CN110700757B - Combined type link up and surges down-the-hole hammer - Google Patents
Combined type link up and surges down-the-hole hammer Download PDFInfo
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- CN110700757B CN110700757B CN201911111457.9A CN201911111457A CN110700757B CN 110700757 B CN110700757 B CN 110700757B CN 201911111457 A CN201911111457 A CN 201911111457A CN 110700757 B CN110700757 B CN 110700757B
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- side wall
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- upper valve
- outer side
- power transmission
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- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 239000002131 composite material Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 230000002265 prevention Effects 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000005553 drilling Methods 0.000 description 15
- 239000007788 liquid Substances 0.000 description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Abstract
The invention discloses a combined type through hydraulic down-the-hole hammer which comprises an outer tube, wherein the bottom end of the outer tube is connected with a power transmission shaft, a core tube is arranged in the outer tube, the bottom end of the core tube is connected with the power transmission shaft, and the interior of the core tube is communicated with the interior of the power transmission shaft; the outer side of the core tube is sleeved with an upper nozzle, an upper valve and a hammer assembly; a first annular nozzle is formed between the upper nozzle and the core tube; an upper valve movable cavity is arranged below the upper nozzle, an upper valve is arranged in the upper valve movable cavity, and the upper valve can slide up and down in the upper valve movable cavity; the impact hammer assembly comprises an upper piston, a lower piston and an impact hammer body, wherein the upper piston, the lower piston and the impact hammer body are sleeved on the outer side of the core pipe, the upper piston and the lower piston are respectively arranged at the upper end and the lower end of the impact hammer body, the impact hammer body is sleeved on the outer side of the upper piston and the lower piston, and the impact hammer assembly can slide along the axial direction relative to the inner side wall of the outer pipe; a second annular nozzle is formed between the bottom end of the upper piston and the core tube, a first bypass port is arranged on the side face of the impact hammer body, and the first bypass port is communicated with the second annular nozzle.
Description
Technical Field
The invention relates to the field of geological exploration, in particular to a composite type through hydraulic down-the-hole hammer.
Background
Core drilling is often needed in the fields of scientific drilling, petroleum and natural gas exploration, new energy exploration, development and the like, and the conventional lifting, drilling and core drilling process needs a large amount of auxiliary work for tripping, so that the labor intensity of operators is high, and the construction efficiency is low. The hydraulic hammer technology is adopted in petroleum and natural gas exploration, development and drilling, so that the drilling efficiency and drilling quality can be greatly improved, and the hydraulic down-the-hole hammer is used in combination with advanced processes such as wire coring drilling, reverse circulation continuous coring (sample) drilling and the like, so that the coring drilling work efficiency can be greatly improved.
Disclosure of Invention
The invention aims at providing a composite type through hydraulic down-the-hole hammer which can greatly improve the core drilling work efficiency.
In order to achieve the above object, the technical scheme of the present invention is as follows:
The compound type through hydraulic down-the-hole hammer comprises an outer tube, wherein the bottom end of the outer tube is connected with a power transmission shaft, a core tube is arranged in the outer tube, the bottom end of the core tube is connected with the power transmission shaft, and the interior of the core tube is communicated with the interior of the power transmission shaft; the outer side of the core tube is sleeved with an upper nozzle, an upper valve and a hammer assembly; the upper nozzle is sleeved on the outer side of the top end of the core tube and forms a first annular nozzle with the core tube; an upper valve movable cavity is arranged below the upper nozzle, an upper valve is arranged in the upper valve movable cavity, the upper valve can slide up and down in the upper valve movable cavity, and a sealing state is formed between the outer side wall of the upper valve and the inner side wall of the outer tube; the impact hammer assembly comprises an upper piston, a lower piston and an impact hammer body, wherein the upper piston, the lower piston and the impact hammer body are sleeved on the outer side of the core pipe, the upper piston and the lower piston are respectively arranged at the upper end and the lower end of the impact hammer body, the impact hammer body is sleeved on the outer sides of the upper piston and the lower piston, the outer side wall of the upper piston and the lower piston is in a sealing state with the inner side wall of the outer pipe, and the impact hammer assembly can slide relative to the inner side wall of the outer pipe along the axial direction; a second annular nozzle is formed between the bottom end of the upper piston and the core tube, a first bypass port is arranged on the side face of the impact hammer body, and the first bypass port is communicated with the second annular nozzle.
Further, the combined type through hydraulic down-the-hole hammer further comprises an upper connector and a lower connector, wherein the upper connector is arranged between the inner side wall of the outer tube and the outer side of the upper nozzle, the lower connector is arranged between the outer tube and the power transmission shaft, and the upper connector and the lower connector are respectively in threaded connection with the upper end and the lower end of the outer tube.
