CN106593296B - Downhole double-acting accelerator - Google Patents

Abstract

The invention provides a downhole double-acting accelerator, comprising: from last to the top connection that just inside link up of threaded connection down in order, go up casing, well casing and casing down, go up the inside axial steady voltage structure that is equipped with of casing, state the inside that the lower extreme of axial steady voltage structure extends well casing, the inside of well casing is equipped with circumference impact structure, and the upper end of circumference impact structure is supported with the lower extreme of axial steady voltage structure each other, and the lower extreme of circumference impact structure runs through casing down and stretches out the outside to casing down. The axial pressure stabilizing structure can stabilize the axial pressure on the drill bit and apply axially stable thrust to the drill bit, and the circumferential impact structure can provide circumferential impact force for the drill bit and improve the drilling speed.

Description

Underground double acting accelerator

Technical field

The present invention relates to downhole tool technical fields, refer in particular to a kind of underground double acting accelerator.

Background technique

Petroleum drilling technology development is to make great efforts to reduce drilling cost, the success rate for improving probing, improve drilling well speed at all Degree, the quality for guaranteeing drilling well and the purpose for realizing geological prospecting or oil field development.New theory, new technology, new process research with Using the theme for being petroleum drilling technology development.

In petroleum conventional drilling, PDC drill bit is widely used, however, when operating at the scene, often because of department Brill technology, experience problem or because of borehole wall frictional resistance problem, cause to be applied to drill bit so that send brill not in time or send drill-through fast Bit pressure it is unstable, efficiency of breaking rock is influenced, it could even be possible to damaging the cutting of drill bit, the drill bit that bursts apart because bit pressure increases suddenly Tooth etc., influences rate of penetration.On the other hand, PDC drill bit is when boring hard or abrasive layer, and usually not enough torques are broken Broken stratum, so that drill bit moment be made to stop operating.At this moment, in drill string, drill string can tighten torsional energy storage as clockwork spring, Once torque needed for producing shearing-crushing stratum, drill string energy will discharge, and apply on PDC tooth and obtain than usually high More shock loadings is finally crushed Adamas cutting tooth and drill bit is caused to fail.In drilling process, mistake is made a trip and replaced The PDC drill bit of effect is to cause the increased key factor of drilling cost.It should be evident that PDC in the case of above-mentioned two kinds Service life greatly shortens, and after PDC failure, rate of penetration also be will be greatly reduced, and from the efficiency of drilling well, also increase The cost of drilling well.And it can not solve the problems, such as above two tool simultaneously in the prior art.

Summary of the invention

Increase the impact of drill bit the object of the present invention is to provide a kind of pressure that energy steady drill bit is subject to, in drilling process The underground double acting accelerator of power.

In order to achieve the above objectives, the present invention provides a kind of underground double acting accelerators, wherein the underground double acting mentions Fast device include: from top to bottom sequentially be threadedly coupled and internal run-through top connection, upper housing, middle shell and lower case, it is described on Enclosure interior is equipped with axial structure of voltage regulation, the lower end of the axial structure of voltage regulation extends to the inside of the middle shell, the middle shell The inside of body is equipped with circumferential impact structure, and the upper end of the circumferential direction impact structure and the lower end of the axial structure of voltage regulation are mutually pushed up It supports, the lower end of the circumferential direction impact structure runs through the lower case and extend out to the outside of the lower case.

Double acting accelerator in underground as described above, wherein the axial direction structure of voltage regulation includes upper piston and upper core pipe, institute Stating upper piston and the upper core pipe is inner hollow shape, and the upper piston is slidably arranged in the inside of the upper housing, and institute The outer wall of upper piston and the inner wall palette of the upper housing are stated, the upper end of the upper core pipe stretches to the interior of the upper piston Portion is simultaneously threadedly coupled with the upper piston, and the lower end of the upper core pipe is stretched to the inside of the middle shell by the upper housing； Along the radial direction of the upper housing, annular convex platform is formed towards the direction that diameter reduces on the inner wall of the lower end of the upper housing, The inner wall palette of the outer wall of the upper core pipe and the annular convex platform, the lower end surface of the piston, the upper housing it is interior The upper surface of wall, the outer wall of the upper core pipe and the annular convex platform is enclosed the first ring cavity, the side wall of the upper housing On offer pressure stable hole, the pressure stable hole is connected to the outside of first ring cavity and the upper housing.

Double acting accelerator in underground as described above, wherein the circumferential direction impact structure includes rotation impact assembly, lower work Plug and lower core pipe, the rotation impact assembly and the lower piston are respectively positioned on the inside of the middle shell, the lower piston it is outer The inner wall palette of wall and the middle shell, the lower end of the rotation impact assembly stretch to the interior of the upper end of the lower piston Portion, and the upper end of the rotation impact assembly and the upper mutual contact of core pipe, the upper surface, described of the rotation impact assembly The inner wall of middle shell, the lower end surface of the upper housing and the outer wall of the upper core pipe are enclosed the second ring cavity, the lower core pipe Upper end connect in the inside of the middle shell with the lower thread of the lower piston, the lower end of the lower core pipe is under described The outside of the lower case is extend out to after shell.

Double acting accelerator in underground as described above, wherein the lower piston is in hollow tubular up and down, under described Piston from top to bottom includes integrally formed upper section, middle section and lower section, and the rotation impact assembly is set to the upper of the lower piston The upper end of intersegmental part, the lower core pipe is connect with the lower thread of the lower piston；

Two dredging flow grooves, and the inner wall of the upper section of the lower piston are symmetrically recessed on the inner wall of the upper section of the lower piston It is upper symmetrical it is recessed there are two radial section be fan-shaped fan groove, and along the radial direction of the lower piston, two fan grooves The line at center is vertical with the line at center of two dredging flow grooves；Correspond on the outer wall of the upper section of the lower piston each described Respectively it is recessed with a drainage trough at position between fan groove and adjacent two dredging flow grooves, it is each dredging flow groove, each described Fan groove and each drainage trough offer at least one along the axially extending of the lower piston, each drainage trough Along the conduction hole of the side wall for extending radially through the lower piston of the lower piston；

The internal diameter in the middle section of the lower piston be less than the lower piston upper section internal diameter, the middle section of the lower piston it is interior Wall protrudes from the inner wall of the upper section of the lower piston, along the radial direction of the lower piston, the lower end in the middle section of the lower piston Positive stop lug boss is formed towards the direction that diameter reduces on inner wall；

The internal diameter of the lower section of the lower piston is greater than the internal diameter in the middle section of the lower piston, and the lower section of the lower piston Internal diameter is less than the internal diameter of the upper section of the lower piston.

Double acting accelerator in underground as described above, wherein the rotation impact assembly includes hammering block, commutation body, filter cylinder And gland；

The filter cylinder includes integrally formed upper section and lower section, and the upper section of the filter cylinder is located at the upper section of the lower piston Inside is uniformly provided with multiple filter openings along the radial direction of the filter cylinder on the side wall of the upper section of the filter cylinder, under the filter cylinder Section is located at the inside in the middle section of the lower piston, and the bottom of the filter cylinder is resisted against on the positive stop lug boss, the filter cylinder The outer diameter of lower section is greater than the outer diameter of the upper section of the filter cylinder, and the outer wall of the lower section of the filter cylinder protrudes from the upper section of the filter cylinder Outer wall, the junction of the outer wall of the lower section of the upper surface of the lower section of the filter cylinder and the filter cylinder form from top to bottom flaring shape Guiding incline, in the state that the bottom of the filter cylinder is resisted against on the positive stop lug boss, the upper surface of the lower section of the filter cylinder with The upper surface in the middle section of the lower piston is concordant；

The commutation body is sheathed on the outside of the upper section of the filter cylinder, and the lower end of the commutation body is resisted against the filter cylinder Lower section upper surface on, the hammering block is set in the outside of the commutation body, and the lower piston is set in the hammering block Outside, the lower end of the hammering block are resisted against on the upper surface in the middle section of the lower piston, the inner wall of the lower piston and the anvil The outer wall of son is bonded contact, and the inner wall of the hammering block is contacted with the outer wall fitting of the commutation body, the inner wall of the commutation body It is contacted with the fitting of the outer wall of the filter cylinder, the upper surface of the lower piston, the upper surface of the hammering block and the upper of body that commutate End face is concordant, and the gland is set in the outside of the filter cylinder and contacts with the fitting of the outer wall of the filter cylinder, and the gland pressure Compel the upper surface of the lower piston, the upper surface of the hammering block and it is described commutation body upper surface on, the middle shell it is interior Wall, the lower end surface of the upper housing, the outer wall of the upper core pipe and the upper surface of the gland are enclosed the second ring cavity, described The inside of upper core pipe is connected with the inside of the filter cylinder, second ring cavity respectively.

