CN204476277U - A kind of non-excavation laying pipeline reamer and reaming assembly of pulling back - Google Patents
A kind of non-excavation laying pipeline reamer and reaming assembly of pulling back Download PDFInfo
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- CN204476277U CN204476277U CN201520126848.9U CN201520126848U CN204476277U CN 204476277 U CN204476277 U CN 204476277U CN 201520126848 U CN201520126848 U CN 201520126848U CN 204476277 U CN204476277 U CN 204476277U
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Abstract
The utility model relates to a kind of non-excavation laying pipeline reamer, and it comprises drill body, and the middle part of drill body is provided with multiple cutting unit be evenly distributed on outside drill body; The through hole for having mud jacking liquid to discharge drill body inside is provided with between adjacent cutting unit; The port of export build-in of some through holes has nozzle.A kind of no-dig technique condition underground pipelines lays reaming assembly of pulling back, and it comprises impactor, sealing liquid joint and above-mentioned reamer; One end of reamer is connected by thread seal with between impactor, and its other end is connected by thread seal with sealing liquid joint.The beneficial effects of the utility model are: utilize the utility model implement in rock pipe installation pull back reaming time, the rotary-percussive drilling based on hydraulic impacter and reamer can be realized simultaneously, the Alternative reaming drilling method that high-pressure spray assists detritus to be coupled can also be realized, can effectively be lifted in rock implement no-dig technique pipe installation pull back reaming time operating efficiency.
Description
Technical field
To pull back when the utility model relates to pipeline installation in non-excavating construction the equipment in reaming stage, particularly relate to a kind of non-excavation laying pipeline reamer and reaming assembly of pulling back.
Background technology
No-excavation construction method refers to the technology detecting, check, lay, repair and change various underground utilities under the condition of not excavating earth surface; carry out the laying of the pipelines such as oil gas/water supply/gas flue, cable, communication line, renewal and reparation under can being widely used in the conditions such as highway crossing, railway, building, rivers and lakes, paleovolcanic structure district, there is advantages such as not affecting traffic, not welding, short construction period, integrated construction cost is low, social benefit is remarkable.
Under normal circumstances, first Technology of Directional Drilling is adopted to creep into a pilot hole, be less than the pipeline to be laid of reamer subsequently at the large diameter reamer of rear end changing-over of drill string and diameter, while reaming of pulling back, pipeline together drawn in boring, complete the pipelaying work under no-dig technique condition.For carry out in rock no-dig technique condition underground pipelines lay pull back reaming time, the reamer of current employing (returning enlarging aiguille) mainly comprises that gear wheel returns enlarging aiguille, hobboing cutter returns enlarging aiguille, pick returns first-class three classes of counterboring, and they are mainly using carbide alloy as the cutting element of drill bit; The reaming drilling method of current employing, mainly to rely on rig to drive drilling tool pivotal mode to carry out ream operation, the Cutting Rock ability of the reaming drilling efficiency that the method obtains and existing reamer is all limited.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of non-excavation laying pipeline reamer and reaming assembly of pulling back, a nozzle is provided with between the cutting unit that every two circumferences are adjacent, the flushing liquor constantly circulated in direct circulation mode can high pressure (the being greater than 10MPa) jet of forming energy Relatively centralized after jet expansion at a high speed (being greater than 40m/s) ejection under certain pump function, and it can effectively assist reamer realization to creep into the reaming of rock.In addition, in the front end of reamer by the hydraulic impacter that is threaded, this hydraulic impacter can be the suitable any type of specification.Utilize the utility model implement in rock no-dig technique condition underground pipelines lay pull back reaming time, the Alternative reaming drilling method that rotary-percussive drilling and high-pressure spray assist detritus to be coupled can be realized simultaneously, effectively can be lifted in rock and implement no-dig technique condition underground pipelines and lay operating efficiency when pulling back reaming.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of non-excavation laying pipeline reamer, it comprises the drill body of through, and the middle part of described drill body is circumferentially provided with multiple cutting unit be evenly distributed on outside described drill body; The skewed through hole having mud jacking liquid to discharge for constantly being circulated described drill body inside is provided with between adjacent described cutting unit; The port of export build-in of a described through hole is had at least to have nozzle; Described cutting unit comprises cutting element, steel body and impregnated with diamond bar; Described steel body is fixed on the periphery outside described drill body; Described cutting element build-in is on described steel body; Described impregnated with diamond bar is arranged on the outside of described steel body.
