CN107178674B - Pipeline combines plugging device and repair method - Google Patents
Pipeline combines plugging device and repair method Download PDFInfo
- Publication number
- CN107178674B CN107178674B CN201710531072.2A CN201710531072A CN107178674B CN 107178674 B CN107178674 B CN 107178674B CN 201710531072 A CN201710531072 A CN 201710531072A CN 107178674 B CN107178674 B CN 107178674B
- Authority
- CN
- China
- Prior art keywords
- closure
- plate
- screw rod
- inner panel
- interior
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- F16L55/11—Plugs
- F16L55/1108—Plugs fixed by screwing or by means of a screw-threaded ring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- F16L55/11—Plugs
- F16L55/1141—Plugs the plug being made of elastic material
Abstract
The present invention relates to duct closing type device and method for maintaining, the interior closure plate screw rod part of plugging device includes interior closure inner panel and screw rod, one cavity casing being set in outside screw rod sequentially passes through closure outside plate, outer closure inner panel, outer closure outside plate and covering and plugs pipe fitting backing plate, interior plugging plate outside plate and outer plugging plate inner panel are fixedly connected with cavity casing, interior closure outside plate, outer closure inner panel and inner wall of the pipe form enclosure space, it is communicated with connecting tube with the enclosure space, connecting tube connects nitrogen replaceable equipment, pressure gauge or flammable explosive gas detector.Above-mentioned apparatus is overhauled in the maintenance for being used for in-service inflammable and explosive pipeline after the assembly is completed, can effectively improve inflammable and explosive pipe plugging tightness and Welding Safety.
Description
Technical field
The present invention relates to inflammable and explosive welding procedure technical field, specifically a kind of in-service inflammable and explosive pipeline combination is blocked
Device and the method for maintenance.
Background technique
With China's coal chemical industry, the tremendous development of petrochemical industry and technological progress, high temperature and pressure, inflammable and explosive pipeline, disposably
The isolating problem of welded pipe line equipment room is more prominent, especially technological transformation project and factory repair pipeline in normal course of operation,
Often because production and living need to overhaul, replace, relocating, increasing branch etc. in the pipeline in being transformed flammable explosive gas to
Pipeline welding brings the security risks such as very big fire explosion, while also requiring more financial resources, material resources, manpower and time
Investment.
For by the railway station Long Hu of Yuci in 2011, railway diesel pipeline changes road, original pipeline carries out cutting off replacement pipe
Road, pipe diameter is Φ 168, and because diesel pipeline is connect with storage tank joint weld, needed to change pipeline and diesel fuel tank are welded to connect,
In tank and the interior diesel oil of pipe has discharged, but Residual oil clears up difficulty in tank and in pipe, and disposal costs are high, duration anxiety, furthermore diesel oil
Flash-point is lower, construction welding dangerous.
Current construction method is to stop transport using by a whole set of pipeline and device systems, clear to system-wide Residual oil etc.
Reason is welded after carrying out nitrogen displacement after rinsing, or at the pipeline operations before and after flange increase blind plate, and managed at this
Road carries out nitrogen displacement and cleaning, but the pipeline having, in order to guarantee leakproofness, the flanged joint of pipe-line system is less, also needs
Disconnected longer pipe road carries out displacement cleaning (and the more difficult cleaning of certain media or presence residual), and not only long construction period, also causes
The wasting of resources and environmental pollution.Existing duct closing type device and method need to be customized, and by tube wall smoothness influenced compared with
Greatly, pressure-bearing and sealing performance are bad, and the blowing pressure is not high, and radial compression power is not high, easily leak, and temperature influences when welding
It is larger, it is easily broken, no insurance prior-warning device, security risk easily occurs for when welding.Other tubular service closure not only need
Profession customization, and the device is complicated.Field pipework specification is more, and customization trouble, complicated for operation, construction period is longer, and welds
For inflammable and explosive pipeline without leakage monitoring system, risk is larger.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of pipeline combination plugging device and repair methods, at least up to
It improves inflammable and explosive pipe plugging tightness and ensures the purpose of Welding Safety.
