining exit 13B.
Start from the first import 3A injecting compressed air, compressed air drives the first wiper 6 to move ahead and cleans booty in pipeline 16, until entering in receiving terminal pressure text head, stop gas injection, after pressure releasing, open receiving terminal blind plate 1B and take out the first wiper 6, complete a pigging, as required, can repeated multiple times repeat to clean until qualified.
Calibrate the step of operation:
Pressure text head, pigging operation are installed, calibrate operation those skilled in the art and can be appreciated and understood that, do not repeat them here；
The step of pressure testing operation:
I water filling and draining pressure testing operation when the situation of pipe ends respectively, is carried out as follows；
The water filling of step a
Water injection end: be sequentially placed into two wipers after opening blind plate 1A, is called the second wiper 10 and the first wiper 6, closes blind plate 1A, opens the first import 3A, the second import 8A, the first outlet 5A and the second outlet 9A, closes sewage draining exit 13A；
Exhaust end: open after blind plate 1B puts into anti-collision air bag 15B and close blind plate 1B, open the first import 3B, close the second import 8B, closes the first outlet 5B, the second outlet 9B and sewage draining exit 13B.
Water is injected to the first import 3A and the second import 8A respectively, simultaneously from the first outlet 5A and the second outlet 9A air-out from water injection end；When air drains, close the first outlet 5A, the second outlet 9A and the first import 3A；Second import 8A continues water filling and promotes the second wiper 10 to move ahead, and the air in pipeline 16 is discharged, until the second wiper 10 arrives the pressure text head end of exhaust end by the first import 3B of discharge ends under the second wiper 10 is driven；Air is not had i.e. to stop water filling the second import 8A closing water injection end and the first import 3A of exhaust end in confirming pipeline 16；
The pressure testing of step b
Start hydraulic test pump and arrive the pressure testing value of regulation from the second import 8A water filling boosting of water injection end, stop water filling, close the second import 8A, voltage stabilizing 4 hours；Slowly it is depressurized to Tightness test value, voltage stabilizing 24 hours, checks pipeline tightness；
The draining of step c
Open the first import 3A and the sewage draining exit 13B of exhaust end of water injection end, from the first import 3A injecting compressed air of water injection end, gas push the first wiper 6 catches up with water to move ahead, the water of pipeline 16 is discharged by the sewage draining exit 13B of discharge ends, until the first wiper 6 arrives the pressure text head end of discharge ends, draining terminates.
When the water filling determined according to step 1 and draining pipeline with one end when, carry out as follows；
The water filling of step a
Water injection end: open blind plate 1A, closes blind plate 1A after putting into the first wiper 6, opens the first import 3A and first outlet 5A, closes the second import 8A, the second outlet 9A and sewage draining exit 13A.
Exhaust end: close blind plate 1B after being sequentially placed into the second wiper 10, anti-collision air bag 15B after opening blind plate 1B, open the first import 3B and the second import 8B, closes the first outlet 5B, the second outlet 9B and sewage draining exit 13B.
Water is injected from the first import 3A of water injection end, simultaneously from the first outlet 5A air-out until closing the second outlet 5A after air is drained, continuing to inject water from the first import 3A promotes the first wiper 6 to move ahead, air in pipeline 16 is discharged from the first import 3B and the second import 8B of exhaust end under the impetus of the first wiper 6, does not has during air stop water filling and close the first import 3B and the second import 8B of exhaust end in confirming pipeline 16.
The pressure testing of step b
Starting hydraulic test pump from water injection end water filling boosting until stopping water filling after arriving the pressure testing value of regulation, closing water filling import, voltage stabilizing 4 hours；Slowly it is depressurized to Tightness test value, voltage stabilizing 24 hours, checks pipeline tightness.
The draining of step c
Opening the sewage draining exit 13A of water injection end, open the first import 3B injecting compressed air of exhaust end, gas push the first wiper 6 and the second wiper 10 move ahead until the first wiper 6 arrives the pressure text head end of water injection end, and draining terminates.
