CN1218160A - Method of connecting conduits - Google Patents
Method of connecting conduits Download PDFInfo
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- CN1218160A CN1218160A CN 97122871 CN97122871A CN1218160A CN 1218160 A CN1218160 A CN 1218160A CN 97122871 CN97122871 CN 97122871 CN 97122871 A CN97122871 A CN 97122871A CN 1218160 A CN1218160 A CN 1218160A
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- pit
- rod member
- boring
- main pipe
- pipeline
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Abstract
The method concerned is for connecting a section of buried main conduit to a secondary conduit. For this purpose, a starting pit and a finishing pit ar dug, a drilling device comprising a series of rods to be placed end to end is lowered into one pit in a manner such as to drill along a horizontal axis at the level of or at a height close to that of the main conduit. Upon completion of the drilling,the secondary conduit is passed through the bore-hole in a manner such that an end portion is situated above the pit, this portion is fixed to a first region of a branch connector for connecting the two conduits and this end portion, equipped with its connector, is lowered into the pit and the connector is fixed to the main conduit.
Description
The present invention relates to the method at underground arrangement pipeline, it does not need to excavate costly trench.
Usually, the present invention is used to connect and is embedded in underground main pipe, pressure gas pipe for example, and with itself and second lateral, for example the pipeline in the building links to each other.
Each life or office have a large amount of under ground pipings with building, its supply or discharge water, gas and electricity or the like.
In the past,, to excavate trench usually, pipe laying in trench, is filled up moats then at underground arrangement pipeline.
Expensive so expensive, construction is dangerous, and not easy to operate.
At present, the method for known a kind of tubing does not need to excavate the trench that equates with the pipeline total length.
Therefore, borehole drill construction has adopted and has constituted the rod member string by a large amount of boring rod members and hole, and the end of rod member is connected, and for example is threaded, and pierces underground several meters from ground surface along the inclination route.In this case, drill bit is arranged on the front end of rod member string, can adjust penetration direction quite exactly, so that boring can be at first downward-sloping, continues boring to substantially horizontal again after the degree of depth that arrival is wished.
Before after boring finishes and with the rod member string, taking out, insert pipeline, for example, soft steel pipe or plastic tube.By special device, pipeline is fixed to the front end of rod member string, thereby utilizes the recovery movement of rod member string, pipeline is inserted in the hole that has got out.
Adopt this method at long distance range, for example 100 meters or longer, settle pipeline, use drilling equipment for this purpose, wherein must have downward-sloping tripod, so that be rod member string guiding, this device is huge, and heavy, has 2 tons of weights at least, because the part of the weight of borehole drill construction is pressed to drill bit, produce the active force that the rod member string is promoted forward.
But, when it accurately is communicated with building, will produce special problem, because in this case, the part of main service will be extended under the road surface usually, normally utilizes second lateral to link to each other with the building very near from the road surface.
Therefore, settle these laterals, the conventional method that makes them connect building is to excavate trench.
Known this technology exists defective now, and particularly it need move a large amount of cubic metres of earth and stone, then need carry out repair.
Therefore wish to utilize this technology, only need to get quite little hole on the ground, and trench is dug out at most of connecting tube place that no longer will be placed.
In at present known boring method,, in fact, be unsuitable for being communicated with the lateral of building at the underground rod member string that along inclined direction drives.
Adopt said method, can accurately be the boring guiding.But,, in boring, can have the danger that damages pipeline because distance wants connected main pipe too near.
In addition, boring must be at a underground point location, and it partly has sizable transversal discrepancy with respect to main pipe.Therefore, rig is installed in a relative side of road, and it is near whole road surface one side, and perhaps owing to transversal discrepancy, as the phenomenon of common generation, it always can not be satisfactory, and must block the relative road surface that connects with building.Only with regard to the workload of destroying road surface and redeck, just can not adopt this technology.