Double acting accelerator in underground as described above, wherein the mistake being connected with each drainage trough is offered on the gland Discharge orifice.

Double acting accelerator in underground as described above, wherein limit is convexly equipped on the inner wall of the lower end of the upper section of the filter cylinder Position ring, and the inside of the upper section of the filter cylinder was equipped with flow nozzle, the lower end surface for crossing flow nozzle is resisted against the stop collar Upper surface on, the flow nozzle of crossing is inner hollow and tubular structure up and down, and the internal diameter for crossing flow nozzle is less than The internal diameter of the upper section of the filter cylinder, and the inner wall of the upper section of the outer wall for crossing flow nozzle and the filter cylinder fits closely setting.

Double acting accelerator in underground as described above, wherein the inner wall of the upper section of the lower piston and the lower piston The junction of the inner wall in middle section is formed with the aerial drainage guide surface being from top to bottom in gradually-reducing shape, the aerial drainage guide surface, the hammering block Lower end surface, it is described commutation body lower end surface and the guiding incline be enclosed aerial drainage ring cavity, the top of the aerial drainage guide surface The distance between inner wall of upper section of edge and the lower piston is less than the sidewall thickness of the upper section of the piston, the aerial drainage ring Chamber is connected to the dredging flow groove.

Double acting accelerator in underground as described above, wherein offer on the guiding incline and led described in multiple extend vertically through The discharge orifice on inclined-plane, the discharge orifice are connected to the inside of the lower section of the aerial drainage ring cavity and the filter cylinder.

Double acting accelerator in underground as described above, wherein at least one circulation is offered on the side wall of the lower piston Hole, each circulation port are connected to one and the aerial drainage ring cavity in a plurality of drainage trough.

Double acting accelerator in underground as described above, wherein there are two fan-shaped for symmetrical projection on the outer wall of the hammering block Block, in the state that the lower piston is sheathed on the outside of the hammering block, two sectorial blocks are inserted into two fans respectively In shape slot, the radial section product of the fan groove is greater than the radial section product of the sectorial block, in the lower piston and the anvil In the state of producing relative rotation between son, the sectorial block can move in the fan groove；

There are two limited block, two sectorial blocks and the two equal edges of limited block for symmetrical projection on the inner wall of the hammering block The axis of the hammering block extend, and along the radial direction of the hammering block, the line of centres of two limited blocks is perpendicular to described in two The line of centres of sectorial block；

It is close to the two sides of each sectorial block, and is close to the two sides of each limited block, on the side wall of the hammering block respectively Offer through the hammering block side wall channel, positioned at each limited block two sides channel can the hammering block and it is described under It is connected in the state of producing relative rotation between piston to predetermined position with the dredging flow groove.

Double acting accelerator in underground as described above, wherein the outer wall of the commutation body is concavely provided with four and is uniformly distributed Gas pressure relief slot, each gas pressure relief slot is axially extending each along the commutation body, and each gas pressure relief slot upwardly extends pass through respectively The upper surface of the commutation body is worn, each gas pressure relief slot extends through the lower end surface of the commutation body, every two phases separately down The fan-shaped convex block of radial section is formed between the adjacent gas pressure relief slot, the convex block includes two the first convex blocks and two second Convex block；

Two first convex blocks are symmetrical along the axis centre of the commutation body, recessed respectively on two first convex blocks There is limiting slot, two limiting slots are along the axially extending of the commutation body, and two limiting slots are changed along described respectively To the upper surface of body extended axially upward and run through the commutation body, two limiting slots are respectively along the commutation body The lower end surface for extending axially downward and not running through the commutation body is sheathed on the shape in the outside of the commutation body in the hammering block Under state, the limited block is stretched in the limiting slot, along the radial direction of the commutation body, the radial section product of the limiting slot Greater than the radial section product of the limited block, in the state of producing relative rotation between the hammering block and the commutation body, institute Stating limited block can move in the limiting slot；

Two second convex blocks are symmetrical along the axis centre of the commutation body, open respectively on two second convex blocks Equipped at least a pair of through-hole for extending radially through the commutation body along the commutation body, and along the center of second convex block With the line at the center of the radial section of the commutation body, two through-holes in each pair of through-hole are symmetrical, in institute It states limited block to be resisted against in the state of the side of the limiting slot, is located at institute on one in each pair of through-hole and the hammering block A connection in the channel of the two sides of sectorial block is stated, and is resisted against the state of the other side of the limiting slot in the limited block Under, in each pair of through-hole another and on the hammering block positioned at the sectorial block two sides channel in another company It is logical.

Double acting accelerator in underground as described above, wherein spline, institute are equipped between the lower core pipe and the lower case Stating spline includes on key teeth and multiple inner walls that the lower case is arranged on multiple outer walls that the lower core pipe is arranged in Keyway, the key teeth is arranged in a one-to-one correspondence with the keyway, along the radial direction of the lower case, the radial section of the keyway Product is greater than the radial section product of the key teeth, all has between the two sides of each key teeth and the two sidewalls of the corresponding keyway Gap, in the state that the lower piston drives lower core pipe rotation, the key teeth can move in the corresponding keyway.

Compared with prior art, advantages of the present invention is as follows:

The present invention by be arranged axial structure of voltage regulation can the axial compressive force that is subject to of steady drill bit, apply for drill bit axial steady Fixed thrust, while by the way that circumferential impact structure is arranged, circumferential impact force can be provided for drill bit, improve bit speed.

Detailed description of the invention

The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:

Fig. 1 is the external structure schematic diagram of double acting accelerator in underground provided by the invention；

Fig. 2 is the lateral sectional view of double acting accelerator in underground provided by the invention；

Fig. 3 is the structure enlargement diagram in Fig. 2 at A；

Fig. 4 is the external structure schematic diagram of the lower piston of double acting accelerator in underground provided by the invention；

Fig. 5 is the lateral sectional view of the lower piston of double acting accelerator in underground provided by the invention；

Fig. 6 is the top cross-sectional view of the lower piston of double acting accelerator in underground provided by the invention；

Fig. 7 is the main view of the hammering block of double acting accelerator in underground provided by the invention；

Fig. 8 is the side view of the hammering block of double acting accelerator in underground provided by the invention；

Fig. 9 is the top cross-sectional view of the hammering block of double acting accelerator in underground provided by the invention；

Figure 10 is the lateral sectional view of the commutation body of double acting accelerator in underground provided by the invention；

Figure 11 is the top cross-sectional view of the commutation body of double acting accelerator in underground provided by the invention；

Figure 12 is the side view partial cutaway schematic of the filter cylinder of double acting accelerator in underground provided by the invention；

Figure 13 is the diagrammatic cross-section along Fig. 2 section line B-B；

Figure 14 A, Figure 14 B, Figure 14 C, Figure 14 D, Figure 14 E and Figure 14 F are double acting accelerators in underground provided by the invention Impact process schematic diagram；

Figure 15 A, Figure 15 B, Figure 15 C, Figure 15 D, Figure 15 E and Figure 15 F are double acting accelerators in underground provided by the invention Return stroke schematic diagram.