Further: described nozzle and described through hole one-body molded, or described nozzle by the fixed form build-in of screw thread, welding or interference fit in the port of export place of described through hole.
Further: the angle between the axis of described through hole and the axis of described drill body is 30 ° to 60 °.
Further: described cutting element adopts PDC, CBN, Si Lawujiqi, TSP, PCD material to make.
Further: one end of described drill body is provided with the convenient screw thread connecting impactor; The other end of described drill body is provided with the convenient screw thread connecting sealing liquid joint.
Further: the inner position on the lower side of described drill body is provided with the bottom liquid islocation plate for intercepting its central passage; One end of described drill body is provided with the screw thread for connecting impactor; The other end of described drill body is provided with the screw thread for being connected with transfer gear, drill string or finished product pipeline.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of reaming assembly of pulling back for pipeline installation under no-dig technique condition, and it comprises impactor, sealing liquid joint and above-mentioned reamer; One end of described reamer is connected by thread seal with between described impactor, and the other end of described reamer is connected by thread seal with described sealing liquid joint.
Further: described impactor is hydraulic impacter.
Further: the inside of described sealing liquid joint is provided with shutoff has mud jacking liquid and the middle part liquid islocation plate also upwards can accumulated in the central passage inner product accumulation of energy of reamer.
Further: described sealing liquid joint is provided with the screw thread for being connected with transfer gear, drill string or finished product pipeline away from one end of described reamer.
The beneficial effects of the utility model are: utilize the utility model implement in rock pipeline installation under no-dig technique condition pull back reaming time, both the impact rotating reaming that can simultaneously realize based on hydraulic impacter and reamer was crept into, the Alternative reaming drilling method that high-pressure spray assists detritus to be coupled can also be realized, can effectively be lifted in rock implement no-dig technique condition underground pipelines lay pull back reaming time operating efficiency.In addition, continue to provide the effect of shock loading to drilling tool owing to laying hydraulic impacter when reaming of pulling back is crept at no-dig technique condition underground pipelines, the generation of the accidents such as the drilling tool bit freezing that may occur in reaming drilling process can be alleviated to a certain extent, the effect of drill pipe release can be played.
Accompanying drawing explanation
Fig. 1 is the threedimensional model schematic diagram that no-dig technique condition underground pipelines lays reaming assembly integral of pulling back;
Fig. 2 is that no-dig technique condition underground pipelines lays the threedimensional model schematic diagram that each isolation of components of reaming assembly comes of pulling back;
Fig. 3 is that the threedimensional model axle of reamer body part measures intention;
Fig. 4 is the threedimensional model elevation of reamer body part;
Fig. 5 is the threedimensional model sectional view of reamer body part;
Fig. 6 is the nozzle build-in reamer threedimensional model schematic diagram that rear composition is complete in reamer body part;
Fig. 7 is the nozzle build-in reamer threedimensional model sectional view that rear composition is complete in reamer body part;
Fig. 8 is that the threedimensional model axle of nozzle measures intention;
Fig. 9 is the threedimensional model sectional view of nozzle;
Figure 10 is that the threedimensional model axle of sealing liquid joint measures intention;
Figure 11 is the threedimensional model sectional view of sealing liquid joint;
Figure 12 is the threedimensional model sectional view after reamer is connected with sealing liquid joint;
Figure 13 is the threedimensional model sectional view of the reamer body part of another embodiment;
Figure 14 is the nozzle build-in reamer threedimensional model sectional view that rear composition is complete in reamer body part of another embodiment.
