CN208347680U - composite impact tool - Google Patents

Abstract

The utility model provides a kind of composite impact tool.The utility model composite impact tool, comprising: outer housing and the motor unit being contained in inside outer housing；Motor unit includes jump bit and valve cylinder；Jump bit includes hammer cylinder and hammer body, and hammer body is fixed on the lateral surface of hammer cylinder；Valve cylinder is set on the outside of jump bit, and the medial surface of valve cylinder is provided with helical form guide-track groove；Hammer body is contained in guide-track groove, and the inwardly projecting formation shock surface in lower end of guide-track groove；The lower end of valve cylinder with the second connector for connecting；The intracorporal cleaner for high-pressure drilling fluid of shell alternately enters hydraulic cavities and lower hydraulic pressure chamber driving hammer body is slided up and down along guide-track groove, so that the lower end surface of hammer cylinder and impact or separate shock surface.The utility model is moved up and down using the hammer body of cleaner for high-pressure drilling fluid driving jump bit along the helical guideway slot of valve cylinder, drill bit is set to obtain the axial composite impact load with twisting, it solves the problems, such as that deep-well stratum bit pressure applies difficult and bottom drill tool stick-slip stall, improves the rate of penetration of drill bit.

Description

Composite impact tool

Technical field

The utility model relates to drilling tool technical field more particularly to a kind of composite impact tools.

Background technique

In Process of Oil Well Drilling, drilling well business efficiency is not only can be improved in the rate of penetration for improving drill bit, reduces drilling well Cost, and in some special circumstances, bores special formation and timely sealing fastly, is more advantageous to and avoids down-hole accident Occur.Mud motor+PDC drill bit is a kind of speed-raising assembled scheme especially mature for deep-well, ultradeep well application at present. But in the deep formation of complex lithology, bit pressure applies difficulty, and the bit pressure that tubing string gravity generates can not effectively pass to drill bit, " backing pressure " phenomenon easily occurs for long horizontal sections tubing string, increases frictional resistance in drilling process, leads to bit freezing；Also, stick-slip effect is led Cause the change in torque amplitude being applied on PDC drill bit big, the torque of this large change amplitude reduces the service life of PDC drill bit, together When also seriously affect the cutting rate of PDC drill bit.

For the bit pressure situation and stick-slip effect for improving PDC drill bit, axial impact speed-raising tool is mainly used in the prior art (abbreviation axis rushes tool) and torsional pulse speed-raising tool (referred to as turn round and rush tool).Axis rushes tool generation axial impact force and is applied to brill On head, increase the ballistic work of drill bit fractured rock.Torsion rushes tool by the way that reciprocating collision occurs in the circumferential, to apply to drill bit Add high-frequency torsional pulse load.

But existing axis rushes tool and cannot generate torsional pulse load, tool is rushed in torsion cannot generate axial impact loading, It is simple axis to be rushed to tool and tool combination is rushed in torsion, cause drilling tool too long, is unfavorable for creeping into the transmitting of power, reduces brill Well efficiency.

Utility model content

The utility model provides a kind of composite impact tool, applies axial direction and torsional pulse load to drill bit simultaneously to realize Lotus improves drilling efficiency.

The utility model provides a kind of composite impact tool, comprising: outer housing and the movement being contained in inside outer housing Unit；Motor unit includes jump bit and valve cylinder；Jump bit includes hammer cylinder and hammer body, and hammer body is fixed on the lateral surface of hammer cylinder；Valve Cylinder is set on the outside of jump bit, and the medial surface of valve cylinder is provided with helical form guide-track groove；Hammer body is contained in guide-track groove, by guide rail Slot is separated into hydraulic cavities and lower hydraulic pressure chamber, and the inwardly projecting formation shock surface in lower end of guide-track groove；The lower end of valve cylinder be used for The connection of second connector；The intracorporal cleaner for high-pressure drilling fluid of shell alternately enters hydraulic cavities and lower hydraulic pressure chamber driving hammer body along guide-track groove Lower slider, so that the lower end surface of hammer cylinder and shock surface collide or far from shock surfaces.

Composite impact tool as described above, further includes power unit；Motor unit further includes with flow cartridge；Side with flow cartridge First is provided on wall with circulation road and second with circulation road, first with circulation road be it is multiple, set along with the circumferentially-spaced of flow cartridge It sets；Second with circulation road be it is multiple, be provided at circumferentially spaced along with flow cartridge, and second be arranged each time with circulation road adjacent two A first with the centre in circulation road circumferential direction；And first matches the axially spaced pre-determined distance of circulation road with circulation road and second；Hammer cylinder into shape It is set in the outside with flow cartridge, hammers into shape and offers the first inlet and the second inlet on the side wall of cylinder, and hammer body is arranged first Between inlet and the second inlet；Power unit is fixedly connected with the upper end with flow cartridge, is rotated for driving with flow cartridge, so that First matches circulation road and the second inlet alternate communication with circulation road and the first inlet and second, and then hands over cleaner for high-pressure drilling fluid For upper hydraulic cavities and lower hydraulic pressure chamber is entered, to push hammer body to slide up and down along guide-track groove.

Composite impact tool as described above, wherein motor unit further includes packing cylinder；Insulate cylinder setting with flow cartridge and It hammers into shape between cylinder, and the lower end for insulating cylinder is fixedly connected with the lower end of valve cylinder；It insulates and offers the first flow channels on the side wall of cylinder With the second flow channels, and the first flow channels and the first inlet are in connected state, the second flow channels and second always Inlet is in connected state always；Power unit driving is rotated with flow cartridge, so that first matches circulation road and the first flow channels Match circulation road and the second flow channels alternate communication with second, and then it is hydraulic under so that cleaner for high-pressure drilling fluid is alternately entered hydraulic cavities Chamber, to push hammer body to slide up and down along guide-track groove.

Composite impact tool as described above, wherein motor unit further includes the aerial drainage spray seat abutted with flow cartridge lower end； The axial centre of aerial drainage spray seat offers central passage, and the side wall of central passage offers discharge orifice；Discharge orifice is in connection Heart channel and packing cylinder and with the annular space between flow cartridge.

Composite impact tool as described above, wherein power unit includes: rotary shaft and impeller；The central part edge of impeller Through-hole axially is offered, impeller is set in the outside of rotary shaft, and central part offers the first flowing hole being connected to through-hole；Rotation Axis is provided in the axial direction with central passage, and rotary shaft is also provided with the second flowing hole being connected to central passage, the second flowing hole with The connection of first flowing hole；The lower end of rotary shaft is fixedly connected with the upper end with flow cartridge.

Composite impact tool as described above, wherein power unit further includes current divider；Rotary shaft is arranged in current divider Upper end, the axial centre of current divider offer shunting through-hole, shunt through-hole and are connected to the central passage of rotary shaft；Current divider and outer Annular space between shell is connected to the annular space between impeller and outer housing.

Composite impact tool as described above, wherein power unit further includes baffle；Baffle is set in the outer of impeller Side；Flow-guiding channel is provided on baffle, the inlet of flow-guiding channel is connected to the annular space between current divider and outer housing, water conservancy diversion The liquid outlet in channel is connected to the annular space between baffle and impeller.

Composite impact tool as above, wherein baffle includes upper annulus, lower annulus and is arranged in upper annulus and lower circle Guide vane between ring；The outer edge of upper annulus offers diversion trench, between the inlet and current divider and outer housing of diversion trench Annular space connection, the liquid outlet of diversion trench is connected to the annular space between guide vane and outer housing；Guide vane is multiple, guide vane edge Upper annulus is provided at circumferentially spaced, and is provided with flow guiding slit between two adjacent guide vanes；Diversion trench, guide vane and outer housing it Between annular space, flow guiding slit formed flow-guiding channel.

Composite impact tool as described above, wherein the upper end of the second connector is abutted with the lower end of valve cylinder, the second connector Lower end with drill bit for being fixedly connected；Second upper end of joint and outer housing lower end are rotatablely connected.

Composite impact tool as above, wherein the medial surface of outer housing lower end offers first annular groove, the second connector The lateral surface of upper end offers second annular groove in the position of first annular groove；First annular groove and second annular groove Surround the annular accommodating chamber for accommodating steel ball.