Drawing reference numeral explanation:

1 top connection

2 upper housings

21 annular convex platform

22 first ring cavities

23 pressure stable holes

Shell in 3

31 second ring cavities

4 lower cases

41 splines

411 key teeths

412 keyways

5 axial structure of voltage regulation

51 upper pistons

Core pipe on 52

6 circumferential impact structures

61 rotation impact assemblies

611 hammering blocks

6111,6111A sectorial block

6112,6112A, 6112B limited block

6113 channels

612 commutation bodies

6121 gas pressure relief slots

6122, the first convex block of 6122A

6123 limiting slots

6124 second convex blocks

6125 through-holes

613 filter cylinders

6131 upper sections

6132 lower sections

6133 filter openings

6134 guiding inclines

6135 discharge orifices

614 glands

6141 back of the body cap

6145 stop collars

615 cross flow nozzle

62 lower pistons

621 upper sections

6211 dredging flow grooves

6212,6212A fan groove

6213 drainage troughs

6214 conduction holes

622 middle sections

6221 positive stop lug boss

623 lower sections

624 aerial drainage guide surfaces

625 aerial drainage ring cavities

626 circulation ports

63 lower core pipes

Specific embodiment

In order to have clearer understanding to technical solution of the present invention, purpose and effect, now in conjunction with the Detailed description of the invention present invention Specific embodiment.

As shown in Figures 1 and 2, the present invention provides a kind of underground double acting accelerators, wherein underground double acting accelerator Include: from top to bottom sequentially be threadedly coupled and internal run-through top connection 1, upper housing 2, middle shell 3 and lower case 4, wherein on The upper end of shell 2 is connected with top connection 1, and integrally formed with lower contact, lower contact is used to connect drill bit for the lower end of lower case 4, on Axial structure of voltage regulation 5 is equipped with inside shell 2, the lower end of axial structure of voltage regulation 5 extends to the inside of middle shell 3, the inside of middle shell 3 Equipped with circumferential impact structure 6, the mutual contact in lower end of the upper end of circumferential impact structure 6 and axial structure of voltage regulation 5, circumferential impact knot The lower end of structure 6 runs through lower case 4 and extend out to the outside of lower case 4.When in use, it is mentioned by axial structure of voltage regulation 5 for drill bit For stable axial thrust, prevent be applied to drill bit bit pressure it is unstable, influence efficiency of breaking rock, it could even be possible to because bore It presses and the case where influencing rate of penetration generation such as increases and damage the cutting tooth of drill bit, the drill bit that bursts apart suddenly；Pass through setting week simultaneously To impact structure 6, the circumferential impact drilling power of high frequency can be provided for drill bit, improved efficiency of breaking rock, avoided the occurrence of since rock is hard It spends higher and drill bit is caused to stop simultaneously stress rupture, cause to creep into the case where interrupting.

To sum up, a kind of underground double acting accelerator provided by the invention can apply axial thrust and circumferential direction to drill bit Impact force improves bit speed to improve drill bit efficiency of breaking rock.

Further, as shown in Fig. 2, the present invention provides a kind of underground double acting accelerators, wherein axial structure of voltage regulation 5 include upper piston 51 and upper core pipe 52, and upper piston 51 and upper core pipe 52 are inner hollow shape, enter upper casing from top connection 1 High-pressure slurry inside body 2 can pass through the inside of shell 3 in upper piston 51 and the arrival of upper core pipe 52, and upper piston 51 is slidably arranged in The inside of upper housing 2, i.e. upper piston 51 can slide up and down in the inside of upper housing 2 along the axial direction of upper housing 2 and drive upper core Pipe 52 moves up and down, and the inner wall palette of the outer wall of upper piston 51 and upper housing 2, the upper end of upper core pipe 52 stretch to work The inside of plug 51 is simultaneously threadedly coupled with upper piston 51, and the lower end of upper core pipe 52 is stretched to the inside of middle shell 3 by upper housing 2, is made The high-pressure slurry that enters inside upper housing 2 cannot be introduced between upper piston 51 and upper housing 2, but can only enter upper piston 51 inside and along upper core pipe 52 move downward and enter in shell 3, and continue downwards into lower case 4 and from lower case 4 Flowing out between the present invention and pit shaft becomes low pressure mud, is equivalent to and is separated out a mud runner in the inside of upper housing 2；Edge The radial direction of upper housing 2, form annular convex platform 21, upper core pipe towards the direction that diameter reduces on the inner wall of the lower end of upper housing 2 The inner wall palette of 52 outer wall and annular convex platform 21, the lower end surface of piston, the inner wall of upper housing 2, upper core pipe 52 outer wall And the upper surface of annular convex platform 21 is enclosed the first ring cavity 22, offers pressure stable hole 23, pressure stable hole on the side wall of upper housing 2 The outside of 23 the first ring cavities of connection 22 and upper housing 2, the low pressure mud being flowed between the present invention and pit shaft at this time pass through pressure stabilizing Hole 23 reaches the inside of the first ring cavity 22, it is to be understood that the inside of upper housing 2 forms two cavitys, and a receiving is low Press mud is the first ring cavity 22, the other is the mud runner of high-pressure slurry is accommodated, inside upper piston 51 and upper core pipe 52 High-pressure slurry and the first ring cavity 22 in low pressure mud between form pressure difference, mention under the action of pressure difference for upper piston 51 For stable thrust, and due to the presence of 22 mesolow mud of the first ring cavity, even if pressure change occurs at high-pressure slurry, by Shadow of the pressure change to upper piston 51, upper core pipe 52 or even drill bit of high-pressure slurry can be slowed down in the buffer function of low pressure mud It rings, guarantees double acting accelerator in underground provided by the invention by stable axial thrust.It can be interpreted as, normal drilling well When, mud is pumped into inside the present invention, flows to drill bit, then be discharged into pit shaft through drill bit, is returned in the ring cavity between pit shaft and the present invention Ground is gone back to, is apparent from, the mud inside the present invention is high-pressure slurry, and the mud in ring cavity between the present invention and pit shaft is low pressure mud Slurry, therefore, acting on 51 upper surface of upper piston is high-pressure slurry, and acting on 51 lower end surface of upper piston is low pressure mud, in this mud It starches under differential pressure action, 51 upper pistons drive upper 52 downlink of core pipe by 2 inner downlink of drives edge upper housing, and then push lower core The also downlink of pipe 63 stretches out lower core pipe 63 outside lower case 4.

In the case where mud displacement and certain bit parameter, the mud pressure difference of two end faces up and down of upper piston 51 is also Certain, it is also fixed for being formed by thrust, so the thrust of present invention entirety is row that is constant, stretching out with lower core pipe 63 Journey length is not related.In this way, ensuring that bit pressure suffered by drill bit is in stable state always.

Further, as shown in Figures 2 and 3, the present invention provides a kind of underground double acting accelerators, wherein circumferential punching Hitting structure 6 includes rotation impact assembly 61, lower piston 62 and lower core pipe 63, rotation impact assembly 61, lower piston 62 and lower core pipe 63 be inner hollow shape, and the high-pressure slurry in upper core pipe 52 can pass through lower piston 62, rotation impact assembly 61 and lower piston 62 It is respectively positioned on the inside of middle shell 3, the inner wall palette of the outer wall of lower piston 62 and middle shell 3, and lower piston 62 can be in The axial of shell 3 moves up and down and lower core pipe 63 is driven to move up and down, and the lower end of rotation impact assembly 61 stretches to lower piston 62 Upper end inside, and rotate upper end and the mutual contact of upper core pipe 52 of impact assembly 61, upper piston 51 pushes in upper core pipe 52 While lower movement, upper core pipe 52 pushes rotation impact assembly 61 and lower piston 62 to move up and down and driven in lower core pipe 63 together Lower movement, so that the drill bit of the lower end of lower core pipe 63, which moves downward, carries out drilling work, the lower end for showing as lower core pipe 63 is stretched out Or lower case 4 is retracted, under the action of slurry fluid, lower core pipe 63 can stretch out, and then push drill bit drilling；Rotate impact assembly 61 upper surface, the inner wall of middle shell 3, the lower end surface of upper housing 2 and the outer wall of upper core pipe 52 are enclosed the second ring cavity 31, under The upper end of core pipe 63 is connect in the inside of middle shell 3 with the lower thread of lower piston 62, and the lower end of lower core pipe 63 is downward through under The outside that lower case 4 is extend out to after shell 4 is connect with drill bit, the high-pressure slurry in upper core pipe 52, a part from upper core pipe 52 with Gap between rotation impact assembly 61 enters in the second ring cavity 31, and another part is directly entered rotation impact from upper core pipe 52 The inside of component 61, under the pressure effect of two parts high-pressure slurry, driving rotation impact assembly 61 carries out rotation impact and band Dynamic lower piston 62, lower core pipe 63 and drill bit carry out circumferential impact together.It should be understood that core pipe 63 stretches out certain length instantly When afterwards, the lower end surface of lower piston 51 is bonded with the upper surface of lower case 4, continue lower core pipe can not protruding, to prevent down Core pipe 63 is fallen.

