CN204754803U - A endless form crossover sub for pneumatic downhole hammer that is just circulating - Google Patents

A endless form crossover sub for pneumatic downhole hammer that is just circulating Download PDF

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Publication number
CN204754803U
CN204754803U CN201520311654.6U CN201520311654U CN204754803U CN 204754803 U CN204754803 U CN 204754803U CN 201520311654 U CN201520311654 U CN 201520311654U CN 204754803 U CN204754803 U CN 204754803U
Authority
CN
China
Prior art keywords
core pipe
lower contact
pin
slag inlet
sub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201520311654.6U
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Chinese (zh)
Inventor
王艳丽
伍晓龙
许刘万
殷国乐
陈浩文
郑庆辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Langfang Juli Exploration Technology Co Ltd
Institute of Exploration Technology Chinese Academy of Geological Sciences
Original Assignee
JULI GEO-ENGINEERING TECHNICAL DEVELOPMENT Co (LANGFANG)
Institute of Exploration Technology Chinese Academy of Geological Sciences
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Filing date
Publication date
Application filed by JULI GEO-ENGINEERING TECHNICAL DEVELOPMENT Co (LANGFANG), Institute of Exploration Technology Chinese Academy of Geological Sciences filed Critical JULI GEO-ENGINEERING TECHNICAL DEVELOPMENT Co (LANGFANG)
Priority to CN201520311654.6U priority Critical patent/CN204754803U/en
Application granted granted Critical
Publication of CN204754803U publication Critical patent/CN204754803U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides an endless form crossover sub for pneumatic downhole hammer that is just circulating, including the pin and box sub, the lower clutch, core pipe and seal cover, the pin and box sub is connected with lower connector thread, the pin and box sub upper end is equipped with the jointed rod internal thread, the lower clutch lower extreme is equipped with the connection pneumatic downhole hammer internal thread that is just circulating, the core pipe is located pin and box sub and lower clutch, the open bottom in core pipe upper end is sealed, core pipe and pin and box sub, intermural formation inlet channel in the lower clutch, the lower clutch lower part is equipped with lower clutch slag inlet, core pipe lower part is equipped with core pipe slag inlet, core pipe slag inlet corresponds with lower clutch slag inlet position, core pipe slag inlet, lower clutch slag inlet hands over the face to be sealed by the face of weld with cutting of inlet channel, the seal cover suit is in the pin and box sub lower part. The utility model discloses the cooperation is just circulating pneumatic downhole hammer and double -walled drilling rod and can change endless form, is just circulating the down -the -hole hammer with conventional heavy -calibre and is comparing, and the detritus upward velocity can improve three to tens times, drills efficiency and is showing and improve, has the economic benefits who is showing very much.