Be equivalent to second technical solution of wanting the trench of connected duct length in order the gratifying solution that can address the above problem to be provided, to the present invention proposes to avoid excavating, comprising:
Excavate starting point pit and terminal point pit, excavate one of them pit near main pipe, make the main pipe at this place be in clean conditions, another pit has the identical degree of depth basically;
Rig is set, and it comprises a series of boring rod members, and the end of described boring rod member is along axis setting from beginning to end, so that constitute boring rod member string, it is adapted at undergroundly promoting rod member forward by means of changeing the hole driving mechanism;
Described equipment and boring rod member move down, enter one of described pit, the horizontal dimension of pit is less, but be enough to make the people can operate the string of described equipment and rod member therein, described rod element is selected by this way, the axial length that is each rod element is shorter than the distance between the wall relative in the pit, is holed at relative wall place by the boring rod member in pit;
In pit, make the axis location of boring rod member string,, and be cross setting with respect to main pipe so that get out substantially horizontal hole, particularly level height quite near main pipe;
Along described axis boring, after two pits are communicated with, make second pipeline pass boring, so that the end of pipeline is positioned at the pit top at main pipe place;
The first area that connects two branching of pipes connectors is fixed to the end of this pipeline at this;
Make and describedly be furnished with connector pipeline end and drop in the pit;
The second area of described connector is fixed in the main pipe;
Fill and lead up pit.
Particularly the present invention's along continuous straight runs boring and settle pipeline in boring basically can closely possible little its surrounding environment of damage, and two quite little openings are particularly only arranged on ground.
Usually, starting point pit and terminal point pit have essentially identical cross-sectional dimension and height dimension on short transverse, i.e. the about 70cm * 40cm of horizontal dimension, its degree of depth 1m-1.5m.
Should be noted that the starting point pit vertically is positioned to want connected main pipe zone to solve two problems.
First problem after the lateral arrangement that is communicated with building finishes, forms the free space of operating component between main pipe and lateral, operate by remote-control apparatus at the top that is preferably in pit.Adopt conventional mode by cable operated excavator or employing specific process, as fluidics, vertically excavate, form the starting point pit, doing like this is reasonably, because the starting point pit preferably extends to the close lower position of wanting connected main pipe.
Second problem, want the connected main pipe and second lateral very close, it is vertical mutually, and one of them pipeline is positioned near the top of another pipeline or below, therefore can quite easily connect, and not need to clean along the distance of vertically growing of pipeline.Particularly under the situation of pneumatic tube and conduit pipe, can adopt trapezoidal ABAP Adapter or other ABAP Adapter.
When the starting point pit is holed, described main pipe extends in pit, can begin boring at several millimeters places above or below main pipe.
From the starting point pit, also can between the end points of the tie point of main pipe and lateral, carry out the work along rectilinear direction basically, advance to building always.In addition, along continuous straight runs begins to excavate usually, needs very little activity point of view during holing.This operating method can adopt the rod member string with suitable rigidity, and rod element is shorter, is generally 10cm-35cm, and it can along continuous straight runs be contained in may be (its horizontal equivalent is 40cm usually) in the pit of minimum dimension.
Should be noted that under the situation of starting working from such starting point pit, impact forming boring by current in underground high pressure with the drill bit place.In practice, the ponding of this rod member string back in the starting point pit is breakneck.
By very firm rod member string, particularly adopt the rod member of rigid material, be the very large pipe fitting of wall thickness at least, under pressure, it can make the rod member string advance, and finishes boring.This method is particularly suitable for carrying out work from pit, because driving mechanism advances the rod member string by pressure, described driving mechanism can be supported on the wall of pit.
The rod member string rotates in this case, so that at the front end grinding soil material of drill bit, this is useful under a stable condition.But, must be able to make angle that the rod member string rotates less than 360 °, this is because the direction of advance of boring can be according to the asymmetric oblique angle at rod member string top with respect to the angular orientation change of drilling axis.
In order to pull out the boring rod member along the position at drilling axis place, the along continuous straight runs setting basically of described drilling axis.Can also insert new rod member from the supply storehouse of starting point pit along drilling axis, perhaps extract rod member out along this horizontal position.This is difficulty very, for example, in the process of feed bars, produces obstruction owing to the direction that connects rod member changes, and this blocking phenomenon almost completely can not be avoided.
