CN108316855B - A kind of rotary valve type hydraulic percussion device - Google Patents
A kind of rotary valve type hydraulic percussion device Download PDFInfo
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- CN108316855B CN108316855B CN201711459418.9A CN201711459418A CN108316855B CN 108316855 B CN108316855 B CN 108316855B CN 201711459418 A CN201711459418 A CN 201711459418A CN 108316855 B CN108316855 B CN 108316855B
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- fluid channel
- fluid
- cylinder body
- channel
- piston
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- 238000009527 percussion Methods 0.000 title claims abstract description 6
- 239000012530 fluid Substances 0.000 claims abstract description 209
- 210000004907 gland Anatomy 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009699 differential effect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of rotary valve type hydraulic percussion devices, its top connection is connect by screw thread with upper exterior tube, gland and valve deck are successively fixed on the upper surface of cylinder body by top connection, cylinder body is inserted in upper exterior tube, the rotor being freely rotated is covered various vertical and radial fluid channels on the upper end of cylinder body periphery, cylinder body；Piston is that a piston rod string has upper piston head and lower piston head, piston is to be machined with upper piston head and lower piston head on a piston rod, end cap is inserted into cylinder body lower end, by positioning finger setting, center tap is threadedly coupled upper exterior tube and lower outer pipe, and piston rod passes through end cap and connect to form a movement entirety with hammer body, spline housing is connect by screw thread with lower outer pipe, spline cooperation on spline and spline housing on bit body, forms the assembly being axially movable, hammer body bottom surface is contacted with drill bit top surface.The invention has the advantages that avoiding blocking problem caused by slide valve, structure is simple, impact energy is big, long service life.
Description
Technical field
The invention belongs to drilling tools, and in particular to a kind of hydraulic impacter is widely used in for hard rock fast drilling
Drilling well.
Background technique
With the superficial part energy, the scarcity of resource, deep prospecting, Deep Oil-gas exploration, hot dry rock development and utilization etc. are in succession real
It applies, improving deep firm hard formation drilling footage efficiency is to reduce the important channel of all kinds of costs of drilling engineering.With rotary drilling skill
Art is compared, and percussion drilling technology has significant advantage in hard drilling field and the hydraulical impact of various structures has been developed
Device.But since all kinds of hydraulic impacters have the problems such as structure is complicated, service life is low, impact energy is small, make hydraulic impacter
Application be restricted.
Chinese patent literature CN104405280A disclosed on March 11st, 2015 a kind of stroke differential type high energy surge it is latent
Hole impactor, it is slidably matched by the spline on drill bit with spline, and valve deck set is packed into valve pocket upper end with valve pocket interference fit；Valve
In lid insertion cylinder body upper end hole, valve deck is radially provided with low pressure emptying channel, and cylinder body is radially provided with corresponding with each radial passage
Duct, and linked up with corresponding axial channel.High energy surge down-the-hole air hammer top by top connection and center tap respectively with
It is integral that outer shell is threadedly coupled encapsulation.But the patent exists since it uses slide valve as high-pressure fluid switching control unit
Structure is complicated and disperses for impactor, and slide valve is easy to the outstanding problems such as blocking.
Summary of the invention
Existing hydraulic impacter there are aiming at the problem that, the technical problem to be solved by the invention is to provide a kind of rotary valves
Formula hydraulic impacter, it is avoided that blocking problem caused by slide valve, and structure is simple, impact energy is big, long service life.