Description

A kind of endless form crossover sub for direct circulation pneumatic down-hole hammer
Technical field
The utility model relates to a kind of drilling rig, specifically direct circulation pneumatic down-hole hammer is converted to the crossover sub of reacting cycle mode.
Background technology
Pneumatic down-hole hammer applies more drilling method, is divided into direct circulation and reacting cycle according to deslagging mode difference.Direct circulation Drilling Technology of Airdriven DTH Hammer adopts the single wall rod boring connecting direct circulation pneumatic down-hole hammer, it is high that this technology has drilling efficiency, bit life is long, required the pressure of the drill is low, moment of torsion is little, rotating speed is low, borehole perpendicularity advantages of higher, is widely used in the various fields of probing.In recent years with the development of drilling technique, boring bore strengthens gradually.Boring bore is large, and the annular gap area between boring and drilling rod is excessive, low according to direct circulation Drilling Technology of Airdriven DTH Hammer landwaste upward velocity.In addition, when requiring that realizing continuous sampling creeps into, need direct circulation pneumatic down-hole hammer to creep into be converted to reacting cycle mode, so that improve landwaste upward velocity, collection rock sample.Realize the key of direct circulation pneumatic down-hole hammer for reacting cycle mode, be need by convenient, fast with double-wall drill pipe for direct circulation pneumatic down-hole hammer, be connected reliably, realize double-wall drill pipe central passage deslagging.
Utility model content
The purpose of this utility model is to provide a kind of endless form crossover sub for direct circulation pneumatic down-hole hammer, utilize this crossover sub that direct circulation pneumatic down-hole hammer can be used reliably to be connected with double-wall drill pipe, thus realize direct circulation pneumatic down-hole hammer and be converted to reverse circulation drilling mode.
The adopted technical scheme that solves the problem is as follows:
A kind of endless form crossover sub for direct circulation pneumatic down-hole hammer, comprise pin and box sub, lower contact, core pipe and sealing shroud, pin and box sub, lower contact is hollow-core construction, described pin and box sub upper end is provided with jointed rod internal thread, pin and box sub lower end is connected with lower contact threaded upper ends, lower contact lower end is provided with and connects direct circulation pneumatic down-hole hammer internal thread, described core pipe is positioned at the through hole of pin and box sub and lower contact, core pipe is hollow-core construction, core pipe upper end open bottom is closed, core pipe and pin and box sub, between lower contact inwall, Formation cross-section is the inlet channel of annular, core tube hub is slagging channel, described lower contact bottom is provided with lower contact slag inlet, described core pipe bottom is provided with core pipe slag inlet, core pipe slag inlet is corresponding with lower contact slag inlet position, described core pipe slag inlet, the intersecting surface of lower contact slag inlet and inlet channel is closed by solder side, described sealing shroud is sleeved on pin and box sub bottom.
The above-mentioned endless form crossover sub for direct circulation pneumatic down-hole hammer, the outer wall place of described core pipe is uniformly distributed back-up block, and the inwall place of described lower contact is provided with limiting stand, and described back-up block is positioned on limiting stand.
The above-mentioned endless form crossover sub for direct circulation pneumatic down-hole hammer, described pin and box sub with form key by key between sealing shroud and be connected, the lower surface of sealing shroud is supported by the upper surface of lower contact.
The above-mentioned endless form crossover sub for direct circulation pneumatic down-hole hammer, described lower contact slag inlet is two, and two lower contact slag inlets are symmetricly set on lower contact bottom; Core pipe slag inlet is two, and two core pipe slag inlets are symmetricly set on core pipe bottom, and described lower contact slag inlet is oval, and described core pipe slag inlet and lower contact deslagging shape, size match.
The above-mentioned endless form crossover sub for direct circulation pneumatic down-hole hammer, described core pipe upper end is provided with four road sealing grooves.
The above-mentioned endless form crossover sub for direct circulation pneumatic down-hole hammer, described drilling rod connects internal thread, direct circulation pneumatic down-hole hammer connection internal thread is tapered tread, and described pin and box sub and lower contact are that tapered tread is connected.
