CN101329006B - Method for trenchless rehabilitation of lines through turning flexible resin immersion tube - Google Patents
Method for trenchless rehabilitation of lines through turning flexible resin immersion tube Download PDFInfo
- Publication number
- CN101329006B CN101329006B CN200810144318.1A CN200810144318A CN101329006B CN 101329006 B CN101329006 B CN 101329006B CN 200810144318 A CN200810144318 A CN 200810144318A CN 101329006 B CN101329006 B CN 101329006B
- Authority
- CN
- China
- Prior art keywords
- flexible resin
- liner
- steam
- dip pipe
- pipe
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention provides a method for non-excavation and rehabilitation of an existing pipeline by turning a flexible resin impregnated tube, which includes steps of: providing a flexible resin impregnated tube supply source; turning the flexible resin impregnated tube into an existing pipe; connecting punching flat tube to an end of the turned flexible resin impregnated tube; arranging a drainage device for steam flowing the turned flexible resin impregnated tube; guiding the steam into the flat tube and the interior of the turned flexible resin impregnated tube, and enabling the steam to flow the drainage device; curing the resin in the flexible resin impregnated tube; in a horizontal state forming a plurality of nozzles along the flat tube length around the circumference of the flat tube so as to distribute the steam along the length of the turned flexible resin impregnated tube; and along the flat tube length, spraying the steam to the bottom of the turned flexible resin impregnated tube through the plurality of the nozzles, and spraying to any condensate liquid pond for forming the turned flexible resin impregnated tube bottom.
Description
The application is the dividing an application for " adopting air and the installation method of the cured in place liner of the steam cure that flows through ", the number of patent application Chinese invention patent application that is 200580045775.X that be on November 2nd, 2005, denomination of invention the applying date.
The related application of cross reference
The application is with the provisional application No.60/624 of the accomplice pending trial submitted on November 3rd, 2004, and 841 is basis.
Technical field
The present invention relates to a kind of installation method of cured in place liner and for realizing the device of described method, wherein said installation method is: the liner of resin-dipping is drawn in existing pipeline, utilize the swelling bag (inflation bladder) of air inversion resin-dipping, the steam that recycling Continuous Flow is crossed makes resin solidification in the situation that there is no the pressure loss.Described method and apparatus is particularly suitable for the installation environment of major diameter cured in place liner.
Background technique
Common general knowledge, for guiding existing pipeline and the pipeline of fluid, especially the under ground piping such as sanitary sewer, storm-water drainage pipeline, water pipe and tracheae, often needs due to the leakage of degeneration or fluid to repair.This leakage may be from around to inside or the guided portion on internal leakage inlet pipe road.Or this leakage may be to enter surrounding environment to external leakage from the guided portion of pipeline.It is no matter endosmosis or to exosmosis, this leakage part should be avoided.
Leakage in existing pipeline may be the Rig up error because of original pipeline, or degenerates because of the pipe causing because of normal aging itself, or due to the impact of carried corrosivity or abrasive material.Near crack pipe coupling place or pipe coupling may be because of the environmental factor such as earthquake, or large vehicle ground movement above pipe, or similarly nature or artificial vibration, or other similar reason.Which kind of reason no matter, such leakage part is undesirable, leakage may cause the waste of the fluid that transmits in pipeline or cause the infringement to surrounding environment, also may cause dangerous public health disaster.If leaked, continue,, due to the loss of the lateral support of soil and pipeline, likely to cause the structural breaking-up of existing pipeline.
Due to labor cost, energy cost and the machine cost of sustainable growth, by digging out and change the mode of pipeline, repair under ground piping or the under ground piping that may leak and partly become more and more difficult and more and more uneconomical.Therefore the whole bag of tricks that, existing pipeline is carried out to field patch or recovery is devised.These new methods have been avoided excavation and have been changed pipeline or cost and danger that pipeline section brings, and have avoided huge inconvenience that the public is caused.The most successful pipe-line reconditioning method of current extensive use or a kind of being called in trenchless repairing method
method.U.S. Patent No. 4,009, is described in detail this kind of method in 063, No.4,064,211 and No.4,135,958, and its content is all incorporated to this specification by quoting.
In the standard operation of Insituform method, elongated flexible tubular liner is installed in existing pipeline, described flexible tubular liner can be made by impregnated material by felt fabric (felt fabric), foam or similar resin, and has the outer impermeable coating that has flooded thermosetting property cured resin.Generally speaking, described in two Insituform patents determining afterwards, adopt inversion method (eversion process) that liner is installed.In inversion method, act on to the radial pressure of the inside of inverted liner liner is squeezed on pipeline internal surface, and liner is engaged with the internal surface of pipeline.Yet, Insituform method is also implemented by the following method: utilize rope or hawser that resin-dipping liner is drawn in pipeline, use the inwall overturning in liner, the impervious independently-inflatable capsule of fluid or expansion tube make liner be close to existing pipeline to solidify.This resin-dipping liner is generally called " cured in place pipeline " or " CIPP liner ", and this installation is called CIPP and installs.
CIPP flexible tubular liner has smooth skin, described skin by cover when the original state of liner liner outside, polymer that is relatively soft, substantially non-infiltration makes.After liner overturns in installation process, the described impervious bed after upset is positioned at the inner side of (end up) liner.When flexible lining scene is arranged in pipeline, from inside, pipeline is pressurizeed, preferably utilize the inversion fluid such as water or air radially outwards to oppress liner, so that it engages with the internal surface of existing pipeline and be docile and obedient.
