CN105889697A

CN105889697A - Method of leaked pipeline repairing method

Info

Publication number: CN105889697A
Application number: CN201610475195.4A
Authority: CN
Inventors: 杨越
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-26
Filing date: 2016-06-26
Publication date: 2016-08-24
Also published as: WO2018000534A1

Abstract

The invention provides a leaked pipeline repairing method. According to the leaked pipeline repairing method, a traditional bolt is removed first; flanges penetrate through a grooved stud; a groove extends from one end of the stud for an enough distance to a gap between pipeline flanges; a nut is mounted at the end, opposite to the groove, of the stud, and is screwed in for an enough distance, so that the groove is connected with the gap; a cap-shaped injection nut I is screwed on the grooved stud to match the flanges and enables a hole to sleeve an injection nut II to be aligned with the groove; then, the nut is screwed in to complete mounting; injection valve devices are mounted at one or a plurality of positions around the flanges; or each injection valve device comprises a stud which is used for defining a groove which extends to the exterior of the corresponding flange from the gap but is terminated at a relatively short position of the tail end of the stud; an injection nut III is in the form of a standard nut, is screwed into the stud for an enough distance to be in contact with the flanges, and enables a hole which extends and penetrates through the injection nut III to be aligned with a groove so as to complete mounting; the injection valve is connected to the injection nut II or the injection nut III; a valve rod is rotated to open the injection valve.

Description

The method repairing pipe leakage device

Technical field

The method that the present invention relates to repair pipe leakage, particularly relates to do not disturbing pipeline normal operation Under it is leaked the method repaired.

Background technology

China is in fluid container storage and pipeline transportation art at present, the fluid caused due to sudden factor Dielectric leakage accident happens occasionally.Due to the continuous burn into of pipeline pumped (conveying) medium wash away, temperature, vibration, Seasonal variations, geological transformation, the impact of the factor such as artificial, inevitably occur on some position of pipeline Seal failure problem, pressure medium leaks therewith, and as processed not in time, seal failure degree can expand, and lets out Leakage current amount can be multiplied, and causes enterprise's unplanned stopping production accident and more serious accident.

Common pipe leakage occurs at connecting portion, connecting portion refer to maintenance or change parts and The detachability arranged on pressure vessel or pipeline builds, and most common of which occurs the position of leakage to be method Blue.Flange seal is dependent on its connecting bolt and produces pretightning force, is reached by various solid pads or liquid packing To enough operating unit sealing loads, stoping and leaked by sealing fluid media (medium), belong to forced seal category, it is let out Leakage form mainly has three kinds: one owing to metal covering and gasket seal intersection can not coincide very well, " boundary to occur Face leak ", and the form of gasket seal and material unrelated；Second is fiber and the fibre of some gasket material Certain gap is had so that fluid media (medium) " is permeated by what these gaps produced under certain condition between dimension Leakage ", typically it is directly proportional to the operating pressure of fluid media (medium), with the physical property such as the viscosity of fluid media (medium) also There is relation；3rd is that the not good enough gasket seal caused of installation quality compresses excessive or seal pressure deficiency and occurs " destroyed leaking ".

Dynamic seal (packing) refers to exist under leaking medium pressure, temperature and flow condition, uses special technique means Carrying out a special kind of skill effectively sealed again, the method that current industrial circle is conventional has " agent injecting type on-line pressure sealant skill Art ", " adhering and sealing technology with pressure " and " welded seal technology with pressure ".Three kinds of Apis modes are respectively arranged with spy Point, remarkable in economical benefits, safe and reliable, stop a leak fast and there is good dismoutability, not leaked The restriction of medium physico-chemical property, it is not necessary to be equipped with specific purpose tool and equipment.But this dynamic seal (packing) needs to stop pipe Lineman could implement seal operation in the case of making, and affects the work efficiency of pipeline.

Summary of the invention

Therefore on the one hand the purpose of the present invention is to provide a kind of device repairing pipe leakage, including: pipeline, Pipeline is connected on pipe joint, and is passed through the flange on every pipeline by insertion bolt and twisted by nut The bolt connection that tight form to bolt is formed keeps together thus sealing pipeline connector；Multiple introduction valves Device, for discharging the internal pressure accumulated between pipe flange in subsequent operation；Trough of belt stud, passes through Flange inserts, and the groove of described stud extends enough distances and extends the space between pipe flange from one end of stud, Nut is arranged on stud and the relative one end of fluting and is screwed into enough distances groove is connected with space, hat shape Injection nut be screwed on trough of belt stud coordinate flange and by hole through injection nut align with groove, then twist Enter nut；Introduction valve device, is arranged on the one or more positions around flange.