In order to solve the above technical problems, according to an aspect of the present invention, a kind of group of in-service inflammable and explosive pipeline is provided
Plugging device is closed, including interior closure plate screw rod part, double closure plate cavity parts and covering plug pipe fitting,
The interior closure plate screw rod part includes interior closure inner panel and screw rod, and screw head is fixedly connected in interior closure inner panel
The heart, screw rod tail are equipped with fixed part；
Double closure plate cavity parts include that interior closure outside plate, outer closure inner panel and cavity casing, the covering plug
Pipe fitting includes that outer closure outside plate, outer tube sleeve and covering plug pipe fitting backing plate,
Cavity casing is set in outside screw rod, and interior closure outside plate, outer closure inner panel, outer closure outside plate and covering plug pipe fitting
Backing plate center is provided with through-hole, and cavity casing sequentially passes through above-mentioned interior closure outside plate, outer closure inner panel, outer closure outside plate, wherein
Interior plugging plate outside plate and outer plugging plate inner panel are fixedly connected with cavity casing, and outer plugging plate outside plate and cavity shell clearance cooperate；
The cavity casing is fixedly connected with interior closure outside plate close to screw head one end, in interior closure outside plate and interior closure
It is equipped with the first rubber gasket for being set in screw rod between plate, is equipped between outer closure inner panel and outer closure outside plate and is set in cavity
Second rubber gasket of casing,
Outer tube sleeve both ends plug pipe fitting backing plate with outer closure outside plate and covering respectively and connect and be set in cavity jacket exterior,
The cavity casing other end and covering plug the first feed nut for being equipped between pipe fitting backing plate and connecting with screw flight, and covering plugs
The second feed nut connecting with screw flight is equipped on the outside of pipe fitting backing plate,
Interior closure outside plate, outer closure inner panel and inner wall of the pipe form enclosure space, are communicated with connecting tube with the enclosure space.
Further, the connecting tube includes the first connecting tube and the second connecting tube, and any connecting tube includes that can connect
Inner cavity communicating pipe and extension tube attached, outer closure outside plate, outer closure inner panel, the second rubber gasket and covering plug on pipe fitting backing plate
It is provided with the through-hole across the inner cavity communicating pipe and extension tube attached.
Further, the interior closure inner panel, interior closure outside plate, outer closure inner panel and outer closure outside plate are all made of circle
Boss structure, first rubber gasket and the second rubber gasket are placed between the boss.
Further, the screw rod tail fixed part is the Corner Strapped head for spanner mounting board.
According to another aspect of the present invention, a kind of tubular service method is provided, using above-described in-service inflammable and explosive
Pipeline maintenance apparatus for examination and repair, comprising steps of
(1) it first extracts or turns off oil plant in storage tank and pipeline out valve, cut off the pipeline to be replaced, and it is residual to clear up pipeline opening
Oil and residue,
(2) interior closure plate screw rod part is placed in pipeline, plate end face is vertical with pipeline longitudinal section in interior closure, screw rod and pipeline
It is axial parallel, the first rubber gasket and double closure plate cavity parts are sequentially passed through into screw rod, until envelope in the contact of the first rubber gasket
When stifled inner panel, with tool standing screw tail portion fixed part, make the first rubber gasket extrusion expansion by twisting the first feed nut
It is anchored on inner wall of the pipe, first layer, which blocks, to be completed；
(3) successively by the second rubber gasket, outer closure outside plate, outer tube and covering plug pipe fitting backing plate across screw rod and
Cavity casing, until, with tool standing screw tail portion fixed part, passing through when blocking inner panel outside the contact of the second rubber gasket and twisting second
Feed nut makes the second rubber pad extrusion expansion be anchored on inner wall of the pipe, and assembles two connecting tubes, and the second layer, which blocks, to be completed；
(4) an extension tube attached connection nitrogen cylinder nitrogen displacement is carried out after the completion of nitrogen displacement to connect another extension tube attached
Pressure gauge or flammable explosive gas detector are connect, for detecting whether having leakage or whether having flammable explosive gas residual, is confirmed
After safety, start weld job.
Further, in step (1), add water cooling or water knife with cutting machine at a slow speed or cutting ring cutter adds water at a slow speed
Cooling is cut off.
Further, in step (4), when starting weld job, absorbent cloth and cooling of watering are laid on outside in pipeline,
Pipe temperature is monitored with temperature-measuring gun, thermocouple, temperature is excessively high or gas detecting instrument alarm then stops operation.
