CN106401461A - High-frequency double-acting hydraulic impact device - Google Patents
High-frequency double-acting hydraulic impact device Download PDFInfo
- Publication number
- CN106401461A CN106401461A CN201610925355.0A CN201610925355A CN106401461A CN 106401461 A CN106401461 A CN 106401461A CN 201610925355 A CN201610925355 A CN 201610925355A CN 106401461 A CN106401461 A CN 106401461A
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- China
- Prior art keywords
- impact
- piston
- outer tube
- valve seat
- double acting
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
Abstract
The invention discloses a high-frequency double-acting hydraulic impact device. The device comprises an outer pipe; a reversing valve assembly and a piston capable of reciprocating in the axial direction of the outer pipe are sequentially arranged in the outer pipe in the axial direction; a high-pressure liquid channel is arranged between the reversing valve assembly and the inner wall of the outer pipe; a first impact cavity for accommodating a liquid for impacting the piston to advance is arranged in the reversing valve assembly; a second impact cavity for accommodating a liquid for impacting the piston to reset is formed between the piston and the inner wall of the outer pipe and communicates with the high-pressure liquid channel; liquid draining channels for draining the impact liquids are arranged on the reversing valve assembly and the piston; and the reversing valve assembly is used for controlling the first impact cavity to be connected with and disconnected from the high-pressure liquid channel and the liquid draining channels. The reversing valve assembly can be switched quickly between the high pressure and the low pressure, the impact frequency and the impact energy are optimized, and the drilling efficiency is improved.
Description
Technical field
The present invention relates to down-hole hard rock creeps into field at a high speed, particularly to a kind of high frequency double acting hydraulical impact device.
Background technology
Down-hole hard-rock boring typically adopts matrix drill bits or diamond bit to construct in the way of rotary drilling at present, exists
Drilling efficiency is low, serious to drill tool wear the shortcomings of.Comparatively speaking, Pneumatic immpacting rotary drilling improves drilling efficiency, but
Pneumatic immpacting rotary drilling can produce serious dust pollution.Not only drilling efficiency is high for hydraulical impact drilling, and will not produce
Dust pollution.But Hydro-efflux Hammer frequency of impact of the prior art and ballistic work are preferable not enough, have impact in hard-rock boring
Drilling efficiency.
Therefore, it is necessary to improve to existing hydraulical impact drilling tool, optimize its frequency of impact and ballistic work, improve it
Drilling efficiency.
Content of the invention
In view of this, it is an object of the invention to provide a kind of high frequency double acting hydraulical impact device and its drilling tool, impact
Frequency and ballistic work are high, and its drilling efficiency is fast.
The high frequency double acting hydraulical impact device of the present invention, including outer tube, is disposed with reversal valve vertically in outer tube
Assembly and can be along the piston of outer tube axially reciprocating；
It is disposed with high pressure liquid stream passage between described reversing valve assembly and outer tube wall, be provided with described reversing valve assembly
For accommodating the first impact chamber of the liquor stream of impact piston advance, formed between described piston and outer tube wall for accommodating impact
Second impact chamber of the liquor stream of piston reset, described second impact chamber and high pressure liquid stream channel connection, described reversing valve assembly and
Apocenosis passage for discharging impact liquor stream is provided with piston, described reversing valve assembly be used for controlling described first impact chamber with
The connection of high pressure liquid stream passage and apocenosis passage and disconnection.
Further, described reversing valve assembly includes the valve seat being arranged in outer tube, the valve element being arranged in valve seat and is used for
Drive valve element along the valve element drive component of outer tube axially reciprocating.
Further, be provided between described valve element and valve seat high-pressure channel with described high pressure liquid stream channel connection and with institute
State the first impact passage of the first impact chamber connection, moved back and forth by valve element opposite valve seat and control high-pressure channel and the first impact
The connection of passage or disconnection.
Further, described valve element is additionally provided with the current by pass connecting with described apocenosis passage, by valve element relative to valve
Seat moves back and forth the connection that can also control described first impact passage and current by pass or disconnection.
Further, described valve element drive component includes being arranged in valve seat for accommodating the of the liquor stream of impact valve core reset
Three impact chambeies, are provided with, on described piston and on the 3rd impact chamber, the signalling channel cooperating, when piston movement stops to advancing
During point, signalling channel and described high pressure liquid stream channel connection are passed through in the 3rd impact chamber.
