CN103629470A - Pipeline nonstop-transmission holing and plugging system and process method thereof - Google Patents
Pipeline nonstop-transmission holing and plugging system and process method thereof Download PDFInfo
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- CN103629470A CN103629470A CN201310680994.1A CN201310680994A CN103629470A CN 103629470 A CN103629470 A CN 103629470A CN 201310680994 A CN201310680994 A CN 201310680994A CN 103629470 A CN103629470 A CN 103629470A
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- pipeline
- upper joint
- joint sleeve
- gate valve
- sleeve cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/0436—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid jets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a pipeline nonstop-transmission holing and plugging system and a process method thereof. The system comprises a bracket, a pipeline roundness recovering device and a pressured pipeline cleaning device, wherein the bracket adopts a steel saddle-shaped bracket and is connected with a nonstop-transmission holing and plugging operating pipeline; the pipeline roundness recovering device is integrally made of aluminum alloy material and is installed in a position, which is required to be holed, of the nonstop-transmission holing and plugging operating pipeline; the pressured pipeline cleaning device is installed on the steel saddle-shaped bracket. The pipeline nonstop-transmission holing and plugging system meets the requirements of polyethylene pipeline nonstop-transmission holing and plugging and the special requirement on the ellipticity of the inner wall of the pipeline when a gas polyethylene pipeline is plugged, is high in structural strength and reliable in connection, has good pressure resistance and shock resistance and a simple structure, and is convenient and practical.
Description
Technical field
The present invention relates to not stopping transportation plugging holes system of a kind of pipeline, also relate to the not technological method of stopping transportation plugging holes system of a kind of pipeline.
Background technique
Polyethylene pipe is for the conveying of combustion gas etc., has the features such as long, corrosion-resistant, easy construction of life-span, in industries such as combustion gas, water supply, obtained extensive utilization.In the evolution of Gas Polyethylene pipeline network construction, often can run into existing Gas Polyethylene relocation of services changes its course, some areas pipeline is abolished, the various situations such as embedding threeway on original pipeline, if take original operation technique of stopping the supple of gas or steam that main valve or polyethylene flattening instrument are died of closing, to large size user be caused to the long-time impact of interrupting of air feed, and bring direct economic loss, in addition, use polyethylene pipe flattening instrument to die, to being greater than the middle pressure pipe of 200mm and being greater than the low pressure pipeline of 63mm, common every side needs two groups to flatten instrument, between flattening instrument and flattening instrument, and need certain distance between flattening instrument and polyethylene weld bond, therefore traditional band crimping branch technique needs a large amount of man power and materials, and need very large working space, adopt the operation of dying of polyethylene flattening instrument to cause damage to line for polyethylene gas pipes simultaneously.
At present, existing line for polyethylene gas pipes not stopping transportation plugging holes technology be not still well positioned to meet the specific (special) requirements of pressure piping installation license; Because the distinctive not garden of polyethylene pipe degree impact, particularly in-service line for polyethylene gas pipes are after long-time running, pipeline Bu garden degree increases, and causes in stopping transportation perforate operation, not being difficult to realize effective shutoff at existing line for polyethylene gas pipes simultaneously; And in not stopping transportation plugging holes operation process with pressure, requirement to the perforate operation turbidity test of pipeline reach noresidue, without blanking, avoid follow-up shutoff work surface to cause the tightly impact of shutoff, perforate residue also will pollute for whole pipeline, cause the fault such as not smooth of pipe network operation.
Summary of the invention
The object of the present invention is to provide not stopping transportation plugging holes system of a kind of pipeline, this system can meet the requirement of pressure piping installation license, realizes effective shutoff, and has improved the turbidity test of perforate operation.
Goal of the invention of the present invention is achieved by the following technical solution:
Pipeline is a stopping transportation plugging holes system not, comprises support, pipeline fourth contact device and pipeline with pressure cleaning apparatus, and described support is the saddle type support of steel material, is connected with stopping transportation plugging holes operation pipeline not; Described pipeline fourth contact device integral body is to be made by aluminum alloy material, is arranged on the position of the not required perforate of stopping transportation plugging holes operation pipeline; Described pipeline with pressure cleaning apparatus is arranged on the saddle type support of described steel material.
Further, the saddle type support of described steel material is to be connected with stopping transportation plugging holes operation pipeline not by seal ring.
Further, described pipeline fourth contact device is comprised of upper lower slips and bolt.