As mentioned above, boring driving mechanism itself can provide along drilling axis direction Driving force forward.The direction of this Driving force is delivered to another pit from a pit along the longitudinal, and it is parallel to drilling axis, and at least along rod member length direction independently.Boring initial position and rod member that the boring driving mechanism is preferably in the starting point pit load/draw back between the withdrawn position of device region, can move along a direction or another direction.Described rod member loads/draws back device and is arranged on the relative wall.
Preferably the generation type of starting point pit is such, the below that the main pipe that connect is positioned at rod member and loads/draw back device, and at this, the boring driving mechanism needs sizable space, and it is arranged on the position at main pipe place, and main pipe thereunder extends.
The relevant consecutive steps that relates to boring asks the reader referring to F.P. FR-A-2738617, FR-A-2738614, and FR-A-2738615 is comprising the content of connecting tube.
Relevant more detailed description of the present invention is provided with reference to the accompanying drawings.
Fig. 1 is the stereogram under the general normal operations state.
Fig. 2 is the sectional view in the amplification of below ground serviceability.
Fig. 3 a and 3b are respectively the side views of representing the upper and lower part of the rig that uses in the present invention.
Fig. 4 a and 4b are respectively the front end view (towards drilling axis) corresponding to the same section shown in Fig. 3 a and the 3b.
Fig. 5 is the plan view of rig.
Fig. 6 represents the then operating procedure under the serviceability shown in Fig. 1 and 2.
Fig. 7 is 1/2nd sectional views and 1/2nd external frame figure, and its expression is used for the tube connector that secondary connects main pipe.
Fig. 8 and 9 is two ordinary view that are used to locate with the device of connecting tube.
Fig. 1 represents the operational site, comprising the small rut 200 that digs out on the ground, makes the on-the-spot clean enough of pipeline.Described pipeline for example, can be to carry out the gas piping that secondary connects by line 120 expressions.Pit 200 links to each other with the drilled tunnel 202 of below ground, and described passage 202 is communicated with second pit 204 that is positioned at road 206 opposite sides.As shown in FIG., the small dimensions limit of pit 200 size of work-yard.Road 206 can not be invaded in described work-yard, and only occupies the very zonule on walk 28, and this zone is mutually opposed with second pit 204 on the walk of the opposite side of road 206.The horizontal sectional area of first pit is preferably less than the shared area in the work-yard of common same type, and work facility all in this work area all must be put into it, so that work in less than 1 square metre hole at area.For example, the area of pit is 40cm * 70cm, and degree of depth 1m is proper.The sectional area of pit 204 can be contrasted with pit 200 mutually with the degree of depth.
Fig. 2 is the view that amplifies, and it has represented first pit 200 and second pit 204 that are separated by road 206 in detail.
In Fig. 2, dot and dash line 202 and horizontal drilling axis 202a represent to install second pipeline of perforation, do not need to excavate the trench across road 206.
Usually, axis 202a is cross setting in an embodiment, and it is perpendicular to the axis 120a of main pipe 120.
Should be noted that pit 200 excavates by this way, promptly, clean around making main pipe 120, and extend to the pipeline below, make pipeline 120 near the bottom surface 201 of pit 200 and the rear wall 201b of vertical, and away from the antetheca 201a of vertical, boring 202 is positioned at antetheca, and perpendicular to axis 120a.
Shall also be noted that the height difference (h) between orthogonal horizontal axis 120a and the 202a is preferably substantially equal in pit 200, the connection height between the main pipe and second pipeline, that is, and several centimetres or tens centimetres usually.For example, gas divides the height of tube connector.
Fig. 3 a, 3b, 4a, 4b and 1 boring 202 of 5 expression employing equipment.
Boring tower 11 is made of metallic member, and parts two intussusceptions, that can move mutually along vertical are preferably arranged.