Further, described valve seat includes main valve seat and is arranged at inner seat within main valve seat, main valve seat and inner seat it
Between form described first impact chamber, described 3rd impact chamber is arranged in main valve seat, main valve seat outer wall and described outer tube wall it
Between form described high pressure liquid stream passage.
Further, be additionally provided with piston bushing between described piston and described outer tube, described piston bushing and main valve seat it
Between be provided with inner tube, formed between said inner tube inwall and piston outer wall described second impact chamber.
Further, described high frequency double acting hydraulical impact device also includes being connected by reversing valve assembly one end with described outer tube
Tool joint and the drill bit being connected by piston end with outer tube, described tool joint be used for jointed rod to described high frequency double acting
Hydraulical impact device provides high pressure liquid stream, and described high frequency double acting hydraulical impact device is used for driving drill bit axially to bore along drilling rod
Enter.
Further, it is provided with the defecator for being filtered to high pressure liquid stream in described top connection.
Further, the outer wall of described outer tube is provided with the spiral grooves for assisting deslagging.
Beneficial effects of the present invention：The high frequency double acting hydraulical impact device of the present invention, reversing valve assembly can be in high-low pressure
Between be switched fast, optimize frequency of impact and ballistic work, improve drilling efficiency.
Brief description
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Figure 1A-A to cutaway view Amplified image；
Fig. 3 is Figure 1B-B to cutaway view Amplified image；
Fig. 4 is Fig. 1 C-C to cutaway view Amplified image；
Fig. 5 is for valve core movement at D in Fig. 1 to partial enlarged drawing during advance stop；
Fig. 6 is for valve core movement at D in Fig. 1 to partial enlarged drawing during reset stop；
Fig. 7 is the partial enlarged drawing at E in Fig. 1；
Fig. 8 is for piston movement at F in Fig. 1 to partial enlarged drawing during advance stop；
Fig. 9 is for piston movement at F in Fig. 1 to partial enlarged drawing during reset stop.
Specific embodiment
Fig. 1 is the structural representation of the present invention, and for Figure 1A-A to cutaway view Amplified image, Fig. 3 is that Figure 1B-B amplifies to section view to Fig. 2
Figure, for Fig. 1 C-C to cutaway view Amplified image, Fig. 5 is valve core movement at D in Fig. 1 to partial enlarged drawing during advance stop, Fig. 6 to Fig. 4
For valve core movement at D in Fig. 1 to partial enlarged drawing during reset stop, Fig. 7 is the partial enlarged drawing at E in Fig. 1, and Fig. 8 is Fig. 1
At middle F, to partial enlarged drawing during advance stop, Fig. 9 is for piston movement at F in Fig. 1 to local during reset stop for piston movement
Enlarged drawing, as shown in the figure：The high frequency double acting hydraulical impact device of the present invention, including outer tube 11, in outer tube 11 vertically successively
It is provided with reversing valve assembly and can be along the piston 9 of outer tube axially reciprocating；
It is disposed with high pressure liquid stream passage 15, setting in described reversing valve assembly between described reversing valve assembly and outer tube wall
There is the first impact chamber 22 of the liquor stream for accommodating impact piston advance, formed for accommodating between described piston and outer tube wall
Second impact chamber 23 of the liquor stream that impact piston resets, described second impact chamber 23 is connected with high pressure liquid stream passage 15, described changes
Apocenosis passage 18 for discharging impact liquor stream is provided with valve module and piston, described reversing valve assembly is used for controlling described
The connection of the first impact chamber 22 and high pressure liquid stream passage 15 and apocenosis passage 18 and disconnection.Reversing valve assembly can adopt slide-valve,
Ball shape rotary valve may also be employed, can also other can control the first impact chamber 22 and high pressure liquid stream passage using in prior art
15 and apocenosis passage 18 connection and disconnect reversing valve assembly, all enable the purpose of the present invention；
When the first impact chamber 22 is connected with high pressure liquid stream passage 15 and disconnected with apocenosis passage 18, in the first impact chamber 22
Lifting surface area be more than second impact chamber 23 in lifting surface area, high pressure liquid stream impact piston advance；When first impacts chamber 22
When disconnecting with high pressure liquid stream passage 15 and connecting with apocenosis passage 18, the liquor stream in the first impact chamber is discharged from apocenosis passage, because
And in the first impact chamber, it is changed into low pressure, the high pressure liquid stream impact piston in the second impact chamber 23 resets.