Further, described pipeline with pressure cleaning apparatus comprises scraping board and the cleaning skirt of cleaning pipe and lower end thereof.
The saddle type supporting structure intensity of above-mentioned steel material is high, it is reliable to connect, pressure-proof and impact resistance is good, and material high and low temperature resistance is good, is better than line for polyethylene gas pipes material aspect structural strength; Between saddle type support and perforate pipeline, adopt seal ring, sealing is tight, and shock-resistant, corrosion-resistant, the life-span is long, and connection flexibility and reliability has simple to operately, and preparation of construction is few, easy operation, the advantage of reliable performance.Described pipeline fourth contact device adopts aluminum alloy casting, by upper lower slips and high-strength bolt, formed, structural strength is high, lightweight, be convenient to disassembling section, can any direction flattening deformation be no more than to the circularity of 20% old spool road fourth contact to 98% in 60 minutes, while meeting shutoff for the requirement of inner-walls of duct circularity.And fourth contact speed is fast, and fourth contact is effective, in fourth contact process, pipeline is not carried out to destructive procedure.Described pipeline with pressure cleaning apparatus, adopt the scraping of flexible cleaning skirt thoroughly to clean the post-job tube wall residue of perforate, and utilize and manage diffusing of inner high voltage gas, residual bore operation polyethylene chip blanking thing is taken out of with the discharge of pressurized gas, thoroughly reached the discharge completely to residue in pipeline.
Another object of the present invention is to provide the not technological method of stopping transportation plugging holes system of a kind of pipeline, it is characterized in that, comprises following process step:
1) determine the pipeline position need to carry out plugging holes operation, carry out pipeline excavation before non-stop plugging operation and the cleaning work of pipeline surface;
2) carry out the fourth contact operation of pipeline, two fourth contact devices are installed in parallel on the position of required perforate, tighten locking nut until turn motionless till, after spending 30 minutes, carry out once more fastening, to turn motionless till, after this every 10 minutes once fastening, until be tightened onto stop collar position, within about 60 minutes, completes fourth contact;
3) carry out saddle type support and frame installation exercise, first remove a fourth contact slips group of fourth contact operation, and plugging device saddle type support is arranged on to the position of removing, screw nut between the upper and lower of saddle type support until reach stop collar position and twist motionless, then frame is arranged on the land of saddle type support, finally by the pinch tube locking of frame both sides;
4) the fourth contact device slips group shifting out is arranged on to frame near saddle type bracket side, and carries out fastening until be tightened onto stop collar;
5) carry out perforate operation, first the selected operation boring cutter size for the treatment of, and be arranged on perforator, the blade of boring cutter is smeared to a small amount of lubricant oil, unclamp and land between locking locknut, open frame gate valve to enable possition, perforator is put into frame, and drilling rod main shaft is transferred to blade drill and countersink and PE pipe outer wall 2-3cm position, bolt between locking land and upper joint sleeve cylinder, after confirmation, screw and land between locking locknut, then clockwise rotate boring cutter feeding handle, slow decreasing carries out perforate operation; After dropping to graduation line, main shaft shows that perforate completes, now the pressure gauge show value on frame upper joint sleeve cylinder is current pipeline predetermined pressure, reversion feeding handle, until screw thread is outwarded winding, now unclamp the locking locknut on land, slowly promote perforate main shaft to more than gate valve, close rapidly gate valve, unclamp the bolt between perforator land and upper joint sleeve cylinder, take out perforator;
6) carry out pipe-line purging operation, check cleaning apparatus, and cleaning pipe ball valve is rotated in closed position, bleeding device is inserted to upper joint sleeve cylinder, bolt between locking land and upper joint sleeve cylinder, after confirmation, opening gate valve balance bleeding device is designated as after pipeline predetermined pressure until upper joint sleeve cylinder pressure, rotate gate valve to enable possition, then hold and diffuse operating grip and be depressed into extreme lower position, and rotation scraping 3-5 circle, then mention 3-5cm and open exhaust stack ball valve, diffuse until do not have foreign material discharge to stop ball valve rotating to closed position, mention exhaust stack to the above position of gate valve, rapid closing gate valve, unclamp the bolt between cleaning apparatus and coupling sleeve, take out bleeding device,
7) carry out shutoff operation, before operation, check the integrity of plugging leather cup and connect whether flexibly, whether the plane after leather cup launches is smooth, check after confirmation, blocking machine leather cup is shunk and inserted in upper joint sleeve cylinder, and whether the direction of confirming leather cup aligns with frame marking line, then lock the bolt between land and upper joint sleeve cylinder, after confirmation, opening gate valve balance bleeding device is designated as after pipeline predetermined pressure until upper joint sleeve cylinder pressure, rotate gate valve to enable possition, slowly shutoff main shaft is transferred to entering swivel nut, then keep major axes orientation constant, rotation swivel nut slowly makes main shaft decline, enter in PE pipe and leather cup is launched completely, counterrotating 1-2 circle, at this moment the pressure show value of upper joint sleeve cylinder is exactly the pipeline pressure value after shutoff, now shutoff operation completes,
8) repeating step 1-7 carries out the plugging holes operation of downstream position;
9) complete after the construction operation of shutoff region, from down, swim over to upstream detaching device, backfill operation.