Further, as shown in Fig. 2~Fig. 6, the present invention provides a kind of underground double acting accelerators, wherein lower to live For plug 62 in hollow tubular up and down, lower piston 62 from top to bottom includes integrally formed upper section 621, middle section 622 and lower section 623, rotation impact assembly 61 is set to inside the upper section 621 of lower piston 62, and rotation impact assembly 61 can be generated with lower piston 62 The upper end of a certain range of relative rotation, lower core pipe 63 is connect with the lower thread of lower piston 62, lower core pipe 63 and lower piston 62 Between keep opposing stationary, drive lower core pipe 63 to rotate together when lower piston 62 rotates；

Two dredging flow grooves 6211, high-pressure slurry driving rotation punching are symmetrically recessed on the inner wall of the upper section 621 of lower piston 62 The middle section 622 of lower piston 62 and the lower section 623 of lower piston 62 are flowed downwardly to from dredging flow groove 6211 after hitting the rotation impact of component 61, And finally flow into lower core pipe 63, and on the inner wall of the upper section 621 of lower piston 62 it is symmetrical it is recessed there are two radial section be sector Fan groove 6212, high-pressure slurry by being flowed in and out from the two sides of fan groove 6212 during driving rotation impact assembly 61 carry out rotation impact, and along the radial direction of lower piston 62, the line at the center of two fan grooves 6212 and two dredging flow grooves 6211 The line at center is vertical；Correspond to each fan groove 6212 and two adjacent dredging flow grooves on the outer wall of the upper section 621 of lower piston 62 A drainage trough 6213, each dredging flow groove 6211, each fan groove 6212 and each drainage trough are respectively recessed at position between 6211 6213 offer at least one along the radial direction of lower piston 62 along the axially extending of lower piston 62, each drainage trough 6213 Through the conduction hole 6214 of the side wall of lower piston 62, wherein conduction hole 6214 be can be set multiple, and multiple conduction holes 6214 from It is arranged under, the high-pressure slurry in the second ring cavity 31 enters drainage trough 6213 and enters rotation punching along conduction hole 6214 It hits in component 61 and it is driven, it is made to carry out rotation impact；

The internal diameter in the middle section 622 of lower piston 62 is less than the internal diameter of the upper section 621 of lower piston 62, the middle section 622 of lower piston 62 Inner wall protrude from lower piston 62 upper section 621 inner wall, along the radial direction of lower piston 62, under the middle section 622 of lower piston 62 Positive stop lug boss 6221, the i.e. upper section 621 of lower piston 62 and lower piston 62 are formed towards the direction that diameter reduces on the inner wall at end The junction in middle section 622 forms step surface；

The internal diameter of the lower section 623 of lower piston 62 is greater than the internal diameter in the middle section 622 of lower piston 62, to guarantee to impact across rotation The mud of component 61 and lower piston 62 is quickly discharged, and should ensure that the internal diameter of lower core pipe 63 is not less than the middle section 622 of lower piston 62 Internal diameter, simultaneously because the tube wall of lower core pipe 63 has certain thickness, so to guarantee that the internal diameter of lower core pipe 63 is not less than lower piston The internal diameter of the lower section 623 of lower piston 62 should be set as the internal diameter in the middle section 622 greater than lower piston 62 by the internal diameter in 62 middle section 622, Preferably, the internal diameter of the lower section 623 of lower piston 62 should be greater than the middle section 622 of lower piston 62 internal diameter and twice of lower core pipe 63 The sum of wall thickness, but it should be recognized that in the case where can be realized that mud is normally quickly discharged inside the present invention, lower piston The internal diameter of 62 lower section 623 can also be no more than the internal diameter in the middle section 622 of lower piston 62, and the present invention is not limited thereto；Under and The internal diameter of the lower section 623 of piston 62 is less than the internal diameter of the upper section 621 of lower piston 62, it should be noted that the lower section of lower piston 62 For 623 internal diameter it is not necessary to being less than the internal diameter of the upper section 621 of lower piston 62, those skilled in the art can be according to practical feelings Condition flexibly determines the internal diameter of 62 each sections of lower piston, and the present invention is not limited thereto.

Further, as shown in Fig. 2, Fig. 3 and Fig. 7~Figure 13, the present invention provides a kind of underground double acting accelerator, Wherein, rotation impact assembly 61 includes hammering block 611, commutation body 612, filter cylinder 613 and gland 614, commutation body 612, hammering block 611, Lower piston 62 is successively radial to be installed from inside to outside, under the action of mud pressure, 611 energy rotary impact lower piston 62 of hammering block, and Impact is passed to lower core pipe 63, thus circumferential drill hammer；

Filter cylinder 613 includes integrally formed upper section 6131 and lower section 6132, and the upper section 6131 of filter cylinder 613 is located at lower piston 62 The inside of upper section 621 be uniformly provided with multiple filter openings on the side wall of the upper section 6131 of filter cylinder 613 along the radial direction of filter cylinder 613 6133, the high-pressure slurry flowed into rotation impact assembly 61 from upper core pipe 52 all flows into filter cylinder 613, reaches in filter cylinder 613 High-pressure slurry a part flowed downwardly into lower core pipe 63 along filter cylinder 613, another part pass through filter opening 6133 reach filter cylinder 613 Outside, and pass through filter opening 6133 reach filter cylinder 613 outside high-pressure slurry pressure as driving rotate 61 turns of impact assembly The driving force of dynamic impact；The lower section 6132 of filter cylinder 613 is located at the inside in the middle section 622 of lower piston 62, and the bottom of filter cylinder 613 (i.e. the lower end of the lower section 6132 of filter cylinder 613) is resisted against on positive stop lug boss 6221, and the outer diameter of the lower section 6132 of filter cylinder 613 is greater than filter The outer diameter of the upper section 6131 of cylinder 613, the outer wall of the lower section 6132 of filter cylinder 613 protrude from the outer wall of the upper section 6131 of filter cylinder 613, filter The junction of the outer wall of the lower section 6132 of the upper surface and filter cylinder 613 of the lower section 6132 of cylinder 613 forms flaring shape from top to bottom Guiding incline 6134, in the state that the bottom of filter cylinder 613 is resisted against on positive stop lug boss 6221, the lower section 6132 of filter cylinder 613 it is upper End face is concordant with the upper surface in middle section 622 of lower piston 62；

Commutation body 612 is sheathed on the outside of the upper section 6131 of filter cylinder 613, and the lower end for the body 612 that commutates is resisted against filter cylinder 613 Lower section 6132 upper surface on, hammering block 611 is set in the outside of commutation body 612, and lower piston 62 is set in the outer of hammering block 611 Side, the lower end of hammering block 611 are resisted against on the upper surface in middle section 622 of lower piston 62, due to the upper end of the lower section 6132 of filter cylinder 613 Face is concordant with the upper surface in middle section 622 of lower piston 62, and the lower end surface for the body 612 that commutates is concordant with the lower end surface of hammering block 611, lower work The inner wall of plug 62 is contacted with the fitting of the outer wall of hammering block 611, and the inner wall of hammering block 611 is contacted with the outer wall fitting of commutation body 612, is changed It is contacted to the inner wall of body 612 with the fitting of the outer wall of filter cylinder 613, the upper surface of lower piston 62, the upper surface of hammering block 611 and commutation body 612 upper surface is concordant, and gland 614 is set in the outside of filter cylinder 613 and contacts with the fitting of the outer wall of filter cylinder 613, and gland 614 It oppresses on the upper surface of the upper surface of lower piston 62, the upper surface of hammering block 611 and the body 612 that commutates, by the way that gland 614 is arranged, It is able to maintain the relative position of lower piston 62, hammering block 611, commutation body 612 and filter cylinder 613, lower work is made when moving axially Plug 62, hammering block 611, commutation body 612 and filter cylinder 613 are synchronized and are axially moved, the lower end of the inner wall of middle shell 3, upper housing 2 The upper surface in face, the outer wall of upper core pipe 52 and gland 614 is enclosed the second ring cavity 31, the inside of upper core pipe 52 respectively with filter cylinder 613 inside, the second ring cavity 31 are connected.