The beneficial effects of the utility model are as follows: 1. the connection realizing direct circulation pneumatic down-hole hammer and double-wall drill pipe, change direct circulation pneumatic down-hole hammer into reacting cycle mode, improve drilling efficiency, by the setting of sealing shroud and slag inlet, realize the continuous sampling of double-wall drill pipe central passage; 2. overall structure is simple, and is connected reliably when double-wall drill pipe, direct circulation pneumatic down-hole hammer adapted, easy to operate; 3. the sealing shroud abrasion resistance through cure process is good, and demountable structure adds the application life of described crossover sub, also can be applicable to the boring of different-diameter.The utility model coordinates direct circulation pneumatic down-hole hammer and double-wall drill pipe to carry out reverse circulation drilling mode, compared with conventional heavy caliber direct circulation down-hole hammer, landwaste upward velocity can improve three to tens times, and drilling efficiency significantly improves, and has the economic benefit of highly significant.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1;
Fig. 4 is using state schematic diagram of the present utility model.
In figure, each part numbers is as follows: 1. pin and box sub; 1-1, jointed rod internal thread, 2. core pipe; 2-1, seal groove, 2-2, core pipe slag inlet, 2-3, slagging channel, 3. sealing shroud, 4. lower contact, 4-1, lower contact slag inlet, 4-2, connection direct circulation pneumatic down-hole hammer internal thread, 4-3, limiting stand, 5. back-up block, 6. solder side, 7, key, 8, inlet channel, 9, double-wall drill pipe, 10, direct circulation pneumatic down-hole hammer.
Detailed description of the invention
Referring to Fig. 1, the utility model comprises pin and box sub 1, lower contact 4, core pipe 2 and sealing shroud 3, and pin and box sub and lower contact are hollow-core construction, and the two configures up and down.The conical inner screw thread that pin and box sub lower end is arranged and the circular cone external screw thread that lower contact upper end is arranged are interconnected.The upper end of pin and box sub is provided with jointed rod internal thread 1-1, and jointed rod internal thread is tapered tread.Lower contact lower end is provided with and connects direct circulation pneumatic down-hole hammer internal thread 4-2, and connecting direct circulation pneumatic down-hole hammer internal thread is tapered tread.Core pipe 2 is positioned at the through hole of pin and box sub and lower contact, and core pipe is hollow, and core pipe upper end open bottom is closed, and the center cavity of core pipe is slagging channel 2-3, and between core pipe and pin and box sub, lower contact inwall, Formation cross-section is the inlet channel 8 of annular.Core pipe is provided with the four road sealing groove 2-1 for installing sealing ring, realizes the sealing with double-wall drill pipe annular gap.Sealing shroud 3 is sleeved on pin and box sub bottom, forms key be connected between pin and box sub with sealing shroud by key 7, and the lower surface of sealing shroud is supported by the upper surface of lower contact.When the utility model uses, the hole wall of sealing shroud and boring is formed and seals, and forces landwaste to enter core pipe, and then enters the double-wall drill pipe central passage be connected with pin and box sub, realizes the change of endless form.Sealing shroud surface increases its abrasion resistance through cure process, lower contact and core pipe can be disassembled, change Xinmi City's big envelope, increase the application life of main body after sealing shroud wearing and tearing.In addition, by changing the sealing shroud of different-diameter, the utility model be can be applicable in the boring of different-diameter.
Referring to Fig. 1, Fig. 2, the outer wall place of core pipe 2 is uniformly distributed four back-up blocks 5, and the inwall place of lower contact is provided with limiting stand 4-3, and described back-up block is positioned on limiting stand.Using state, the upper end of core pipe is connected with the interior pipe of double-walled drilling pipe.
Referring to Fig. 1, Fig. 3, lower contact bottom is symmetrical arranged two lower contact slag inlet 4-1, and core pipe bottom is symmetrical arranged two core pipe slag inlet 2-2, and core pipe slag inlet is corresponding with lower contact slag inlet position, and shape, size match.The present embodiment, lower contact slag inlet is oval.The intersecting surface of described core pipe slag inlet, lower contact slag inlet and inlet channel is closed by solder side 6, thus inlet channel and slagging channel is kept apart.
Referring to Fig. 4, when the utility model uses, pin and box sub upper end is connected with double-wall drill pipe 9, the lower end of lower contact is connected with direct circulation pneumatic down-hole hammer 10, compressed air, from the annular gap of double-wall drill pipe 9, enters inlet channel, provides power to direct circulation pneumatic down-hole hammer 10, landwaste is entered into slag input passage by lower contact slag inlet, core pipe slag inlet simultaneously, realize reacting cycle mode.