Though, can be from pit 204 towards pipeline 120 borings, in this case, the moveable part of boring tower 11 enters pit 200 downwards, for example, by manual capstan winch (not shown).In order to reach this purpose, can lead along vertical, for example, auxiliary stand is set above pit, and by upper saw pulley, slide plate or the like.
Below accompanying drawing 3a, can see be positioned at left sidewall 201a horizontal drilling axis 202a and boring 202.
The boring tower of pit or boring frame 11 comprise the cross section of main pipe 120, and the pit of opening extends downwards along sidewall, make the bottom surface be positioned at main pipe 120 below.Two possible line sizes in Fig. 3 a, have been represented.
According to the present invention, wherein the primary component of equipment all is placed in the boring tower 11, and it comprises:
Road loader/withdrawal device 12, it can be arranged on the rod member string 6 of certain-length in the boring 202 rod element and rod element are matched in its end, thereby increases or taking-up rod element 7;
The rod element 7 that is connected on the rod member string 6 is wherein deposited in the supply storehouse 19 of rod element;
And skewed slot 24, rod element falls into skewed slot 24 after the rod member string is extracted out, so as by the operator at this cleaning rod element, inspection bar damage of elements situation is lubricated processing then, prepares to reuse.
For the ease of understanding accompanying drawing, do not describe the rod member string that is provided with along drilling axis 202a among Fig. 3 a, 3b, 4a, the 4b.Can see the rod element 6 that is made of rod element 7 on the contrary in Fig. 5,7 one of rod elements are arranged on another back, in their end by being threaded togather.
Each rod element 7 has axial length L 1, shown in Fig. 3 a and 5, can be clear that this length L 1 is significantly smaller than the antetheca 201a of pit 200 and the distance between the rear wall 201b.In described pit 200, be provided with drilling equipment, shown in Fig. 3 a, length L 1 also less than between the front element 11a of the vertical of boring tower 11 in pit and the posterior elements 11b along the length L 2 of the shaft centerline measurement that is parallel to rod element 7.
In Fig. 3 a, a rod member 7d in the rod element is by the cover 34 that is threaded of the motor 13 that is threaded, and described motor 13 belongs to loading/draw-out device.
Each screwed rod element 7 also is included in the circular groove 18 of its circumferential surface.
Shown in Fig. 3 a, loading/draw-out device 12 moves along vertical basically.Therefore the rod member 17d of boring can move along vertical in space 10 '.Boring driving mechanism 9 slides on guiding element 29 towards the direction of drilling axis 202a.Promote boring driving mechanism 9 by hydraulic piston 30.
In order to exert pressure to rod member string 6, it is holed forward, be used to drive the last rod element 7 of driving mechanism 9 clampings of boring rod member string, promptly this rod element is positioned at the zone of boring tower 11, boring driving mechanism 9 integral body towards left to moving, by the position shown in Fig. 3 a.Therefore the driving mechanism 9 of holing can move back and forth between antetheca 201a and relative rear wall 201b.
In order to move along driving axis 202a, driving mechanism 9 can carry out the rotation of rod member string simultaneously with straight line motion, perhaps separately carries out.For reaching this purpose, be provided with and rotate clamp device 33 clamping rod member strings.Described clamp device 33 can rotate with respect to housing 35, and described housing 35 is coaxial with drilling axis 202a.Groove in housing 35 and the non-symmetry structure acts synergistically on the summit of rod member string, adjusts its orientation direction.
The boring driving mechanism comprises that another is called the clamp device 32 of " separately device ", and it is arranged on the place ahead of rotating clamping element 33, and keeps the rod member string to fix, and rotates with respect to the housing 35 of boring driving mechanism.
Another clamp device 21 also is fixed on the boring tower 11, and it nestles up boring 202 with respect to rod member string 6.Shown in Fig. 4 a, this clamp device 21 also is horizontal clamping element by two with the rod member string and constitutes.These clamping elements are made of fluid power cylinder 21 ', and one of end of described fluid power cylinder 21 ' is fixed on certain position with respect to boring tower 11.