In accompanying drawing, the parts representated by each label are as follows:
1, impactor; 2, reamer; 3, sealing liquid joint; 21, upper end connecting thread; 22, cutting unit; 221, cutting element; 222, steel body; 223, impregnated with diamond bar; 23, through hole; 24, lower end connecting thread; 25, nozzle; 251, liquid flow inlet; 252, fluid outlet; 26, bottom liquid islocation plate; 31, upper screw thread; 32, middle part liquid islocation plate; 33, lower screw thread.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
First embodiment:
As shown in Fig. 3 to Fig. 9, a kind of non-excavation laying pipeline reamer 2, it comprises the drill body of through, and the middle part of described drill body is circumferentially provided with multiple cutting unit 22 be evenly distributed on outside described drill body; The skewed through hole 23 having mud jacking liquid to discharge for constantly being circulated described drill body inside is provided with between adjacent described cutting unit, one end of described through hole 23 is communicated with the central passage of described drill body inside, and the other end of described through hole 23 is communicated with the outside of described drill body; Nozzle 25 is had at the port of export build-in of some described through holes 23, nozzle 25 is the straight type nozzle of common cone, for nozzle 25 mentioned in the utility model, be not limited to the structure of the straight type nozzle of common cone, also can use other nozzle arrangements that can produce high-pressure spray and patterns.In the present embodiment, the number of nozzle 25 is consistent with the number of through hole 23, and namely the port of export place build-in of each through hole 23 has a nozzle 25.
As shown in Figure 3, reamer 2 is the main tool of cutting fractured rock, and its top is provided with upper end connecting thread 21, and its bottom is provided with lower end connecting thread 24.Its top is connected with impactor 1 by upper end connecting thread 21; Middle part is the reamer body part of ring-type, primarily of several cutting units 22 and through hole 23 circumferentially uniform formation, cutting unit 22 is wherein the primary structures cutting rock arround broken hole wall, cutting unit 22 is made up of cutting element 221, steel body 222 and impregnated with diamond bar 223, cutting element 221 build-in forms the main body of cutting unit 22 in steel body 222, described cutting element 221 adopts PDC material to make, and cutting element 221 also can adopt other material being suitable for cutting fractured rock such as CBN, Si Lawujiqi, TSP, PCD to make.Impregnated with diamond bar 223 is laid in the gauge of outside for holing of steel body 222.Described steel body 222 is fixed on the periphery outside described drill body, and described steel body 222 also can be one-body molded with described drill body.
As shown in Figure 8, Figure 9, the middle part of described nozzle 25 is provided with inner chamber, one end of described nozzle 25 is provided with the liquid flow inlet 251 with described intracavity inter-connection, the other end of described nozzle 25 is provided with the fluid outlet 252 with described intracavity inter-connection, and the diameter of described liquid flow inlet 251 is greater than the diameter of described fluid outlet 252.Rig suitable drilling tool rotary torque is provided and pull back reaming the pressure of the drill time, under the drive of drill string, reamer 2 can turn round at a high speed and cut rock arround broken hole wall and realize reaming and creep into, and the mud jacking liquid that has simultaneously constantly circulated in direct circulation mode (preferably adopts low solid phase or unfixed phase slurry.Wherein, the low solids mud: refer to clay content (by weight) < 10%, or the mud of (by volume) < 4%; Unfixed phase slurry: refer to and do not add clay, only by the dispersion of organic high molecular polymer and water mixed preparing.) flow into its inner chamber from the liquid flow inlet 251 of several nozzles 25, and spraying at a high speed by fluid outlet 252 high-pressure spray that formed, also can to carry out (in advance) erosion in advance to rock arround hole wall broken, carry out reaming creep into realize auxiliary reamer 2, effectively can promote the operating efficiency that reaming is crept into.
As shown in Figure 7, described nozzle 25 is one-body molded with described through hole 23, or described nozzle 25 by the fixed form build-in of screw thread, welding or interference fit in the port of export place of described through hole 23.
Angle between the axis of described through hole 23 and the axis of described drill body is 30 ° to 60 °.
One end of described drill body is provided with the convenient screw thread connecting impactor 1; The other end of described drill body is provided with the convenient screw thread connecting sealing liquid joint 3.