Preferably, also including introduction valve device, introduction valve includes a stud, extends from space for being formed The groove to the outside of flange but stopped compared with weakness at the end of stud, injection nut be the form of standard nut also Be screwed into the enough distances of stud come engagement flange and will extend through injection nut hole align with groove, introduction valve Being connected to inject nut, valve rod is rotated to open introduction valve.

Preferably, also include Winder, by axle be wound on line thereon and form.

Preferably, line is the high duty metal line standing sufficient intensity under system operational scenario.

Preferably, line uses steel, rustless steel, copper or Meng Naier line.

Preferably, also including cable tensioner and cable tensioning block, cable tensioner is installed and is gone up most Outside Ceng, by arranging that cable surrounds flange and adjacent line, cable tensioning block be placed on leakage region close on and Cable firmly clips to cable clamp by fastening nut, and described cable is tightened to cable tensioning block backs down bolt Tension.

Preferably, also including sealer injection device, it is connected to introduction valve, valve rod Unscrew introduction valve, Sealer is injected into the gap being wound around below line, by introduction valve until pressure accumulated generation or sealer exist Position around coil and flange is flowed out.

Preferably, sealer selects according to application-specific, and wherein under low-pressure, sealer selects granular Teflon Dragon, the application of higher pressure uses the sealer of rapid solidification.

Preferably, the sealer of rapid solidification is with rubber or phenols as base, and setting time is 5-15 minute.

The present invention also aims to provide a kind of and use the method that pipe leakage device repairs pipeline of repairing, bag Include following steps:

(1) first removing a traditional bolt, the stud of trough of belt is inserted by flange, and groove is from stud One end extends enough distances and extends the space between pipe flange, and nut is arranged on that stud is relative with fluting Holding and be screwed into enough distances makes groove be connected with space, and the injection nut of hat shape is screwed on trough of belt stud and coordinates Also being alignd with groove in hole by flange through injection nut, then nut is screwed into and completes to install, introduction valve device It is installed in the one or more positions around flange；Or introduction valve device includes a stud, for shape The groove becoming one outside extending to flange from space of definition but stops compared with weakness at the end of stud, injection spiral shell Mother is the form of standard nut and is screwed into the enough distances of stud and carrys out engagement flange and will extend through injection nut Hole align with groove, for complete install, introduction valve be connected to inject nut or injection nut, valve rod is rotated Open introduction valve；

(2) for starting winding operation, one end of line is the most firmly tied on the bolt in flange gap, line Outer surface, fluting stud and fluting stud at flange bolt install pitch of the laps to surround Flange joint, often enclose Line is all strained and coordinates former circle glossily until installing last layer outside gap with arranging, line is follow-up Layer is become by the circle winding pattern with smooth tension continuous in space.

(3) intermediate point in winding operation is formed after two or three layers, coiling by below existing pitch of the laps and Line around is pivotally fixed, and operates point subsequently and canned paragraph is placed in pipeline after fixing by this way The position that flange air gap periphery is different, in winding operation, encapsulant is placed in the intermediate layer of line, line final layer Top and the top of flange between leave 1/8 inch of little edge, line is by being passed through the lower section and four finally enclosed Week is fixing, and cuts off line to be completely wound operation

(4) after coiling completes, cable tensioner is installed outside the online the superiors by arranging that cable surrounds method Blue and adjacent line, cable tensioning block is placed on leakage region and closes on and cable is firmly pressed from both sides by fastening nut To cable clamp, cable will be tightened towards tensioning block and back down bolt tension, and sealer injection operation starts, and passes through Closing the valve rod near cable Yu flange contact regional injection valve, sealer injection device is connected to introduction valve, Valve rod Unscrew introduction valve, sealer is injected into the gap being wound around below line, by introduction valve until pressing Power accumulation occurs or sealer position around coil and flange is flowed out, and cable is left in place the long enough time Wait sealer solidifies, valve rod rotary closing introduction valve, and injection device disconnects from introduction valve.