The maintenance that apparatus of the present invention are suitable for in-service inflammable and explosive pipeline is overhauled, and inflammable and explosive pipe plugging can be effectively improved
Tightness and Welding Safety, it is convenient to remove after use, simplifies construction procedure, reduces construction cost, improve safety, keeps away
Exempt from long pipeline and is welded to connect the cleaning and the displacement of extensive nitrogen of pipeline, the pipe being welded to connect with tank body or equipment with equipment
The repair welds of relocating of road system avoid Residual oil cleaning it is unclean caused by weld risk.
Detailed description of the invention
Fig. 1 is interior closure screw rod part.
Fig. 2 is the schematic diagram assembled after double closure plate cavity parts and the first rubber gasket.
Fig. 3 is the schematic diagram assembled after the first feeding bolt.
Fig. 4 is to assemble outer lug boss to block the schematic diagram after sleeve part and the second heat resistant rubber gasket
Fig. 5 is the schematic diagram of plugging device of the present invention after the assembly is completed.
Fig. 6 apparatus of the present invention are passed through piping schematic.
In figure, inner panel is blocked in 1-, 2- screw rod, 3- fixed part, 4- is interior to block outside plate, and inner panel, 6- cavity set are blocked outside 5-
Pipe, 7- block outside plate, 8- outer tube sleeve outside, and 9- covering plugs pipe fitting backing plate, the first rubber gasket of 10-, the second rubber seal of 11-
Pad, the first feed nut of 12-, the second feed nut of 13-, the inner cavity 14- communicating pipe, 15- extension tube attached.
Specific embodiment
For the problem that existing duct closing type device and method pressure-bearing and poor sealing performance, easily leak.This hair
There is provided in a kind of bright typical embodiment pipeline combination plugging device, including interior closure plate screw rod part, double closure plate cavity parts and
Covering plugs pipe fitting.
With reference to Fig. 1, the interior closure plate screw rod part includes interior closure inner panel 1 and screw rod 2, and 2 head of screw rod is fixedly connected on
Interior 1 center of closure inner panel, 2 tail portion of screw rod are equipped with fixed part 3.The interior diameter for blocking inner panel 1 is slightly less than internal diameter of the pipeline；On screw rod 2
Screw thread preferably uses crin, to guarantee crushing strength, does not occur stripped thread wire drawing phenomenon；It is interior block inner panel 1 center with screw rod 2
The overlapping of end surface center, is fixed with 2 vertical welding of screw rod.
Double closure plate cavity parts include interior closure outside plate 4, outer closure inner panel 5 and cavity casing 6, the outer closure
Sleeve part includes that outer closure outside plate 7, outer tube sleeve 8 and covering plug pipe fitting backing plate 9.
6 internal diameter of cavity casing is slightly larger than screw rod 2, and with reference to Fig. 2, cavity casing 6 is set in outside screw rod 2, interior closure outside plate
4, outer closure inner panel 5, outer closure outside plate 7 and covering plug 9 center of pipe fitting backing plate and are provided with through-hole, and cavity casing 6 sequentially passes through
Above-mentioned interior closure outside plate 4, outer closure inner panel 5, outer closure outside plate 7, wherein interior plugging plate outside plate 4 and outer plugging plate inner panel 5 and chamber
Body casing 6 is fixedly connected, and interior closure outside plate 4 and outer 5 center opening diameter of closure inner panel are equal with 6 outer diameter of cavity casing, and wear
It crosses cavity casing 6 to be welded, outer plugging plate outside plate 7 and 6 clearance fit of cavity casing.
Wherein, with reference to Fig. 2 and Fig. 4, the cavity casing 6 is fixedly connected with interior closure outside plate close to 2 head one end of screw rod
4, interior block is equipped with the first rubber gasket 10 for being set in screw rod 2 between outside plate 4 and interior closure inner panel 1.Outer closure inner panel 5 with
It is outer to block the second rubber gasket 11 for being equipped between outside plate 7 and being set in cavity casing 6.The rubber gasket preferably uses resistance to
Hot rubber gasket, with heat resisting temperature height, good toughness, it is resistance to press, the rubber that thickness is big is cut out, cutting out edge should be neat, to protect
Extrusion expansion is demonstrate,proved in the tightness on tube wall.