Further, the lower joint inside wall is connected with the power transmission shaft outside wall through the key, is provided with between power transmission shaft outside wall and the lower joint inside wall and can follow the anti-idle play clearance of axis direction slip, and the lower joint top is provided with the slips and is connected with power transmission shaft block through the slips.
Furthermore, the power transmission shaft can relatively slide along the axial direction relative to the bottom end of the core tube in the idle striking prevention clearance range, and the power transmission shaft and the core tube are in a sealing state.
Further, the combined type through hydraulic down-the-hole hammer further comprises an upper cylinder sleeve and a lower cylinder sleeve, wherein the upper cylinder sleeve and the lower cylinder sleeve are respectively fixedly sleeved on the inner side of the outer pipe, the upper cylinder sleeve is arranged between the inner side wall of the outer pipe and the outer side wall of the upper valve and the outer side wall of the upper piston, the outer side wall of the upper valve and the outer side wall of the upper piston can slide along the axial direction relative to the inner side wall of the upper cylinder sleeve, and the inner side wall of the upper cylinder sleeve is respectively in a sealing state with the outer side wall of the upper valve and the outer side wall of the upper piston; the lower cylinder sleeve is arranged between the inner side wall of the outer tube and the outer side wall of the lower piston, the outer side wall of the lower piston can slide relative to the inner side wall of the lower cylinder sleeve in the axial direction, and the inner side wall of the lower cylinder sleeve and the outer side wall of the lower piston are in a sealing state.
Further, the side wall of the upper valve is provided with a second bypass port and is communicated with the central hole of the upper piston through the second bypass port.
Further, the sliding travel of the upper valve in the upper valve moving cavity is 1-500 mm; the sliding travel of the impact hammer component relative to the inner side wall of the outer tube is 2-500 mm.
Further, the equivalent diameter of the first annular nozzle is 2-500 mm, and the equivalent diameter of the second annular nozzle is 1-500 mm.
Compared with the prior art, the invention has the advantages and positive effects that:
When the upper valve and the impact hammer assembly are in the vertical state, the upper valve and the impact hammer assembly are both positioned at the lower limit position, high-pressure liquid flow passes through a first annular nozzle formed by the upper nozzle and the core pipe, negative pressure is formed at the movable cavity of the upper valve, and the upper valve is lifted to be limited upwards; the liquid flow sequentially passes through an upper valve, an upper piston and a second annular nozzle to form high-speed jet flow, the kinetic energy of the liquid is converted into pressure energy under the action of a hammer body, the pressure of a lower cavity at the lower part of the lower piston rises, and the hammer assembly is lifted and accelerated to move upwards; when the impact hammer component moves upwards to be in contact with the lower end surface of the upper valve, water impact is formed, liquid flow is cut off, so that pressure conversion occurs between the original high-pressure cavity and the low-pressure cavity, and the upper valve and the impact hammer component are pushed to move downwards at high speed by instantaneous high pressure; the upper valve reaches the lower limit firstly, the impact hammer assembly continues to descend under the action of inertia and impacts the power transmission shaft to finish impact, at the moment, the part state of the composite through hydraulic down-the-hole hammer is restored to the initial state again, and the next working cycle starts to be started.
The upper valve adopts the jet-suction principle, and simultaneously utilizes the jet effect formed by the annular nozzle to control the flow direction of the liquid flow in the lower cavity, so that the number of sealing pairs is reduced, the blocking probability is reduced, and the adaptability of the composite type through hydraulic down-the-hole hammer to slurry media is improved; and it can carry out the coring operation through the core pipe, has solved coring drilling work among the prior art and has taken place in the condition of wasting time and energy, has effectively improved coring drilling work's efficiency, has brought the facility for people's use.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig.1 is a schematic structural view of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, modifications, equivalents, improvements, etc., which are apparent to those skilled in the art without the benefit of this disclosure, are intended to be included within the scope of this invention.