The utility model composite impact tool alternately enters upper hydraulic cavities and lower liquid using the intracorporal cleaner for high-pressure drilling fluid of shell Press chamber driving jump bit hammer body along valve cylinder helical guideway slot move up and down, make hammer into shape cylinder lower end surface and shock surface collision or Far from shock surface, the lower end surface and shock surface for hammering cylinder into shape are collided so that valve cylinder has axial movement trend, meanwhile, hammer body drives valve cylinder Rotation, so that valve cylinder has twisting movement tendency, axial and twisting movement tendency is transmitted to drill bit, keeps drill bit acquisition axial and turns round To composite impact load, solve the problems, such as that deep-well stratum bit pressure applies difficult and bottom drill tool stick-slip stall, improve the machine of drill bit Tool drilling speed improves drilling efficiency.

Detailed description of the invention

Fig. 1 is the cross-sectional view of the utility model composite impact tool；

Fig. 2 a is the structural schematic diagram of the utility model composite impact tool valve cylinder；

Fig. 2 b is the cross-sectional view of the utility model composite impact tool valve cylinder；

Fig. 3 is the structural schematic diagram of the utility model composite impact tool impact hammer；

Fig. 4 is the structural schematic diagram that the utility model composite impact tool matches flow cartridge；

Fig. 5 is the cross-sectional view that the utility model composite impact tool insulates cylinder；

Fig. 6 is the structural schematic diagram of the utility model composite impact tool aerial drainage spray seat；

Fig. 7 is the structural schematic diagram of the utility model composite impact tool friction-proof piece；

Fig. 8 a is the structural schematic diagram of the utility model composite impact tool impeller；

Fig. 8 b is the cross-sectional view of the utility model composite impact tool impeller；

Fig. 9 is the cross-sectional view of the utility model composite impact instrument rotary shaft；

Figure 10 is the structural schematic diagram of the utility model composite impact tool first seal；

Figure 11 is the structural schematic diagram of the utility model composite impact tool second seal；

Figure 12 is the structural schematic diagram of the utility model composite impact tool current divider；

Figure 13 is the cross-sectional view of the utility model composite impact tool shunt cylinder；

Figure 14 a is the structural schematic diagram of the utility model composite impact tool attachment base；

Figure 14 b is the cross-sectional view of the utility model composite impact tool attachment base；

Figure 15 is the cross-sectional view of the utility model composite impact tool third sealing element；

Figure 16 is the structural schematic diagram of the utility model composite impact tool baffle；

Figure 17 is the structural schematic diagram of the utility model composite impact tool outer casing body；

Figure 18 is the structural schematic diagram of the second connector of the utility model composite impact tool；

Figure 19 a is the cross-sectional view that the utility model composite impact tool is located at top dead-centre；

Figure 19 b is the B-B direction cross-sectional view of Figure 19 a；

Figure 19 c is the C-C of Figure 19 a to cross-sectional view；

Figure 19 d is the D-D of Figure 19 a to cross-sectional view.

Description of symbols:

1: the first connector；2: outer housing；21: mounting hole；22: dental inlay；23,24: loading end；25: sealed groove；26: the One annular groove；3: the second connectors；32: abutting part；33: second annular groove；34: sealed groove；35: dental inlay slot；4: shunting Cylinder；41: installation convex block；42: external screw thread；43: central passage；5: current divider；51: shunting through-hole；52: joint face；6: attachment base； 60: outer ring body；61: flow-conveying groove；62: baffle；63: threaded hole；64: baffle aperture；65: baffle down space；66: mating surface；7: Gasket ring；80: third sealing element；801: threaded hole；802: through-hole；803: step surface；81: baffle；810: upper annulus；811: leading Chute；812: guide vane；813: flow guiding slit；814: lower annulus；815: supporting surface；82: rotary shaft；821: the second flowing holes； 822: central passage；823: the first linkage sections；824: the second linkage sections；825: third linkage section；826: the four linkage sections；827: 5th linkage section；83: impeller；831: the first flowing holes；832: through-hole；833: blade；834: cylindrical surface；84: first seal； 841: upper annulus；842: lower annulus；9: alignment bearing；100: second seal；1001: through-hole；1002: screw hole；101: valve Cylinder；1010: guide-track groove；1011: guide rail；1012: guide pass；1013: positioning screw hole；1014: First terrace；1015: the Two step surfaces；1016: shock surface；1017: abutting part；102: jump bit；1020: hammer cylinder；1021: hammer body；1022: the flat side of a hammer； 1023: the second inlets；1024: the first inlets；1025: hammering the lower end surface of cylinder into shape；103: packing cylinder；Cross circulation at 1030: the first Road；1031: the second flow channels；1032: external screw thread；104: matching flow cartridge；1040: shunting convex block；Match circulation road at 1041: the first； Match circulation road at 1042: the second；1043: internal screw thread；1044: groove port；105,106: friction-proof piece；1050: anti-flour milling；1051: convex Block；1052: groove；107: aerial drainage spray seat；1070: the first mating surfaces；1071: friction-proof piece locating piece；1072: sloping platform face；1073: Second mating surface；1074: discharge orifice；1075: central passage；11: steel ball；12: sealing ring.

Specific embodiment

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing, it should be appreciated that herein Described specific embodiment is only used for describing and explaining the present invention, and the utility model is not limited to following specific realities Apply mode.

Firstly the need of explanation, in the present invention, noun of locality "upper" refers to one end far from drill bit, noun of locality "lower" Refer to close to one end of drill bit；Noun of locality "inner" refers to that, close to the side of axial centre, noun of locality "outside" refers to one far from axial centre Side.

Fig. 1 is the cross-sectional view of the utility model composite impact tool；Fig. 2 a is the utility model composite impact tool valve cylinder Structural schematic diagram；Fig. 2 b is the cross-sectional view of the utility model composite impact tool valve cylinder；Fig. 3 is the utility model compound flushing Hit the structural schematic diagram of tool impact hammer.Fig. 4 is the structural schematic diagram that the utility model composite impact tool matches flow cartridge；Fig. 5 is The cross-sectional view of the utility model composite impact tool packing cylinder；Fig. 6 is the knot of the utility model composite impact tool aerial drainage spray seat Structure schematic diagram；Fig. 7 is the structural schematic diagram of the utility model composite impact tool friction-proof piece；Fig. 8 a is the utility model compound flushing Hit the structural schematic diagram of tool impeller；Fig. 8 b is the cross-sectional view of the utility model composite impact tool impeller；Fig. 9 is that this is practical new The cross-sectional view of type composite impact instrument rotary shaft；Figure 10 is the structural representation of the utility model composite impact tool first seal Figure；Figure 11 is the structural schematic diagram of the utility model composite impact tool second seal；Figure 12 is the utility model compound flushing Hit the structural schematic diagram of tool current divider；Figure 13 is the cross-sectional view of the utility model composite impact tool shunt cylinder；Figure 14 a is this The structural schematic diagram of utility model composite impact tool attachment base；Figure 14 b is the utility model composite impact tool attachment base Cross-sectional view；Figure 15 is the cross-sectional view of the utility model composite impact tool third sealing element；Figure 16 is the utility model compound flushing Hit the structural schematic diagram of tool baffle；Figure 17 is the structural schematic diagram of the utility model composite impact tool outer casing body；Figure 18 For the structural schematic diagram of the utility model composite impact the second connector of tool；Figure 19 a is the utility model composite impact tool position In the cross-sectional view of top dead-centre；Figure 19 b is the B-B of Figure 19 a to cross-sectional view；Figure 19 c is the C-C of Figure 19 a to cross-sectional view；Figure 19 d is The D-D of Figure 19 a is to cross-sectional view.

Referring to figs. 1 to Fig. 3, the present embodiment provides a kind of composite impact tools, comprising: outer housing 2 and is contained in shell Power unit and motor unit inside body 2；Motor unit includes jump bit 102 and valve cylinder 101；Jump bit 102 includes hammer cylinder 1020 and hammer body 1021, hammer body 1021 is fixed on the lateral surface of hammer cylinder 1020；Valve cylinder 101 is set in 102 outside of jump bit, and The medial surface of valve cylinder 101 is provided with helical form guide-track groove 1010；Hammer body 1021 is contained in guide-track groove 1010, by guide-track groove 1010 It is separated into hydraulic cavities and lower hydraulic pressure chamber, and the inwardly projecting formation shock surface 1016 in lower end of guide-track groove 1010；Under valve cylinder 101 End with the second connector 3 for connecting；Cleaner for high-pressure drilling fluid in outer housing 2 alternately enters hydraulic cavities and lower hydraulic pressure chamber driving hammer body 1021 slide up and down along guide-track groove 1010, so that the lower end surface 1025 of hammer cylinder and shock surface 1016 collide or far from shock surfaces 1016。

Specifically, composite impact tool provided in this embodiment can be applied in the drilling process of deep-well, ultradeep well etc.. Composite impact tool includes outer housing 2, motor unit and power unit, and the axial centre of outer housing 2 offers central passage, is moved It is contained in central passage as unit.