Operation it is dried again after the pressure testing end of job, drying operation is to put into foam pig water suction pigging in pressure text head, is passed through dry air or adds hot-air and dehumidify, being dried job step similar with pigging operation, those skilled in the art can be appreciated and understood that, does not repeats them here.
Embodiment four
The pipeline cleaning pressure testing device of the present embodiment, including two pressure text heads, two pressure text heads are connected to the two ends of pipeline 16, and pressure text head includes cylinder 7A, 7B, one end of cylinder 7A, 7B is for being connected with pipeline, and the other end is undergauge structure and is equipped with blind plate 1A, 1B and anti-collision air bag 15A, 15B；Being equipped with two wipers in cylinder, be called the first wiper 6 and the second wiper 10, now the opening on cylinder top and outlet are it should be guaranteed that water or compressed air in pipeline, between wiper can be discharged, and prevent air dead angle.
Therefore, now the top of cylinder offers first import 3A, 3B, second import 8A, 8B, first outlet 5A, 5B and second outlet 9A, 9B；On first import 3A cylinder between blind plate 1A and the first wiper 6, on the first outlet 5A cylinder between the first import 3A and the first wiper 6；On second import 8A cylinder between the first wiper 6 and the second wiper 10, on the second outlet 9A cylinder between the second import 8A and the second wiper 10.Owing to wiper moves in pipeline, when being equipped with two wipers in the pressure text head of pipeline one end when, in order to realize can carrying out water filling and drainage works in pipeline either end, the position that preferably inlet and outlet of two ends pressure text head is offered is identical.Certainly the position that the inlet and outlet of pipe ends pressure text head is offered can also be different.Thermometer mouth 12A, 12B and Pressure gauge 4A, 4B it is equipped with on cylinder 7A, 7B.
The bottom of cylinder 7A, 7B offers sewage draining exit 13A, 13B, and for supporting saddle 14A, 14B of cylinder.
The pigging pressure-measuring method of the present embodiment, the step including installing pressure text head: (when pipeline one end neither possesses water filling condition, the when of not possessing drainage condition, then water filling and draining need to carry out in same one end of pipeline), or the most at one end；Two pressure text heads are separately mounted to the two ends of pipeline, and import, outlet and sewage draining exit etc. on pressure text head install valve and are connected with water, air pipe.
The step of pigging operation:
An optional pressure text head is wiper transmitting terminal, and another pressure text head is wiper receiving terminal；
Transmitting terminal: open blind plate 1A, puts into the first wiper 6, closes blind plate 1A, opens the first import 3A, closes the second import 8A, the first outlet 5A, the second outlet 9A and sewage draining exit 13A.
Receiving terminal: open blind plate 1B, closes blind plate 1B after putting into anti-collision air bag 15, closes the first import 3B, the second import 8B, the first outlet 5B, the second outlet 9B, opens sewage draining exit 13B.
Start from the first import 3A injecting compressed air, compressed air drives the first wiper 6 to move ahead and cleans booty in pipeline 16, until entering in receiving terminal pressure text head, stop gas injection, after pressure releasing, open receiving terminal blind plate 1B and take out the first wiper 6, complete a pigging, as required, can repeated multiple times repeat to clean until qualified.
Calibrate the step of operation:
Pressure text head, pigging operation are installed, calibrate operation those skilled in the art and can be appreciated and understood that, do not repeat them here；
The step of pressure testing operation:
I water filling and draining pressure testing operation when the situation of pipe ends respectively, is carried out as follows；
The water filling of step a
Water injection end: be sequentially placed into two wipers after opening blind plate 1A, is called the second wiper 10 and the first wiper 6, closes blind plate 1A, opens the first import 3A, the second import 8A, the first outlet 5A and the second outlet 9A, closes sewage draining exit 13A；
Exhaust end: open after blind plate 1B puts into anti-collision air bag 15B and close blind plate 1B, open the first import 3B, close the second import 8B, closes the first outlet 5B, the second outlet 9B and sewage draining exit 13B.