As shown in fig. 1, the invention provides a composite through hydraulic down-the-hole hammer, which comprises an upper joint 1, an upper nozzle 2, an outer pipe 3, a lower joint 4, a power transmission shaft 5, an upper cylinder sleeve 6, an upper valve 7, an upper piston 8, a lower cylinder sleeve 9, a lower piston 10, a hammer body 11, slips 12 and a core pipe 13. The inside of the outer tube 3 is provided with a core tube 13, the lower end of the core tube 13 is seated on the inner step of the power transmission shaft 5, and a through central channel is provided together with the power transmission shaft 5. The upper joint 1 and the lower joint 4 are connected with the outer tube 3 through threads. The lower sub 4 is in splined engagement with the power transmission shaft 5 to transmit the upper drill string torque to the lower drill bit. The lower joint 4 and the power transmission shaft 5 can slide relatively in the axial direction, an idle striking prevention space is provided, and the power transmission shaft 5 is limited not to deviate from through two semicircular slips 12. A first annular nozzle 16 is formed between the upper nozzle 2 and the core tube 13, the equivalent diameter of the first annular nozzle 16 is 2-500 mm, the first annular nozzle is opposite to the upper cavity and the central hole of the upper valve 7, the outer end surface of the upper valve 7 is in sliding fit with the inner end surface of the upper cylinder sleeve 6, the inner end surface of the upper valve 7 is in sliding fit with the outer end surface of the core tube 13, the upper valve 7 is positioned in an upper valve movable cavity, the upper valve 7 can freely move between the upper limit and the lower limit of the upper valve movable cavity 15 and form a moving seal with the core tube 13, the moving stroke is A, and the value of A is 1-500 mm; the side wall of the upper valve 7 is provided with a second bypass port and communicates with the central bore of the upper piston 8 through the second bypass port. The upper piston 8 and the lower piston 10 are connected with the hammer body 11 through conical surfaces or other mechanical connection modes to form a hammer assembly, the outer end surfaces of the upper piston 8 and the lower piston 10 are respectively in sliding fit with the inner end surfaces of the upper cylinder sleeve 6 and the lower cylinder sleeve 9, the upper piston and the lower piston can freely move between upper limit and lower limit and form moving seal with the upper cylinder sleeve 6 and the lower cylinder sleeve 9, the moving stroke is B, and the value of B is 2-500 mm. The upper end surface of the upper piston 8 and the lower end surface of the upper valve 7 can form end surface sealing when contacting, and water impact is formed. The impact hammer assembly impacts the power transmission shaft 5 when moving to the lower limit and transmits energy to the drill bit in a shock wave mode so as to improve the rock breaking of the drill bit. The upper cylinder sleeve 6 and the lower cylinder sleeve 9 are kept relatively static with the outer tube 3 in a limit mode such as a step, a second annular nozzle 14 is formed between the bottom end of the upper piston 8 and the core tube 13, the equivalent diameter of the second annular nozzle 14 is 1-500 mm, a first bypass port is formed in the side face of the impact hammer 11, and the first bypass port is communicated with the second annular nozzle 14.
The working process of the composite through hydraulic down-the-hole hammer is as follows: the upper valve 7 and the impact hammer component are both positioned at the lower limit position of the combined type through hydraulic down-the-hole hammer in an upright state, high-pressure liquid flow passes through a first annular nozzle 16 formed by the upper nozzle 2 and the core tube 13, negative pressure is formed at the upper cavity of the upper valve 7, and the upper valve 7 is lifted to be limited up; the liquid flow sequentially passes through the upper valve 7, the upper piston 8 and the second annular nozzle 14 to form high-speed jet flow, the kinetic energy of the liquid is converted into pressure energy under the action of the impact hammer body 11, the pressure of the lower cavity at the lower part of the lower piston 10 rises, and the impact hammer assembly is lifted and accelerated to move upwards; when the impact hammer assembly moves upwards to be in contact with the lower end face of the upper valve 7, water is impacted, the liquid flow is cut off, so that the original high-pressure cavity and the low-pressure cavity are subjected to pressure conversion, the upper valve 7 and the impact hammer assembly are pushed to move downwards at a high speed by instantaneous high pressure, and the liquid flow below the upper valve and the impact hammer assembly flows out from the first bypass port. The upper valve 7 reaches the lower limit firstly, and the impact hammer assembly continues to descend under the inertia effect and impacts the power transmission shaft 5 to finish impact. At this time, the state of the parts of the composite through hydraulic down-the-hole hammer is restored to the initial state again, and the next working cycle starts to be started.
The upper valve adopts the jet-suction principle, and simultaneously utilizes the jet effect formed by the annular nozzle to control the flow direction of the liquid flow in the lower cavity, so that the number of sealing pairs is reduced, the blocking probability is reduced, and the adaptability of the composite type through hydraulic down-the-hole hammer to slurry media is improved; and it can carry out the coring operation through the core pipe, has solved coring drilling work among the prior art and has taken place in the condition of wasting time and energy, has effectively improved coring drilling work's efficiency, has brought the facility for people's use.