The technical problem to be solved by the present invention is in this way technical solution realize, it include top connection, rotor,
Cylinder body, piston, center tap, hammer body and drill bit；Top connection is connect by screw thread with upper exterior tube, and top connection is successively by gland and valve deck
It is fixed on the upper surface of cylinder body, gland central part is provided with the channel communicated with a fluid channel of top connection central part, gland side
The gap that wall is provided with radial communication upper exterior tube is formed by the b fluid channel of c fluid channel；
Cylinder body is inserted in upper exterior tube, and the valve seat upper end for stationary housing compresses the interior step of upper exterior tube, valve seat lower end card
A firmly outer step in the middle part of cylinder body；The rotor being freely rotated is covered in the upper end of cylinder body periphery, living between valve seat and cylinder body
It plugs in cylinder body,
The outer wall of cylinder body upper section is provided with vertical e fluid space and h fluid space；The excircle of outer wall of cylinder block upper section
T fluid channel and w fluid channel is distributed with, the u stream of a connection f fluid space is provided with inside t fluid channel
Body channel；Inferior part of the cylinder block is also provided with one from w fluid channel to the y fluid channel of m fluid space；The circumferential direction of rotor point
It is furnished with s fluid channel and v fluid channel, the connection corresponding with t fluid channel of s fluid channel, v fluid channel and the
The corresponding connection of w fluid channel；The excircle of rotor lower part is provided with the xth fluid channel with the dislocation of s fluid channel, corresponding connection
T fluid channel；The bottom of the e fluid space of cylinder body is provided with the g fluid channel with f fluid space radial communication；Cylinder
Internal portion middle section is provided with the i-th fluid channel with the n-th fluid channel radial communication；Cylinder interior middle and lower sections are provided with and the n-th fluid
The l fluid channel of channel radial communication；Cylinder interior middle and lower sections are provided with logical with the jth fluid of h fluid space radial communication
Road；
Piston is to be machined with upper piston head and lower piston head on a piston rod, is constituted between cylinder body top and upper piston head
F fluid space；Kth fluid space is constituted between upper piston head and lower piston head；M stream is constituted between lower piston head and end cap
Body space；
End cap is inserted into cylinder body lower end, and by positioning finger setting, center tap is threadedly coupled upper exterior tube and lower outer pipe, and end cap passes through
The interior step of center tap limits vertical position；Piston rod passes through end cap and connect to form a movement entirety with hammer body, and hammer body is under
In outer tube；Spline housing is connect by screw thread with lower outer pipe, and the spline cooperation on the spline and spline housing on bit body, formation can
The assembly of axial movement, and prevent drill bit from falling off from spline housing by semicircle card；Hammer body bottom surface is contacted with drill bit top surface；
Upper exterior tube internal voids between valve seat and end cap constitute the n-th fluid channel；Gap between hammer body and lower outer pipe
Constitute o fluid channel；Bit upper end has pth fluid channel, and bit central portion is equipped with q fluid channel, and r is arranged at drill bit lower part
Fluid channel.
Technical effect of the invention:
Using rotor as control high-pressure fluid switching component, have it is compact-sized, be not easy blocking, sensitive spy
Point, while using the opening and closing of rotating manner realization fluid channel, it can also open stream to greatest extent in the case where smaller rotation
Body channel reduces the local pressure loss of high-pressure fluid, improves the energy utilization efficiency of high-pressure fluid.
So the invention has the advantages that avoiding blocking problem caused by slide valve, structure is simple, impact energy is big, uses
Service life is long.
Detailed description of the invention
Detailed description of the invention of the invention is as follows:
Fig. 1 a is the structural schematic diagram of upper section of the present invention；
Fig. 1 b is the structural schematic diagram of lower section of the present invention；
The lower end Fig. 1 a and the upper end Fig. 1 b connect and compose entirety；
Fig. 2 is A-A sectional view in Fig. 1 a；
Fig. 3 is C-C sectional view in Fig. 1 a；
Fig. 4 is D-D sectional view in Fig. 1 a；
Fig. 5 is E-E sectional view in Fig. 1 a；
Fig. 6 is F-F sectional view in Fig. 1 a；
Fig. 7 is G-G sectional view in Fig. 1 a；
Fig. 8 is H-H sectional view in Fig. 1 a.