In general, in erecting bed, erect upset tower to provide inverted liner or swelling bag required pressure head.As an alternative, U.S. Patent No. 5,154,936, No.5,167,901(RE35,944) and No.5, shown in 597,353 and recorded a kind of upender, the content of described U. S. Patent is all incorporated to this specification by quoting.The liner that hot water is imported to upset by recirculation hose starts solidifying of resin, and described recirculation pipe is connected in the end of the liner in upset.Upset water by the heat-source Cycles such as boiler or heat exchanger, utilize, then turn back to upset liner until the curing of liner complete.Then, the resin being immersed in can impregnated material is cured, to form hard, close-fitting rigid pipe liner in existing pipeline.This new liner can seal any crack effectively, and can repair the aging of any pipeline section or pipe joint part, to prevent inside or the outside further leakage to existing pipeline.Curing resin is also for strengthening existing tube wall, so that the additional structural supports for surrounding environment to be provided.
When drawing in inflate method the cured in place liner of tubulose is installed, liner adopts the mode insulating varnish identical with inversion method, and is placed in existing pipeline to fold (collapsed) state.Generally, down tube, expansion tube or the pipeline that bottom has elbow (elbow) is placed in existing manhole or turnover position, and the swelling bag in upset is by described down tube and launch, and the opening of a horizontal component of going for a stroll is flange (cuff) backward.Then, existing ducted folding liner is placed in to swelling bag backward on the end of flange and be fixed on described end.Then will send into described down tube such as inversion fluid such as water, hydraulic pressure is released swelling bag from the horizontal component of elbow, and folding liner is expanded and be close to the internal surface of existing pipeline.The upset of described swelling bag lasts till that described swelling bag arrives and extend into manhole or the second turnover position in downstream.Now, the liner that can be close to being squeezed existing inner surface of pipeline is cured.Hot water is incorporated in swelling bag and starts to solidify, described hot water recirculation is to impel the resin solidification being immersed in liner.
After resin solidification in liner, swelling bag can be removed, or stays the scene of solidifying inner lining.If swelling bag is stayed to scene, generally speaking, described swelling bag will be such capsule: its resin with relative thin can impregnate layer, and described resin can impregnate layer be positioned at the inner side of outer impermeable layer.In this case, as known in the art, the resin after upset can impregnate layer will make swelling bag be bonded on the resin-dipping layer of liner.Now, need to enter manhole or turnover position and open liner to discharge for the water of the described swelling bag that expands and to cut away the end that extends to manhole.In the time will removing swelling bag, can be by fleeing from dilatory (holdback) rope of pulling back of end (evasion end) to remove swelling bag, described in the rope of pulling back be connected in swelling bag tail end, for controlling its reversal rate.This operation is generally from receiving terminal, to puncture swelling bag to discharge for the water of inverse inflation capsule and to start to carry out after resin solidification.Finally, can remove down tube.Facility will be connected again by having added the pipeline of liner.If the facility exist intersecting connects, before the pipeline that has added liner in utilization recovers described facility, the facility that will again open described intersection connects.
In the existing water method for turning using in Insituform method, use cold water inverted liner.After liner fully overturns in existing pipeline, then make hot water circuit by being connected in the horizontal pipe of liner upset face.In cure cycle, make hot water circuit.In middle diameter and large diameter liner, along with the increase of liner diameters, the required water yield of overturning sharply increases.No matter for upset or draw in inflation, the water of the inflation liner that is useful on must heat and cure cycle in be heated.In addition, once complete curing, must carry out cooling curing water by adding cold water or continuous circulation, until sodified water is in such temperature: sodified water can be released in downstream line after cutting away liner along the end of pipeline, or can extract out from solidifying inner lining and be transferred in suitable processing system.
Adopt the main inconvenience of the equipment of this water be to overturn quantity and the usability of water.Generally water must be heated to 180 °F to work to solidifying from 55 °F, then also must before being released into suitable processing system, add more water to be cooled to 100 °F.
By adopting air place of water to produce tilting force, can overcome this inconvenience, once and the liner of dipping fully overturn, just can to described liner, be cured with steam.Although water is that to produce steam necessary, the water yield of vapor form be only for 5～10% of water upset, curing and cooling institute water requirement.The place of supplying water in inconvenience this means: even if also can adopt steam to be cured.The violent reason reducing of the water yield is: with one pound of water ratio of heating, one pound of water of steam condition can provide more energy.The every reduction of temperature once, discharge the heat of approximate 1000BTU, and one pound of water only discharges 1BTU heat corresponding to one pound of steam of one pound of water.The water demand of this minimizing adds effective shortening of heating cycle, has greatly reduced cure cycle and installation time.
Why does is industry also slowly reluctant to abandon water upset and water cure in the situation that of having this kind of obvious beneficial effect in using air inversion and steam cure?
When the liner of water upset resin-dipping, liner at invertible head (inverting nose) to the not flip portion between upender, be subject to the effect of the power that equates with the water yield shifting by liner to float (buoy up).The in the situation that of CIPP liner, this means that the actual volume weight of liner reduces greatly, thereby inverted liner is not reduced towards the dilatory required power of invertible head.And when producing tilting force with air, unturned liner is positioned at the bottom of pipe, the air pressure acting on the invertible head of liner must be dilatory forward by the liner of total weight.
No matter how to produce inversion energy, must overcome three kinds of power with upset CIPP liner.These power are:
1. the needed power of inverted liner (inner side of liner is outwards routed up).This power changes according to the relation of the thickness of liner, material type and thickness of inner lining and diameter.
2. from upender to invertible head, draw the needed power of liner.
3. dilatory liner is by the needed power of upender.
It is identical that above-mentioned the first power (1) is overturn for air inversion and water.