In the present embodiment, described reversing valve assembly includes the valve seat being arranged in outer tube, valve element 5 and being arranged in valve seat
For driving valve element 5 along the valve element drive component of outer tube 11 axially reciprocating, described valve element drive component can be driven using spring
Dynamic, hydraulic-driven may also be employed, other other drive components of the prior art can also be adopted, all enable the mesh of the present invention
, valve element 5 can be made using tungsten-carbide powder is metallurgy sintered, and intensity is high, and wearability is good, the service life of elongated component；Logical
Cross valve element slip liquor stream is switched over, switch speed is fast, be conducive to improving the frequency of impact of Hydro-efflux Hammer, and structure is simple,
It is easily achieved.
In the present embodiment, between described valve element 5 and valve seat, it is provided with the high-pressure channel with described high pressure liquid stream channel connection
24 and with described first impact chamber connect first impact passage 25, by valve element opposite valve seat move back and forth control high-pressure channel
24 and first connection and the disconnections impacting passage 25；
Can in the middle part of described valve element 5 outer wall footpath inwardly sink formed scrobicular ring, described valve seat is provided with for coordinating with scrobicular ring
Bulge loop, bulge loop along described outer tube axial direction both sides be respectively arranged with the high-pressure channel 24 connecting with described high pressure liquid stream passage 15 and
The the first impact passage 25 connecting with the described first impact chamber 22, described valve element is additionally provided with current by pass 26；As Fig. 5 institute
Show, when valve element 5 moves to advance stop (i.e. the right stop of in figure), high pressure liquid stream crosses valve element scrobicular ring and the from high-pressure channel 24
One impact passage 25 enters the first impact chamber 22 impact piston 9 and advances；As shown in fig. 6, when valve element 5 moves to reset stop (i.e.
The left stop of in figure) when, the first impact passage 25 connects with current by pass 26 that (the first impact passage 25 is disconnected with high-pressure channel 24 simultaneously
Open), the high pressure liquid stream in the first impact chamber 22 enters apocenosis passage 18 through current by pass 26 and makes the first impact chamber 22 moment
It is changed into low pressure, the high pressure liquid stream impact piston in the second impact chamber 23 resets；Also bulge loop can be set on valve element, on valve seat
Setting scrobicular ring；This structure switch speed is fast, and can guarantee that the sealing in high pressure liquid stream passage and the first impact chamber after switching, structure
Simply, it is easy to accomplish.
In the present embodiment, described valve element drive component includes being arranged in valve seat for accommodating the liquor stream of impact valve core reset
The 3rd impact chamber 17, described piston 9 is provided with signalling channel 27, the 3rd impact chamber is provided with and coordinates with signalling channel 27
Signalling channel 28；As shown in figure 8, the 3rd impact chamber 17 leads to when piston 9 moves to advance stop (i.e. the right stop of in figure)
Cross signalling channel to connect with described high pressure liquid stream passage 15, the high pressure liquid stream in high pressure liquid stream passage is from signalling channel 27 and signal
Passage 28 enters the 3rd impact chamber 17 impact valve element 5 and resets；Valve element advance forward drive relies on high pressure liquid stream to pass through high-pressure channel
24 direct drive valve elements advance；Liquor stream is controlled by signalling channel, just when piston movement is to advance stop immediately by valve element
Reset, when piston does not move to advance stop, the 3rd impact chamber is disconnected with high pressure liquid stream, and this structure can improve switching speed
Degree, improves the reset speed of Hydro-efflux Hammer further, improves work efficiency, optimizes frequency of impact and ballistic work.
In the present embodiment, described valve seat includes main valve seat 7 and is arranged at inner seat 6 within main valve seat, main valve seat 7 and interior
Formed between valve seat 6 described first impact chamber 22, described 3rd impact chamber is arranged in main valve seat 7, main valve seat outer wall with described
Form described high pressure liquid stream passage 15 between outer tube wall, main valve seat is additionally provided with the 3rd punching being connected with the 3rd impact chamber 18
Hit passage 29, in the 3rd impact chamber, 18 high pressure liquid stream is between the 3rd impact passage 29 flows through between main valve seat and inner seat
Gap impact valve element 5 resets；Processing and manufacturing, easy for installation.