With reference to Fig. 3 and Fig. 5,8 both ends of outer tube sleeve plug pipe fitting backing plate 9 with outer closure outside plate 7 and covering respectively and connect and cover
Outside cavity casing 6, cavity casing 6 close to the other end and covering of screw rod tail plug between pipe fitting backing plate 9 be equipped with
The first feed nut 12 that screw rod 2 is threadedly coupled, covering plug second for being equipped on the outside of pipe fitting backing plate 9 and being threadedly coupled with screw rod 2
Feed nut 13.8 internal diameter of outer tube is vertical with 6 center of cavity casing with axial centre, and can pass through cavity casing 6 and inner cavity
Communicating pipe is arranged.The diameter hole equal with 8 outer diameter of outer tube is opened at outer closure 7 center of outside plate, and 8 one end of outer tube is welded after passing through hole
Extremely.Covering plugs pipe fitting backing plate 9 as circle, and diameter is greater than 8 outer diameter of outer tube, and center opening diameter is slightly larger than 2 outer diameter of screw rod, other
Side is provided with aperture being pierced by for extension tube attached again.The screw thread of feed nut matches with 2 screw thread of screw rod, and nut outside dimension should be able to push up
Firmly cavity casing 6 and covering plug subject to the feeding of pipe fitting backing plate 9, but cannot influence being pierced by for extension tube attached.
With reference to Fig. 6, interior closure outside plate 4, outer closure inner panel 5 and inner wall of the pipe form enclosure space, connect with the enclosure space
It is connected with connecting tube.
Interior closure inner panel is vertical with screw rod to be fixed and interior plugging plate outside plate, outer plugging plate inner panel and outer plugging plate outside plate
It can guarantee the verticality with tube wall after assembly, above-mentioned component will not tilt, and guarantee that enclosure space has good leakproofness.
Corresponding component is fastened using feeding bolt substep, firstly, can reach the pretightning force of requirement, and two can be adjusted respectively
The pretightning force of a rubber gasket makes two rubber gaskets can reach seal request.Secondly as be axial force distribution, it can
Avoid the rubber gasket damage caused by rotating because of rubber gasket.
In addition, the heat that generates will cause the volatilization of the inflammable and explosive medium of gas expansion in welding, when gas expansion, can be produced
The raw thrust to each component.If two plates are not fixed, in the case where blocking pipe has gas pressure, overpressure can make closure
The axial displacement of component will cause pressure reaction inaccuracy, can not be constant by pressure to determine whether leakage.In embodiment
The interior closure outside plate and outer closure inner panel provided is to be fixedly connected, therefore axial displacement is not had between them with cavity casing,
It can avoid generating the above problem.
In a preferred embodiment, the connecting tube includes that the first connecting tube and the second connecting tube are appointed with reference to Fig. 5
One connecting tube includes attachable inner cavity communicating pipe 14 and extension tube attached 15, and outer closure outside plate 7, outer closure inner panel 5, the second rubber is close
Packing 11 and covering plug the through-hole being provided on pipe fitting backing plate across the inner cavity communicating pipe 14 and extension tube attached 15.Outer closure inner panel
Two through-holes are opened close to cavity casing 6 as far as possible on 5,2 inner cavity communicating pipes 14 outer closure inner panel 5 is passed through and is connected to interior closure outside plate 4
With the cavity of outer closure inner panel 5 and inner wall of the pipe composition, junction is welded guarantee cavity airtight.
In a preferred embodiment, the interior closure inner panel 1, interior closure outside plate 4, outer closure inner panel 5 and outer closure
Outside plate 7 is all made of round boss structure, and first rubber gasket 10 and the second rubber gasket 11 are placed in described convex
Between platform.Boss structure is conducive to squeeze above-mentioned rubber gasket to duct wall, forms excellent sealing.Interior closure inner panel 1
Boss face center is Chong Die with 2 end face center of screw rod, with 2 vertical welding of screw rod.Interior closure outside plate 4 and 5 boss of outer closure inner panel are equal
Towards outside cavity.
Preferably, with reference to Fig. 1, the 2 tail portion fixed part 3 of screw rod is the Corner Strapped head for spanner mounting board, is used for
The tools mounting board such as spanner, circumscribed circle are less than the outer diameter of screw rod 2.Four angle head fixing heads can be welded with screw rod tail, can also be in spiral shell
Corner Strapped head is directly processed on bar 2.