The second power (2) changes huge between water upset and air inversion, thereby can limit the length of air inversion.The CIPP liner of installing is not caused to negatively influencing and/or to the hurtful situation of existing pipeline under, it is conditional can adopting great pressure to carry out liner upset.For water upset and air inversion, all can with lubricator reduce dilatory force.
The third power (3) can based on device design and change.In the most of devices that use now, when one or two in the first power and the second power increase, dilatory liner will increase by the needed power of device.This is to be caused by the following fact: in order to increase available inversion energy, the typical device of current use restriction compression fluid is from pressure chamber loss inletting device and the flange of the liner upset and the end of tying up of liner entrance below.This restriction is generally by increasing the pressure in pneumatic sphincter stuffing box gland (pneumatic sphincter gland), or realizes by the overturn stuffing box gland of fluid supplying energy of use.Generally, the compression of the CIPP liner of stuffing box gland material and upset has limited this inside motion.This causes the increase that rubs between the CIPP of upset and stuffing box gland conversely.
Technological scheme as an alternative, the energy entrained in view of steam proposed use steam.At Insituform patent No.6, open in 708,728 and No.6,679,293: the steam that adopts air expansion swelling bag and employing to flow through, the content of described patent is incorporated herein by reference.In the patents of authorizing recently at these, adopt the method that draws in inflation technology, and these methods are now for the liner of minor diameter.For the liner of these sizes, these methods are better than water inversion method.Yet disclosed clean cartridge is not suitable for middle diameter and large diameter liner in these patents.Middle-sized liner refers to the liner of diameter between approximate 21 inches to 45 inches.Major diameter liner refers to that diameter surpasses the liner of approximate 45 inches.
Although utilize the existing method that hot water is cured to there are above-mentioned various advantages, but energy and labor cost and relate to the trend that makes in a large number the defects such as water have increase, described water may carry the vinyl benzene because the resin of institute's type of service produces conventionally.Therefore, a kind of restorative procedure that is suitable for middle diameter liners and major diameter CIPP liner need to be provided, wherein adopt air to pass through resin-dipping swelling bag by liner inflation, described swelling bag has inner air/steam discharge pipe, and by the steam that flows through by resin solidification, with the energy that utilizes steam to provide, provide thus a kind of installation method faster and more more economical than the various restorative procedures of existing use.
Summary of the invention
Generally speaking, according to the present invention, provide a kind of method of repairing existing pipeline by drawing in inflate method erecting bed solidifying inner lining.With the swelling bag of air inflation resin-dipping, and without the pressure loss in the situation that, by the steam cure flowing through, be immersed in the resin in liner and swelling bag.The liner of resin-dipping is drawn in the existing pipeline that will repair and in end cut to extend beyond existing pipeline.Tail end at swelling bag is provided with tapping equipment, described swelling bag have be coated with the resin of non-infiltration coating layer can impregnated material layer.Described tapping equipment comprises the opening end with the connection set of pulling back.Opposite end or the front end with capped end insert the tail end of swelling bag and tie up at the tail end of swelling bag or the end of pulling back, and described capped end has steam valve.
By the flat hose of pull back rope and the punching connection set of pulling back described in being connected in.The liner of resin-dipping is drawn in to main pipeline (host pipe).Swelling bag is pulled through to the have inversion boot pressurized upset chamber of (inversion boot).The near-end of liner is tied up in the inversion boot of swelling bag.The air of pressurized is fed to upset chamber valve, the liner that upset air draws in swelling bag upset inflation.
Once the far-end at main pipeline, can see discharge pipe, stop upset.The flat hose of cutting and boring is also connected in steam hose by far-end.Pipe end assembly is connected in to the near-end of liner, and overturns to allow expansion tube to combine with described pipe end assembly swelling bag, and when upset completes, make tapping equipment expose.
Discharging hose is connected to the far-end of the tapping equipment exposing.The steam hose that is connected in flat hose near-end is connected in boiler.Steam is delivered to flat hose with heating liner, then open escape cock on discharge pipe to keep the pressure in liner.Keep steam and air stream until: temperature significantly improves, and air reduces, and whole steam is for cured resin.End at cure cycle is slowly closed steam valve and adds air to begin to cool down.As conventional mounting, the end of liner is cut away.
Therefore, the object of this invention is to provide the method for the existing pipeline of a kind of improved reparation, described method is carried out erecting bed solidifying inner lining by the following method: draw in the liner of resin-dipping and by the swelling bag of the resin-dipping that overturns with air inversion swelling bag.
Another object of the present invention is to provide a kind of improved swelling bag, and it is for erecting bed solidifying inner lining, and described swelling bag has the discharge pipe that is arranged on swelling bag tail end.
Another object of the present invention is to provide a kind of improved to draw in the method for inflate method erecting bed solidifying inner lining, in described method, adopts the steam flowing through to carry out solidifying of resin.
A further object of the present invention is to provide a kind of improved to draw in the method for inflate method erecting bed solidifying inner lining, wherein adopts air inversion swelling bag inflation liner, adopts steam cure swelling bag and draws in the resin in liner.
A further object of the present invention is to provide a kind of tapping equipment, and it is arranged on the tail end of swelling bag, to allow Bas Discharged and to allow vapor stream overexpansion capsule and liner.
A further object of the present invention is to provide a kind of installation method of improved cured in place liner, and wherein said method utilizes steam to be cured, the punching flat hose by being connected in swelling bag tail end along the length adjustability of swelling bag steam is provided.