In figure: 1. top connections, 2. glands, 3. valve decks, 4. rotors, 5. valve seats, 6. cylinder bodies, 7. pistons, 8. upper exterior tubes, 9. is fixed
Position pin, 10. end caps, 11. center taps, 12. lower outer pipes, 13. hammer bodies, 14. semicircle cards, 15. drill bits, 16. spline housings；
A. a fluid channel, b. b fluid channel, c. c fluid channel, e. e fluid space,
F. f fluid space, g. g fluid channel, h. h fluid space, the i-th fluid channel of i.,
J. jth fluid channel, k. kth fluid space, l. l fluid channel, m. m fluid space,
N. the n-th fluid channel, o. o fluid channel, p. pth fluid channel, q. q fluid channel,
R. r fluid channel, s. s fluid channel, t. t fluid channel, u. u fluid channel,
V. v fluid channel, w. w fluid channel, x. xth fluid channel, y. y fluid channel.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
As illustrated in figs. 1A and ib, the present invention includes top connection 1, rotor 4, cylinder body 6, piston 7, center tap 11, hammer body 13
With drill bit 15；
Top connection 1 is connect by screw thread with upper exterior tube 8, and gland 2 and valve deck 3 are successively fixed on the upper of cylinder body 6 by top connection 1
End face, valve deck 3 limit the axial motion of rotor 4, and 2 central part of gland is provided with to be communicated with a fluid channel of 1 central part of top connection
Channel, the gap that 2 side wall of gland is provided with radial communication upper exterior tube 8 is formed by the b fluid channel of c fluid channel；
Cylinder body 6 is inserted in upper exterior tube 8, and the interior step of upper exterior tube 8, valve seat 5 are compressed for 5 upper end of valve seat of stationary housing 6
Block an outer step at 6 middle part of cylinder body in lower end；4 sets of the rotor being freely rotated in the upper end of cylinder body 6 periphery, be located at valve seat 5 with
Between cylinder body 6, piston 7 is placed in cylinder body 6,
As shown in Fig. 2, the outer wall of 6 upper section of cylinder body is provided with vertical e fluid space and h fluid space；6 outer wall of cylinder body
T fluid channel and w fluid channel is distributed in the excircle of upper section, and a connection f fluid is provided with inside t fluid channel
The u fluid channel in space；As shown in figure 8,6 lower part of cylinder body is also provided with from w fluid channel to m fluid space
Y fluid channel；The circumferentially distributed of rotor 4 has s fluid channel and v fluid channel, s fluid channel and t fluid channel
Corresponding connection, the connection corresponding with w fluid channel of v fluid channel；As shown in figure 3, the excircle of 4 lower part of rotor is provided with and the
The xth fluid channel of s fluid channel dislocation, corresponding connection t fluid channel；As shown in figure 4, the e fluid space of cylinder body 6
Bottom is provided with the g fluid channel with f fluid space radial communication；As shown in figure 5,6 inside middle section of cylinder body is provided with and the n-th stream
I-th fluid channel of body channel radial communication；As shown in fig. 6,6 inside middle and lower sections of cylinder body are provided with and radially connect with the n-th fluid channel
Logical l fluid channel；Lead to as shown in fig. 7,6 inside middle and lower sections of cylinder body are provided with the jth fluid of h fluid space radial communication
Road；
Piston is to be machined with upper piston head and lower piston head, structure between 6 top of cylinder body and upper piston head on a piston rod
At f fluid space；Kth fluid space is constituted between upper piston head and lower piston head；It is constituted between lower piston head and end cap 10
M fluid space；
End cap 10 is inserted into 6 lower end of cylinder body, is positioned by positioning pin 9, center tap 11 is threadedly coupled upper exterior tube 8 and lower outer pipe
12, end cap 10 limits vertical position by the interior step of center tap 11；Piston rod passes through end cap 10 and connect formation one with hammer body 13
A movement is whole, and hammer body 13 is in lower outer pipe 12；Spline housing 16 is connect by screw thread with lower outer pipe 12, on 15 bit body of drill bit
Spline on spline and spline housing 16 cooperates, and forms the assembly being axially movable, and by semicircle card 14 prevent drill bit from
It falls off in spline housing；13 bottom surface of hammer body is contacted with 15 top surface of drill bit；
8 internal voids of upper exterior tube between valve seat 5 and end cap 10 constitute the n-th fluid channel；Hammer body 13 and lower outer pipe 12 it
Between gap constitute o fluid channel；There is pth fluid channel in 15 upper end of drill bit, and 15 central part of drill bit is equipped with q fluid channel,
R fluid channel is arranged at 15 lower part of drill bit.