(5) back down bolt be rotated removing the tension force of cable and cable tensioner be rotated to adjacent another The position of individual introduction valve, sealer injection device is connected to cable and newly contacts neighbouring introduction valve with winding department And repetitive process, sealer injects each introduction valve in turn until leakage stops, and then sealer is slowly injected into Until sealer flows out around diatom and cable, by pump again after sealer permission one short time period of stop Enter all introduction valves；

(6) after sealer solidifies, cable tensioner is removed, and introduction valve is removed from injection nut, installs Plug, to close closed pore respectively, uses sealer to fill the edge between flange and line, between line is filled on flange bolt Gap also keeps sealer to remain secured to position under pressure in the system expected as reinforcing element, close Envelope thing is placed in the outer layer of line until filling the periphery of flange to provide the appearance that complete flange seal is smooth, polish.

According to below in conjunction with the accompanying drawing detailed description to the specific embodiment of the invention, those skilled in the art will More understand the above-mentioned of the present invention and other purposes, advantage and feature.

Accompanying drawing explanation

Some describing the present invention the most by way of example, and not by way of limitation in detail are specifically real Execute example.Reference identical in accompanying drawing denotes same or similar parts or part.People in the art Member is it should be understood that what these accompanying drawings were not necessarily drawn to scale.The target of the present invention and feature are in view of as follows Description taken together with the accompanying drawings will be apparent from, in accompanying drawing:

Fig. 1 is the side view of mounted introduction valve on leakage pipe flange, and part is cross-sectional view.

Fig. 2 is side view, represents that line is just being wound fixing.

Fig. 3 is side view, represents the cable when sealer is injected and the cable tensioner of installation.

Fig. 4 is the view of installation process, and part is cross-sectional view.

Detailed description of the invention

With reference now to accompanying drawing, the description of details will be provided according to the present invention.

Fig. 1 is the side view that pipe flange connects, it is shown that mounted introduction valve.More specifically, pipeline 10 are connected on pipe joint 14, and and are twisted through the flange 13 on every pipeline 10 by insertion bolt 12 The bolt connection that form on nut 11 to bolt 12 is formed keeps together thus sealing pipeline connector 14. If leaked at pipe joint 14, need to repair leakage without dismantling Flange joint.For reach as This effect repaired, the first step is to install multiple introduction valve devices 20.Introduction valve device 20 is used for discharging possibility Any internal pressure accumulated between pipe flange 13 in the subsequent operation being described below.

For installing introduction valve device 20, first removing a traditional bolt 12, the stud 21 of trough of belt is led to Cross flange 13 to insert.Groove 25 extends enough distances and extends between pipe flange 13 from one end of stud 21 Space 15.Nut 11 be arranged on stud 21 and the relative one end of fluting and be screwed into enough distances make groove 25 with Space 15 is connected.The injection nut 20 of hat shape is screwed on trough of belt stud 21 and coordinates flange 13 and by hole 27 Align through injection nut 22 with groove 25.Then nut 11 is screwed into and completes to install.Introduction valve device 20 It is installed in the one or more positions around flange 13.Fig. 1 also show another type of introduction valve dress Put 30 and include a stud 31, be used for formed definition one outside extending to flange 13 from space 15 but The groove 33 that the end of stud 31 stops compared with weakness.Injection nut 32 is the form of standard nut and is screwed into spiral shell The enough distances of post 31 come engagement flange 13 and will extend through injection nut 32 hole 34 align with groove 33. For completing to install, introduction valve 23 is connected to inject nut 22 or injection nut 32, and valve rod 24 is rotated to beat Drive introduction valve 23.

Fig. 2 is to show coiling and the side view of fixing operation.Provide Winder 40, typically by axle 41 He It is wound on line 42 thereon to form.The typical case that the sufficient intensity of system operational scenario usually stood by line 42 is high Strength wire.According to application and internal leakage pressure and the corrosivity of leaking medium, can use steel, Rustless steel, copper or Meng Naier line.For starting winding operation, one end of line 42 is the most firmly tied at flange On the bolt 12 in gap 15, line 42 is at outer surface, fluting stud 21 and the fluting stud of flange bolt 12 If 23 are mounted with pitch of the laps, surround Flange joint.Every astragal 42 is all strained and joins glossily with arranging Circle before closing is until install last layer outside gap 15.The layer of line 42 then is by connecting in space 15 The continuous circle with smooth tension is wound around line 42 and is formed.