The invention provides a kind of method of carrying out the existing pipeline of non-trenchless rehabilitation by upset flexible resin dip pipe, comprise step:
The supply source of flexible resin dip pipe is provided;
Described flexible resin dip pipe is inverted into existing pipeline;
The flat hose of punching is connected in to the tail end of the described flexible resin dip pipe in upset;
The tapping equipment of the described flexible resin dip pipe that is provided for that vapor stream is crossed and has overturn;
The inside of the flexible resin dip pipe that steam is imported to described flat hose and overturn, and make described vapor stream cross described tapping equipment;
Make the resin solidification in described flexible resin dip pipe;
Under horizontal state, around the circumference of described flat hose, along the length of described flat hose, form a plurality of spouts, for the length of the flexible resin dip pipe along having overturn, scatter steam; And
Along the length of described flat hose, by described a plurality of spouts, steam is sprayed to the bottom to the described flexible resin dip pipe having overturn, and spray to any condensate pit of the bottom of the flexible resin dip pipe having overturn described in being formed at.According to present specification, it is clear and apparent that other object of part of the present invention and advantage will become.
Therefore, the present invention includes: the step contact each other described in one or more of some steps; And there is the device contacting between feature, feature and parts.These contents are example in disclosed content below, and protection scope of the present invention will be illustrated in claims.
Accompanying drawing explanation
Fig. 1 is section front elevational schematic, it shows when the installation process of main pipeline being added to liner starts, in the culvert pipe (culvert) of typical interstate highway, by the liner of resin-dipping from the upstream of described culvert pipe or upset end to downstream or the far-end of described culvert pipe, draw in;
Fig. 2 (a), 2(b) and Fig. 2 (c) be generalized section, it shows the Exhaust assembly while installing to cured in place swelling bag;
Fig. 3 is plan view, its show according to of the present invention, be tied to the cured in place swelling bag on the discharging hose assembly in Fig. 2;
Fig. 4 is generalized section, its show according to of the present invention, for the swelling bag of Fig. 3 being carried out to the pressurized upender of air inversion;
Fig. 5 is generalized section, and it shows according to upset face of the present invention, swelling bag in main pipeline far-end in installation process, and it has observation trap with the location, position to discharge pipe;
Fig. 6 is generalized section, and it shows the upset face of the swelling bag of main pipeline far-end in Fig. 5, and described swelling bag has on-the-spot end-enclosed framework;
Fig. 7 (a), Fig. 7 (b) and Fig. 7 (c) are plan views, and it shows according to step of the present invention, that form at the scene air liberation port in setting expansion capsule.
Embodiment
Fig. 1 shows the typical expressway duct (culvert) 11 with existing pipeline (passageway) 12, and pipeline 12 passes across the below of expressway 13 and 14.Fig. 1 shows upper shed 16 and under shed 17.At the construction field (site), the truck 19 of appropriateness refrigeration provides the liner of resin-dipping, and the liner of described resin-dipping draws in from upper shed 16 by the capstan winch 43 at lower open end 17 places.Liner 18 is enclosed with polypropylene cover in case stop loss and do harm to and control longitudinal stretching.
In association area, the flexible cured in place liner of known type can be made by impregnated material by one deck flexible resin at least, such as having felt layers of outer impermeable polymer film etc.Felt layers and rete sew up to form tubular liner along jointing line.In order to ensure the impermeability of liner, on jointing line, arrange and be the thermoplastic film of strip-type or on jointing line, squeeze into shared (compatible) extruded material.U.S. Patent No. 6,708, discloses such liner in 728 and No.6,679,293 in detail.
For the liner of larger liner diameters, can adopt multilayer felt materials.Felt layers can be natural or synthetic flexible resin absorbable material, such as polyester fibre or acrylic fiber etc.Non-permeable membrane in skin can be polyolefin such as polyethylene or polypropylene, such as vinyl polymers such as PVC＝polyvinyl chloride, or polyurethane commonly known in the art.In the initial step of all non-trenchless rehabilitation installation methods, clear up and the preparatory work such as shooting existing pipeline.
Referring to Fig. 2 (a), Fig. 2 (b) and Fig. 2 (c), its discharge pipe 21 that shows (the capped end) 22 that have capped end and steam valve 23 is inserted in the end of swelling bag 24.Discharge pipe 21 has the steam hose 26 of steel bushing to form by the cover of certain length, comprises the open end 27 with (holdback) connection set 28 of pulling back.The opposite end of discharge pipe 21 or front end 29 insert the tail end of swelling bag 24, and the tail end of described swelling bag is tied up at the tail end of discharge pipe 21 or the end of pulling back by steel band 31.Discharge pipe 21 is coated with plastic film pipe 34, and plastic film pipe 34 hitches to prevent tearing of swelling bag 24 by a plurality of straps 36.
As shown in Figure 3, the capped end 22 of discharge pipe 21 inserts swelling bag 24 and is fixed in swelling bag 24 with belt 31.The rope 32 of pulling back is connected in the connection set 28 of pulling back.Condensation tube 33 is also installed on the open end 27 of discharge pipe 21.
Swelling bag 24 can also comprise the air liberation port 81 shown in Fig. 7 (c), and described air liberation port is formed on the place, approximately 2 to 4 inches of ends apart from swelling bag 24.This makes the upset along with swelling bag 24, and the air in swelling bag 24 was discharged before the valve by upender.Liberation port 81 forms as follows: the hole 82 1/2 inch of the top layer cutting of swelling bag 24, adopts first sticking patch (patch) 83 coverage holes 82 fixing from three sides, then with being also stacked it from the second fixing sticking patch 84 of three sides.The inner lining material that sticking patch 83 and sticking patch 84 have impervious bed by outside forms.