The working principle of the invention:
Cleaner for high-pressure drilling fluid is logical from the s fluid of rotor 4 by a fluid channel, b fluid channel, c fluid channel
Road, the t fluid channel of cylinder body 6, u fluid channel enter f fluid space, and pass through g fluid channel, into e
Fluid space, drive rotor 4 rotate counterclockwise.
After rotor 4 rotates, s fluid channel is isolated with t fluid channel, the xth fluid channel and t of 4 lower part of rotor
Fluid channel connection, the channel that cleaner for high-pressure drilling fluid enters f fluid space are cut off, can only be logical by the v fluid of rotor 4
The w fluid channel in road, cylinder body 6, the y fluid channel of 6 lower part of cylinder body enter m fluid space, push piston 7 upward
Movement.
Fluid in cylinder interior f fluid space passes through u fluid channel, t fluid channel, 4 lower part xth stream of rotor
Body channel, the n-th fluid channel, o fluid channel, pth fluid channel, q fluid channel and r fluid channel drain into bottom hole.
When piston 7 moves upward to maximum of points under the high-pressure fluid effect in m fluid space, jth fluid is logical
Road is connected to m fluid space；G fluid channel is connected to the i-th fluid channel by kth fluid space, e fluid space
Fluid is logical by kth fluid space, the i-th fluid channel, the n-th fluid channel, o fluid channel, pth fluid channel, q fluid
Road and r fluid channel drain into bottom hole；High-pressure fluid enters h fluid sky through jth fluid channel from m fluid space
Between, drive rotor 4 rotates clockwise.
After rotor 4 rotates clockwise, s fluid channel is connected to t fluid channel, xth fluid channel and t fluid
Channel separation, the channel that cleaner for high-pressure drilling fluid enters f fluid space are opened；
Cleaner for high-pressure drilling fluid enters in f fluid space and m fluid space simultaneously, since lower piston head is connected with piston rod,
Cause its effective contact area smaller, the effective area that high-pressure fluid acts on upper piston head, which is greater than, to be acted on lower piston head
Effective area, the upper piston head of piston 7 pressure in f fluid space are greater than lower piston head institute in m fluid space
The pressure received, piston 7 form differential action and move downward.Fluid when piston 7 runs to bottom dead centre, in h fluid space
By jth fluid channel, kth fluid space and the outflow of l fluid channel.
It repeats the above process, realizes percussion drilling function.