Pipeline combination plugging device of the present invention is when being used for tubular service, the extension tube attached connection nitrogen displacement
Device and pressure gauge or flammable explosive gas detector.Nitrogen replaceable equipment provides nitrogen to replace the intracorporal gas of chamber, and
Carry out the detection of pressure.Flammable explosive gas liquid-detecting is leaked for flammable explosive gas after the completion of the displacement of cavity nitrogen
Continue to monitor.Further, it is also possible to which tube body cooling device and temperature-detecting device is arranged, tube body cooling device is for reducing pipeline
Temperature in welding process monitors pipe temperature raised real-time condition when temperature monitoring device then is used to weld.
Apparatus of the present invention structure is simple, easy to operate, can effectively improve inflammable and explosive pipe plugging tightness and welding
It is safe, one layer of plugging device, which is also simplified to, in common pipe closure uses, it is reliable and practical to the Welding Safety of inflammable and explosive pipeline.
In the prior art, difficulty is tightly blocked in inflammable and explosive pipe plugging and welding, medium flash-point is low, welds risk
Greatly, long construction period, deficiency in economic performance, the security risk of no double insurance and monitoring facilities.
Based on this, the present invention also provides a kind of methods for carrying out tubular service using above pipeline combination plugging device, should
The typical embodiment of method, for repairing diesel pipeline, comprising steps of
(1) it first extracts or turns off oil plant in storage tank and pipeline out valve, cut off the pipeline to be replaced, and it is residual to clear up pipeline opening
Oil and residue.Preferably, in this step, add water cooling or water knife with cutting machine at a slow speed or cutting ring cutter adds water at a slow speed
Cooling is cut off.
The generation of spark and electrostatic and the raising of temperature are prevented, carries out the measure of destaticing when necessary, prevents diesel oil from leaking
Deng safety measure；Before closure, the cleanings such as the residue of Residual oil and inside pipe wall in pipeline opening 100mm-800mm are done as needed
Only, and with detergent clean out.
(2) interior closure plate screw rod part is placed in 100mm-800mm in pipeline, interior 1 end face of closure inner panel and pipeline longitudinal section are hung down
Directly, screw rod 2 is axial parallel (Fig. 1) with pipeline, and the first rubber gasket 10 and double closure plate cavity parts are sequentially passed through screw rod (figure
2), until when the first rubber gasket 10 contacts interior closure inner panel 1, with 2 tail portion fixed part 3 of tool standing screw, pass through stubborn first
Feed nut 12 is anchored on 10 extrusion expansion of the first rubber gasket inner wall of the pipe (Fig. 3), and first layer, which blocks, to be completed；
(3) Fig. 4 and Fig. 5 is referred to, successively plugs the second rubber gasket 11, outer closure outside plate 7, outer tube 8 and covering
Pipe fitting backing plate 9 passes through screw rod 2 and cavity casing 6, until being fixed when the second rubber gasket 11 contacts outer closure inner panel 5 with tool
2 tail portion fixed part 3 of screw rod makes 11 extrusion expansion of the second rubber pad be anchored on inner wall of the pipe by twisting the second feed nut 13, and
Two connecting tubes are assembled, the second layer, which blocks, to be completed；
(4) an extension tube attached connection nitrogen cylinder is subjected to nitrogen displacement, nitrogen cylinder outlet has a pressure gauge, displacement
When observe pressure change.After the completion of nitrogen displacement, another extension tube attached is connected into pressure gauge or flammable explosive gas detector, is used
In having detected whether to reveal or whether had a flammable explosive gas residual, after confirming safety, start weld job.
Nitrogen displacement is to replace the inflammable and explosive dielectric gas in closed cavity, and two pressure gauges are then in order to more quasi-
The stable accuracy of true reflection pressure value, it is easier to see whether to leak.Observation pressure can be according to pressure when nitrogen is replaced
Power judges that whether there is or not flammable explosive gas in displaced degree and cavity, it is often more important that nitrogen in cavity is kept after the completion of displacement
Atmospheric pressure, which is stablized to react in certain value, not to be revealed.
It, be to whether there is or not leakages to detect after nitrogen displacement.Pressure gauge and flammable explosive gas can be used only when detection
One of detector can also all be used with pressure gauge and flammable explosive gas detector.