Claims (6)

1. the endless form crossover sub for direct circulation pneumatic down-hole hammer, it is characterized in that: comprise pin and box sub (1), lower contact (4), core pipe (2) and sealing shroud (3), pin and box sub, lower contact is hollow-core construction, described pin and box sub upper end is provided with jointed rod internal thread (1-1), pin and box sub lower end is connected with lower contact threaded upper ends, lower contact lower end is provided with and connects direct circulation pneumatic down-hole hammer internal thread (4-2), described core pipe is positioned at the through hole of pin and box sub and lower contact, core pipe is hollow-core construction, core pipe upper end open bottom is closed, core pipe and pin and box sub, between lower contact inwall, Formation cross-section is the inlet channel (8) of annular, core tube hub is slagging channel (2-3), described lower contact bottom is provided with lower contact slag inlet (4-1), described core pipe bottom is provided with core pipe slag inlet (2-2), core pipe slag inlet is corresponding with lower contact slag inlet position, described core pipe slag inlet, the intersecting surface of lower contact slag inlet and inlet channel is closed by solder side (6), described sealing shroud is sleeved on pin and box sub bottom.
2. the endless form crossover sub for direct circulation pneumatic down-hole hammer according to claim 1, it is characterized in that: the outer wall place of described core pipe (2) is uniformly distributed back-up block (5), the inwall place of described lower contact is provided with limiting stand (4-3), and described back-up block is positioned on limiting stand.
3. the endless form crossover sub for direct circulation pneumatic down-hole hammer according to claim 2, is characterized in that: described pin and box sub with form key by key (7) between sealing shroud and be connected, the lower surface of sealing shroud is supported by the upper surface of lower contact.
4. the endless form crossover sub for direct circulation pneumatic down-hole hammer according to claim 3, it is characterized in that: described lower contact slag inlet is two, two lower contact slag inlets are symmetricly set on lower contact bottom; Core pipe slag inlet is two, and two core pipe slag inlets are symmetricly set on core pipe bottom, and described lower contact slag inlet is oval, and described core pipe slag inlet and lower contact deslagging shape, size match.
5. the endless form crossover sub for direct circulation pneumatic down-hole hammer according to claim 4, is characterized in that: described core pipe upper end is provided with four road sealing grooves (2-1).
6. the endless form crossover sub for direct circulation pneumatic down-hole hammer according to claim 5, it is characterized in that: described drilling rod connects internal thread, direct circulation pneumatic down-hole hammer connection internal thread is tapered tread, and described pin and box sub and lower contact are that tapered tread is connected.
CN201520311654.6U 2015-05-15 2015-05-15 A endless form crossover sub for pneumatic downhole hammer that is just circulating Expired - Fee Related CN204754803U (en)

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Application Number Priority Date Filing Date Title
CN201520311654.6U CN204754803U (en) 2015-05-15 2015-05-15 A endless form crossover sub for pneumatic downhole hammer that is just circulating

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107701123A (en) * 2017-11-29 2018-02-16 河北天理环保科技有限公司 A kind of air drilling double-wall drill rod reverse circulation crossover sub
CN107724970A (en) * 2017-11-07 2018-02-23 北京泰利新能源科技发展有限公司 A kind of down-hole hammer crossover sub, down-hole hammer drilling rod and down-hole hammer
CN111287743A (en) * 2020-04-10 2020-06-16 中国地质科学院探矿工艺研究所 Air reverse circulation continuous sampling drilling system and process method for water-bearing stratum

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107724970A (en) * 2017-11-07 2018-02-23 北京泰利新能源科技发展有限公司 A kind of down-hole hammer crossover sub, down-hole hammer drilling rod and down-hole hammer
CN107701123A (en) * 2017-11-29 2018-02-16 河北天理环保科技有限公司 A kind of air drilling double-wall drill rod reverse circulation crossover sub
CN111287743A (en) * 2020-04-10 2020-06-16 中国地质科学院探矿工艺研究所 Air reverse circulation continuous sampling drilling system and process method for water-bearing stratum
CN111287743B (en) * 2020-04-10 2022-08-23 中国地质科学院探矿工艺研究所 Air reverse circulation continuous sampling drilling system and process method for water-bearing stratum
CN115059462A (en) * 2020-04-10 2022-09-16 中国地质科学院探矿工艺研究所 Technological method of air reverse circulation continuous sampling drilling system
CN115110949A (en) * 2020-04-10 2022-09-27 中国地质科学院探矿工艺研究所 Forward and reverse circulation remote control switching joint of continuous sampling drilling system
CN115059462B (en) * 2020-04-10 2023-02-14 中国地质科学院探矿工艺研究所 Technological method of air reverse circulation continuous sampling drilling system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 065000 No. 77, Golden Road, Langfang, Hebei

Co-patentee after: Langfang Juli Exploration Technology Co., Ltd

Patentee after: INSTITUTE OF EXPLORATION TECHNIQUE, CHINESE ACADEMY OF GEOLOGICAL SCIENCES

Address before: 065000 No. 77, Golden Road, Langfang, Hebei

Co-patentee before: JULI GEO-ENGINEERING TECHNICAL DEVELOPMENT COMPANY (LANGFANG)

Patentee before: INSTITUTE OF EXPLORATION TECHNIQUE, CHINESE ACADEMY OF GEOLOGICAL SCIENCES

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151111

Termination date: 20210515