Preferably, as shown in Figures 2 and 3, the present invention provides a kind of underground double acting accelerators, wherein filter cylinder 613 Upper section 6131 lower end inner wall on be convexly equipped with stop collar 6145, and the inside of the upper section 6131 of filter cylinder 613 is sprayed equipped with overcurrent Mouth 615, cross flow nozzle 615 lower end surface be resisted against on the upper surface of stop collar 6145, cross flow nozzle 615 be inner hollow and on The internal diameter that the tubular structure of lower perforation, the excessively internal diameter of flow nozzle 615 are less than the upper section 6131 of filter cylinder 613, and cross flow nozzle 615 The inner wall of the upper section 6131 of outer wall and filter cylinder 613 fits closely setting.By the way that flow nozzle 615 was arranged so that high-pressure slurry from Circulation area when 613 bottom of filter cylinder is flowed out further decreases, and the pressure in filter cylinder 613 is improved by current limliting, and make filter cylinder The outside that the mud of more parts flow to filter cylinder 613 from filter opening 6133 in 613 drives commutation body 612 and hammering block 611.

Preferably, the present invention provides a kind of underground double acting accelerators, wherein offer on gland 614 and respectively draw The flowing hole that chute 6213 is connected.The high-pressure slurry in the second ring cavity 31 could be made to pass through gland by the way that flowing hole is arranged 614 and enter drainage trough 6213, thus pass through conduction hole 6214 enter lower piston 62 inside to rotation impact assembly 61 carry out Driving makes it generate circumferential impact.

Preferably, as shown in Figures 2 and 3, the present invention provides a kind of underground double acting accelerators, wherein gland 614 Top is equipped with back of the body cap 6141, and back of the body cap 6141 is set on the outer wall of filter cylinder, and the lower end surface of back of the body cap 6141 is resisted against gland 614 On upper surface, and the upper surface of back of the body cap 6141 is concordant with the upper surface of gland 614, and the lower end surface of upper core pipe 52 is resisted against back of the body cap On 6141 upper surface and the upper surface of gland 614.Upper core pipe 52 can be shared by setting back of the body cap 6141 to be applied on gland 614 Pressure, a part of pressure for applying core pipe 52 is transmitted on gland 614 by back of the body cap 6141, makes 614 stress of gland more Add uniformly.

Further, as depicted in figs. 3 and 5, the present invention provides a kind of underground double acting accelerators, wherein lower to live The junction of the inner wall in the middle section 622 of the inner wall and lower piston 62 of the upper section 621 of plug 62, which is formed with, to be from top to bottom in gradually-reducing shape Aerial drainage guide surface 624, can effectively be guided to the mud flowed out in dredging flow groove 6211 by setting aerial drainage guide surface 624 makes It is flowed towards the direction close to lower piston 62 middle section 622, aerial drainage guide surface 624, the lower end surface of hammering block 611, commutation body 612 Lower end surface and guiding incline 6134 are enclosed aerial drainage ring cavity 625, the top edge of aerial drainage guide surface 624 and the upper section of lower piston 62 The distance between 621 inner wall is less than the sidewall thickness of the upper section 621 of lower piston 62, aerial drainage ring cavity 625 and dredging flow groove 6211 Connection enters in aerial drainage ring cavity 625 from the mud flowed out in dredging flow groove 6211 along aerial drainage guide surface 624, and finally from letting out Flow the inside that the middle section 622 of lower piston 62 is flowed into ring cavity 625.

Preferably, as depicted in figs. 3 and 5, the present invention provides a kind of underground double acting accelerators, wherein guiding incline Multiple discharge orifices 6135 for extending vertically through guiding incline 6134 are offered on 6134, discharge orifice 6135 is connected to aerial drainage ring cavity 625 and filter The inside of the lower section 6132 of cylinder 613.The mud entered in aerial drainage ring cavity 625 flows into the lower section of filter cylinder 613 from discharge orifice 6135 It flows into behind 6132 inside in lower core pipe 63, and is discharged from lower core pipe 63.

Preferably, as depicted in figs. 3 and 5, the present invention provides a kind of underground double acting accelerators, wherein lower piston Offer at least one circulation port 626 on 62 side wall, each circulation port 626 be connected to one in a plurality of drainage trough 6213 and Aerial drainage ring cavity 625.The high-pressure slurry in the drainage trough 6213 of lower piston 62 can be made to recycle by the way that circulation port 626 is arranged, more Be conducive to drive rotation impact assembly 61, so that it is provided more strong circumferential impact force, to improve efficiency of breaking rock. Wherein, preferably, circulation port 626 be equipped with it is multiple, multiple circulation ports 626 are arranged in a one-to-one correspondence with a plurality of drainage trough 6213, i.e., The bottom of each drainage trough 6213 passes through a circulation port 626 and is connected to the inside of aerial drainage ring cavity 625.

Further, as shown in fig. 7~fig. 9, the present invention provides a kind of underground double acting accelerators, wherein hammering block There are two sectorial blocks 6111 for symmetrical projection on 611 outer wall, in the state that lower piston 62 is sheathed on the outside of hammering block 611, Two sectorial blocks 6111 are inserted into two fan grooves 6212 respectively, and the radial section product of fan groove 6212 is greater than sectorial block 6111 Radial section product, in the state of producing relative rotation between lower piston 62 and hammering block 611, sectorial block 6111 can be in fan groove It is moved in 6212, before not impacting, the side of sectorial block 6111 is resisted against on the side inner wall of fan groove 6212, in high pressure mud Hammering block 611 rotates under the action of slurry, until the other side of sectorial block 6111 is resisted against on the other side inner wall of fan groove 6212, it is complete At primary circumferential impact, sectorial block 6111 and fan groove 6212 are equivalent to the connecting elements between lower piston 62 and hammering block 611；

There are two limited block 6112, two sectorial blocks 6111 and two limited blocks 6112 for symmetrical projection on the inner wall of hammering block 611 Extend each along the axis of hammering block 611, and along the radial direction of hammering block 611, the line of centres of two limited blocks 6112 is perpendicular to two fans The line of centres of shape block 6111, limited block 6112 are used to constitute connecting elements between commutation body 612 and hammering block 611；

It is close to the two sides of each sectorial block 6111, and is close to the two sides of each limited block 6112, is opened respectively on the side wall of hammering block 611 Channel 6113 equipped with the side wall through hammering block 611, the channel 6113 positioned at each 6112 two sides of limited block can be in hammering block 611 under It is connected in the state of producing relative rotation between piston 62 to predetermined position with dredging flow groove 6211.The channel of 6111 two sides of sectorial block Gap of one of them of 6113 before not impacting between fan groove 6212 and sectorial block 6111 is connected to, so that hammering block 611 Internal high-pressure slurry is reached across channel 6113 side of sectorial block 6111 and the side inner wall of fan groove 6212, with The high-pressure slurry of 6111 side of sectorial block is more and more, pushes sectorial block 6111 mobile towards the other side, hammering block 611 rotates, directly On the other side inner wall for being resisted against fan groove 6212 to the other side of sectorial block 6111, primary circumferential impact is completed；It is impacting At later, another and the other side inner wall of fan groove 6212 and sectorial block 6111 in the channel 6113 of 6111 two sides of sectorial block it Between gap connection so that high-pressure slurry hammering block 611 inside passes through the other side and the fan of the arrival of channel 6113 sectorial block 6111 Between the other side inner wall of shape slot 6212, as the high-pressure slurry of 6111 other side of sectorial block is more and more, sectorial block is pushed 6111 is mobile towards side, and hammering block 611 rotates, until the side of sectorial block 6111 is resisted against the side inner wall of fan groove 6212 On, complete a return stroke.