At the intermediate point of winding operation, being usually after forming two or three layers, coiling is by under existing pitch of the laps The bobbin 41 of side and surrounding is fixed.If it is required, axle 41 much can enclose around lower section and surrounding.It is wound around It is fixed on operation point subsequently and preferred arrangement canned paragraph by this way around pipe flange gap 15 not Same position.If desired, the intermediate layer that encapsulant such as stainless steel silk 43 can be placed in line 42 exists In winding operation.Winding operation proceeds to instruct pipe flange gap 15 to be almost filled out.One little edge, General about 1/8 inch, stay between top and the top of flange 13 of line 42 final layer.Line 42 passes through Fix in the lower section of last circle and surrounding through 41, and cut off line 42 to be completely wound operation.

Fig. 3 is that the cable tensioner of side view display cable and installation is when sealer is injected.Complete in coiling Cheng Hou, cable tensioner 50 is installed outside online 42 the superiors by arranging that cable surrounds flange 13 and adjacent Line 42.Cable tensioning block 54 is placed on leakage region and closes on and cable 51 is firm by fastening nut 53 Clipping to cable clamp 52, cable 51 is tightened to tensioning block 54 to be backed down bolt 55 and strains.Sealer injection operation Now begin to by closing the valve rod near cable 51 with flange 13 contact area introduction valve 23.Sealer Injection device 60 is connected to introduction valve 23, valve rod 24 Unscrew introduction valve 23.Sealer 63 is injected Enter to be wound around the gap 15 below line 42, by introduction valve 23 until pressure accumulated generation or sealer 63 are online Position around circle 42 and flange 13 is flowed out.Cable 51 is left in place enough waiting as long for sealer solidification. Valve rod 24 then rotary closing introduction valve 23, injection device 60 disconnects from introduction valve 23.

Back down bolt 55 and be then rotated removing the tension force of cable 51 and cable tensioner 50 is rotated to The position of another introduction valve 23 adjacent.Sealer injection device 60 is then connected to cable 51 and coiling Introduction valve 23 near new contact repetitive process between 42.It is straight that sealer 63 injects each introduction valve 23 in turn Stop to leakage.Then sealer 63 is slowly injected into knows that sealer flows out around diatom 42 and cable 51. Sealer 63 allows to stop a short time period, and about 10 minutes, then sealer 63 was pumped into again All introduction valves 23.

Fig. 4 is at the view that will seal before removing cable 51 around coil.50 quilts are felt in cable tensioning Remove after sealer 63 waits that enough time solidifies in place.Introduction valve 23 is from injection nut 22 and 32 Removing, plug 26 has been installed and has been closed closed pore 27 and 34 respectively.Sealer 63 applies to fill flange 13 He Edge between line 42.Line 42 is typically filled the gap 15 on flange bolt 12 and protects as reinforcing element Hold sealer 63 in position in the system expected under pressure.The outer layer that sealer 63 is placed in line 42 is straight To filling in the periphery of flange 13 to provide the appearance that complete flange seal is smooth, polish.

Sealer selects according to application-specific.Under low-pressure, granular Teflon che injection, as oil can be by Use.The application of most of higher pressures must use the sealer of rapid solidification, typically with rubber or phenols For base.Setting time is generally 5-15 minute.

Although the present invention is described by reference to specific illustrative embodiment, but will not be by these The restriction of embodiment and only limited by accessory claim.Skilled artisan would appreciate that permissible In the case of without departing from protection scope of the present invention and spirit, embodiments of the invention can be modified and Amendment.

Claims

1. the method repairing pipe leakage, it is characterised in that comprise the steps:

S1: first remove a traditional bolt (12), the stud (21) of trough of belt is inserted by flange (13), groove (25) extends enough distances and extends the space (15) between pipe flange (13) from one end of stud (21), nut (11) is arranged on stud (21) and the relative one end of fluting and is screwed into enough distances groove (25) is connected with space (15), the injection nut (20) of hat shape is screwed on trough of belt stud (21) and coordinates flange (13) and hole (27) alignd with groove (25) through injection nut (22), nut (11) is then screwed into and completes to install, introduction valve device (20) is installed in the one or more positions around flange (13)；Or introduction valve device (30) includes a stud (31), it is used for being formed definition one and extends to the outside of flange (13) from space (15) but the groove (33) that stops compared with weakness at the end of stud (31), injection nut (32) is the form of standard nut and is screwed into stud (31) enough distances and carrys out engagement flange (13) and will extend through the hole (34) of injection nut (32) and align with groove (33), for completing to install, introduction valve (23) is connected to inject nut (22) or injection nut (32), valve rod (24) is rotated to open introduction valve (23).