Water is injected to the first import 3A and the second import 8A respectively, simultaneously from the first outlet 5A and the second outlet 9A air-out from water injection end；When air drains, close the first outlet 5A, the second outlet 9A and the first import 3A；Second import 8A continues water filling and promotes the second wiper 10 to move ahead, and the air in pipeline 16 is discharged, until the second wiper 10 arrives the pressure text head end of exhaust end by the first import 3B of discharge ends under the second wiper 10 is driven；Air is not had i.e. to stop water filling the second import 8A closing water injection end and the first import 3A of exhaust end in confirming pipeline 16；
The pressure testing of step b
Start hydraulic test pump and arrive the pressure testing value of regulation from the second import 8A water filling boosting of water injection end, stop water filling, close the second import 8A, voltage stabilizing 4 hours；Slowly it is depressurized to Tightness test value, voltage stabilizing 24 hours, checks pipeline tightness；
The draining of step c
Open the first import 3A and the sewage draining exit 13B of exhaust end of water injection end, from the first import 3A injecting compressed air of water injection end, gas push the first wiper 6 catches up with water to move ahead, the water of pipeline 16 is discharged by the sewage draining exit 13B of discharge ends, until the first wiper 6 arrives the pressure text head end of discharge ends, draining terminates.
When the water filling determined according to step 1 and draining pipeline with one end when, carry out as follows；
The water filling of step a
Water injection end: open blind plate 1A, closes blind plate 1A after putting into the first wiper 6, opens the first import 3A and first outlet 5A, closes the second import 8A, the second outlet 9A and sewage draining exit 13A.
Exhaust end: close blind plate 1B after being sequentially placed into the second wiper 10, anti-collision air bag 15B after opening blind plate 1B, open the first import 3B and the second import 8B, closes the first outlet 5B, the second outlet 9B and sewage draining exit 13B.
Water is injected from the first import 3A of water injection end, simultaneously from the first outlet 5A air-out until closing the second outlet 5A after air is drained, continuing to inject water from the first import 3A promotes the first wiper 6 to move ahead, air in pipeline 16 is discharged from the first import 3B and the second import 8B of exhaust end under the impetus of the first wiper 6, does not has during air stop water filling and close the first import 3B and the second import 8B of exhaust end in confirming pipeline 16.
The pressure testing of step b
Starting hydraulic test pump from water injection end water filling boosting until stopping water filling after arriving the pressure testing value of regulation, closing water filling import, voltage stabilizing 4 hours；Slowly it is depressurized to Tightness test value, voltage stabilizing 24 hours, checks pipeline tightness.
The draining of step c
Opening the sewage draining exit 13A of water injection end, open the first import 3B injecting compressed air of exhaust end, gas push the first wiper 6 and the second wiper 10 move ahead until the first wiper 6 arrives the pressure text head end of water injection end, and draining terminates.
Operation it is dried again after the pressure testing end of job, drying operation is to put into foam pig water suction pigging in pressure text head, is passed through dry air or adds hot-air and dehumidify, being dried job step similar with pigging operation, those skilled in the art can be appreciated and understood that, does not repeats them here.
Drying operation is carrying out noting nitrogen operation after completing, and note nitrogen operation is similar with pigging operation, and those skilled in the art is appreciated and understood that, at this without repeating.