In the case where pressure gauge is used only, after nitrogen displacement, an extension tube attached 15 is still connect with nitrogen cylinder, outside another
Adapter tube 15 connects pressure gauge, after reaching steady pressure value, closes nitrogen, pressure maintaining shows no leakage if not occurring being depressured.
Be used only flammable explosive gas detector in the case where, nitrogen displacement after, an extension tube attached 15 still with nitrogen cylinder
Connection, keeps the micro- opening of nitrogen cylinder, another extension tube attached 15 connects the inflammable quick-fried detector of easy gas, flammable explosive gas detection
Next step can be carried out if testing result shows no flammable explosive gas with miniature asepwirator pump on instrument, if testing result is aobvious
Show there is flammable explosive gas in closed cavity, then shows there is leakage or nitrogen displacement to be not thorough.
In the case where pressure gauge and flammable explosive gas detector all uses, after nitrogen displacement, an extension tube attached 15 is still
It is connect with nitrogen cylinder, another extension tube attached 15 connection pressure gauge, the extension tube attached after pressure stabilisation that will be switched off connecing pressure gauge, and will
The extension tube attached connect dynamic detection with flammable explosive gas detector and analyzes inflammable and explosive oil gas；After confirming safety, start to weld
Connect operation.
When starting weld job, absorbent cloth and cooling of watering are laid on outside in pipeline, with temperature-measuring gun, thermocouple to pipe
Channel temp is monitored, and temperature is excessively high or gas detecting instrument alarm then stops operation.
Apparatus of the present invention can carry out processing and fabricating using common used material in engineering, and it is convenient to remove after use, simplify construction
Step reduces construction cost, improves safety, avoid long pipeline and with equipment be welded to connect pipeline cleaning and greatly advise
The displacement of mould nitrogen, the repair welds of relocating for the pipe-line system being welded to connect with tank body or equipment avoid Residual oil cleaning and do not make completely
At welding risk, not only making material is simply common, and device is easy to make, and installs easy to operate, and it is convenient to remove, and also simplification is applied
Work process improves construction efficiency, reduces the security risk of inflammable and explosive pipeline welding, reduces construction cost.
Claims (7)
1. a kind of pipeline combines plugging device, it is characterised in that: plugged including interior closure plate screw rod part, double closure plate cavity parts and covering
Pipe fitting,
The interior closure plate screw rod part includes interior closure inner panel (1) and screw rod (2), and screw rod (2) head is fixedly connected on interior closure
Inner panel (1) center, screw rod (2) tail portion are equipped with fixed part (3)；
Double closure plate cavity parts include interior closure outside plate (4), outer closure inner panel (5) and cavity casing (6), the covering
Plugging pipe fitting includes that outer closure outside plate (7), outer tube sleeve (8) and covering plug pipe fitting backing plate (9),
It is external that cavity casing (6) is set in screw rod (2), interior closure outside plate (4), outer closure inner panel (5), outer closure outside plate (7) and
Covering plugs pipe fitting backing plate (9) center and is provided with through-hole, and cavity casing (6) sequentially passes through above-mentioned interior closure outside plate (4), outer closure
Inner panel (5), outer closure outside plate (7), wherein interior plugging plate outside plate (4) and outer plugging plate inner panel (5) and cavity casing (6) are fixed
Connection, outer plugging plate outside plate (7) and cavity casing (6) clearance fit；
The cavity casing (6) is fixedly connected with interior closures outside plate (4) close to screw rod (2) head one end, interior closure outside plate (4) and
It is interior to block the first rubber gasket (10) for being equipped between inner panel (1) and being set in screw rod (2), outer closure inner panel (5) and outer closure
The second rubber gasket (11) for being set in cavity casing (6) is equipped between outside plate (7),
Outer tube sleeve (8) both ends plug pipe fitting backing plate (9) with outer closure outside plate (7) and covering respectively and connect and be set in cavity casing
(6) external, cavity casing (6) other end plugs first for being equipped between pipe fitting backing plate (9) and being threadedly coupled with screw rod (2) with covering
Feed nut (12), covering plug the second feed nut (13) for being equipped on the outside of pipe fitting backing plate (9) and being threadedly coupled with screw rod (2),
Interior closure outside plate (4), outer closure inner panel (5) and inner wall of the pipe form enclosure space, are communicated with and connect with the enclosure space
Pipe.