2. according to the method for the repairing pipe leakage described in right 1, it is characterised in that also comprise the steps:

S2: for starting winding operation, one end of line (42) is the most firmly tied on the bolt (12) of flange gap (15), and the line (42) outer surface, fluting stud (21) and fluting stud (23) in flange bolt (12) installs pitch of the laps to surround Flange joint.Every astragal (42) all strain and coordinates former circle glossily until installing outward last layer in gap (15) with arranging, the follow-up layer of line (42) is by being wound around line (42) formation with the circle of smooth tension continuously in space (15).

3. according to the method for the repairing pipe leakage described in right 2, it is characterised in that also comprise the steps:

S3: after the intermediate point of winding operation forms two or three layers, coiling is by being fixed through the line of existing pitch of the laps below and around by axle (41), operate point subsequently after fixing by this way and canned paragraph is placed in the position that pipe flange gap (15) is the most different, in winding operation, encapsulant (43) is placed in the intermediate layer of line (42), 1/8 inch of little edge is left between top and the top of flange (13) of line (42) final layer, line (42) is by fixing through (41) in the lower section of last circle and surrounding, and cut off line (42) and be completely wound operation.

null4. according to the method for the repairing pipe leakage described in right 3，It is characterized in that，Also comprise the steps: S4: after coiling completes，Cable tensioner (50) is installed outside online (42) the superiors by arranging that cable surrounds flange (13) and adjacent line (42)，Cable tensioning block (54) is placed on leakage region and closes on and cable (51) firmly clips to cable clamp (52) by fastening nut (53)，Cable (51) will be tightened towards tensioning block (54) and back down bolt (55) tension，Sealer injection operation starts，By closing the valve rod near cable (51) Yu flange (13) contact area introduction valve (23)，Sealer injection device (60) is connected to introduction valve (23)，Valve rod (24) Unscrew introduction valve (23)，Sealer (63) is injected into the gap (15) being wound around line (42) lower section，By introduction valve (23) until pressure accumulated generation or sealer (63) position around coil (42) and flange (13) is flowed out，Cable (51) is left in place enough waiting as long for sealer solidification，Valve rod (24) rotary closing introduction valve (23)，Injection device (60) disconnects from introduction valve (23).

5. according to the method for the repairing pipe leakage described in right 4, it is characterized in that, also comprise the steps: S5: back down bolt (55) and be rotated removing the tension force of cable (51) and cable tensioner (50) is rotated to the position of adjacent another introduction valve (23), sealer injection device (60) is connected between cable (51) with coiling (42) introduction valve (23) near new contact repetitive process, sealer (63) injects each introduction valve (23) in turn until leakage stops, sealer (63) is then slowly injected into until sealer flows out around diatom (42) and cable (51), sealer (63) is pumped into all introduction valves (23) after allowing to stop a short time period again.

6. according to the method for the repairing pipe leakage described in right 5, it is characterized in that, also comprise the steps: S6: cable tensioner (50) is removed after sealer (63) solidifies, introduction valve (23) is from injection nut (22, 32) remove, installing stopper (26) is to close closed pore (27 respectively, 34), sealer (63) is used to fill the edge between flange (13) and line (42), line (42) is filled the gap (15) on flange bolt (12) and keeps sealer (63) to remain secured to position under pressure in the system expected as reinforcing element.

7. according to the method for the repairing pipe leakage described in right 2, it is characterized in that, described every astragal (42) is all strained and coordinates former circle until install outward last layer in gap (15) glossily with arranging, the follow-up layer of line (42) is formed by being wound around line (42) with the circle of smooth tension continuously in space (15).

8. according to the method for the repairing pipe leakage described in right 6, it is characterized in that, described sealer (63) is placed in the outer layer of line (42) until filling the periphery of flange (13) to provide the appearance that complete flange seal is smooth, polish.