Pipeline provided by the invention not stopping transportation plugging holes system has adapted to the not requirement of stopping transportation plugging holes of line for polyethylene gas pipes, and the saddle type supporting structure intensity of steel material is high, it is reliable to connect, pressure-proof and impact resistance is good; Meanwhile, adopt the pipeline fourth contact device of integral Al-alloy, while having met line for polyethylene gas pipes shutoff for the specific (special) requirements of inner-walls of duct out of roundness; Pipeline with pressure cleaning apparatus, adopts the drive of high pressure draught and the cleaning work mode of the scraping of flexible cleaning skirt use, cleans clean noresidue, guarantees the not reliability of stopping transportation plugging holes.This system has well met the not requirement of stopping transportation plugging holes operation of line for polyethylene gas pipes, simple in structure, convenient and practical.
Accompanying drawing explanation
Fig. 1 is not stopping transportation plugging holes system architecture schematic diagram of pipeline of the present invention;
Fig. 2 is fourth contact apparatus structural representation of the present invention;
Fig. 3 is saddle type supporting structure schematic diagram of the present invention;
Fig. 4 is perforate operation schematic diagram of the present invention;
Fig. 5 is cleaning work schematic diagram of the present invention;
Fig. 6 is shutoff operation schematic diagram of the present invention;
Fig. 7 is lower obstruction operation schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, preferred forms of the present invention is further described in detail.
As shown in Fig. 1-7, a kind of pipeline is stopping transportation plugging holes system not, comprises support 1, pipeline fourth contact device 2 and pipeline with pressure cleaning apparatus 3, and support 1 is the saddle type support 1 of steel material, is connected with stopping transportation plugging holes operation pipeline 4 not; Pipeline fourth contact device 2 integral body are to be made by aluminum alloy material, are arranged on the position of not stopping transportation plugging holes operation pipeline 4 required perforates; Pipeline with pressure cleaning apparatus 3 with pressure is arranged on the saddle type support 1 of described steel material.The saddle type support 1 of steel material is to be connected with stopping transportation plugging holes operation pipeline 4 not by seal ring 5.Pipeline fourth contact device 2 is comprised of upper lower slips 6 and bolt 7.Pipeline with pressure cleaning apparatus 3 comprises scraping board 9 and the cleaning skirt 10 of cleaning pipe 8 and lower end thereof.
Pipeline is a technological method for stopping transportation plugging holes system not, comprises following process step:
1, determine the pipeline position need to carry out plugging holes operation, carry out pipeline excavation before non-stop plugging operation and the cleaning work of pipeline surface.
2, carry out the fourth contact operation of pipeline, two fourth contact devices 2 are installed in parallel on the position of required perforate, tighten locking nut until turn motionless till, after spending 30 minutes, carry out once more fastening, to turn motionless till, after this every 10 minutes once fastening, until be tightened onto stop collar position, within about 60 minutes, completes fourth contact.
3, carry out saddle type support and frame installation exercise, first remove a fourth contact slips group of fourth contact operation, and plugging device saddle type support 1 is arranged on to the position of removing, the installation situation of inspection saddle type support 1 inner seal ring 5 and whether intact, screw nut between the upper and lower of saddle type support 1 until reach stop collar position and twist motionless, then frame is arranged on the land 18 of saddle type support 1, check the integrity degree of land 18 middle asbestos seal pads, finally by the pinch tube locking of frame both sides.