Claims (6)
1. The utility model provides a compound formula link up and surges down-the-hole hammer, includes the outer tube, and outer tube bottom is connected with the power transmission axle, its characterized in that: a core pipe is arranged in the outer pipe, the bottom end of the core pipe is connected with the power transmission shaft, and the interior of the core pipe is communicated with the interior of the power transmission shaft; the outer side of the core tube is sleeved with an upper nozzle, an upper valve and a hammer assembly; the upper nozzle is sleeved on the outer side of the top end of the core tube and forms a first annular nozzle with the core tube; an upper valve movable cavity is arranged below the upper nozzle, an upper valve is arranged in the upper valve movable cavity, the upper valve can slide up and down in the upper valve movable cavity, and a sealing state is formed between the outer side wall of the upper valve and the inner side wall of the outer tube; the impact hammer assembly comprises an upper piston, a lower piston and an impact hammer body, wherein the upper piston, the lower piston and the impact hammer body are sleeved on the outer side of the core pipe, the upper piston and the lower piston are respectively arranged at the upper end and the lower end of the impact hammer body, the impact hammer body is sleeved on the outer sides of the upper piston and the lower piston, the outer side wall of the upper piston and the lower piston is in a sealing state with the inner side wall of the outer pipe, and the impact hammer assembly can slide relative to the inner side wall of the outer pipe along the axial direction; a second annular nozzle is formed between the bottom end of the upper piston and the core tube, a first bypass port is arranged on the side surface of the impact hammer body, and the first bypass port is communicated with the second annular nozzle;
the combined type through hydraulic down-the-hole hammer further comprises an upper cylinder sleeve and a lower cylinder sleeve, wherein the upper cylinder sleeve and the lower cylinder sleeve are respectively fixedly sleeved on the inner side of the outer pipe, the upper cylinder sleeve is arranged between the inner side wall of the outer pipe and the outer side wall of the upper valve and the outer side wall of the upper piston, the outer side wall of the upper valve and the outer side wall of the upper piston can slide in the axial direction relative to the inner side wall of the upper cylinder sleeve, and the inner side wall of the upper cylinder sleeve is respectively in a sealing state with the outer side wall of the upper valve and the outer side wall of the upper piston; the lower cylinder sleeve is arranged between the inner side wall of the outer tube and the outer side wall of the lower piston, the outer side wall of the lower piston can slide upwards along the axial direction relative to the inner side wall of the lower cylinder sleeve, and the inner side wall of the lower cylinder sleeve and the outer side wall of the lower piston are in a sealing state; the side wall of the upper valve is provided with a second bypass port and is communicated with the central hole of the upper piston through the second bypass port.
2. The composite through hydraulic down-the-hole hammer of claim 1, wherein: the combined type link up and surges down-the-hole hammer still includes top connection, lower clutch, and the top connection sets up between outer tube inside wall and last nozzle outside, and the lower clutch sets up between outer tube and power transmission axle, and top connection, lower clutch are in the upper and lower both ends threaded connection of outer tube respectively.
3. The composite through hydraulic down-the-hole hammer of claim 2, wherein: the lower joint inner side wall is connected with the power transmission shaft outer side wall through a key, an idle striking prevention gap capable of sliding along the axis direction is arranged between the power transmission shaft outer side wall and the lower joint inner side wall, and the top end of the lower joint is provided with a slip and is connected with the power transmission shaft through the slip in a clamping mode.
4. A composite through hydraulic down-the-hole hammer as defined in claim 3, wherein: the power transmission shaft can slide relatively along the axial direction relative to the bottom end of the core tube in the idle striking prevention gap range, and the power transmission shaft and the core tube are in a sealing state.
5. The composite through hydraulic down-the-hole hammer of claim 1, wherein: the sliding stroke of the upper valve in the upper valve moving cavity is 1-500 mm; the sliding travel of the impact hammer assembly relative to the inner side wall of the outer tube is 2-500 mm.
6. The composite through hydraulic down-the-hole hammer of claim 1, wherein: the equivalent diameter of the first annular nozzle is 2-500 mm, and the equivalent diameter of the second annular nozzle is 1-500 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911111457.9A CN110700757B (en) | 2019-11-14 | Combined type link up and surges down-the-hole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911111457.9A CN110700757B (en) | 2019-11-14 | Combined type link up and surges down-the-hole hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110700757A CN110700757A (en) | 2020-01-17 |
| CN110700757B true CN110700757B (en) | 2024-06-28 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210977276U (en) * | 2019-11-14 | 2020-07-10 | 中国地质科学院勘探技术研究所 | Combined type link up hydraulic down-the-hole hammer |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210977276U (en) * | 2019-11-14 | 2020-07-10 | 中国地质科学院勘探技术研究所 | Combined type link up hydraulic down-the-hole hammer |
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