In the lower end of boring tower, be positioned at the below of boring driving mechanism 9, the clamping ram 22a, the 22b that extend along drilling axis 202a direction nestle up boring tower 11 settings with standard mode.These rams comprise pressing plate 25 separately, and described pressing plate 25 is arranged on the free-ended position of its piston rod.Because boring tower 11 is cover outside this zone does not have, if desired, drive by hydraulic pressure installation, these piston rods that clamp ram 22 are extended, oppress the sidewall that these pressing plates 25 rely on pit 200, so boring tower 11 is fixed in the sidewall of pit 200.Therefore, the overall fixed of boring tower 11 is in pit 200, and is along drilling axis 202a, extremely important with respect to boring 11 aligning directions by boring driving mechanism 9 when this begins for boring.
Loading/draw-out device 12 comprises the motor 13 that is threaded sleeve 34, and described screw shell preferably is set directly on the output shaft of motor.This sleeve has suitable screw thread, so as with the threads engaged of rod element 7 tail ends, thereby they can be installed together mutually.Shown in Fig. 3 a, preferably the conical surface along boring rod member 9 is provided with outside thread, preferably uses the circular arc screw thread in the case.Respective threads sleeve 34 is provided with corresponding internal thread, makes motor 13 aim at spin axiss, the described spin axis 202a that parallels to the axis.Therefore motor 13 can move along the direction of drilling axis 202a with perpendicular to the direction of drilling axis.
For reaching this purpose, motor 13 is fixed on the support of motor 16.Under the effect of running roller 36, support 16 can move along drilling axis 202a.Described running roller 36 comprises the circular groove that is provided with along circumference separately.Running roller 36 moves along two shafts, and preferably described these two shafts are separated along vertical, as the guiding device 17 of support of motor.These guiding devices 17 are fixed on the carrier 14, are preferably under the effect of running roller 39, and carrier 14 can move along vertical along guiding device 15.Guiding device 15 is made of shaft, and shaft 15 separates certain distance along the direction of the drilling axis 202a of boring tower 11, near sidewall 201b.
Under the effect of the lifting carrier 14 of loading/withdrawal device, motor 13 moves along vertical, so that under the effect by the clamp device 23 that is arranged on capstan head 11 upper areas, aims at drilling axis 202a in the described minimum or extreme higher position of Fig. 4 a and 4b.This clamp device 23 is worked under the effect of fluid power cylinder 23 ', and preferably fluid power cylinder 23 ' is two-way ram.Shown in Fig. 3 b, be preferably in the position below on the surface 5 on walk 208, between two positions of height of motor 13, be provided with from supplying with the position that new boring rod member is extracted in storehouse 19 out along the route of motor 13.In supplying with storehouse 19, has ready new boring rod member 7a, 7b, 7c.Described supply storehouse is made of the housing 20 of definite shape, and it is arranged on oblique position, and its gradient reaches at utmost in the plumb position.Boring rod member 7 is put into from the top of supplying with the storehouse.
Supplying with the storehouse bottom, housing 20 comprises the adjacent part of boring rod member 7a with minimal face, and this part is opened in the rear end of rod member, facing to motor 13.
Therefore, supply with storehouse 19 and be preferably in the extension of 5 tops, ground, and outwards or laterally extend, so that the operator can easily fill rod member 7 in supplying with storehouse 19 with respect to boring tower 11.
Supply with storehouse 19 when motor 13 alignings are contained in to be positioned at, when being in the boring rod member 7a that extracts the position, motor 13 moves along the longitudinal along its rotation axis, the rotation of simultaneous screw shell 34, and 7a is threaded with the boring rod member.Act on this boring on rod member gravity or be contained under the action of gravity of supplying with the boring rod member 42 in the storehouse 19 the rod member 7a that prevents to hole rotation in a large number.Subsequently, motor 13 together descends with boring rod member 7a, goes to boring drive unit 19, this rod member is transported to rod member string 6 connects.