As shown in Figure 1, Figure 2, shown in Figure 12, the utility model additionally provides a kind of reaming assembly of pulling back for pipeline installation under no-dig technique condition, comprises impactor 1, sealing liquid joint 3 and above-mentioned reamer 2 (adopting the reamer 2 of the first embodiment); One end of described reamer 2 is connected by thread seal with between described impactor 1, and the other end of described reamer 2 is connected by thread seal with described sealing liquid joint 3.When using the utility model reaming of pulling back implemented in non-excavation laying pipeline construction process to creep into, slurries adopt the mode of direct circulation.Wherein, impactor 1 can provide axial reciprocating impact load, its upper end is connected with drill string by screw thread, lower end is connected with reamer 2 by screw thread, so just can creep into mode implementing the reaming realizing impact rotating in process that reaming creeps into of pulling back of non-excavation laying pipeline, can make effectively to be promoted the reaming drilling efficiency of rock.Described impactor 1 can select any kind and pattern that specification is suitable, preferably: described impactor 1 is hydraulic impacter or torsion impact device.
As shown in Figure 10, Figure 11, described sealing liquid joint 3 is provided with screw thread away from one end of described reamer 2.Sealing liquid joint 3 is the parts connecting reamer 2 and transfer gear, drill string (or finished product pipeline), and it forms primarily of upper screw thread 31, middle part liquid islocation plate 32 and lower screw thread 33.Its top is connected with the lower end connecting thread 24 of reamer 2 by upper screw thread 31; Middle part is middle part liquid islocation plate 32, for shutoff implement pipeline installation under no-dig technique condition pull back constantly circulate in drilling tool when reaming is crept into have mud jacking liquid, enable mud jacking liquid in the central passage inner product accumulation of energy of reamer 2 and upwards accumulate, thus having enable mud jacking liquid form high-pressure spray in through hole 23 flow nozzle 25; Bottom is connected with transfer gear, drill string (or finished product pipeline) etc. by lower screw thread 33, it is to be noted, if transfer gears etc. are not adopt the mode be threaded, then by connecting a suitable switch transition joint for connecting transfer gear etc. at lower screw thread 33 place.
The pivotal power resources of a whole set of drilling tool are in the rig being placed on earth's surface, impactor 1 is flowed into along drill string central passage by the mud jacking liquid that has of slush pump pumping, the block stamp of impactor 1 is driven to move back and forth vertically, thus constantly apply shock loading in the upper end of reamer 2, creep into realize carrying out reaming to rock arround hole wall in the mode of impact rotating detritus, can make effectively to be promoted the reaming drilling efficiency of rock.Rig drives a whole set of drilling tool turn round and apply the pressure of the drill when pulling back reaming at a high speed, and the reaming that the some cutting elements 221 be now laid on reamer 2 rock constantly cut arround broken hole wall realizes revolution Cutting Rock mode is crept into.Mud jacking liquid is had to flow to the central passage of reamer 2 until intercepted by middle part liquid islocation plate 32 after arriving at sealing liquid joint 3, what now constantly circulate has the constantly savings energy also upwards accumulation in the central passage of reamer 2 of mud jacking liquid, its inner chamber is flowed into from the liquid flow inlet 251 of some nozzles 25 along some through holes 23, and form high-pressure spray by the ejection of fluid outlet 252 high speed, (in advance) erosion in advance can be carried out broken to the rock arround hole wall, carry out reaming creep into realize auxiliary reamer, effectively can promote the operating efficiency that reaming is crept into.
Under the condition being integrated with the Alternative detritus method under rotary-percussive drilling and high-pressure spray coupling, along with reaming is constantly carried out with creeping into, be connected to the transfer gear at sealing liquid joint 3 rear portion, drill string (or finished product pipeline) etc. by simultaneously along with rig drives the reaming of pulling back of a whole set of drilling tool to complete pipe installation under no-dig technique condition along the drilling track be drilled to.
Second embodiment:
As shown in Figure 13, Figure 14, for the utility model another kind of non-excavation laying pipeline reamer 2 structural representation, reamer 2 overall structure in second embodiment is substantially identical with the reamer 2 in the first embodiment, difference is, the inner position on the lower side of drill body is provided with the bottom liquid islocation plate 26 for intercepting its central passage.Like this when using the reamer 2 of this example, without the need to external sealing liquid joint 3, directly connect transfer gear, drill string (or finished product pipeline) etc. by lower end connecting thread 24.