Motor unit is as the executing agency for realizing reciprocating impact effect, including jump bit 102 and valve cylinder 101；Its In, jump bit 102 includes hammer cylinder 1020 and hammer body 1021, and hammer body 1021 is fixed on the lateral surface of hammer cylinder 1020, hammer cylinder 1020 Axial centre opens up central passage, for making cleaner for high-pressure drilling fluid circulate.The lateral surface of hammer cylinder 1020 is fixed with hammer body 1021, wherein The shape of hammer body 1021 and the shape of guide-track groove 1010 are adapted, it is preferable that hammer body 1021 is arc, arcwall face and guide rail Guide-track groove 1010 is divided into two hydraulic cavities up and down by the arcwall face clearance fit of slot 1010.1022 phase of the flat side of a hammer of hammer body 1021 Certain angle is tilted for the arcwall face of hammer body 1021, angle is controlled by guide-track groove, inclined angle and guide-track groove 1010 It is consistent, so that the flat side of a hammer 1022 is preferably bonded with guide pass 1012, so that hammer body 1021 be made to slide along guide-track groove 1010 It is more smooth.Hammer body 1021 can be set one, hammer body 1021 also can be set it is multiple, such as two, three etc., multiple hammer bodies 1021 along vertical cylinder 1020 circumferential uniform intervals be arranged.Correspondingly, guide-track groove 1010 can be set one, also can be set more It is a, multiple being provided at circumferentially spaced along valve cylinder 101 of guide-track groove 1010.It is preferably carried out mode as one, hammer body 1021 is arranged It two, is oppositely arranged along vertical the circumferentially-spaced of cylinder 1020；Guide-track groove 1010 is arranged two, along being provided at circumferentially spaced for valve cylinder 101.

101 axial centre of valve cylinder offers intermediate channel, and valve cylinder 101 is set in the outside of jump bit 102, valve cylinder 101 The inside face contact of lateral surface and outer housing 2.The medial surface of 101 valve cylinder 101 of valve cylinder is inwardly projecting guide rail 1011, adjacent Guide-track groove 1010, the arcwall face of guide rail 1011 and the arcwall face clearance fit of hammer cylinder 2010 are formed between guide rail 1011, with Make the hydraulic cavities that two opposing seals up and down are formed between hammer body 1021 and guide-track groove 1010.The lower end of guide-track groove 1010 is to convex The shock surface 1016 that can accommodate hammer cylinder 1020 is formed out, and power unit drives hammer body 1021 along 1010 slide downward of guide-track groove, makes The lower end surface 1025 and shock surface 1016 that cylinder must be hammered into shape are collided, so that valve cylinder 101 has axial movement trend, meanwhile, hammer body 1021 Valve cylinder 101 is driven to rotate, so that valve cylinder 101 has twisting movement tendency, axial and twisting movement tendency is transmitted to by rigid body Drill bit, so that bit part obtains additional axial direction and torsional pulse load, to improve the rate of penetration of drill bit.When power list Member driving hammer body 1021 is along 1010 upward sliding of guide-track groove, so that the lower end surface 1025 of hammer cylinder is resetted far from shock surface 1016, it is quasi- Standby subsequent cycle composite impact.

The lower end of valve cylinder 101 with the second connector 3 for connecting, and the second connector 3 is for being fixedly connected with drill bit, so that valve cylinder The composite impact load that 101 shock surface 1016 is born can rigid of transmission to drill bit.

Cleaner for high-pressure drilling fluid in outer housing 2 alternately enters hydraulic cavities and lower hydraulic pressure chamber, and specific implementation can be It is realized by liquid flow switch or other liquid reversing mechanisms, it is not limited here.

Composite impact tool provided in this embodiment, it is upper hydraulic by being alternately entered using the intracorporal cleaner for high-pressure drilling fluid of shell The hammer body of chamber and lower hydraulic pressure chamber driving jump bit moves up and down along the helical guideway slot of valve cylinder, makes lower end surface and the shock surface of hammering cylinder into shape Collision or far from shock surface, the lower end surface and shock surface for hammering cylinder into shape are collided so that valve cylinder has axial movement trend, meanwhile, hammer body Valve cylinder rotation is driven, so that valve cylinder has twisting movement tendency, axial and twisting movement tendency is transmitted to drill bit, obtains drill bit The axial composite impact load with twisting solves the problems, such as that deep-well stratum bit pressure applies difficult and bottom drill tool stick-slip stall, improves The rate of penetration of drill bit improves drilling efficiency.

Further, referring to Fig. 4, composite impact tool provided in this embodiment includes power unit；Motor unit also wraps It includes with flow cartridge 104；First is provided on side wall with flow cartridge 104 with circulation road 1041 and second with circulation road 1042, first matches Circulation road 1041 be it is multiple, be provided at circumferentially spaced along with flow cartridge 104；Second with circulation road 1042 be it is multiple, along match flow cartridge 104 Be provided at circumferentially spaced, each second is arranged in two neighboring first in 1041 circumferential direction of circulation road with circulation road 1042 Between；First matches the axially spaced pre-determined distance of circulation road 1042 with circulation road 1041 and second；Hammer cylinder 1020 is set in flow cartridge 104 Outside, hammer into shape and offer the first inlet 1024 and the second inlet 1023 on the side wall of cylinder 1020, and hammer body is arranged first Between inlet 1024 and the second inlet 1023；Power unit is fixedly connected with the upper end with flow cartridge 104, is matched for driving Flow cartridge 104 rotates, so that first matches circulation road 1042 and the second feed liquor with circulation road 1041 and the first inlet 1024 and second Mouthful 1023 alternate communications, and then cleaner for high-pressure drilling fluid is made to alternately enter hydraulic cavities and lower hydraulic pressure chamber, to push hammer body 1021 along leading Track slot 1010 slides up and down.

Power unit is entered different hydraulic cavities by certain frequency by controlling high-pressure fluid, and the pressure difference in hydraulic cavities is driven Dynamic hammer body slides up and down.As a preferred embodiment, power unit further includes matching 104 axial centre of flow cartridge with flow cartridge 104 Central passage is offered, is circulated for cleaner for high-pressure drilling fluid, is contained in flow cartridge 104 in the central passage of hammer cylinder 1020.With flow cartridge First is provided on 104 side wall with circulation road 1041 and second with circulation road 1042, and first matches circulation road 1041 and second With the axially spaced pre-determined distance of circulation road 1042, the present embodiment to the pre-determined distance without limitation.First is with circulation road 1041 It is multiple, along being provided at circumferentially spaced with flow cartridge 104；Second with circulation road 1042 be it is multiple, along circumferentially-spaced with flow cartridge 104 Setting, each second is arranged in two neighboring first with the centre in 1041 circumferential direction of circulation road with circulation road 1042.First matches Circulation road 1041 is identical with the second quantity with circulation road 1042, and first can be with circulation road 1042 with circulation road 1041 and second It is respectively set two, three, four etc..For example, Fig. 4, with two first are respectively set in flow cartridge 104 with circulation road 1041 and the Two match circulation road 1042, and two first are separated by 180 degree setting with circulation road 1041, and second is also separated by 180 degree with circulation road 1042 Setting matches the centre of circulation road 1041 positioned at two first, so that four flow channels are separated by 90 degree of settings.The utility model pair First with circulation road 1041 and the second quantity with circulation road 1042 without limitation, it is consistent with hammer body, guide-track groove number, and it is multiple Syzygies hits that ballistic work, stroke, the composite factor of frequency of impact are related, and those skilled in the art can design according to the actual situation.

Lateral surface with flow cartridge 104, which protrudes outward to be provided with, shunts convex block 1040, and first matches with circulation road 1041 and second Circulation road 1042, which is provided with, to be shunted on convex block 1040.Also, first can be with circulation road 1041 and second with circulation road 1042 Circular channel, is also possible to polygonal shaped channels, and the present embodiment preferably first is with circulation road 1042 with circulation road 1041 and second Circle rectangular channel.