Claims (3)
1. a pipeline cleaning pressure-measuring method, the method is based on pipeline cleaning pressure testing device, pipeline cleaning pressure testing device includes two pressure text heads, two pressure text heads are connected to the two ends of pipeline, and described pressure text head includes cylinder, and one end of cylinder is for being connected with pipeline, the other end of cylinder is equipped with blind plate, being equipped with anti-collision air bag at blind plate in cylinder, the top of cylinder offers compressed air and the opening of water turnover, and the bottom of cylinder offers sewage draining exit；Wiper it is equipped with in cylinder；Being equipped with the first wiper and the second wiper in the cylinder of the pressure text head in two pressure text heads, the top of cylinder offers the first import, the second import, the first outlet and the second outlet；On first import cylinder between blind plate and the first wiper, on first outlet cylinder between the first import and the first wiper；On second import cylinder between the first wiper and the second wiper, on second outlet cylinder between the second import and the second wiper；The position that the compressed air offered on the cylinder of two pressure text heads is offered with the opening that water passes in and out and sewage draining exit is identical；Being additionally provided with triple feed inlet on described cylinder, triple feed inlet is positioned on the cylinder after the second wiper；Thermometer mouth it is equipped with on described cylinder；Described pipeline cleaning pressure-measuring method includes the step installing pressure text head, the step of pigging operation, calibrates step and the step of pressure testing operation of operation, it is characterised in that the step of pressure testing operation is carried out in accordance with the following steps:
I water filling and draining pressure testing operation when pipe ends situation respectively, is carried out as follows；
A, two wipers will be put in the pressure text head of pipeline one end as water injection end, anti-collision air bag is put into as exhaust end in the pressure text head of the pipeline other end, from water injection end water filling and promote in wherein a wiper proceeds to the pressure text head of the other end, gas is caught up with in water filling until tested setting-out is full of in pipeline；
B, startup hydraulic test pump are from water injection end water filling boosting, pressure testing；
After c, pressure testing, in the pressure text head of water injection end, injecting compressed air promotes another wiper to move ahead, and water is caught up with in gas injection, until wiper is in the pressure text head of the up to pipeline other end, the pressure testing water in pipeline is replaced by compressed air；
II water filling and the draining pressure testing operation when pipeline is with the situation of one end, carried out as follows；
A, in possessing the pressure text head of water filling and drainage condition, it is sequentially loaded into wiper and anti-collision air bag as water injection end, wiper and anti-collision air bag it is sequentially loaded into as exhaust end in the pressure text head of the pipeline other end, promoting wiper to proceed in the pressure text head of the pipeline other end from water injection end water filling, gas is caught up with in water filling until tested setting-out is full of in pipeline；
B, startup hydraulic test pump are from water injection end water filling boosting, pressure testing；
C, promoting two wipers to proceed in the pressure text head of water injection end from exhaust end injecting compressed air, the pressure testing water in pipeline is replaced by compressed air.
Pipeline cleaning pressure-measuring method the most according to claim 1, it is characterised in that be also dried operation and note nitrogen operation after pressure testing operation.
Pipeline cleaning pressure-measuring method the most according to claim 2, it is characterised in that described drying operation is for putting into foam pig water suction pigging in pressure text head, and is passed through dry air or adds hot-air and dehumidify.
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| CN104307819B (en) * | 2014-10-14 | 2017-01-11 | 中国石油天然气股份有限公司 | Combined cleaning method of waste oil and gas pipeline residues |
| CN104807701B (en) * | 2015-04-01 | 2017-10-24 | 中石化工建设有限公司 | Pipeline pressure test technique |
| CN109406186B (en) * | 2018-12-07 | 2019-10-18 | 中国石油大学(北京) | Deep Water Steel catenary riser pigging simulation test device |
| CN110595899B (en) * | 2019-09-12 | 2022-04-15 | 中国化学工程第六建设有限公司 | Pressure testing device and pressure testing method for long-distance pipeline |
| CN111318531B (en) * | 2020-02-28 | 2022-03-29 | 温氏食品集团股份有限公司 | Cage cleaning system |
| CN113319078B (en) * | 2020-06-28 | 2022-05-20 | 中国海洋石油集团有限公司 | Automatic pigging ball emitter and automatic pigging method |
| CN113532770B (en) * | 2021-07-26 | 2023-05-12 | 重庆工商大学 | Device and method for measuring micropore leakage of injection glass container |
| CN114608510B (en) * | 2022-03-29 | 2023-11-24 | 无锡连强智能装备有限公司 | Automatic external diameter measuring device of lathe with accurate measurement effect |
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