According to the second embodiment, the utility model additionally provides the another kind of reaming assembly of pulling back laid for no-dig technique condition underground pipelines, and it comprises impactor 1 and reamer 2 (adopting the reamer 2 of the second embodiment); Be tightly connected by upper end connecting thread 21 between one end of described reamer 2 and described impactor 1, the other end of described reamer 2 connects transfer gear, drill string (or finished product pipeline) etc. by lower end connecting thread 24.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a non-excavation laying pipeline reamer, is characterized in that: the drill body comprising through, and the middle part of described drill body is circumferentially provided with multiple cutting unit be evenly distributed on outside described drill body; Be provided with for the continuous skewed through hole having mud jacking liquid to discharge circulated by described drill body inside between adjacent described cutting unit; The port of export build-in of a described through hole is had at least to have nozzle;
Described cutting unit comprises cutting element, steel body and impregnated with diamond bar; Described steel body is fixed on the periphery outside described drill body; Described cutting element build-in is on described steel body; Described impregnated with diamond bar is arranged on the outside of described steel body.
2. a kind of non-excavation laying pipeline reamer according to claim 1, is characterized in that: described nozzle and described through hole one-body molded, or described nozzle by the fixed form build-in of screw thread, welding or interference fit in the port of export place of described through hole.
3. a kind of non-excavation laying pipeline reamer according to claim 1 or 2, is characterized in that: the angle between the axis of described through hole and the axis of described drill body is 30 ° to 60 °.
4. a kind of non-excavation laying pipeline reamer according to claim 3, is characterized in that: described cutting element adopts PDC, CBN, Si Lawujiqi, TSP, PCD material to make.
5. a kind of non-excavation laying pipeline reamer according to claim 3, is characterized in that: one end of described drill body is provided with the screw thread for connecting impactor; The other end of described drill body is provided with the screw thread for connecting sealing liquid joint.
6. a kind of non-excavation laying pipeline reamer according to claim 3, is characterized in that: the inner position on the lower side of described drill body is provided with the bottom liquid islocation plate for intercepting its central passage; One end of described drill body is provided with the screw thread for connecting impactor; The other end of described drill body is provided with the screw thread for being connected with transfer gear, drill string or finished product pipeline.
7. no-dig technique condition underground pipelines lays a reaming assembly of pulling back, and it is characterized in that: comprise impactor, sealing liquid joint and the reamer as described in any one of claim 1 to 5; One end of described reamer is connected by thread seal with between described impactor, and the other end of described reamer is connected by thread seal with described sealing liquid joint.
8. a kind of no-dig technique condition underground pipelines lays reaming assembly of pulling back according to claim 7, it is characterized in that: described impactor is hydraulic impacter.
9. according to claim 7 or 8, a kind of no-dig technique condition underground pipelines lays reaming assembly of pulling back, and it is characterized in that: the inside of described sealing liquid joint is provided with has mud jacking liquid and the middle part liquid islocation plate also upwards can accumulated in the central passage inner product accumulation of energy of reamer for shutoff.
10. a kind of no-dig technique condition underground pipelines lays reaming assembly of pulling back according to claim 9, it is characterized in that: described sealing liquid joint is provided with the screw thread for being connected with transfer gear, drilling rod or finished product pipeline away from one end of described reamer.
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| CN201520126848.9U CN204476277U (en) | 2015-03-05 | 2015-03-05 | A kind of non-excavation laying pipeline reamer and reaming assembly of pulling back |
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| CN201520126848.9U CN204476277U (en) | 2015-03-05 | 2015-03-05 | A kind of non-excavation laying pipeline reamer and reaming assembly of pulling back |
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| CN204476277U true CN204476277U (en) | 2015-07-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222842A (en) * | 2018-01-03 | 2018-06-29 | 西南石油大学 | Disposal pore-forming no-dig technique drill bit and no-dig technique method |
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2015
- 2015-03-05 CN CN201520126848.9U patent/CN204476277U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222842A (en) * | 2018-01-03 | 2018-06-29 | 西南石油大学 | Disposal pore-forming no-dig technique drill bit and no-dig technique method |
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