4, the fourth contact device slips group shifting out is arranged on to frame near a side of saddle type support 1, and carries out fastening until be tightened onto stop collar.
5, carry out perforate operation, first selected operation boring cutter 15 sizes for the treatment of, and be arranged on perforator 12, the blade of boring cutter 15 is smeared to a small amount of lubricant oil, unclamp and land 18 between locking locknut, open frame gate valve 14 to enable possition, perforator 12 is put into frame, and drilling rod main shaft is transferred to blade drill and countersink and PE pipe outer wall there is 2.5cm position, bolt between locking land 18 and upper joint sleeve cylinder 13, rotatable handle 11 after confirming, screw and land 18 between locking locknut, then clockwise rotate boring cutter 15 feeding handles 19, slow decreasing carries out perforate operation, perforate dynamics arrives heavy and then light on the lenient side, when main shaft drops to after graduation line, show that perforate completes.Now the pressure gauge show value on frame upper joint sleeve cylinder is current pipeline predetermined pressure.Reversion feeding handle 19, main shaft slowly rises, until screw thread is outwarded winding.Now unclamp the locking locknut on land 18, slowly promote perforate main shaft till gate valve more than 14.Closing gate valve 14, unclamps the bolt between perforator land 18 and upper joint sleeve cylinder 13 rapidly, takes out perforator 12.
6, carry out pipe-line purging operation, check cleaning apparatus, and cleaning pipe ball valve 16 is rotated in closed position.Bleeding device is inserted to upper joint sleeve cylinder 13, the bolt between locking land 18 and upper joint sleeve cylinder 13.After confirmation, open gate valve balance bleeding device and be designated as after pipeline predetermined pressure until upper joint sleeve cylinder 13 pressure, rotate gate valve 14 to enable possition.Then hold and diffuse operating grip 17 and be depressed into extreme lower position, and rotation scraping 4 circles, then mention a little 4cm and open exhaust stack ball valve, diffuse until do not have foreign material to discharge to stop ball valve rotating to closed position.Mention exhaust stack to the above position of gate valve 14, rapidly closing gate valve.Unclamp the bolt between cleaning apparatus and coupling sleeve, take out bleeding device.
7, carry out shutoff operation, check whether the integrity of plugging leather cup 20 and connection be flexible before operation, whether the plane after leather cup 20 launches is smooth.Check after confirmation, blocking machine leather cup 20 is shunk and inserted in upper joint sleeve cylinders 13, and confirm whether the direction of leather cup 20 aligns with frame marking line.Then lock the bolt between land 18 and upper joint sleeve cylinder 13.After confirmation, open gate valve balance bleeding device and be designated as after pipeline predetermined pressure until upper joint sleeve cylinder pressure, rotate gate valve 14 to enable possition.Slowly shutoff main shaft is transferred to entering swivel nut, in decentralization process, keep calibrating main direction consistent with frame graduation line direction.Then keep major axes orientation constant, rotation swivel nut slowly makes main shaft decline, and enters in PE pipe and leather cup 20 is launched completely.When main shaft drops to the position that can not decline again, be that leather cup 20 launches completely, counterrotating 2 circles.At this moment the pressure show value of upper joint sleeve cylinder 13 is exactly the pipeline pressure value after shutoff, and now shutoff operation completes.
8, repeating step 1-7 carries out the plugging holes operation of downstream position.
9, complete after the construction operation of shutoff region, first carry out the dismounting of downstream blocking device, the feeding handle of counterrotating blocking machine, slowly packs up plugging leather cup, and it is brisk rapidly that in the process rising at main shaft, appropriate left-right rotation main shaft makes the recovery of main shaft.When main shaft revolves, exit after thread bush, mention rapidly main shaft and more than 14, get final product rapid closing gate valve 14 to gate valve, unclamp the bolt between blocking machine and coupling sleeve, take out blocking machine.