In the present embodiment, between described piston 9 and described outer tube 11, it is additionally provided with piston bushing 10, described piston bushing 10
It is provided with inner tube 8 and main valve seat 7 between, between said inner tube inwall and piston outer wall, form described second impact chamber 23；Piston
Bushing can ensure that the sealing in the second impact chamber 23, piston bushing and inner tube scalable second impact the volume in chamber.
In the present embodiment, described high frequency double acting hydraulical impact device also includes leaning on reversing valve assembly one end with described outer tube
The tool joint 1 connecting and the drill bit 14 being connected by piston end with outer tube, described tool joint is used for jointed rod to described height
Frequency double acting hydraulical impact device provides high pressure liquid stream, and described high frequency double acting hydraulical impact device is used for driving drill bit along drilling rod
Axial drilling, is provided with guide seat 3 between tool joint 1 and valve seat, be connected by spline housing 13 between drill bit 14 and outer tube 11,
The snap ring 12 spacing to drill bit is additionally provided with outer tube wall；Realize the brill to down-hole hard rock by tool joint 1 and drill bit 14
Enter.
In the present embodiment, in described top connection 1, it is provided with the defecator 2 for being filtered to high pressure liquid stream, such as Fig. 2
Shown, defecator 2 includes drainage screen support tube 20, and drainage screen support tube 20 is provided with filtration through hole 21, may also be employed existing
There are other defecators in technology；Liquor stream can be effectively prevented coarse particulate matter therein after defecator and enter commutation
Valve module scratches valve element, thus improving the functional reliability of drilling tool.
In the present embodiment, the outer wall of described outer tube 11 is provided with the spiral grooves 19 for assisting deslagging；Can the row of auxiliary
Slag, improves drilling efficiency.
In above example, direction of advance refers to point to the direction of drill bit axially away from reversing valve assembly along outer tube, resets
Direction refers to the direction contrary with direction of advance.
Finally illustrate, above example only in order to technical scheme to be described and unrestricted, although with reference to relatively
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, the objective without deviating from technical solution of the present invention and scope, and it all should be covered at this
In the middle of the right of invention.
Claims (10)
1. a kind of high frequency double acting hydraulical impact device it is characterised in that：Including outer tube, it is disposed with vertically in outer tube and changes
To valve module and can be along the piston of outer tube axially reciprocating；
Be disposed with high pressure liquid stream passage between described reversing valve assembly and outer tube wall, be provided with described reversing valve assembly for
Accommodate the first impact chamber of the liquor stream that impact piston advances, formed for accommodating impact piston between described piston and outer tube wall
Second impact chamber of the liquor stream resetting, described second impact chamber and high pressure liquid stream channel connection, described reversing valve assembly and piston
On be provided with apocenosis passage for discharging impact liquor stream, described reversing valve assembly is used for controlling described first impact chamber and high pressure
The connection of fluid course and apocenosis passage and disconnection.
2. high frequency double acting hydraulical impact device according to claim 1 it is characterised in that：Described reversing valve assembly includes
The valve seat being arranged in described outer tube, the valve element being arranged in valve seat and for driving valve element along the valve of outer tube axially reciprocating
Core drive component.
3. high frequency double acting hydraulical impact device according to claim 2 it is characterised in that：Between described valve element and valve seat
It is provided with the high-pressure channel with described high pressure liquid stream channel connection and the first impact passage connecting with the described first impact chamber, lead to
Cross valve element opposite valve seat and move back and forth the connection controlling high-pressure channel and the first impact passage or disconnection.
4. high frequency double acting hydraulical impact device according to claim 3 it is characterised in that：It is additionally provided with described valve element
The current by pass being connected with described apocenosis passage, is moved back and forth by the relatively described valve seat of valve element and can also control described first punching
Hit connection or the disconnection of passage and current by pass.
5. high frequency double acting hydraulical impact device according to claim 4 it is characterised in that：Described valve element drive component bag
Include and be arranged at for accommodating the 3rd impact chamber of the liquor stream of impact valve core reset in described valve seat, on described piston and the 3rd impact
The signalling channel cooperating is provided with chamber, signalling channel and institute are passed through in the 3rd impact chamber when piston movement is to advance stop
State high pressure liquid stream channel connection.