Hammer cylinder 1020 is set in the outside with flow cartridge 104, hammers into shape and offers 1024 He of the first inlet on the side wall of cylinder 1020 Second inlet 1023, and hammer body 1021 is arranged between the first inlet 1024 and the second inlet 1023；First inlet 1024 and second inlet 1023 quantity be provided with first with circulation road 1041 and second match circulation road 1042 facilities Identical, details are not described herein.Also, the first inlet 1024 and the second inlet 1023 is preferably rectangular in shape, also, square A line circle of shape inlet is aligned with the smallest end of the flat side of a hammer 1022 of hammer body 1021, to guarantee the first inlet 1024 and the Two inlets 1023 are in guide-track groove 1010, to guarantee cleaner for high-pressure drilling fluid as far as possible in guide-track groove 1010 and the formation of hammer body 1021 Hydraulic cavities in, reduce vent flow.

Upper end with flow cartridge 104 is provided with connection screw thread, for being fixedly connected with motor unit, as described in Fig. 4, and flow The medial surface of 104 upper ends of cylinder is provided with internal screw thread 1043, certainly, can also with 104 upper end of flow cartridge to be fixedly connected with motor unit External screw thread is arranged, alternatively, achieving a fixed connection with flow cartridge 104 and motor unit interference fit, clamping etc..

Power unit driving is rotated with flow cartridge 104, so that first matches circulation road 1041 and the first inlet 1024 and second With 1023 alternate communication of circulation road 1042 and the second inlet, that is, first is connected to circulation road 1041 with the first inlet 1024 When, second is not connected to circulation road 1042 with the second inlet 1023；First matches circulation road 1041 and the first inlet 1024 not Connection, second is connected to circulation road 1042 with the second inlet 1023.Specifically implementation are as follows: flow cartridge is matched in power unit driving 104 rotations, first is connected to circulation road 1041 with the first inlet 1024, the partial high pressure drilling well with 104 central passage of flow cartridge Liquid passes sequentially through the first upper hydraulic cavities for entering hammer body 1021 and guide-track groove 1010 with circulation road 1041 and the first inlet 1024, To push hammer body 1021 to be so that the lower end surface 1025 of hammer cylinder and shock surface 1016 collide along 1010 slide downward of guide-track groove Drill bit provides composite impact；During hammer body 1021 is along 1010 slide downward of guide-track groove, hammer body 1021 and guide-track groove 1010 The low-pressure drilling liquid of lower hydraulic pressure chamber central passage is entered by current by pass.Lower end surface 1025 and shock surface 1016 when hammer cylinder While contact, power unit driving is rotated with flow cartridge 104 makes second to connect with circulation road 1042 and the second inlet 1023 just Logical (speed of setting power unit, to reach the time requirement of " lucky "), partial high pressure drilling fluid passes sequentially through second The lower hydraulic pressure chamber for entering hammer body 1021 and guide-track groove 1010 with circulation road 1042 and the second inlet 1023, to push hammer body 1021 are resetted along 1010 upward sliding of guide-track groove, complete a composite impact process；In hammer body 1021 along guide-track groove 1010 During upward sliding, the low-pressure drilling liquid of hammer body 1021 and the upper hydraulic cavities of guide-track groove 1010 is entered by current by pass matches The central passage of flow cartridge 104.

Since with flow cartridge 104, in rotary course, split channel and upper and lower two groups of hydraulic cavities are alternate communications, therefore liquid It will be also alternatively formed high-low pressure environment in pressure chamber, hammer body 1021 will be pushed to move up and down under pressure.In motion process In, due to the presence of 101 guide pass 1012 of valve cylinder, the motion profile of hammer body 1021 is a helical curve on cylindrical surface, fortune Hammer body 1021 has axial and circumferential speed simultaneously in dynamic.Therefore, when the lower end surface 1025 and shock surface 1016 for hammering cylinder into shape are collided It will generate along the axial impact effect with circumferential direction, which acts on drill bit, realizes the composite impact of drill bit.

Further, referring to Fig. 5, motor unit further includes packing cylinder 103；It insulates the setting of cylinder 103 and is matching 104 He of flow cartridge It hammers into shape between cylinder 1020, and the lower end for insulating cylinder 103 is fixedly connected with the lower end of valve cylinder 101；It insulates and is offered on the side wall of cylinder 103 First flow channels 1030 and the second flow channels 1031, and the first flow channels 1030 are in always with the first inlet 1024 Connected state, the second flow channels 1031 and the second inlet 1023 are in connected state always；Flow cartridge is matched in power unit driving 104 rotations, so that first crosses circulation with circulation road 1042 and second with circulation road 1041 and the first flow channels 1030 and second 1031 alternate communication of road, and then cleaner for high-pressure drilling fluid is made to alternately enter hydraulic cavities and lower hydraulic pressure chamber, to push hammer body 1021 along leading Track slot 1010 slides up and down.

Packing 103 axial centre of cylinder offers central passage, and setting is between flow cartridge 104 and hammer cylinder 1020.Insulate cylinder 103 lower end is fixedly connected with the lower end of valve cylinder 101, and specifically, the lower end of packing cylinder 103 is provided with external screw thread 1032, with valve The internal screw thread that the First terrace 1014 of cylinder 1011 is arranged is fixedly connected.It insulates and matches circulation road first on the side wall of cylinder 103 1041 position offers the first flow channels 1030, offers the second flow channels in the second position with circulation road 1042 1031.First flow channels 1030 and the first inlet 1024 are in connected state, the second flow channels 1031 and second always Inlet 1023 is in connected state always.It insulates the medial surface of cylinder 103 and shunts the lateral surface clearance fit of convex block 1040, make The medial surface and the lateral surface with flow cartridge 104 that cylinder 103 must be insulated form annular space.First flow channels 1030 and the second flow channels 1031 quantity is consistent with the quantity of circulation road 1042 with circulation road 1041 and second with first, and details are not described herein.This is practical The novel shape to the first flow channels and the second flow channels is without limitation.During hammer body 1021 moves up and down, the One flow channels 1030 always with the first inlet 1024 keep connected state, the second flow channels 1031 always with second into Liquid mouth 1023 keeps connected state, and the first flow channels 1030 and the second flow channels 1031 alternately become high-pressure fluid and enter liquid Press the current by pass into channel and low-pressure drilling liquid of chamber.The main function of packing cylinder 103 is to realize high-low pressure drilling fluid Packing guarantees that the normal work of hammer body 1021, specific implementation are as follows: power unit driving is rotated with flow cartridge 104, and first matches Circulation road 1041 is connected to (at this point, second does not connect with circulation road 1042 with the second flow channels 1031 with the first flow channels 1030 It is logical), the partial high pressure drilling fluid with 104 central passage of flow cartridge passes sequentially through first with flow cartridge to the 1041, first flow channels 1030 and first inlet 1024 enter the upper hydraulic cavities of hammer body 1021 and guide-track groove 1010, to push hammer body 1021 along leading 1010 slide downward of track slot provides composite impact so that the lower end surface 1025 of hammer cylinder and shock surface 1016 collide for drill bit；It is hammering into shape Body 1021 is during 1010 slide downward of guide-track groove, the low-pressure drilling liquid of the lower hydraulic pressure chamber of hammer body 1021 and guide-track groove 1010 Annular space by the second inlet 1023 with the medial surface of packing cylinder 103 between the lateral surface with flow cartridge 104 is connected to, in turn Aerial drainage is carried out by current by pass.While the lower end surface 1025 and shock surface 1016 of hammering cylinder into shape are collided, power unit driving is matched Flow cartridge 104 rotates makes second to be connected to the second flow channels 1031 with circulation road 1042 (at this point, first matches circulation road just 1041 are not connected to the first flow channels 1030), the partial high pressure drilling fluid with 104 central passage of flow cartridge passes sequentially through second Enter under hammer body 1021 and guide-track groove 1010 with flow cartridge to 1042, the second flow channels 1031 and the second inlet 1023 Hydraulic cavities complete a composite impact process so that hammer body 1021 be pushed to reset along 1010 upward sliding of guide-track groove.In hammer body 1021 during 1010 upward sliding of guide-track groove, the low-pressure drilling liquid of the upper hydraulic cavities of hammer body 1021 and guide-track groove 1010 Annular space by the first inlet 1024 with the medial surface of packing cylinder 103 between the lateral surface with flow cartridge 104 is connected to, Jin Ertong It crosses current by pass and carries out aerial drainage.