The typical sizes of air liberation port 81 is as follows: the first sticking patch 83 is taken advantage of 3 to 6 inches for being similar to 3 to 6 inches, and is placed in 82 tops, hole.Conventionally, sticking patch 83 is 3 inches of rectangles of taking advantage of 5 inches, and the skin of swelling bag 24 is fixed on the long limit in its two minor face and distally.The second sticking patch 84 needs bigger, can take advantage of 4 to 7 inches for being similar to 4 to 7 inches.Typically, sticking patch 84 is 4 inches of rectangles of taking advantage of 6 inches, and the long limit that its two minor face is close with size is firmly secured to the outer covering layer of swelling bag 24.
Before the installation of the method according to this invention starts, adopt the technique that a kind of being called " soaks " that curable thermosetting resin is immersed in the felt of liner 18.As it is widely known to add liner field, described in soak method and generally include: by be formed at the end of outer impermeable rete or opening by resin injection in felt layers; Vacuumize; And make the liner of dipping pass through roll.In Insituform U.S. Patent No. 4,366,012, recorded a kind of such vacuum impregnation process, the content of described patent is incorporated herein by reference.A variety of resins all can be used, and as polyester resin, vinyl esters resin, epoxy resin etc., can improve as required.Preferably use is at room temperature relatively stable, but is easy to curing resin when heating.
The liner 18 of dipping arranges approximate 20 feet from the upper shed 16 of main pipeline 12 to lower open end 17.Rope or rope 15 from upper shed 16 through under shed 17.Then rope 15 is connected in and draws in capstan winch 43 and pull to upper shed 16.
Along with liner 18 enters main pipeline 12, the volume 41 being formed by polypropylene 42 or other applicable plastic film or cover is placed in liner 18 belows that draw in and is wrapped in described liner around.Along with liner 18 is drawn in main pipeline 12 by capstan winch 43, overlap 20 and be folded on liner 18 and tying up or tying, to protect liner 18.Continue to draw in liner 18, the ideal distance until the far-end 18b of liner 18 and the end of main pipeline 12 are separated by.In tail end 18b, form opening 18c, to assist the accurate location of determining discharge pipe 21.
By air inverter, swelling bag 24 is inverted into liner 18.In described embodiment, upender 51 has at least one valve or stuffing box gland, for combining with described swelling bag when adopting air inversion swelling bag 24.Device 51 comprises at least one U.S. Patent No. 5,154, the sphincter valve of type shown in 936 (sphincter valve) 52, and be positioned at the tail end of the liner 18 drawing in.Device 51 comprises: entry end 53; And the outlet end 54 with inversion boot 56, to match with the diameter of swelling bag 24.By air Injection valve air inlet 57 with operating valve 52 and in conjunction with swelling bag 24.Inversion boot 56 comprises upset air inlet 58, for injecting air to control the upset of swelling bag 24.
Turnover and drag swelling bag 24 and make it pass through upender 51, until it is enough to by the surface of inversion boot 56.Then swelling bag 24 turned down in inversion boot 56 and tie up securely (banded) thereon.Then the liner drawing in 18 is tied up in inversion boot 56, and on the swelling bag in having tied up 24.For operating the sphincter valve 52 of upender 51 and being connected in upender 51 for the upset air hose of inverse inflation capsule 24.
In the tradition that makes water method for turning, draw in inflation Method for Installation, in down tube, the height of water column has kept the pressure in swelling bag and liner.By the liner of dipping is exposed in heat and starts to solidify.By the water of heating is imported, upset is managed or by making hot water circulate and realize in recirculation hose, described recirculation hose draws in the swelling bag in upset by being connected in the rope of pulling back of the swelling bag tail end in upset conventionally for this.In general, according to the thickness of the kind of selected resin and liner, adopt water cure to want 3 to 5 hours consuming time.After solidifying, removing swelling bag needs the manhole that enters downstream to discharge the water of heating before.
For middle diameter and large diameter liner, this has brought very large problem, especially when to the typical expressway culvert pipe as shown in Figure 1 with very large gradient again lining.This not only needs a large amount of water, and the extra pressure producing due to height difference will crack (rupture) swelling bag.For fear of this situation, wish utilize air to expand and utilize steam cure.In addition, the entrained energy of steam will be with more low-yield one-tenth solidifying inner lining quickly originally.
For example, lower Table I shows the contrast of cured in place pipe being carried out to water cure and the required water of steam cure and energy, and wherein, described cured in place pipe is 114 feet, and diameter is 42 inches, and has 9.5 feet of down tubes and 3.5 feet of downstream.
Table I
Fig. 4 shows U.S. Patent No. 5,154, a disclosed quasi-representative pipe upender 51 in 936, and the content of described patent is incorporated herein by reference, to use according to a preferred embodiment of the present invention.Upender 51 can level be arranged on the upstream extremity of main pipeline.U.S. Patent No. 5, various connectors shown in 154,936 are arranged on upender 51, to allow importing air, operate sphincter valve 52, and upset air is fed to the inside of swelling bag 24 and feeds steam, to realize solidifying of resin in swelling bag 24 and liner 18.
By upender 51, swelling bag 24 is sent into and tied up in turned ends.The upstream extremity of the exposure of liner 18 is tied up on swelling bag 24.Valve 52 pressurizeds, swelling bag 24 overturns into liner 18.To the air pressure that air inlet supply is enough, to realize, overturn.Surface to swelling bag 24 when sending into swelling bag 24 applies oiling agent, to be beneficial to it by the movement of stuffing box gland in the umklapp process of described swelling bag.