Claims (1)
1. a kind of rotary valve type hydraulic percussion device, including top connection, rotor, cylinder body, piston, center tap, hammer body and drill bit；Top connection
It is connect by screw thread with upper exterior tube, it is characterized in that: gland and valve deck are successively fixed on the upper surface of cylinder body by top connection, in gland
Center portion is provided with the channel communicated with a fluid channel of top connection central part, and gland side wall is provided with the seam of radial communication upper exterior tube
Gap is formed by the b fluid channel of c fluid channel；
Cylinder body is inserted in upper exterior tube, and the valve seat upper end for stationary housing compresses the interior step of upper exterior tube, and cylinder is blocked in valve seat lower end
An outer step in the middle part of body；The rotor being freely rotated is covered in the upper end of cylinder body periphery, and between valve seat and cylinder body, piston is set
In in cylinder body,
The outer wall of cylinder body upper section is provided with vertical e fluid space and h fluid space；The excircle of outer wall of cylinder block upper section is distributed
There are t fluid channel and w fluid channel, the u fluid that a connection f fluid space is provided with inside t fluid channel is logical
Road；Inferior part of the cylinder block is also provided with one from w fluid channel to the y fluid channel of m fluid space；The circumferentially distributed of rotor has
S fluid channel and v fluid channel, the connection corresponding with t fluid channel of s fluid channel, v fluid channel and w flow
The corresponding connection in body channel；The excircle of rotor lower part is provided with the xth fluid channel with the dislocation of s fluid channel, corresponding connection t
Fluid channel；The bottom of the e fluid space of cylinder body is provided with the g fluid channel with f fluid space radial communication；In cylinder body
Portion middle section is provided with the i-th fluid channel with the n-th fluid channel radial communication；Cylinder interior middle and lower sections are provided with and the n-th fluid channel
The l fluid channel of radial communication；Cylinder interior middle and lower sections are provided with the jth fluid channel with h fluid space radial communication；
Piston is to be machined with upper piston head and lower piston head on a piston rod, constitutes f between cylinder body top and upper piston head
Fluid space；Kth fluid space is constituted between upper piston head and lower piston head；M fluid is constituted between lower piston head and end cap
Space；
End cap is inserted into cylinder body lower end, and by positioning finger setting, center tap is threadedly coupled upper exterior tube and lower outer pipe, end cap pass through in connect
The interior step of head limits vertical position；Piston rod passes through end cap and connect to form a movement entirety with hammer body, and hammer body is in lower outer pipe
It is interior；Spline housing is connect by screw thread with lower outer pipe, and the spline cooperation on the spline and spline housing on bit body, formation can be axial
The assembly of movement, and prevent drill bit from falling off from spline housing by semicircle card；Hammer body bottom surface is contacted with drill bit top surface；
Upper exterior tube internal voids between valve seat and end cap constitute the n-th fluid channel；Gap between hammer body and lower outer pipe is constituted
O fluid channel；Bit upper end has pth fluid channel, and bit central portion is equipped with q fluid channel, and r fluid is arranged at drill bit lower part
Channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711459418.9A CN108316855B (en) | 2017-12-28 | 2017-12-28 | A kind of rotary valve type hydraulic percussion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711459418.9A CN108316855B (en) | 2017-12-28 | 2017-12-28 | A kind of rotary valve type hydraulic percussion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108316855A CN108316855A (en) | 2018-07-24 |
| CN108316855B true CN108316855B (en) | 2019-06-25 |
Family
ID=62893309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711459418.9A Active CN108316855B (en) | 2017-12-28 | 2017-12-28 | A kind of rotary valve type hydraulic percussion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108316855B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111877978B (en) * | 2020-07-23 | 2022-03-29 | 重庆大学 | Hydraulic impactor |
| CN113585960B (en) * | 2021-08-05 | 2023-11-21 | 重庆大学 | Central rotary valve type hydraulic impactor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3327790A (en) * | 1966-10-24 | 1967-06-27 | Pan American Petroleum Corp | Liquid percussion motor |
| CN2866785Y (en) * | 2005-01-19 | 2007-02-07 | 李国民 | Rotary valve type hydraulic percussion device |
| CN202673138U (en) * | 2012-07-23 | 2013-01-16 | 宜昌市五环钻机具有限责任公司 | Piston guide sleeve type valveless double-cylinder down-hole hammer |
| CN103244052B (en) * | 2013-05-15 | 2015-02-18 | 西南石油大学 | Hydraulic hammer rod type impact drilling tool |
| CN205297316U (en) * | 2015-12-18 | 2016-06-08 | 中国石油天然气集团公司 | Level is directional bores with efflux formula churn drilling tools that surges |
| CN106481273A (en) * | 2016-11-09 | 2017-03-08 | 西南石油大学 | Fluidic oscillation realizes the drilling tool of axial impact |
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2017
- 2017-12-28 CN CN201711459418.9A patent/CN108316855B/en active Active
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| CN108316855A (en) | 2018-07-24 |
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