In addition, it is necessary to explanation: passing through setting commutation body 612, hammering block 611, the through-hole of lower piston 62, shock surface and limit The angular relationship of plane may make impact force clockwise larger, impact force very little counterclockwise, even zero, in this way, being achieved that Hammering block 611 carries out unidirectional impact clockwise to lower piston 62.Under high pressure, the effect of continuous slurry fluid, impact performance For a kind of impact of high-frequency rotating.

Further, as shown in Figures 10 and 11, the present invention provides a kind of underground double acting accelerators, wherein changes Four equally distributed gas pressure relief slots 6121, axis of each gas pressure relief slot 6121 each along commutation body 612 are concavely provided with to the outer wall of body 612 To extension, and each gas pressure relief slot 6121 is upwardly extended respectively through the upper surface of commutation body 612, and each gas pressure relief slot 6121 prolongs separately down It stretches through the lower end surface of commutation body 612, can will carry out entering sectorial block 6111 in impact process by setting gas pressure relief slot 6121 High-pressure slurry discharge between side and the side inner wall of fan groove 6212, does not carry out impacting it in order to which sectorial block 6111 returns to Preceding position is ready for impact next time, and fan-shaped convex of radial section is formed between every two adjacent gas pressure relief slots 6121 Block, convex block include two the first convex blocks 6122 and two the second convex blocks 6124, it is understood that are two 6122 Hes of the first convex block Four gas pressure relief slots 6121 are separated out between two the second convex blocks 6124；

Two the first convex blocks 6122 are symmetrical along the axis centre of commutation body 612, recessed respectively on two the first convex blocks 6122 There is limiting slot 6123, two limiting slots 6123 are along the axially extending of commutation body 612, and two limiting slots 6123 are respectively along commutation The upper surface of body 612 extended axially upward and run through commutation body 612, two limiting slots 6123 are respectively along commutation body 612 The lower end surface of commutation body 612 is extended axially downward and does not run through, therefore when hammering block 611 is set in commutation 612 outside of body, by It is contacted in the inner wall of hammering block 611 with the inner wall fitting of commutation body 612, so that will not be from into the high-pressure slurry in limiting slot 6123 The lower end of limiting slot 6123 leaks out downwards, with guarantee high-pressure slurry can limiting slot 6123 internal drive hammering block 611 and commutation Body 612 produces relative rotation；In the state that hammering block 611 is sheathed on the outside of commutation body 612, limited block 6112 stretches to limit In slot 6123, along the radial direction of commutation body 612, the radial section product of limiting slot 6123 is greater than the radial section of limited block 6112 Product, in the state of producing relative rotation between hammering block 611 and commutation body 612, limited block 6112 can move in limiting slot 6123 It is dynamic；After sectorial block 6111 is moved to the other side of fan groove 6212 by the side of fan groove 6212, the upper section of lower piston 62 Conduction hole 6214 on 621 side walls is connected to the channel 6113 for being located at 6112 side of limited block on hammering block 611, in drainage trough 6213 High-pressure slurry sequentially pass through conduction hole 6214 and channel 6113 enter to limited block 6112 side and limiting slot 6123 one In gap between the inner wall of side, as the high-pressure slurry of entrance is more and more, under the action of high-pressure slurry, to limited block 6112 Apply thrust, makes to produce relative rotation between hammering block 611 and commutation body 612, it should be noted that due to high in fan groove 6212 Press mud to the pressure of sectorial block 6111, so that sectorial block 6111 is pushed against can not move in the other side of fan groove 6212, because This hammering block 611 can not also rotate, so the relative rotation between hammering block 611 and commutation body 612 is the rotation by the body 612 that commutates It realizes, the other side for rotating up to limited block 6112 of commutation body 612 is stopped after contacting with the other side inner wall of limiting slot 6123 Only, the channel 6113 at this time on hammering block 611 positioned at 6111 side of sectorial block is connected to the gas pressure relief slot 6121 in 612 outside of commutation body, The high-pressure slurry that sectorial block 6111 is pushed against in fan groove 6212 passes through channel 6113 and flows downward out from gas pressure relief slot 6121, and and this Meanwhile positioned at the channel 6113 of 6111 other side of sectorial block connection 6111 other side of sectorial block and 6212 other side inner wall of fan groove Between gap, thus channel 6113 enters 6111 other side of sectorial block and fan groove to the high-pressure slurry of the inside of hammering block 611 Between 6212 other side inner wall, as the high-pressure slurry of entrance is more and more, sectorial block 6111 is pushed to return to fan groove 6212 Side, and the side of sectorial block 6111 and the side inner wall of fan groove 6212 recline, and complete return stroke, and be ready for down Primary circumferential impact.

Two the second convex blocks 6124 are symmetrical along the axis centre of commutation body 612, open respectively on two the second convex blocks 6124 Equipped at least a pair of through-hole 6125 for extending radially through commutation body 612 along commutation body 612, and along in the second convex block 6124 The line at the center of the radial section of the heart and commutation body 612, two through-holes 6125 in each pair of through-hole 6125 symmetrically, are limiting Position block 6112 is resisted against in the state of the side of limiting slot 6123, is located at fan on one in each pair of through-hole 6125 and hammering block 611 A connection in the channel 6113 of the two sides of shape block 6111, and the other side of limiting slot 6123 is resisted against in limited block 6112 Under state, in each pair of through-hole 6125 another on hammering block 611 be located at sectorial block 6111 two sides channel 6113 in it is another One connection, i.e., 6111 side of connection sectorial block and fan groove 6,212 1 in impact process, in each pair of through-hole 6125 Gap between the inner wall of side, in return stroke, in each pair of through-hole 6125 another connection sectorial block 6111 the other side with Gap between the other side inner wall of fan groove 6212.

Further, as shown in figure 13, the present invention provides a kind of underground double acting accelerators, wherein lower core pipe 63 with It is equipped with spline 41 between lower case 4, spline 41 includes key teeth 411 on multiple outer walls that lower core pipe 63 is arranged in and multiple sets The keyway 412 on the inner wall of lower case 4 is set, key teeth 411 is arranged in a one-to-one correspondence with keyway 412, along the radial direction of lower case 4, The radial section product of keyway 412 is greater than the radial section product of key teeth 411, the two sides of each key teeth 411 and the two of corresponding keyway 412 Gap is all had between side wall, in the state that core pipe 63 rotates under the drive of lower piston 62, key teeth 411 can be in corresponding keyway It is moved in 412.By the way that gap is arranged between setting flower and between the two sides of key teeth 411 and the two sidewalls of keyway 412, for lower core pipe 63 rotation provides space, avoids the occurrence of the rotation of lower core pipe 63 and is weakened by the blocking of lower case 4 and even is eliminated and shadow The case where ringing circumferential direction percussion.

Wherein, it in sealing contact between above-mentioned each component and is tightly connected, as preferably by sealing ring realization, or Person those skilled in the art can also realize above-mentioned sealing using other structures or mode, and the present invention is not limited thereto.

Double acting accelerator in underground provided by the invention includes impact process and return stroke when in use:

Please sequentially referring to Figure 14 A, Figure 14 B, Figure 14 C, Figure 14 D, Figure 14 E, Figure 14 F, Figure 15 A, Figure 15 B, Figure 15 C, figure 15D, Figure 15 E and Figure 15 F are now illustrated the movement of each component in impact process and return stroke, the table mentioned in the following figure " left side " for showing direction is the left side when component turns to the top, and " right side " is the right side when component turns to the top:

It is contacted on the left of sectorial block 6111A with the inner left wall of fan groove 6212A, the channel in the left side of limited block 6112A 6113 on the right side of fan groove 6212A conduction hole 6214 and drainage trough 6213 be connected to, the high-pressure slurry in drainage trough 6213 along Channel 6113 on the left of conduction hole 6214, limited block 6112A enters to the left side of limited block 6112A and corresponding limiting slot 6123 Inner left wall between, high-pressure slurry pressure effect under, commutation body 612 rotate counterclockwise until limited block 6112A the right side Side reclines with the right side inner wall of corresponding limiting slot 6123, and commutation body 612 stops operating, at this point, the first convex block 6122A upper left side Through-hole 6125, on the left of the channel 6113 on the left of sectorial block 6111A and sectorial block 6111A and in the left side of fan groove 6212A Gap between wall is connected to, and filtering of the high-pressure slurry through filter hole 6133 in filter cylinder 613 sequentially passes through on the first convex block 6122A The through-hole 6125 in left side and the channel 6113 on the left of sectorial block 6111A enter on the left of sectorial block 6111A with fan groove 6212A's Between inner left wall, as gradually increasing for high-pressure slurry pushes sectorial block 6111A court under the pressure effect of high-pressure slurry (i.e. hammering block 611 rotates clockwise) is moved to the right side of fan groove 6212A, due to right side and the corresponding limit of limited block 6112A The right side inner wall of position slot 6123 abuts each other, during sectorial block 6111A is moved towards the right side of fan groove 6212A, Hammering block 611 and commutation body 612 rotate synchronously, and keep opposing stationary, until being resisted against fan groove on the right side of sectorial block 6111A On the right side inner wall of 6212A；After being resisted against on the right side inner wall of fan groove 6212A on the right side of sectorial block 6111A, with limit An aerial drainage on 62 inner wall of channel 6113 and lower piston on the left of the corresponding limiting slot 6123 of block 6112A, limited block 6112A Slot 6211 is connected to, and the high-pressure slurry in limiting slot 6123 corresponding with limited block 6112A passes through the channel on the left of limited block 6112A It is flowed out in the corresponding dredging flow groove 6211 of 6113 inflows, at the same time, conduction hole 6214 and drainage on the left of fan groove 6212A Between the right side in channel 6113 and limited block 6112B on the right side of slot 6213, limited block 6112B and corresponding limiting slot 6123 Gap connection, high-pressure slurry in drainage trough 6213 by conduction hole 6214 enter the right side of limited block 6112B with it is corresponding Between limiting slot 6123, under the pressure effect of high-pressure slurry, commutation body 612 rotates clockwise the left side until limited block 6112B Side reclines with the inner left wall of corresponding limiting slot 6123, and commutation body 612 stops operating, at this point, it is left to be located at the first convex block 6122A The left side in channel 6113 and sectorial block 6111A on the left of the gas pressure relief slot 6121 of side, sectorial block 6111A and fan groove 6212A's Gap between inner left wall is connected to, in the gap between the left side of sectorial block 6111A and the inner left wall of fan groove 6212A High-pressure slurry is flowed downward out from gas pressure relief slot 6121, and simultaneously, the through-hole 6125 on right side, fan on the first convex block 6122A Between between the right side in channel 6113 and sectorial block 6111A and the right side inner wall of fan groove 6212A on the right side of shape block 6111A Gap connection, starts return stroke.Those of ordinary skill in the art are it will be appreciated that return stroke is equivalent to the mistake of reverse impact Journey is only reversely to complete the motion process of above-mentioned each component once, i.e., impact process is 6111 clockwise movement of sectorial block Process, and return stroke is the process of 6111 counterclockwise movement of sectorial block, then this is repeated no more.Under the action of mud pressure, 611 energy high-frequency rotating of hammering block impacts lower piston 62, and impact is passed to lower core pipe 63, thus with carrying out high frequency circumferential impact drill Head.Meanwhile the spline of lower core pipe 63 and lower case 4 has enough gaps, in case the percussion of hammering block 611 is by lower case 4 Limitation.In this way, drill bit is in rotary cutting broken rock, while the rock drilling power by a circumferential impact type, keep efficiency of breaking rock higher.

The present invention forms the thrust of an axial direction and the impact force of circumferential direction by the pressure using slurry fluid, acts on On the drill bit of lower part, to apply the circumferential boring by percussion power of a stable bit pressure and a high frequency to drill bit, mention drill bit High efficiency of breaking rock improves rate of penetration.

Compared with prior art, advantages of the present invention is as follows:

Upper core pipe and upper piston form a stable thrust in the present invention, apply bit pressure to drill bit；Lower core pipe and lower work Plug forms a circumferential impact, provides the instantaneous rock drilling power of a high frequency to drill bit.On the one hand, thrust provided by the present invention is One relatively flexible stable thrust pushes drill bit constantly to creep into, avoid it is mechanical to drill bit, rigidly pressurize, due to boring The unstable of pressure damages caused by drill bit；On the other hand, the present invention be under the premise of can transmit top rod driving torque, The circumferential high-frequency percussion that a part can also be formed makes the cutting broken rock principle of PDC drill bit become the continuous rock drilling principle of high frequency, To improve efficiency of breaking rock, while Cutter also being protected not accumulated excessive torque and burst apart.Two above function is same When act on drill bit, so that well drilling and rock crushing efficiency is greatly promoted, so achieve the purpose that improve rate of penetration.

The present invention by be arranged axial structure of voltage regulation can the axial compressive force that is subject to of steady drill bit, apply for drill bit axial steady Fixed thrust, while by the way that circumferential impact structure is arranged, circumferential impact force can be provided for drill bit, improve bit speed.

The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any Those skilled in the art, under the premise of not departing from design and the principle of the present invention made equivalent variations with repair Change, should belong to the scope of protection of the invention.

Claims (13)

1. a kind of underground double acting accelerator, which is characterized in that the underground double acting accelerator includes: sequentially spiral shell from top to bottom Top connection, upper housing, middle shell and the lower case of line connection and internal run-through, the upper housing inside are equipped with axial pressure stabilizing knot Structure, the axial structure of voltage regulation lower end extend to the inside of the middle shell, the inside of the middle shell is equipped with circumferential impact knot Structure, the mutual contact in lower end of the upper end of the circumferential direction impact structure and the axial structure of voltage regulation, the circumferential direction impact structure Lower end runs through the lower case and extend out to the outside of the lower case.

2. double acting accelerator in underground according to claim 1, which is characterized in that the axial direction structure of voltage regulation includes upper work Plug and upper core pipe, the upper piston and the upper core pipe are inner hollow shape, and the upper piston is slidably arranged in the upper casing The inside of body, and the inner wall palette of the outer wall of the upper piston and the upper housing, the upper end of the upper core pipe stretch to The inside of the upper piston is simultaneously threadedly coupled with the upper piston, and the lower end of the upper core pipe is stretched to described by the upper housing The inside of middle shell；Along the radial direction of the upper housing, towards the direction of diameter diminution on the inner wall of the lower end of the upper housing Form annular convex platform, the outer wall of the upper core pipe and the inner wall palette of the annular convex platform, the lower end surface of the piston, institute The inner wall, the outer wall of the upper core pipe and the upper surface of the annular convex platform for stating upper housing are enclosed the first ring cavity, described Pressure stable hole is offered on the side wall of upper housing, the pressure stable hole is connected to the outside of first ring cavity and the upper housing.

3. double acting accelerator in underground according to claim 2, which is characterized in that the circumferential direction impact structure includes rotation Impact assembly, lower piston and lower core pipe, the rotation impact assembly and the lower piston are respectively positioned on the inside of the middle shell, institute The outer wall of lower piston and the inner wall palette of the middle shell are stated, the lower end of the rotation impact assembly stretches to the lower work The inside of the upper end of plug, and the upper end of the rotation impact assembly and the upper mutual contact of core pipe, the rotation impact assembly Upper surface, the inner wall of the middle shell, the lower end surface of the upper housing and the outer wall of the upper core pipe be enclosed the second ring The upper end of chamber, the lower core pipe is connect in the inside of the middle shell with the lower thread of the lower piston, the lower core pipe Lower end extend out to the outside of the lower case after the lower case.

4. double acting accelerator in underground according to claim 3, which is characterized in that the lower piston is in up and down Blank pipe shape, the lower piston from top to bottom include integrally formed upper section, middle section and lower section, and the rotation impact assembly is set to institute The upper intersegmental part of lower piston is stated, the upper end of the lower core pipe is connect with the lower thread of the lower piston；

Two dredging flow grooves are symmetrically recessed on the inner wall of the upper section of the lower piston, and right on the inner wall of the upper section of the lower piston Recessed there are two the fan grooves that radial section is referred to as sector, and along the radial direction of the lower piston, the center of two fan grooves Line it is vertical with the line at center of two dredging flow grooves；Correspond to each sector on the outer wall of the upper section of the lower piston A drainage trough, each dredging flow groove, each sector are respectively recessed at position between slot and adjacent two dredging flow grooves Slot and each drainage trough offered along the axially extending of the lower piston, each drainage trough at least one along The conduction hole of the side wall for extending radially through the lower piston of the lower piston；

The internal diameter in the middle section of the lower piston is less than the internal diameter of the upper section of the lower piston, and the inner wall in the middle section of the lower piston is convex For the inner wall of the upper section of the lower piston, along the radial direction of the lower piston, the inner wall of the lower end in the middle section of the lower piston On towards diameter reduce direction formed positive stop lug boss；

The internal diameter of the lower section of the lower piston is greater than the internal diameter in the middle section of the lower piston, and the internal diameter of the lower section of the lower piston Less than the internal diameter of the upper section of the lower piston.