Skewed slot 24 is positioned at the top, lower end of supplying with storehouse 19.Supply storehouse 19 is positioned on the vertical conveyor line of boring rod member.Therefore, skewed slot 24 is carried rod member below gripping device 23, and the upper end of skewed slot be positioned at gripping device below.Under the effect of loading/draw-out device 12, lift boring rod member 7 by gripping device 23, move to skewed slot 24 to the side thus, it is outward-dipping along conveying circuit around rotational axis.Then, skewed slot 24 overturns under action of gravity, tilts to position shown in Fig. 4 b.At this operating position, first boring rod member 7k by in the rod member of gripping device 23 clampings unclamps thereafter at gripping device 23, falls in the skewed slot 24, and is rolled to boring tower 11 1 side foreign sides, is received by the operator at this rod member, so that check or store.
The operating process of this rig is described below.
In description, drilling operation begins, and continues.
At first, the carrier 14 of loading/draw-out device 12 moves to the top position.Then, motor 13 moves to the position, back, near rear wall 201b.
When the screw shell 34 that is carried by support 16 is aligned in the screwed rod member 7a of of below in the rod member of supplying with in the storehouse 19 in heaps, screw shell 34 moves forward under the effect of piston 37, motor 13 rotates simultaneously, is threaded with rod member 7a up to screw shell 34.
Two spring 38a, 38b provide the compensating motion that needs for moving back and forth of piston.
Then, carrier 14 descends along guiding element 15 with the rod member that is threadedly connected on the sleeve 34, and shown in Fig. 3 a, rod member 7d is in transfer position.
When they arrived drilling axis, delivery support 16 moved towards the antetheca 201a of pit 200, and the front end of crawled rod element contacts with the tail end of last rod element that is arranged in rod member string 6 herein, as shown in Figure 5.
Under the rotary action of motor 13, crawled rod element is threaded with last rod element of rod member string.During being threaded, last rod element in the clamping element 33 clamping rod member strings.
Then, clamping element 33 unclamps, and simultaneously driving mechanism 9 moves backward to rear wall 201b, up to clamping element 33 around and clamp crawled, just be connected to the rod element of rod member string 6 rear ends.At this moment, sleeve 34 from then on rod element unclamp screw thread.
When mobile backward, clamping element 21 clamps rod member strings 6 and prevents that it from moving, and particularly, prevents that it from moving backward at above-mentioned clamping element 33 and the driving mechanism 9 of unclamping.
Then, clamping element 21 unclamps, and under the effect of piston 30, the rod member string advances along the drilling axis direction, and at this moment, clamping element 33 still clamps, so that make the rod member string in the process of advancing, during disalignment, fine rotation is arranged.
During this period, loading/draw-out device 12 rises once more and the supplies with storehouse 19.
Should be noted that sensor 28a, 28b, 28c are arranged near boring driving mechanism 9 places with near rod member string 6 places with respect to drilling axis 202a, monitor so that continue.Particularly, if circular groove 18 leaves the zone of sensor 28a, sensor 28a sends error signal, and indication is broken down.
In case boring is finished, and according to above-mentioned supply operating process, further draws back rod element 7 in the opposite direction, thereby draws back the rod element 7 foremost, that enter second pit 204 that is positioned at rod member string 6.
In the operating process of further drawing back rod element, simultaneously in the hole that gets out, utilize usual manner, second pipeline 210 is fixed in the front end of rod member string 6, be inserted in the boring 202, as shown in Figure 6.
For fear of damaging second pipeline 210, for example, quite Rou Ruan plastic pipe as polyethylene pipe, in this operating process, can provide conventional protective equipment.
After the pipeline total length was passed boring 202, the approach end 210b by the operator repairs second pipeline 210 above pit 200 as shown in Figure 6, for the work-yard cleaning, had removed rig from pit.
In addition, the second end 210c of same pipeline 210 passes from second pit 204, near the connection set 60 of the sealing entering, and it also is positioned on the floor surface, and constitutes the distributor disk that is connected to the user.
In this stage of adopting the method, adopt routine techniques, as welding, being threaded ... at the side of pipeline 210 join domain 82, connector 80 shown in Figure 7, that brand name is SEIG (having a detailed description in F.P. FR-A-2738617 and FR-A-2738614) is connected with lateral 210.