10, carry out lower obstruction operation, check that whether the seal ring of obstruction 22 is intact before operation, whether the pliers of lower stifled machine is manually done flexible.After confirming to check, obstruction 22 is put into pliers hand 21 clamping.Then the lower stifled machine transplanting of rice is entered in upper joint sleeve cylinder 13, then the bolt between the lower stifled machine land 18 of locking and upper joint sleeve cylinder 13.After confirmation, open gate valve balance bleeding device and be designated as after pipeline predetermined pressure until upper joint sleeve cylinder pressure, rotate gate valve 14 to enable possition.Under depress stifled cleaner handgrip and slowly make main shaft transfer to saddle type support thread bush position, screw clockwise handle 2 circles, then mention a little main shaft, if main shaft is unable to lift precession thread bush, slowly clockwise precession is motionless to revolving, and main shaft drops to graduation line position, lower plug successfully.Unscrew pliers hand 21 handwheels, until throw off completely.Mention lower plug owner axle to the above position of gate valve 14, closing gate valve 14, unclamps the bolt between lower stifled machine land 18 and upper joint sleeve cylinder 13, removes the operation of frame under taking out after stifled machine.
11, the lower plug operation of upstream, with reference to step 9, is closed UNICOM's ball valve and is removed not stopping transportation flexible pipe.
12,, after upstream and downstream shutoff frame is removed, saddle type support 1 sealing protecting cover is installed, and by bolt-locking, i.e. complete operation operation, prepares backfill operation.
Pipeline of the present invention is stopping transportation plugging holes system not, because it has used pipeline fourth contact device and the pipeline with pressure cleaning apparatus of steel material saddle type support, integral Al-alloy, structural strength is high, connection is reliable, pressure-proof and impact resistance is good, adapt to the not specific (special) requirements of stopping transportation plugging holes of line for polyethylene gas pipes, guaranteed the not safety and reliability of stopping transportation plugging holes of line for polyethylene gas pipes.
It should be noted that, foregoing is not the enumerating of preferred forms of stopping transportation plugging holes system equipment device of a kind of line for polyethylene gas pipes based on steel saddle type support of the present invention, the part of wherein not describing in detail to the greatest extent, is construed as with the general fashion of the art and is implemented.Meanwhile, for one of ordinary skill in the art, equivalent transformation and the modification within not departing from spiritual category of the present invention, the present invention done, all by within falling into the protection domain of claim of the present invention.
Claims (5)
1. a pipeline stopping transportation plugging holes system not, comprises support, pipeline fourth contact device and pipeline with pressure cleaning apparatus, it is characterized in that: described support is the saddle type support of steel material, is connected with stopping transportation plugging holes operation pipeline not; Described pipeline fourth contact device integral body is to be made by aluminum alloy material, is arranged on the position of the not required perforate of stopping transportation plugging holes operation pipeline; Described pipeline with pressure cleaning apparatus is arranged on the saddle type support of described steel material.
2. pipeline as claimed in claim 1 stopping transportation plugging holes system not, is characterized in that: the saddle type support of described steel material is to be connected with stopping transportation plugging holes operation pipeline not by seal ring.
3. pipeline as claimed in claim 1 stopping transportation plugging holes system not, is characterized in that: described pipeline fourth contact device is comprised of upper lower slips and bolt.
4. pipeline as claimed in claim 1 stopping transportation plugging holes system not, is characterized in that: described pipeline with pressure cleaning apparatus comprises scraping board and the cleaning skirt of cleaning pipe and lower end thereof.
5. the pipeline as claimed in claim 1 technological method of stopping transportation plugging holes system not, is characterized in that, comprises following process step:
1) determine the pipeline position need to carry out plugging holes operation, carry out pipeline excavation before non-stop plugging operation and the cleaning work of pipeline surface;
2) carry out the fourth contact operation of pipeline, two fourth contact devices are installed in parallel on the position of required perforate, tighten locking nut until turn motionless till, after spending 30 minutes, carry out once more fastening, to turn motionless till, after this every 10 minutes once fastening, until be tightened onto stop collar position, within about 60 minutes, can complete fourth contact;
3) carry out saddle type support and frame installation exercise, first remove a fourth contact slips group of fourth contact operation, and plugging device saddle type support is arranged on to the position of removing, screw nut between the upper and lower of saddle type support until reach stop collar position and twist motionless, then frame is arranged on the land of saddle type support, finally by the pinch tube locking of frame both sides;