Regulate the upset supply of air and the pressure of swelling bag, to keep uniform reversal rate.The pressure of suggestion is:
When swelling bag 24 passes through upenders 51 and pulls back end arrival upender 51, for importing the flat hose (lay flat hose) 71 of the punching of steam, be connected in the connection set 28 of pulling back.Along with the connection set 28 of pulling back, pull back rope 32 and flat hose 71 enter upender 51, be cured.
In general, flat hose 71 is for bearing any flexible hose material of the vapor (steam) temperature under pressure minimum, such as rubber etc.Applicable rubber comprises: the polyester of Viton rubber, EPDM rubber and nitrile coating strengthens hose material.These flexible pipes should oil resistant and resistance to changes of weather.Generally, flat hose 71 is 4 " diameter flexible pipes.Yet 3 " and 2 " diameter is suitable for according to the installation of air inversion steam cure of the present invention.After using with steam, do not find that any reduction appears in the physical property of the polyester reinforced hose of nitrile coating simultaneously.This flexible pipe itself is also not used in delivery steam, but is used in other pipe/liner, thus the pressure that bears of flat hose is subject to multiple discharge pressure and the internal pressure of the pipe/liner that will be cured between the impact of pressure difference.Between the 0.5psi of this pressure difference when generally the approximate 1.5psi when solidify starting nearly finishes to cure cycle.
With predetermined pattern, flat hose 71 is punched, and seal at far-end.In solidification process, these holes of beating radially produce that high pressure steam sprays and eddy current, to reduce the temperature gradient in the liner of upset, and no matter position or the rotation of flat hose 71, all can promote hot transmission.According to the diameter of main pipeline and the length that will add the main pipeline of liner, the diameter dimension scope in the hole of being beaten can be for from 1/16 ' ' to 1/4 ' '.The interval that apply two hole repeat patterns in whole length of flat hose, wherein, described two holes are positioned the relative both sides of described flat hose and longitudinally have 4 ' ' to 12 ' '.The size of selecting hole is so that the steam injection in whole length of flat hose has enough speed, and summation and the boiler capacity of the volume flow of all steam injection match.
By using flat hose the curing of CIPP pipe as above with in installing, can realize following three important goals.
1. along the whole bottom lengths uperize energy of CIPP pipe, this has been avoided the thermal stratification from near-end to far-end.
2. along with the increase of the distance between hole and near-end, the actual quantity of the steam penetrating from each hole reduces.This means the average residence time optimization that can make uperize, to solidify CIPP pipe.
Even the position assurance of flat hose in the sagging region of main pipeline, there is condensed fluid and assemble, the bottom of CIPP pipe also can be solidified.The external temperature that flat hose is 200 °F and pass through beaten steam hole and guaranteed effectively to solidify by injecting steam in condensed fluid.
To inject the curing resin poundage of every pound of steam of CIPP pipe in cure cycle, weigh, to the liner in solidifying, provide steam by this way, greatly improved curing efficiency.Along being uniformly distributed of the energy of length of tube, also make from the top of pipe bottom and the near-end from the far-end of pipe to pipe start heat release simultaneously.
When swelling bag 24 continues upset and arrives definite lower open end 17, discharge pipe 21 starts the upset face that leaves.In can the far-end 18b by the liner extending from lower open end 17, cut observation hole 18c and determine position accurately.This illustrates in greater detail in Fig. 5.When stopping overturning, keep the air pressure in swelling bag 24.Now, as shown in Figure 6, guide discharge pipe 21 into end-enclosed assembly 61.Assembly 61 stops and discharge pipe 21 is combined in closed component 61 until swelling bag 24 is closed to continue upset.
Closed component 61 comprises the lower horizontal pressure foot 64 that has upper horizontal pressure foot 62 and match, and described upper horizontal pressure foot has the middle section 63 of increase, and lower horizontal pressure foot has the middle section 66 of increase, with when discharge pipe 21 leaves under shed 17, makes its combination.Upper horizontal pressure foot 62 and lower horizontal pressure foot 64 are fixed on around the far-end of liner 18 by a plurality of bolts 67.
Now, steam is imported to the flat hose 71 of the punching connect, the resin in swelling bag 24 and the liner 18 that draws in is cured starting.In exemplary embodiment of the present invention, flat hose 71 is that diameter is the high temperature thermoplasticity pipe of 4 inches.Half inch of place of folded edge in the relative folded part (folds) of distance, every one foot of spout that bores 1/8th inches.The pattern of this spout provides more steam in proximal end, even if flexible pipe 71 rotates in installation process, also can guarantee good mixing.By steam inlet flexible pipe, provide steam, to provide steam to suction line, described steam inlet adopts manifold valve to regulate to provide gas/steam mixture.Flowing of adjustments of gas/vapour mixture, to keep the solidifying pressure of approximate 3～6psi, until the temperature of gas/steam mixture reaches: the temperature recording at discharge pipe place is desirable approximate 170～220 °F.
The heating of being recommended and solidifying pressure that the psig of take is unit are as follows:
According to concrete resin and the thickness of pipe, once solidify, steam off stream regulates air stream to keep pressurized to solidify simultaneously.Escape cock is adjusted to six-o ' clock position and keeps at least one hour, to be cooled to approximate 130 °F.
Once temperature is cooled to required level, air flow pressure is decreased to zero, and escape cock is opened completely.Any condensed fluid that may be gathered in swelling bag 24 is discharged by the condensate discharge part 33 on Exhaust assembly 21.