Therefore, the operating process of connecting tube is finished at ground surface.
Fig. 8 represents the embodiment of structural member 100, and it comprises the first vertical supporting frame 110, and described vertical supporting frame 110 comprises two perpendicular elements 110 by the rope connection that are parallel to each other.Support frame as described above has guiding slider 112a, the 113a on the perpendicular elements of being fixed on.These sliders help construction tool to slide into pit bottom along perpendicular elements, and lateral 210 is connected to (not shown) on the main pipe 120.
In the time of in structural member is positioned pit, the intussusception leg is fixed on the upper end of support 110, and described support 110 is on each perpendicular elements, and it can make structural member be in steady state with respect to ground.
Bottom at support 110, support arm 120a can slide with respect to perpendicular elements, and adjust along vertical in this position, so that match with the different-diameter of wanting clamped pipeline, finally form inverted V-shape in the lower end of support arm 120a, for example shown in the code name 124a, inverted V-shape 124a is located on the pipeline.
This structural member 100 also comprises the bottom of support.Support device 130 comprises the bearing 134 that two-part 136a by second V-shape constitutes, and it, forms precision with pipeline and be located by connecting reliably so that between them towards the first V-shape 124a.
Carry out actually before main pipe 120 and lateral 210 step of connecting, must be at the fixing region clean main pipe of bifurcation connector 80.
Particularly, when main pipe is made by metallic material, generally be coated with one deck protection resin, this resin must be removed, so that adopt satisfied mode that bifurcation connector is positioned on the main pipe in the pipeline appearance.
At first, adopt cleaning tool to carry out the operation of cleaning main pipe 120, it will descend and enter in the pit 200, and then rises utilization structure spare 100.Description for this instrument sees also F.P. FR-A-2738617 and FR-A-2738614.
After main pipe 120 cleanings finish, first cleaning tool is extracted out from pit 200.As shown in Figure 9, by second location and setting tool 140 end of the lateral 210 that is connected bifurcation connector 80 is descended and enter pit 200.In order to guarantee to make connector 80 to be properly located in second semicircle (shape of a saddle) join domain, 84 places in the main pipe 120, simultaneously apply pulling force at the second end 210c of lateral 210, its opening from pit 204 is stretched out, so that reserve corresponding " residue length ", as shown in Figure 6.
Second location or setting tool 140 comprise the hollow shaft 142 with inner chamber body 143 as shown in Figure 9, and inner chamber body 143 is passed the length of whole hollow shaft 142.Shown in the bottom of cavity comprise the device of temporary transient clamping connector, in this case, shown in this device constitute by internal thread 144 so that receive the screw thread on bifurcation connector 80 tops.
The top of connector 80 is detachable to be fixed on second location or the setting tool, for example by being threaded.Along with connector 80 contacts at semicircle place 84 with pipeline 120, axle 12 rotates with respect to fixing-assembly 146, and it makes described axle move vertically with respect to structural member.Therefore, between anti-leak seal 86 that lateral 80 contains and pipeline 120, apply active force, wherein fluid can flow (if the fluid of conveying is provided).
When between connector 80 and pipeline 120, applying active force, the cavity (not shown) of locking is positioned the threaded connection place of axle 142 upper ends by screw thread.In case produce contact between lateral 210 and main pipe 120, the cavity of this locking can be worked under the fluid load effect.
Described locking cavity system can adopt trade mark to be called PIEDFORT, the machinery of model M80.
After having checked the leakproof location, main pipe 120 is communicated with lateral 210.
Pipeline 21O also can be cut off at relative length one side place, adopts the mode of anti-leak to be connected with connection set 60 then.
When the locking cavity was in place, the 3rd instrument (not shown) pierced through main pipe 120, and guiding is communicated with the inner chamber body 143 of second instrument 140.
When pipeline is pierced, regain the 3rd instrument, finish fixedlying connected between last connector 80 and the main pipe.For arriving this purpose, in the leakproof process, introduce the 4th setting tool (not shown), it can pass the inner chamber body of second instrument 140 in the mode that is free to slide.