Referring to Fig. 6, motor unit further includes the aerial drainage spray seat 107 abutted with 104 lower end of flow cartridge；Aerial drainage spray seat 107 Axial centre offers central passage 1075, and the side wall of central passage 1075 offers discharge orifice 1074；Discharge orifice 1074 is used for It is connected to central passage 1075 and packing cylinder 103 and with the annular space between flow cartridge 104.

Motor unit further includes aerial drainage spray seat 107, the aerial drainage for low-pressure drilling liquid.Specifically, the axis of aerial drainage spray seat 107 Central passage 1075 is offered to center, the upper end of 107 lateral surface of aerial drainage spray seat is the first mating surface 1070, the first mating surface 1070 with match flow cartridge 104 medial surface clearance fit；The lower end of first mating surface 1070 protrudes outward to form annulus, sets on annulus It is equipped with friction-proof piece locating piece 1071, friction-proof piece locating piece 1071 is provided at circumferentially spaced along annulus, adjacent friction-proof piece locating piece Groove is formed among 1071；The lower end of annulus is provided with sloping platform face 1072, and discharge orifice 1074, aerial drainage are offered on sloping platform face 1072 Hole 1074 can be set one, also can be set multiple, and the present embodiment is preferred, discharge orifice 1074 be it is multiple, along the circumferential direction Even interval setting, the utility model are not specifically limited the quantity and cross-sectional shape of discharge orifice 1074.Preferably, aerial drainage The axis in hole 1074 and the cutting plane of aerial drainage spray seat 107 are in 60 degree, are conducive to the outflow of aerial drainage drilling fluid.The lower end in sloping platform face 1072 For the second mating surface 1073, it is provided with external screw thread in the second mating surface 1073, is arranged with the second step face 1015 of valve cylinder 101 Internal screw thread connection.

It should be noted that in actual application, the diameter of the central passage 1075 of aerial drainage spray seat 107 is Variable, that is, the different aerial drainage spray seat 107 of setting 1075 diameter of central passage reaches expected to adapt to different drilling conditions Internal pressure.

The upper end of aerial drainage spray seat 107 is abutted with the lower end with flow cartridge 104, and specifically, aerial drainage spray seat 107 is anti-by two It is ground and is abutted with the lower end with flow cartridge 104.Referring to Fig. 7, friction-proof piece 105 is including annulus and the multiple of annulus upper surface are arranged in Convex block 1051, forms groove 1052 between multiple convex blocks 1051, and the lower end surface of annulus is anti-flour milling 1050.The internal diameter of annulus with let out The outer diameter for flowing the first mating surface 1070 of spray seat 107 is consistent, to realize the radial positioning of friction-proof piece, then passes through in axial direction convex The cooperation of the key mapping of block and groove is realized.Specifically, the convex block 1051 of friction-proof piece 105 matches with the groove port 1044 with flow cartridge 104 Close, the groove 1052 of friction-proof piece 105 is matched with the convex block of lower end with flow cartridge 104, the anti-flour milling 1050 of friction-proof piece 105 and The abrasionproof face contact of friction-proof piece 106, the convex block of friction-proof piece 106 are contained in the groove of aerial drainage spray seat 107, friction-proof piece 106 it is recessed The friction-proof piece locating piece 1071 of slot receiving aerial drainage spray seat 107.Herein it is to be appreciated that above-mentioned convex block and groove is that arc is convex Block and groove.

Composite impact tool provided in this embodiment by aerial drainage spray seat carry out aerial drainage, also, aerial drainage spray seat and match flow cartridge Between by friction-proof piece abut, the abrasion with flow cartridge lower end is effectively reduced.

On the basis of the above embodiments, the present embodiment provides a kind of power unit structure forms of composite impact tool. Referring to Fig. 8 a to Fig. 9, power unit includes: rotary shaft 82 and impeller 83；The central part of impeller 83 is provided in the axial direction with through-hole 832, impeller 83 is set in the outside of rotary shaft 82, and the central part of impeller 83 offers the first overcurrent being connected to through-hole 832 Hole 831；Rotary shaft 82 is provided in the axial direction with central passage 822, and rotary shaft 82 is also provided be connected to central passage 822 Two flowing holes 821, the second flowing hole 821 are connected to the first flowing hole 831；The lower end of rotary shaft 82 and the upper end for matching flow cartridge 104 It is fixedly connected.

Specifically, the central part of impeller 83 is provided in the axial direction with through-hole 832, the medial surface of impeller 83 and rotary shaft 82 it is outer Side transition fit.A blade 833 can be set in the lateral surface of impeller 83, for example, lateral surface of the blade along impeller 83 Spiral setting, it is preferable that multiple blades 833 are arranged in the lateral surface of impeller 83, and multiple blades 833 are set along the circumferentially-spaced of impeller 83 It sets.The utility model to the concrete shape of blade without limitation.The side wall of impeller 83 offers the first flowing hole 831, it is preferable that First flowing hole 831 be it is multiple, along being provided at circumferentially spaced for impeller 83, further, per between two adjacent blades 833 One the first flowing hole 831 is set, the balance rotated conducive to impeller 83.Preferably, the central axis of the first flowing hole 831 with The cutting plane of impeller 83 is in 60 degree, keeps drilling fluid circulation more smooth, reduces the energy loss of drilling fluid.The lateral surface of impeller 83 It can be cylindrical surface, blade 833 is arranged on cylindrical surface.In order to preferably make cleaner for high-pressure drilling fluid impact blade, impeller 83 is improved Driving moment, it is preferable that the lateral surface of impeller 83 is circular conical surface, and the diameter of the lateral surface of impeller 83 gradually increases from the top down Greatly.The lateral surface lower end of impeller 83 is cylindrical surface 834.

Referring to Fig. 9, rotary shaft 82 is provided in the axial direction with central passage 822, and the side wall of rotary shaft 82 offers the second mistake Discharge orifice 821, the second flowing hole 821 are connected to the first flowing hole 831, the quantity of the second flowing hole 821 and the first flowing hole 831 Quantity it is consistent, it is preferable that the central axis of the second flowing hole 821 and the cutting plane of rotary shaft 82 are in 60 degree.Rotary shaft 82 Screw thread is arranged in lower end, is fixedly connected with the upper end with flow cartridge 104.

Its course of work of power unit provided in this embodiment is as follows: a part of high pressure drilling drilling fluid is from rotary shaft 82 Central passage 822 flows downward, and another part drilling fluid enters the annular space between impeller 83 and outer housing 2, high pressure drilling drilling well Liquid impacts on blade 833, and impeller 83 is pushed to rotate, so that rotary shaft 82 be driven to rotate, provides power for motor unit.Impact Drilling fluid on blade 833 passes sequentially through the first flowing hole 831 and the second flowing hole 821, flows back to central passage 822.This reality It applies a power unit and uses the impeller for being suitable for petroleum wellbore, be different from conventional well dynamic device (turbine, screw rod), greatly Ground reduces the complexity of power unit.

Further, seal assembly is additionally provided in rotary shaft 82 and junction with flow cartridge 104, seal assembly includes the One sealing element 84 and second seal 100.Referring to Fig.1 0, first seal 84 includes the upper annulus 841 and lower circle being fixedly connected Ring 842, and the diameter of the inner ring surface of upper annulus 841 is less than the diameter of the inner ring surface of lower annulus 842, the outer ring surface of upper annulus 841 Diameter it is consistent with the diameter of outer ring surface of lower annulus 842.Referring to Fig.1 1, second seal 100 includes the upper circle being fixedly connected Ring and lower annulus, and the inner ring surface of upper annulus is consistent with the diameter of inner ring surface of lower annulus, forms through-hole 1001；Outside upper annulus The diameter of anchor ring is greater than the diameter of the outer ring surface of lower annulus, i.e., the lateral surface of upper annulus protrudes from the lateral surface of lower annulus.Upper circle Ring convex are provided with screw hole 1002 for the part of lower annulus.

With continued reference to Fig. 9, the lateral surface of rotary shaft 82 is followed successively by the first linkage section 823, the second linkage section from the top down 824, third linkage section 825, the 4th linkage section 826, the 5th linkage section 827.Wherein, the first linkage section 823, the 4th linkage section 826 and the 5th linkage section 827 be provided with screw thread.