It is a kind of saving cost and effectively for installing and solidifying to the method for major diameter (18 ' '～84 ' ') liner that the air inversion of cured in place pipe (CIPP) liner described here and steam cure are installed.Adopt steam cure and not to the inverted liner needed technique of exitting, very different from the more typical technique of utilizing hot water to be cured the CIPP liner of these same diameter.In adopting the technique of water cure, typically, hot water is recirculated to boiler.On the contrary, for avoiding condensation and the pressure loss, the through-flow method that steam cure adopts one way to pass through.This condensation causes producing cooled region in the bottom of liner, and curing required energy can not be provided.Utilize steam centering diameter and major diameter CIPP liner to be cured, go back Need and utilization steam minor diameter CIPP liner is cured to different technology.
The water using in steam cure is only approximate 5% of the water that uses in water cure, the energy using is only approximate 15～30% of the energy that uses in water cure, therefore when use is suitable, steam cure is than the water cure solidification method of environmental protection more.In the trial of above diameter liners that carries out in early days extends to 18 ' by CIPP liner steam curing process ' and 18 ' ', incomplete situation is solidified in the bottom that often occurs the CIPP liner of installation, and uses a large amount of steam and/or steam and air also only occasionally to have successfully to overcome the trial of above-mentioned problem of solidification.In addition, the importing of a large amount of steam has the tendency that extends the cure cycle time and increase energy usage.Even if the energy that has the cure cycle having extended and increased, is also difficult to realize effectively and solidifying under certain field condition.Can believe, this is to assemble and formed condenser zone in the hypomere due to thermal stratification and the liner at pipeline and in solidifying.The condensed fluid assembled is heat insulation and hindered heat and be passed to resin layer from the vapor film of top.
Middle diameter, to the water cure of major diameter CIPP liner, solidifies every pound of resin and generally need to be similar to 1500 to 2000BTU heat.On the contrary, the steam cure of small diameter liners (6 ' '～12 ' '), solidifies every pound of resin and need to be similar to 700 to 1000BTU heat.
Even if occur that in the bottom of CIPP liner condensed fluid is gathered into the region in pond, described method also can realize the completely curing of CIPP with approximate 300 to the 500BTU heats of every pound of resin all the time.This why may, be because adopted steam blow, described steam blow can control steam eject position with eliminate thermal stratification and eliminate be gathered into pond condensed fluid to curing adverse effect.Described method also controls along the length of CIPP liner quantity and the position that steam sprays so that steam as condensed fluid or water vapor before the far-end from CIPP liner is discharged, every pound of steam is to the maximum heat of resin felt layers transmission.
As described herein, by the flexible pipe of steam injection end-enclosed, at flexible pipe described in the upset of the CIPP liner expanding, keep flat.Setting has the independent discharge mouth (or a plurality of floss hole) of control valve and discharges from the far-end of CIPP liner to control water vapor and condensed fluid.Described flexible pipe comprises along flexible pipe entire length interval a plurality of spouts that (arranging with certain size and interval) is set.By the Position Design of the described spout around flexible pipe circumference, be: no matter how flexible pipe rotates in the process that is placed in CIPP liner, along a plurality of spouts of hose length all by the bottom towards CIPP liner.This makes in whole cure cycle steam continuous injection to any condensed fluid that is gathered into pond.Inject more than steam in condensed fluid is heated to guarantee to solidify needed temperature by condensed fluid.
The closed end of steam discharge hose makes the internal pressure of the flexible pipe that injects higher than the inside solidification pressure of CIPP liner.Along with the length of the steam injecting along flexible pipe moves, steam is passed spout and forces to discharge, to form vapor film in CIPP liner inside.Along with steam moves away from the injection end of steam discharge hose, the pressure difference between the internal pressure of steam discharge hose and the internal pressure of CIPP reduces.Therefore the steam flow, spraying from each spout reduces along the length of steam discharge hose.
This has realized three things:
1. can extend the residence time of most of steam in CIPP liner, with to the maximum energy of resin felt layers transmission.
2. along with the discharge end of steam towards CIPP liner moves, increase extra energy continuously to vapor film, this has kept higher rate of energy transfer.
3. the steam carrying out to vapor film sprays and produces eddy current simultaneously, and this has eliminated thermal stratification and has promoted energy transmission.
Understand the physical property (diameter, length, thickness, resin and catalysis system) of CIPP liner and the available output in BTU per hour of boiler, in the cure cycle of the size that just can regulate spout with the recommendation with boiler, steam hourly is exported poundage and is matched.
Be readily understood that the steam cure resin that the method according to this invention can be utilized people to flow through and obtain beneficial effect.By implementing described method, can easily tubular member upset be passed through to existing pipeline.By arranging, can select the escape cock of unlatching and the tail end of the swelling bag in upset that discharge pipe is set, can keep the pressure in the liner of swelling bag and inflation, and can import steam in upset ingress, and can make the liner in vapor stream overcuring, to utilize more available energy in steam, than people, utilize circulating hot water to solidify cured resin significantly quickly.
As can be seen here, from the content that become by foregoing description clearly, above-mentioned purpose effectively realizes; And, due to for implementing said method, described product and described structure can carry out specific change under the premise without departing from the spirit and scope of the present invention, are therefore included in all the elements shown in above-mentioned explanation and accompanying drawing and all should be interpreted as illustrative and not restrictive.
It will also be appreciated that appending claims is intended to summarize the of the present invention all general and specific feature that this specification is described, and all statements that may fall into protection domain of the present invention.