2. pipeline according to claim 1 combines plugging device, it is characterised in that: the connecting tube includes the first connection
Pipe and the second connecting tube, any connecting tube includes attachable inner cavity communicating pipe (14) and extension tube attached (15), outer closure outside plate
(7), outer closure inner panel (5), the second rubber gasket (11) are plugged to be provided on pipe fitting backing plate with covering and be connected to across the inner cavity
Manage the through-hole of (14) and extension tube attached (15).
3. pipeline according to claim 2 combines plugging device, it is characterised in that: the interior closure inner panel (1), interior envelope
Stifled outside plate (4), outer closure inner panel (5) and outer closure outside plate (7) are all made of round boss structure, first rubber gasket
(10) it is placed between the boss with the second rubber gasket (11).
4. pipeline according to claim 3 combines plugging device, it is characterised in that: screw rod (2) tail portion fixed part
(3) it is Corner Strapped head for spanner mounting board.
5. a kind of tubular service method, it is characterised in that: block dress using the described in any item pipeline combinations of claim 2-4
It sets, comprising steps of
(1), it first extracts or turns off oil plant in storage tank and pipeline out valve, cut off the pipeline to be replaced, and clear up pipeline opening Residual oil
And residue,
(2), interior closure plate screw rod part is placed in pipeline, interior closure inner panel (1) end face is vertical with pipeline longitudinal section, screw rod (2) with
Pipeline is axially parallel, the first rubber gasket (10) and double closure plate cavity parts is sequentially passed through screw rod, until the first rubber gasket
(10) when blocking inner panel (1) in contact, with tool standing screw (2) tail portion fixed part (3), pass through stubborn first feed nut (12)
The first rubber gasket (10) extrusion expansion is set to be anchored on inner wall of the pipe, first layer, which blocks, to be completed；
(3), the second rubber gasket (11), outer closure outside plate (7), outer tube (8) and covering are successively plugged into pipe fitting backing plate (9)
Across screw rod (2) and cavity casing (6), until fixing spiral shell with tool when blocking inner panel (5) outside the second rubber gasket (11) contact
Bar (2) tail portion fixed part (3) is anchored on the second rubber pad (11) extrusion expansion in pipeline by twisting the second feed nut (13)
Wall, and two connecting tubes are assembled, the second layer, which blocks, to be completed；
(4), extension tube attached (15) connection nitrogen cylinder is subjected to nitrogen displacement, after the completion of nitrogen displacement, by another extension tube attached
Pressure gauge or flammable explosive gas detector are connected, for detecting whether having leakage or whether having flammable explosive gas residual, really
After recognizing safety, start weld job.
6. according to the method described in claim 5, it is characterized by: adding water cooling to be cut with cutting machine at a slow speed in step (1)
It removes.
7. according to the method described in claim 5, it is characterized by: in step (4), when starting weld job, inside and outside pipeline
Absorbent cloth and cooling of watering are laid on side, pipe temperature is monitored, and temperature is excessively high or gas detecting instrument alarm then stops
Operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710531072.2A CN107178674B (en) | 2017-07-03 | 2017-07-03 | Pipeline combines plugging device and repair method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710531072.2A CN107178674B (en) | 2017-07-03 | 2017-07-03 | Pipeline combines plugging device and repair method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107178674A CN107178674A (en) | 2017-09-19 |
| CN107178674B true CN107178674B (en) | 2019-07-30 |
Family
ID=59845060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710531072.2A Active CN107178674B (en) | 2017-07-03 | 2017-07-03 | Pipeline combines plugging device and repair method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107178674B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050340A (en) * | 2017-12-11 | 2018-05-18 | 中国海洋石油集团有限公司 | Pipeline plugging pig |