6. high frequency double acting hydraulical impact device according to claim 5 it is characterised in that：Described valve seat includes main valve seat
With the inner seat being arranged within main valve seat, between main valve seat and inner seat, form described first impact chamber, described 3rd impact
Chamber is arranged in main valve seat, forms described high pressure liquid stream passage between main valve seat outer wall and described outer tube wall.
7. high frequency double acting hydraulical impact device according to claim 5 it is characterised in that：Described piston and described outer tube
Between be additionally provided with piston bushing, be provided with inner tube between described piston bushing and main valve seat, outside said inner tube inwall and piston
Form described second impact chamber between wall.
8. the high frequency double acting hydraulical impact device according to claim 1-7 any claim it is characterised in that：Described
High frequency double acting hydraulical impact device also includes tool joint and and the outer tube being connected by reversing valve assembly one end with described outer tube
The drill bit connecting by piston end, described tool joint is used for jointed rod provides height to described high frequency double acting hydraulical impact device
Hydraulic fluid stream, described high frequency double acting hydraulical impact device is used for driving drill bit along drilling rod axial drilling.
9. high frequency double acting hydraulical impact device according to claim 8 it is characterised in that：It is provided with described top connection
For the defecator that high pressure liquid stream is filtered.
10. high frequency double acting hydraulical impact device according to claim 9 it is characterised in that：On the outer wall of described outer tube
It is provided with the spiral grooves for assisting deslagging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610925355.0A CN106401461B (en) | 2016-10-24 | 2016-10-24 | High frequency double acting hydraulical impact device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610925355.0A CN106401461B (en) | 2016-10-24 | 2016-10-24 | High frequency double acting hydraulical impact device |
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| CN106401461A true CN106401461A (en) | 2017-02-15 |
| CN106401461B CN106401461B (en) | 2019-02-26 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917582A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of axial double acting hydraulic impacting device |
| CN108661578A (en) * | 2018-05-18 | 2018-10-16 | 中煤科工集团重庆研究院有限公司 | Composite hydraulic power head |
| CN111577177A (en) * | 2020-04-22 | 2020-08-25 | 中煤科工集团西安研究院有限公司 | Drilling device and drilling method for discharging slag by underground pneumatic impact crushed rock foam |
| CN111877978A (en) * | 2020-07-23 | 2020-11-03 | 重庆大学 | Hydraulic impactor |
| CN113006680A (en) * | 2021-03-19 | 2021-06-22 | 成都欧维恩博石油科技有限公司 | Low-pressure-loss torsion impact drilling tool and rock breaking method |
| CN113585960A (en) * | 2021-08-05 | 2021-11-02 | 重庆大学 | Centre rotary valve type hydraulic impactor |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917582A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of axial double acting hydraulic impacting device |
| CN106917582B (en) * | 2017-05-09 | 2023-06-23 | 长江大学 | Axial double-acting hydraulic impactor |
| CN108661578A (en) * | 2018-05-18 | 2018-10-16 | 中煤科工集团重庆研究院有限公司 | Composite hydraulic power head |
| CN111577177A (en) * | 2020-04-22 | 2020-08-25 | 中煤科工集团西安研究院有限公司 | Drilling device and drilling method for discharging slag by underground pneumatic impact crushed rock foam |
| CN111577177B (en) * | 2020-04-22 | 2022-03-22 | 中煤科工集团西安研究院有限公司 | Drilling device and drilling method for discharging slag by underground pneumatic impact crushed rock foam |
| CN111877978A (en) * | 2020-07-23 | 2020-11-03 | 重庆大学 | Hydraulic impactor |
| CN111877978B (en) * | 2020-07-23 | 2022-03-29 | 重庆大学 | Hydraulic impactor |
| CN113006680A (en) * | 2021-03-19 | 2021-06-22 | 成都欧维恩博石油科技有限公司 | Low-pressure-loss torsion impact drilling tool and rock breaking method |
| CN113585960A (en) * | 2021-08-05 | 2021-11-02 | 重庆大学 | Centre rotary valve type hydraulic impactor |
| CN113585960B (en) * | 2021-08-05 | 2023-11-21 | 重庆大学 | Central rotary valve type hydraulic impactor |
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| CN106401461B (en) | 2019-02-26 |
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