In case connector 80 is fixed, before the leakage of checking between the pipeline 120 and 210, draw back the 4th instrument.
Then, in pit, regain second location and setting tool 140 and the structural member 100.
For foregoing placement appropriate in pit 200 second pipeline 210 it is connected with main pipe 120, please refer to F.P. FR-A-2738617 and FR-A-2738614.
Before sealing pit 200, carry out last operation, that is, brush protection resin layer that when beginning to construct, remove, equivalence.
For reaching this purpose, the 5th instrument that can adopt F.P. FR-A-2738615 and FR-A-2738614 to provide.
The manipulator that these are last is from pit 200,204, perhaps pit around remove after, recharge pit, at this moment, second pipeline has correctly connected and has finished, and does not need to form the trench of crossing over road 206.
Claims (2)
1. one kind is connected to the method that is embedded on the underground main pipe (120) with second pipeline (210), and its step comprises:
Excavate starting point pit (200,204) and terminal point pit (204,200), excavate one of pit near main pipe (120), make the main pipe (120) at this place be in clean conditions, another pit has the identical degree of depth basically;
Rig (10) is set, and it comprises a series of boring rod members (7), and the end of described boring rod member (7) is provided with along axis (202a), so that be formed in the string of the underground boring rod member (7) that is suitable for promoting forward;
Described equipment (10) and boring rod member (7) move down, enter described pit (200, one of 204), the horizontal dimension of pit (200,204) is less, but is enough to make the people can operate the string of described equipment (10) and rod member (7) therein, described rod element (7) is selected by this way, be that rod element (7) is independently, its axial length is than the wall in the pit (201a) and the distance between the wall (201b) is short relatively, is holed from wall (201a) by boring rod member (7) in pit;
In pit (200,204), make axis (202a) location of boring rod member string,, and be cross setting with respect to main pipe so that get out substantially horizontal hole, particularly level height quite near main pipe (120);
Along the boring of described axis, after two pits are communicated with, make second pipeline (210) pass boring (202), so that the end of pipeline (210b) be positioned at above the pit, the part of described main pipe (120) is arranged on herein;
Fix at this, connect the end of second pipeline (210) and the first area (82) of bifurcation connector (80), thereby connect two pipelines;
The described pipe end (210) that to be furnished with connector (80) drops in the pit;
The second area (84) of described connector is fixed on the main pipe (120);
Fill and lead up pit (200,204).
2. in accordance with the method for claim 1, it is characterized in that: starting point pit (200) is located substantially on the top, plumb position of main pipe (120) part, adopt described rig (10) from then on pit (200) hole towards terminal point pit (204).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97122871A CN1103892C (en) | 1997-11-06 | 1997-11-06 | Method of connecting conduits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97122871A CN1103892C (en) | 1997-11-06 | 1997-11-06 | Method of connecting conduits |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1218160A true CN1218160A (en) | 1999-06-02 |
| CN1103892C CN1103892C (en) | 2003-03-26 |
Family
ID=5176907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97122871A Expired - Lifetime CN1103892C (en) | 1997-11-06 | 1997-11-06 | Method of connecting conduits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1103892C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457853B (en) * | 2008-11-20 | 2012-04-25 | 江苏广宇建设集团有限公司 | Non-digging tube-pulling construction method |
| CN104005723B (en) * | 2007-02-23 | 2017-09-08 | 阿特伍德海洋有限公司 | Simultaneous tubular handling system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE43694T1 (en) * | 1985-06-25 | 1989-06-15 | Tokyo Gas Co Ltd | ATTACHMENT FOR A BRANCH PIPE. |
-
1997
- 1997-11-06 CN CN97122871A patent/CN1103892C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005723B (en) * | 2007-02-23 | 2017-09-08 | 阿特伍德海洋有限公司 | Simultaneous tubular handling system |
| CN101457853B (en) * | 2008-11-20 | 2012-04-25 | 江苏广宇建设集团有限公司 | Non-digging tube-pulling construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1103892C (en) | 2003-03-26 |
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