4) the fourth contact device slips group shifting out is arranged on to frame near saddle type bracket side, and carries out fastening until be tightened onto stop collar;
5) carry out perforate operation, first the selected operation boring cutter size for the treatment of, and be arranged on perforator, the blade of boring cutter is smeared to a small amount of lubricant oil, unclamp and land between locking locknut, open frame gate valve to enable possition, perforator is put into frame, and drilling rod main shaft is transferred to blade drill and countersink and PE pipe outer wall 2-3cm position, bolt between locking land and upper joint sleeve cylinder, after confirmation, screw and land between locking locknut, then clockwise rotate boring cutter feeding handle, slow decreasing carries out perforate operation; After dropping to graduation line, main shaft shows that perforate completes, now the pressure gauge show value on frame upper joint sleeve cylinder is current pipeline predetermined pressure, reversion feeding handle, until screw thread is outwarded winding, now unclamp the locking locknut on land, slowly promote perforate main shaft to more than gate valve, close rapidly gate valve, unclamp the bolt between perforator land and upper joint sleeve cylinder, take out perforator;
6) carry out pipe-line purging operation, check cleaning apparatus, and cleaning pipe ball valve is rotated in closed position, bleeding device is inserted to upper joint sleeve cylinder, bolt between locking land and upper joint sleeve cylinder, after confirmation, opening gate valve balance bleeding device is designated as after pipeline predetermined pressure until upper joint sleeve cylinder pressure, rotate gate valve to enable possition, then hold and diffuse operating grip and be depressed into extreme lower position, and rotation scraping 3-5 circle, then mention 3-5cm and open exhaust stack ball valve, diffuse until do not have foreign material discharge to stop, ball valve is rotated to closed position, mention exhaust stack to the above position of gate valve, rapid closing gate valve, unclamp the bolt between cleaning apparatus and coupling sleeve, take out bleeding device,
7) carry out shutoff operation, before operation, check the integrity of plugging leather cup and connect whether flexibly, whether the plane after leather cup launches is smooth, check after confirmation, blocking machine leather cup is shunk and inserted in upper joint sleeve cylinder, and whether the direction of confirming leather cup aligns with frame marking line, then lock the bolt between land and upper joint sleeve cylinder, after confirmation, opening gate valve balance bleeding device is designated as after pipeline predetermined pressure until upper joint sleeve cylinder pressure, rotate gate valve to enable possition, slowly shutoff main shaft is transferred to entering swivel nut, then keep major axes orientation constant, rotation swivel nut slowly makes main shaft decline, enter in PE pipe and leather cup is launched completely, counterrotating 1-2 circle, at this moment the pressure show value of upper joint sleeve cylinder is exactly the pipeline pressure value after shutoff, now shutoff operation completes,
8) repeating step 1-7 carries out the plugging holes operation of downstream position;
9) complete after the construction operation of shutoff region, from down, swim over to upstream detaching device, backfill operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310680994.1A CN103629470A (en) | 2013-12-12 | 2013-12-12 | Pipeline nonstop-transmission holing and plugging system and process method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310680994.1A CN103629470A (en) | 2013-12-12 | 2013-12-12 | Pipeline nonstop-transmission holing and plugging system and process method thereof |
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| CN103912758A (en) * | 2014-04-22 | 2014-07-09 | 钊田 | High-performance online pipeline plugging device and plugging method thereof |
| CN105736894A (en) * | 2016-04-25 | 2016-07-06 | 青岛理工大学 | Hydraulic quick plugging device for offshore platform high-pressure process pipeline |
| CN105987253A (en) * | 2015-01-29 | 2016-10-05 | 胡炎兴 | Oil-gas pipeline blocking system and method |
| CN106112518A (en) * | 2016-08-18 | 2016-11-16 | 德科隆（无锡）流体控制有限公司 | Pipeline increases valve or the installation method of equipment online and installs accessory |
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| CN106764190A (en) * | 2016-12-29 | 2017-05-31 | 武汉理工大学 | A kind of combination unit that branch pipe is installed for conveyance conduit with pressure |
| CN108544059A (en) * | 2018-04-20 | 2018-09-18 | 邳州中燃城市燃气发展有限公司 | A kind of method of the in-service welding of gas pipeline |
| CN110360381A (en) * | 2019-06-26 | 2019-10-22 | 山东科技大学 | Emergency drainage exempts from termination of pumping pipeline continued access equipment and its application method |
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| CN113597526A (en) * | 2019-03-07 | 2021-11-02 | Tdw特拉华有限公司 | Polyethylene pipe service system comprising quick connection means for polyethylene pipe perforating, plugging and completion operations |
| CN114263805A (en) * | 2021-12-24 | 2022-04-01 | 新疆润霖新能源技术有限公司 | Device and method for blocking pipeline under pressure without stopping fire during non-stop transportation |
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