5. double acting accelerator in underground according to claim 4, which is characterized in that the rotation impact assembly includes anvil Son, commutation body, filter cylinder and gland；

The filter cylinder includes integrally formed upper section and lower section, and the upper section of the filter cylinder is located at the interior of the upper section of the lower piston Portion is uniformly provided with multiple filter openings, the lower section of the filter cylinder along the radial direction of the filter cylinder on the side wall of the upper section of the filter cylinder It is resisted against on the positive stop lug boss positioned at the bottom of the inside in the middle section of the lower piston, and the filter cylinder, under the filter cylinder The outer diameter of section is greater than the outer diameter of the upper section of the filter cylinder, and the outer wall of the lower section of the filter cylinder protrudes from the outer of the upper section of the filter cylinder Wall, the junction of the upper surface of the lower section of the filter cylinder and the outer wall of the lower section of the filter cylinder form leading for from top to bottom flaring shape Inclined-plane, in the state that the bottom of the filter cylinder is resisted against on the positive stop lug boss, the upper surface of the lower section of the filter cylinder and institute The upper surface for stating the middle section of lower piston is concordant；

The commutation body is sheathed on the outside of the upper section of the filter cylinder, and the lower end of the commutation body is resisted against under the filter cylinder On the upper surface of section, the hammering block is set in the outside of the commutation body, and the lower piston is set in the outside of the hammering block, The lower end of the hammering block is resisted against on the upper surface in the middle section of the lower piston, and the inner wall of the lower piston is outer with the hammering block Wall fitting contact, and the inner wall of the hammering block with it is described commutation body outer wall fitting contact, it is described commutate body inner wall with it is described The outer wall of filter cylinder is bonded contact, and the upper surface of the upper surface of the lower piston, the upper surface of the hammering block and the commutation body is flat Together, the gland is set in the outside of the filter cylinder and contacts with the fitting of the outer wall of the filter cylinder, and gland compressing is in institute It is the inner wall of the middle shell, described on the upper surface for stating the upper surface of lower piston, the upper surface of the hammering block and the commutation body The upper surface of the lower end surface of upper housing, the outer wall of the upper core pipe and the gland is enclosed the second ring cavity, the upper core pipe Inside be connected respectively with the inside of the filter cylinder, second ring cavity.

6. double acting accelerator in underground according to claim 5, which is characterized in that offered on the gland with it is each described The flowing hole that drainage trough is connected.

7. double acting accelerator in underground according to claim 5 or 6, which is characterized in that the lower end of the upper section of the filter cylinder Inner wall on be convexly equipped with stop collar, and the inside of the upper section of the filter cylinder was equipped with flow nozzle, cross the lower end surface of flow nozzle against On the upper surface of stop collar, the tubular structure of flow nozzle excessively for inner hollow and up and down, the flow nozzle excessively Internal diameter is less than the internal diameter of the upper section of the filter cylinder, and the inner wall of the outer wall and the upper section of the filter cylinder for crossing flow nozzle closely pastes Close setting.

8. double acting accelerator in underground according to claim 5 or 6, which is characterized in that the upper section of the lower piston it is interior The junction of the inner wall in the middle section of wall and the lower piston is formed with the aerial drainage guide surface being from top to bottom in gradually-reducing shape, the aerial drainage Guide surface, the lower end surface of the hammering block, the lower end surface of the commutation body and the guiding incline are enclosed aerial drainage ring cavity, described to let out Flow the side wall that the distance between the top edge of guide surface and the inner wall of upper section of the lower piston are less than the upper section of the piston Thickness, the aerial drainage ring cavity are connected to the dredging flow groove.

9. double acting accelerator in underground according to claim 8, which is characterized in that offer multiple hang down on the guiding incline Directly run through the discharge orifice of the guiding incline, the discharge orifice is connected to the inside of the lower section of the aerial drainage ring cavity and the filter cylinder.

10. double acting accelerator in underground according to claim 9, which is characterized in that opened up on the side wall of the lower piston There is at least one circulation port, each circulation port is connected to one and the aerial drainage ring cavity in a plurality of drainage trough.

11. double acting accelerator in underground according to claim 8, which is characterized in that symmetrical on the outer wall of the hammering block There are two sectorial blocks for projection, in the state that the lower piston is sheathed on the outside of the hammering block, two sectorial block difference It is inserted into two fan grooves, the radial section product of the fan groove is greater than the radial section product of the sectorial block, described In the state of producing relative rotation between lower piston and the hammering block, the sectorial block can move in the fan groove；

There are two limited blocks for symmetrical projection on the inner wall of the hammering block, and two sectorial blocks and two limited blocks are each along institute The axis for stating hammering block extends, and along the radial direction of the hammering block, the line of centres of two limited blocks is perpendicular to two sectors The line of centres of block；

It is close to the two sides of each sectorial block, and is close to the two sides of each limited block, is opened up respectively on the side wall of the hammering block There is the channel of the side wall through the hammering block, the channel positioned at each limited block two sides can be in the hammering block and the lower piston Between produce relative rotation to predetermined position in the state of be connected to the dredging flow groove.

12. double acting accelerator in underground according to claim 11, which is characterized in that recessed on the outer wall of the commutation body There are four equally distributed gas pressure relief slots, each gas pressure relief slot is axially extending each along the commutation body, and each gas pressure relief slot It is upwardly extended respectively through the upper surface of the commutation body, each gas pressure relief slot is extended through separately down under the commutation body End face, forms the fan-shaped convex block of radial section between the every two adjacent gas pressure relief slots, and the convex block includes two first Convex block and two the second convex blocks；

Two first convex blocks are symmetrical along the axis centre of the commutation body, distinguish on two first convex blocks recessed limited Position slot, two limiting slots are along the axially extending of the commutation body, and two limiting slots are respectively along the commutation body Extend axially upward and through it is described commutation body upper surface, two limiting slots respectively along it is described commutation body axial direction The lower end surface for extending downwardly and not running through the commutation body is sheathed on the state in the outside of the commutation body in the hammering block Under, the limited block stretches in the limiting slot, and along the radial direction of the commutation body, the radial section product of the limiting slot is big It is described in the state of producing relative rotation between the hammering block and the commutation body in the radial section product of the limited block Limited block can move in the limiting slot；

Two second convex blocks are symmetrical along the axis centre of the commutation body, offer respectively on two second convex blocks At least a pair of through-hole for extending radially through the commutation body along the commutation body, and along the center of second convex block and institute The line at the center of the radial section of commutation body is stated, two through-holes in each pair of through-hole are symmetrical, in the limit Position block is resisted against in the state of the side of the limiting slot, is located at the fan on one in each pair of through-hole and the hammering block A connection in the channel of the two sides of shape block, and in the state that the limited block is resisted against the other side of the limiting slot, Another in each pair of through-hole is connected to another in the channel for the two sides for being located at the sectorial block on the hammering block.

13. double acting accelerator in underground according to claim 3, which is characterized in that the lower core pipe and the lower case Between be equipped with spline, the spline includes key teeth on multiple outer walls that the lower core pipe is arranged in and multiple is arranged described Keyway on the inner wall of lower case, the key teeth are arranged in a one-to-one correspondence with the keyway, described along the radial direction of the lower case The radial section product of keyway is greater than the radial section product of the key teeth, the two sides of each key teeth and the two of the corresponding keyway Gap is all had between side wall, in the state that the lower piston drives lower core pipe rotation, the key teeth can be corresponding It is moved in the keyway.