First seal 84 is set in the outside of rotary shaft 82, and the lateral surface of first seal 84 and outer housing 2 is interior Side contact；The inner ring surface of the upper annulus 841 of first seal 84 is abutted with the third linkage section 825 of rotary shaft 82；First is close The lower end surface of the lower annulus 842 of sealing 84 is abutted with the upper surface of second seal 100, and second seal 100 is set in flow Cylinder 104 outside, with match flow cartridge 104 lateral surface clearance fit so that the upper annulus 841 and second of first seal 84 is close A toroidal cavity is formed between sealing 100, and alignment bearing 9 is installed in the toroidal cavity.The lower end of second seal 100 point It is not abutted with valve cylinder 101 and packing cylinder 103, and the upper surface of the guide rail 1011 of valve cylinder 101 offers positioning screw hole 1013, second seal 100 and valve cylinder 101 are fixed together by screw.The present embodiment composite impact tool passes through the One sealing element and second seal sealing will effectively insulate between power unit and motor unit, so that power unit and movement are single First energy respective movement of complete independently；Also, alignment bearing is set and guarantees that rotary shaft is located at the axial centre of outer housing.

On the basis of the above embodiments, in order to preferably be shunted to cleaner for high-pressure drilling fluid, the present embodiment composite impact The power unit of tool further includes current divider 5.Referring to Fig.1 2, the upper end of rotary shaft 82, the axis of current divider 5 is arranged in current divider 5 It is offered to center and shunts through-hole 51, shunted through-hole 51 and be connected to the central passage 822 of rotary shaft 82；Current divider 5 and outer housing 2 Between annular space be connected to the annular space between impeller 83 and outer housing 2.

Specifically, the axial centre of current divider 5, which offers, shunts through-hole 51, and the diameter for shunting through-hole 51 can be according to difference Traffic requirement and it is different, such as design a series of current divider 5, the diameter for shunting through-hole 51 is not identical, to adapt to difference Traffic requirement improves the versatility of composite impact tool, revolves so that the torque of power unit output is not only able to driving with flow cartridge Turn, the speed with flow cartridge can also be made to meet certain job requirement.Optionally, in the shunting through-hole 51 of current divider 5 also A shunt cylinder 4 can be set, referring in particular to Figure 13,4 axial centre of shunt cylinder offers central passage 43, by changing center The diameter in channel 43 adapts to the requirement of different flow.The lower end of shunt cylinder 4 is provided with external screw thread 42, for setting with shunting through-hole 51 The internal screw thread set is fixedly connected.In order to facilitate the installation of shunt cylinder 4, the upper end of shunt cylinder 4 is provided with multiple installation convex blocks 41, just Apply active force when installation.

In order to reduce cleaner for high-pressure drilling fluid impact in the capacity loss of current divider, so that the drilling fluid circulation shunted is more smooth, Preferably, current divider 5 is hemispherical configuration.The lower end of hemispherical configuration is cylindrical joint face 52.

The upper end of rotary shaft 82 is arranged in current divider 5, and current divider 5 can directly be connect with the upper end of rotary shaft 82, alternatively, Current divider 5 can be connect by connector with rotary shaft 82.In some embodiments, current divider 5 passes through attachment base 6 and rotary shaft 82 connections.4a and Figure 14 b referring to Fig.1, attachment base 6 include outer ring body 60, the lateral surface of outer ring body 60 and the medial surface of outer housing 2 It is provided with gap, the axial interstitial hole of outer ring body 60 is stepped hole, mating surface 66 and the current divider 5 of the upper hole section of stepped hole Joint face 52 matches, and mating surface 66 can be interference with joint face 52 and connect, alternatively, it is provided with internal screw thread in mating surface 66, External screw thread is provided on joint face 52, mating surface 66 is connected through a screw thread with joint face 52 and is fixed together.In outer ring body 60 Between be provided with threaded hole 63 on step.The inwardly projecting formation baffle 62 of the lower hole section of stepped hole, the center of baffle 62 offers gear Plate aperture 64, baffle aperture 64 cooperate with the upper portion gap of the first linkage section 823 of rotary shaft 82.The lower end shape of baffle 62 At baffle down space 65, baffle down space 65 accommodates alignment bearing, and the upper end of alignment bearing is realized by the lower end surface of baffle 62 Axially position.

Optionally, in order to guarantee that same composite impact tool uses the alignment bearing of unified specification, alignment bearing 9 passes through pad Ring 7 is connect with rotary shaft 82.The lateral surface of gasket ring and the medial surface of gasket ring are both provided with screw thread, wherein the medial surface of gasket ring with First linkage section 823 of rotary shaft 82 is threadedly coupled, and the lateral surface of gasket ring is threadedly coupled with the inner ring of alignment bearing.Gasket ring 7 End face is also beneficial to realize the axially position of alignment bearing.

Further, in order to be sealed to alignment bearing, the lower end of attachment base 6 is additionally provided with third sealing element 80.Knot Figure 15 is closed, the axial centre of third sealing element 80 offers through-hole 802, and third sealing element 80 is set in the second company of rotary shaft 82 Connect the upper end of section 824, the upper gap cooperation of the side of through-hole 802 and the second linkage section 824.The lateral surface of third sealing element 80 Preferably polygon, such as hexagon, octagon etc. apply active force when facilitating installation.It opens the upper surface of third sealing element 80 Equipped with threaded hole 801, threaded hole 801 is corresponding with the threaded hole 63 on attachment base 6, and third sealing element 80 and attachment base 6 pass through Screw is fixed together.The utility model to the quantity of threaded hole 801 and threaded hole 63 without limitation.Preferably, threaded hole 801 Four are respectively set with threaded hole 63, four threaded holes 801 are arranged along the circumferencial direction uniform intervals of third sealing element 80, and four Threaded hole 63 is arranged along the circumferencial direction uniform intervals of attachment base 6.The lower end of the lateral surface of third sealing element 80 is recessed inwardly shape At step surface 803, it is provided with external screw thread.

In some embodiments, the upper end of outer housing 2 is fixedly connected by the first connector 1 with drilling rod.The axis of first connector 1 Central passage is offered to center, realizes the circulation of drilling fluid.The lower end of central passage is to avoid portion, and the diameter of relief portion is greater than The diameter of central passage, to avoid current divider 5, so that drilling fluid smoothly shunts.The lower end of first connector 1 is provided with outer spiral shell Line is threadedly coupled with the notch of 2 upper end of outer housing setting, and the first connector of realization is fixedly connected with outer housing.First connector 1 Upper end is provided with taper thread, meets API standard, for being fixedly connected with drilling rod.

On the basis of the above embodiments, the power unit of the present embodiment composite impact tool further includes baffle 81, right The drilling fluid that current divider 5 separates guides.In conjunction with Figure 16, baffle 81 is set in the outside of impeller 83；It is set on baffle 81 It is equipped with flow-guiding channel, the inlet of flow-guiding channel is connected to the annular space between current divider 5 and outer housing 2, and flow-guiding channel goes out liquid Mouth is connected to the annular space between baffle 81 and impeller 83.

Specifically, the upper surface of baffle 81 is fixedly connected with third sealing element 80.Flow-guiding channel is set on baffle 81, Annular space between the inlet of flow-guiding channel and current divider 5 and outer housing 2 is connected to, the liquid outlet of flow-guiding channel and baffle 81 and Annular space connection between impeller 83.Flow-guiding channel circumferentially above orderly impacts impeller as by the disordered motion transformation of drilling fluid Guiding channel, without limitation to its specific structure at this.The present embodiment composite impact tool is separated current divider by baffle Disorder drilling fluid, guidance formed flow direction rule drilling fluid, regular impact impeller, driving impeller rotation.

In some embodiments, baffle 81 include upper annulus 810, lower annulus 814 and setting upper annulus 810 and under Guide vane 812 between annulus 814；The outer edge of upper annulus 810 offers diversion trench 811, the inlet of diversion trench 811 with point Flow the annular space connection between device 5 and outer housing 2, the annular space between the liquid outlet and guide vane 812 and outer housing 2 of diversion trench 811 Connection；Guide vane 812 is multiple, multiple being provided at circumferentially spaced along upper annulus 810 of guide vane 812, two adjacent guide vanes Flow guiding slit 813 is provided between 812；Annular space, the formation of flow guiding slit 813 between diversion trench 811, guide vane 812 and outer housing 2 Flow-guiding channel.

Specifically, baffle 81 includes upper annulus 810, lower annulus 814 and is arranged in upper annulus 810 and lower annulus 814 Between guide vane 812；Guide vane 812 is multiple, multiple being provided at circumferentially spaced along upper annulus 810 of guide vane 812, adjacent Flow guiding slit 813 is provided between two guide vanes 812.The cross section of guide vane 812 is preferably crescent.Outside upper annulus 810 Edge has diversion trench 811, and diversion trench 811 is preferably several, is arranged along the circumferencial direction interval of upper annulus 810.Diversion trench Annular space between 811 inlet and current divider 5 and outer housing 2 is connected to, and the liquid outlet of diversion trench 811 is with guide vane 812 and outside Annular space connection between shell 2.Preferably, diversion trench 811 to open up position and the position of flow guiding slit 813 corresponding up and down.It is optional The quantity of ground, diversion trench and flow guiding slit is consistent.The opening angle of guide vane 812 is adjustable, to reach desired waterpower ginseng Number.The concrete shape of flow guiding slit 812 is related to adjacent guide vane, it is not limited here.Diversion trench 811, guide vane 812 and outer Annular space, flow guiding slit 813 between shell 2 form flow-guiding channel.

The medial surface of upper annulus 810 is provided with internal screw thread, and the external screw thread being arranged with the step surface 803 of third sealing element 80 connects It connects.The inwardly projecting formation supporting surface 815 of the medial surface of lower annulus 814, is in contact with the cylindrical surface 834 of 83 lower end of impeller.

Optionally, guide vane 812 is detachably connected with upper annulus 810, lower annulus 814 respectively, according to different flows Need to be arranged the size of flow guiding slit 813.

Preferably, in order to guarantee better diversion effect, the lateral surface of attachment base 6 and the inside face contact of outer housing 2, and The marginal position of attachment base 6 offers flow-conveying groove 61.Cleaner for high-pressure drilling fluid is shunted by current divider 5, and a part of drilling fluid is by dividing The shunting through-hole 51 of stream device 5 flows downward, and another part drilling fluid passes sequentially through annular space between current divider 5 and outer housing 2, even Diversion trench 811, the baffle 81 of annular space, baffle 81 between the flow-conveying groove 61 of joint chair 6, third sealing element 80 and outer housing 2 The flow guiding slit 813 of annular space, baffle 81 between outer housing 2, the annular space between baffle 81 and impeller 83, high pressure are bored Well liquid impacts the blade 833 of impeller 83, and driving impeller 83 is rotated.

Referring to Fig.1, under Figure 17 and Figure 18, the upper end of the second connector 3 of the present embodiment composite impact tool and valve cylinder 101 End abuts, and the lower end of the second connector 3 with drill bit for being fixedly connected；Second connector, 3 upper end and 2 lower end of outer housing are rotatablely connected.

Specifically, 3 axial centre of the second connector offers central passage, the medial surface of 3 upper end of the second connector be provided with to Socket part 32, abutting part 32 are interior hexagonal structure, are matched with the abutting part 1017 of 101 lower end of valve cylinder setting, abutting part 1017 is Outer hexagonal structure.The lower end of second connector 3 is used to be fixedly connected with drill bit, such as connecting pin can be taper thread, the taper thread Meet API thread standard, for being fixedly connected with drill bit.The lateral surface of second connector, 3 upper end and the medial surface of 2 lower end of outer housing It is rotatably connected, so that the composite impact load that valve cylinder 101 is born passes through 3 rigid of transmission of the second connector to drill bit, avoids simultaneously Outer housing 2 bears composite impact load and rotates.

A kind of embodiment of the medial surface rotation connection of lateral surface and 2 lower end of outer housing as 3 upper end of the second connector, The medial surface of 2 lower end of outer housing offers first annular groove 26, and the lateral surface of 3 upper end of the second connector is in first annular groove 26 Position offer second annular groove 33；First annular groove 26 and second annular groove 33 surround the ring for accommodating steel ball 11 Shape accommodating chamber.

Specifically, the medial surface of 2 lower end of outer housing offers first annular groove 26, and first annular groove 26 is radial to be opened Equipped with mounting hole 21, steel ball 11 is installed into accommodating chamber by mounting hole 21, closeouts are installed in mounting hole 21, for sealing Stifled mounting hole 21, prevents the steel ball 11 in accommodating chamber from falling.Optionally, mounting hole 21 is threaded hole, and closeouts are screw.First Annular groove 26 can be set one, also can be set multiple, such as two, three etc., multiple first annular grooves 26 are along outer The axially spaced-apart of shell 2 is arranged, and the radial direction of every first annular groove 26 all offers mounting hole 21, for installing steel ball 11. The quantity of second annular groove 33 is consistent with the quantity of first annular groove 26.Steel ball 11 in accommodating chamber makes the second connector 3 It is circumferential rotatably with outer housing 2, while axial restraint.

Further, outer housing 2 is also provided with sealed groove 25, correspondingly, second in the lower section of first annular groove 26 Connector 3 offers sealed groove 34 in the corresponding position of sealed groove 25, in the ring that sealed groove 25 and sealed groove 34 surround Shape is intracavitary to be equipped with sealing ring 12, the utility model to the specific constructive form of sealing ring without limitation.

Further, the bottom side of the wall of outer housing 2 is provided with dental inlay 22, the dental inlay opened up with 3 lateral surface of the second connector Slot 35 matches.Preferably, dental inlay 22 is multiple, such as four, is arranged along the circumferencial direction interval of outer housing 2, each dental inlay 22 loading end 23 and loading end 24 carries out chromium plating and process of turning blue respectively, guarantees certain wear-and corrosion-resistant.Second connector The dental inlay slot 35 and 22 clearance fit of dental inlay that lateral surface opens up, the gap between dental inlay slot 35 and dental inlay 22, so that the second connector 3 Torsion by a small margin can be realized with opposite shell body 2, to transmit torsional load.2 upper end of outer housing is provided with notch screw thread, uses It is fixedly connected in drilling rod, alternatively, being fixedly connected by connector with drilling rod.

Figure 19 a is the cross-sectional view that the utility model composite impact tool is located at top dead-centre；Figure 19 b is the B-B direction of Figure 19 a Cross-sectional view；Figure 19 c is the C-C of Figure 19 a to cross-sectional view；Figure 19 d is the D-D of Figure 19 a to cross-sectional view.

In conjunction with Figure 19 a to Figure 19 d, when jump bit be specifically described below being located at valve cylinder top dead-centre operating condition, composite impact tool Action process and fluid motion conditions:

Firstly the need of explanation, jump bit is located at the top dead-centre operating condition of valve cylinder, it may be assumed that the top of jump bit and second close The state when lower end of sealing abuts, as shown in figure 19a.The first axial centre with circulation road for crossing pintle makees section B-B, It crosses first and makees section C-C with circulation road and the second center with circulation road, cross the second of the pintle axial centre for matching circulation road Make section D-D.

The cleaner for high-pressure drilling fluid of drilling rod central passage passes through the shunting function of current divider 5, and a part of cleaner for high-pressure drilling fluid stream passes through The shunting through-hole 51 of current divider 5 flows downward, and another part cleaner for high-pressure drilling fluid successively passes through between current divider 5 and outer housing 2 The diversion trench 811 of annular space, baffle 81 between annular space, the flow-conveying groove 61 of attachment base 6, third sealing element 80 and outer housing 2 is led The flow guiding slit 813 of annular space, baffle 81 between fluid 81 and outer housing 2, the annular space between baffle 81 and impeller 83, Cleaner for high-pressure drilling fluid impacts the blade 833 of impeller 83, and driving impeller 83 is rotated, so that rotary shaft 82 is driven to rotate, rotary shaft 82 drive with the rotation of flow cartridge 104.The drilling fluid for driving impeller 83 to rotate passes through the first flowing hole 831 and rotary shaft of impeller 83 82 the second flowing hole 821 enters the central passage 822 of rotary shaft 82, the drilling fluid for shunting through-hole 51 and circulating with current divider 5 Converge.

In Figure 19 b, the cleaner for high-pressure drilling fluid of the central passage 822 of rotary shaft 82 enters the central passage with flow cartridge 104, high Pressure drilling fluid pass sequentially through with flow cartridge 104 first with circulation road 1041, insulate cylinder 103 the first flow channels 1030, impact First inlet 1024 of hammer 102, the upper liquid that the guide-track groove 1010 of hammer body 1021 and valve cylinder 101 into jump bit 102 forms It presses in chamber, cleaner for high-pressure drilling fluid is converged in upper hydraulic cavities, to push hammer body 1021 to move downward.

At this point, insulating in Figure 19 c and not forming flow channels, the hammer body 1021 and valve cylinder of jump bit 102 on cylinder 102 The fluid in two hydraulic cavities up and down that 101 guide-track groove 1010 forms can not form effective channel, and guarantee upper and lower two hydraulic Pressure system in chamber is not ganged up.In Figure 19 d, with flow cartridge 104 second with matching flow cartridge in circulation road 1042 and Figure 19 a The first of 104 is in 90 degree with circulation road 1041, and second is sealed with circulation road 1042 by packing cylinder 102；And the of jump bit 102 Two inlets 1023, the second flow channels 1031 for insulating cylinder 103, the medial surface for insulating cylinder 103 and the outside for matching flow cartridge 104 The discharge orifice 1074 of annular space, aerial drainage spray seat 107 between face is sequentially communicated, the hammer body 1021 of jump bit 102 and leading for valve cylinder 101 The low-pressure drilling effluogram central passage in lower hydraulic pressure chamber that track slot 1010 forms.

When jump bit moves downward, and the lower end surface and shock surface for hammering cylinder into shape are collided, jump bit is located at bottom dead centre at this time, and And at the same time, 90 degree are just rotated through with flow cartridge, second is connected to circulation road with the second flow channels for insulating cylinder, lower liquid It presses chamber to form cleaner for high-pressure drilling fluid, pushes hammer body to move upwards and reset completion a cycle movement.

Compared with the speed-raising principle of existing speed-raising tooling order one, the present embodiment composite impact tool can apply axis to drill bit To the adverse effect generated with circumferential impact effect, the irregular vibration of alleviation drill string to broken rock, drill bit is reduced in deep hard place Layer easily there is a phenomenon where premature abrasion and collapses tooth.Deep-well stratum bit pressure can be more importantly solved simultaneously applies difficult and bottom The problem of drilling tool stick-slip stall, bit speed is substantially increased, by the movement for realizing composite impact on single movement component Effect can make the depth down on drill teeth wedging stratum, also increase the energy of drill bit shearing broken rock.Also, simplify underground The power output structure of tool can not only be rotated using the pintle of impeller-driven by certain frequency, and can be according to tool to frequency The structural parameters of impeller-driven unit are adjusted in the requirement of rate.Tool, driving portion are exported compared to other similar well dynamics Structure, the length divided greatly simplify, and have widened composite impact tool in the scope of application of underground.The composite impact structure of optimization, It avoids axis punching from rushing formal simple superposition with torsion, simplifies tool construction and size, tool itself adapts to the energy of different operating conditions Power gets a promotion, and is more advantageous to the safety work of underground.

In addition, composite impact tool provided in this embodiment, it can not be normal even if failing in the certain components of tool interior Work, the torque of drilling rod transmitting can still be by outer housing and be transmitted on the second connector, and only the speed-increasing effect of tool disappears at this time It loses, does not influence the normal drilling of underground.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of composite impact tool characterized by comprising outer housing and the movement list being contained in inside the outer housing Member；

The motor unit includes jump bit and valve cylinder；

The jump bit includes hammer cylinder and hammer body, and the hammer body is fixed on the lateral surface of the hammer cylinder；

The valve cylinder is set on the outside of the jump bit, and the medial surface of the valve cylinder is provided with helical form guide-track groove；The hammer Body is contained in the guide-track groove, and the guide-track groove is separated into upper hydraulic cavities and lower hydraulic pressure chamber, and the lower end of the guide-track groove Inwardly projecting formation shock surface；The lower end of the valve cylinder with the second connector for connecting；

The intracorporal cleaner for high-pressure drilling fluid of shell alternately enters the upper hydraulic cavities and the lower hydraulic pressure chamber drives the hammer body edge The guide-track groove slides up and down, so that the lower end surface of the hammer cylinder and the shock surface collide or far from the shock surface.

2. composite impact tool according to claim 1, which is characterized in that further include power unit；

The motor unit further includes with flow cartridge；First is provided on the side wall with flow cartridge with circulation road and second with circulation Road；Described first with circulation road be it is multiple, being provided at circumferentially spaced along described with flow cartridge；Described second with circulation road be it is multiple, Along being provided at circumferentially spaced with flow cartridge, and each described second is arranged with circulation road in two neighboring first flow Centre in the circumferential direction of channel；Described first matches the axially spaced pre-determined distance of circulation road with circulation road and described second；

The hammer cylinder is set in the outside for matching flow cartridge, offers the first inlet and the second feed liquor on the side wall of the hammer cylinder Mouthful, and the hammer body is arranged between first inlet and second inlet；

The power unit is fixedly connected with the upper end with flow cartridge, for drive it is described rotated with flow cartridge so that described the One matches circulation road and the second inlet alternate communication with circulation road and first inlet and described second, and then makes height Pressure drilling fluid alternately enters the upper hydraulic cavities and the lower hydraulic pressure chamber, to push the hammer body to glide along the guide-track groove It is dynamic.

3. composite impact tool according to claim 2, which is characterized in that the motor unit further includes packing cylinder；Institute It states the setting of packing cylinder to match between flow cartridge and the hammer cylinder described, and the lower end of the packing cylinder and the lower end of the valve cylinder are fixed Connection；

The first flow channels and the second flow channels, and first flow channels and institute are offered on the side wall of the packing cylinder It states the first inlet and is in connected state always, second flow channels and second inlet are in connected state always State；

The power unit driving is described to be rotated with flow cartridge, so that described first matches circulation road and first flow channels and institute Second is stated with circulation road and the second flow channels alternate communication, and then cleaner for high-pressure drilling fluid is made to alternately enter the upper hydraulic cavities With the lower hydraulic pressure chamber, to push the hammer body to slide up and down along the guide-track groove.

4. composite impact tool according to claim 3, which is characterized in that the motor unit further includes and the flow The aerial drainage spray seat that cylinder lower end abuts；

The axial centre of the aerial drainage spray seat offers central passage, and the side wall of the central passage offers discharge orifice；It is described Discharge orifice is used to be connected to the central passage and the packing cylinder and the annular space between flow cartridge.

5. according to the described in any item composite impact tools of claim 2-4, which is characterized in that the power unit includes: rotation Shaft and impeller；

The central part of the impeller is provided in the axial direction with through-hole, and the impeller is set in the outside of the rotary shaft, the center Portion offers the first flowing hole being connected to the through-hole；

The rotary shaft is provided in the axial direction with central passage, and the rotary shaft is also provided with second be connected to the central passage Flowing hole, second flowing hole are connected to first flowing hole；

The lower end of the rotary shaft is fixedly connected with the upper end with flow cartridge.

6. composite impact tool according to claim 5, which is characterized in that the power unit further includes current divider；

The upper end of the rotary shaft is arranged in the current divider, and the axial centre of the current divider offers shunting through-hole, described Through-hole is shunted to be connected to the central passage of the rotary shaft；Annular space and the impeller between the current divider and the outer housing Annular space connection between the outer housing.

7. composite impact tool according to claim 6, which is characterized in that the power unit further includes baffle；Institute State the outside that baffle is set in the impeller；

Be provided with flow-guiding channel on the baffle, the inlet of the flow-guiding channel and the current divider and the outer housing it Between annular space connection, the annular space between the liquid outlet of the flow-guiding channel and the baffle and the impeller is connected to.

8. composite impact tool according to claim 7, which is characterized in that the baffle includes upper annulus, lower annulus And the guide vane between the upper annulus and the lower annulus is set；

The outer edge of the upper annulus offers diversion trench, the inlet of the diversion trench and the current divider and the outer housing Between annular space connection, the annular space between the liquid outlet of the diversion trench and the guide vane and the outer housing is connected to；

The guide vane be it is multiple, the guide vane is provided at circumferentially spaced along the upper annulus, two adjacent guide vanes it Between be provided with flow guiding slit；

Annular space, the flow guiding slit between the diversion trench, the guide vane and the outer housing form the flow-guiding channel.

9. composite impact tool according to claim 1-4, which is characterized in that the upper end of second connector with The lower end of the valve cylinder abuts, and the lower end of second connector with drill bit for being fixedly connected；

Second upper end of joint and the outer housing lower end are rotatablely connected.

10. composite impact tool according to claim 9, which is characterized in that the medial surface of the outer housing lower end opens up There is first annular groove, the lateral surface of second upper end of joint offers the second annular in the position of the first annular groove Groove；

The first annular groove and the second annular groove surround the annular accommodating chamber for accommodating steel ball.