Claims (4)
1. by upset flexible resin dip pipe, carry out a method for the existing pipeline of non-trenchless rehabilitation, comprise step:
The supply source of flexible resin dip pipe is provided;
Described flexible resin dip pipe is inverted into existing pipeline;
The flat hose of punching is connected in to the tail end of the described flexible resin dip pipe in upset;
The tapping equipment of the described flexible resin dip pipe that is provided for that vapor stream is crossed and has overturn;
The inside of the flexible resin dip pipe that steam is imported to described flat hose and overturn, and make described vapor stream cross described tapping equipment;
Make the resin solidification in described flexible resin dip pipe;
Under horizontal state, around the circumference of described flat hose, along the length of described flat hose, form a plurality of spouts, for the length of the flexible resin dip pipe along having overturn, scatter steam; And
Along the length of described flat hose, by described a plurality of spouts, steam is sprayed to the bottom to the described flexible resin dip pipe having overturn, and spray to any condensate pit of the bottom of the flexible resin dip pipe having overturn described in being formed at.
2. the method for claim 1, wherein along whole bottom lengths uperizes of described flexible resin dip pipe.
3. the method for claim 1, wherein imports described steam the inside of described flexible resin dip pipe, comprises to the vapor film uperize forming in described flexible resin dip pipe and produces eddy current.
4. the method for claim 1, wherein described steam is imported to the inside of described flexible resin dip pipe, to discharge end, move, comprise to the vapor film uperize forming in described flexible resin dip pipe, and when discharge end moves, to described vapor film, increase extra energy.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62484104P | 2004-11-03 | 2004-11-03 | |
| US60/624,841 | 2004-11-03 | ||
| US11/264,709 US7766048B2 (en) | 2004-11-03 | 2005-11-01 | Installation of cured in place liners with air and flow-through steam to cure |
| US11/264,709 | 2005-11-01 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580045775 Division CN101095008A (en) | 2004-11-03 | 2005-11-02 | Installation of cured in place liners with air and flow-through steam to cure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101329006A CN101329006A (en) | 2008-12-24 |
| CN101329006B true CN101329006B (en) | 2014-01-29 |
Family
ID=38992571
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580045775 Pending CN101095008A (en) | 2004-11-03 | 2005-11-02 | Installation of cured in place liners with air and flow-through steam to cure |
| CN200810144318.1A Expired - Fee Related CN101329006B (en) | 2004-11-03 | 2005-11-02 | Method for trenchless rehabilitation of lines through turning flexible resin immersion tube |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580045775 Pending CN101095008A (en) | 2004-11-03 | 2005-11-02 | Installation of cured in place liners with air and flow-through steam to cure |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN101095008A (en) |
| RU (1) | RU2362939C2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2479784C1 (en) * | 2011-09-13 | 2013-04-20 | Общество с ограниченной ответственностью "Научно-производственная фирма "Изотор" | Method for pipeline reconstruction |
| CN103899879B (en) * | 2014-04-16 | 2015-09-30 | 浙江凯胜园林市政建设有限公司 | For repairing device and the restorative procedure thereof of pipe-repairing interface |
| CN110617380A (en) * | 2019-07-07 | 2019-12-27 | 山东柯林瑞尔管道工程有限公司 | Pipeline repairing device and method for grouting lining |
| CN113531274A (en) * | 2021-08-16 | 2021-10-22 | 广东润球实业有限公司 | Pipeline non-excavation repairing method |
| CN114658952B (en) * | 2022-03-29 | 2022-11-08 | 广州易探科技有限公司 | Non-excavation prosthetic tractive device of shaping pipeline is moulded to heat |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204389A (en) * | 1995-11-09 | 1999-01-06 | 管道连接公司 | Method and apparatus for lining conduit |
| US6708728B2 (en) * | 2001-07-17 | 2004-03-23 | Insituform (Netherlands) B.V. | Installation of cured in place liners with air and steam and installation apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9806620D0 (en) * | 1998-03-28 | 1998-05-27 | Texon Uk Ltd | Calibration hose assembly and closure device and a method of conforming a tubular pipe liner |
| JP2000343609A (en) * | 1999-06-03 | 2000-12-12 | Shonan Gosei Jushi Seisakusho:Kk | Technique for lining pipe |
-
2005
- 2005-11-02 CN CN 200580045775 patent/CN101095008A/en active Pending
- 2005-11-02 RU RU2007118500/06A patent/RU2362939C2/en not_active IP Right Cessation
- 2005-11-02 CN CN200810144318.1A patent/CN101329006B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204389A (en) * | 1995-11-09 | 1999-01-06 | 管道连接公司 | Method and apparatus for lining conduit |
| US6708728B2 (en) * | 2001-07-17 | 2004-03-23 | Insituform (Netherlands) B.V. | Installation of cured in place liners with air and steam and installation apparatus |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2000-343609A 2000.12.12 |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2007118500A (en) | 2008-11-27 |
| RU2362939C2 (en) | 2009-07-27 |
| CN101329006A (en) | 2008-12-24 |
| CN101095008A (en) | 2007-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101146664B (en) | Exhaust and/or condensate port for cured in place liners and installation methods and apparatus | |
| KR101188048B1 (en) | Installation of cured in place liners with air and flow-through steam to cure | |
| US8038913B2 (en) | Installation of cured in place liners with dual gland air inversion and steam cure apparatus | |
| US6708728B2 (en) | Installation of cured in place liners with air and steam and installation apparatus | |
| EP0704294B1 (en) | A method for lining a manhole | |
| US6682668B1 (en) | Installation of cured in place liners with an endless reusable inflation bladder and installation apparatus | |
| CN101329006B (en) | Method for trenchless rehabilitation of lines through turning flexible resin immersion tube | |
| US7866968B2 (en) | Reusable inversion sleeve assembly for inversion of cured in place liners | |
| CA2836627A1 (en) | Dual gland air inversion and steam cure of cured in place liners |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1123842 Country of ref document: HK |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1123842 Country of ref document: HK |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20151102 |
|
| EXPY | Termination of patent right or utility model |