| CN109365949A (en) * | 2018-12-21 | 2019-02-22 | 中国电建集团核电工程有限公司 | Multi-pipeline copper pipe is brazed nitrogen charging protection against oxidation system |
| CN110107767A (en) * | 2019-05-27 | 2019-08-09 | 北京碧圣达优检测技术有限公司 | A kind of umbrella-type pipeline water blocking device |
| CN110700789B (en) * | 2019-11-12 | 2021-10-15 | 宋宝玉 | Oil field packer |
| CN114151724B (en) * | 2021-10-18 | 2023-04-25 | 深圳华安液化石油气有限公司 | Method for salvaging scattered matters in liquefied gas storage tank |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9101938D0 (en) * | 1991-01-29 | 1991-03-13 | British Gas Plc | A tool for blocking a portion of a pipe upstream of a bend |
| DE202005000521U1 (en) * | 2004-11-19 | 2005-03-24 | Schwalm Willi | Shut off device for pipe connected to sewer, comprises splayable unit inside elastic sealing part |
| CN201582526U (en) * | 2009-11-25 | 2010-09-15 | 王维平 | Marine pipe plug |
| CN202484517U (en) * | 2012-01-12 | 2012-10-10 | 中国海洋石油总公司 | Pipeline sealer |
| CN202884361U (en) * | 2012-10-29 | 2013-04-17 | 中国中化股份有限公司 | Pipeline plugging device |
| CN204805532U (en) * | 2015-05-27 | 2015-11-25 | 江阴市巨匠文化创意发展有限公司 | Body tip seal assembly |
-
2017
- 2017-07-03 CN CN201710531072.2A patent/CN107178674B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9101938D0 (en) * | 1991-01-29 | 1991-03-13 | British Gas Plc | A tool for blocking a portion of a pipe upstream of a bend |
| DE202005000521U1 (en) * | 2004-11-19 | 2005-03-24 | Schwalm Willi | Shut off device for pipe connected to sewer, comprises splayable unit inside elastic sealing part |
| CN201582526U (en) * | 2009-11-25 | 2010-09-15 | 王维平 | Marine pipe plug |
| CN202484517U (en) * | 2012-01-12 | 2012-10-10 | 中国海洋石油总公司 | Pipeline sealer |
| CN202884361U (en) * | 2012-10-29 | 2013-04-17 | 中国中化股份有限公司 | Pipeline plugging device |
| CN204805532U (en) * | 2015-05-27 | 2015-11-25 | 江阴市巨匠文化创意发展有限公司 | Body tip seal assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107178674A (en) | 2017-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107178674B (en) | Pipeline combines plugging device and repair method | |
| CN107401655A (en) | Metal pipe line defect recognition and no-welding method for maintaining | |
| CN102072406A (en) | Device and method for detecting product pipeline leakage condition | |
| CN109243639A (en) | Nuclear reactor steam generator heat-transfer pipe micro-crack amount of leakage experimental provision and method | |
| CN110345330A (en) | A kind of online leakage monitor of double-level-metal expansion joint and method | |
| CN110792866B (en) | Long-distance pipeline under-pressure plugging device and method | |
| CN206875034U (en) | The apparatus for examination and repair of in-service inflammable and explosive pipeline | |
| CN104897860A (en) | Novel expanding connection technology and assessment method | |
| CN203298885U (en) | Temperature-measurement and pressure-measurement data acquisition head | |
| CN104154375A (en) | Temperature measuring and pressure measuring data collection head for high pressure pipeline | |
| CN106402662B (en) | A kind of pipeline fluid leak detecting device | |
| CN207514460U (en) | A kind of generator bilayer for LNG surface units supplies tube-connecting part | |
| CN113623476A (en) | Pressure monitoring expansion joint | |
| CN110682236B (en) | Ice plug jacket device for metal surface sealing joint maintenance operation | |
| CN110542611A (en) | Equipment pressure test adapter tube and pressure test method | |
| CN214612586U (en) | Leakage-proof online plugging device for welding seam of water pipe and gas protective cap of cooling wall of blast furnace | |
| CN104154381A (en) | Open fire maintenance method for liquid ammonia pipeline or equipment | |
| CN204116199U (en) | A kind of device for evaluating metal composite pipe decay resistance | |
| CN216009963U (en) | Pressure monitoring expansion joint | |
| CN208187643U (en) | A kind of device for searching leak source for die casting assembly | |
| CN208565943U (en) | Reducer tee weld leakage fixture | |
| CN203297946U (en) | Novel temperature measurement and pressure measurement data collecting head for high-pressure pipeline | |
| CN111413157A (en) | Radioactive gas sampling device and sampling method thereof | |
| EA006924B1 (en) | Connectable chamber for porthole testing | |
| CN204805837U (en) | Connecting device is moulded to steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |