CN203308389U - Double-wall drill rod with detachable inner pipe - Google Patents
Double-wall drill rod with detachable inner pipe Download PDFInfo
- Publication number
- CN203308389U CN203308389U CN2013203766935U CN201320376693U CN203308389U CN 203308389 U CN203308389 U CN 203308389U CN 2013203766935 U CN2013203766935 U CN 2013203766935U CN 201320376693 U CN201320376693 U CN 201320376693U CN 203308389 U CN203308389 U CN 203308389U
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- Prior art keywords
- inner tube
- wall drill
- drill pipe
- double
- pipe
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- Expired - Lifetime
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- 230000006978 adaptation Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 description 7
- 238000005070 sampling Methods 0.000 description 7
- 239000003245 coal Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Abstract
The utility model discloses a double-wall drill rod with a detachable inner pipe. The double-wall drill rod comprises an outer pipe and the inner pipe, wherein an external thread is formed at the upper end of the outer pipe; an internal thread matched with the thread at the upper end is arranged at the lower end of the outer pipe; the inner pipe consists of an inner pipe upper joint, an inner pipe body and a pipe sleeve type inner pipe lower joint which are sequentially in threaded connection with one another, and the pipe sleeve type inner pipe lower joint is matched with the inner pipe upper joint; an inner clamping table is arranged at the upper end of the outer pipe; the upper end face of the inner pipe upper joint extends out of the upper end face of the outer pipe, and a clamping block I matched with the inner clamping table is fixedly arranged on the inner pipe upper joint; a clamping block II for fixing the inner pipe lower joint is fixedly arranged on the inner wall of the lower end of the outer pipe and is close to the internal thread. According to the double-wall drill rod with the detachable inner pipe, an annular gap between the inner pipe and the outer pipe is increased, the flowing resistance is reduced, the manufacturing cost is low, and the drill rod is convenient to maintain.
Description
Technical field
The utility model belongs to the drilling rod field, specifically relates to the dismountable double-wall drill pipe of a kind of inner tube.
Background technology
In the coal mining field, increase along with the coal mining degree of depth, geological condition of coal mine becomes and becomes increasingly complex, boring requirement is more and more darker, requirement to the drilling rod mechanical performance is more and more higher, in order to meet large the pressure of the drill of coal mining, high pulling torque, high pump pressure working condition, existing double-wall drill pipe great majority adopt interior tube body to be welded and fixed and to be in the same place with outer tube body, between the double-wall drill pipe inner tube of this structure and outward appearance, can not dismantle, manufacturing cost is high, maintenance difficult, the double-wall drill pipe annular space is little, flow resistance is large, at the coal mine gas hazard management, take regional control as main in addition, local measure is for supplementing, the Fast Measurement technology of zone gas parameter becomes urgent problem, wherein can be quick, take a sample accurately, sample time can be saved, improve depth selection, and can the Gas Disaster accident, existing double-wall drill pipe can not meet the requirement of the Fast Measurement technology medium-length hole fast sampling of regional gas parameter.
For above-mentioned deficiency, need the dismountable double-wall drill pipe of a kind of new inner tube of research and development, annular space increase, flow resistance reduction, low cost of manufacture and easy to maintenance between the dismountable double-wall drill pipe inner and outer pipe of this inner tube, and it can creep into fast and accurately with deep hole and take a sample, save sample time, improve depth selection, improve colliery sampling operating efficiency and safety, reduce the Gas Disaster accident.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of inner tube dismountable double-wall drill pipe, annular space increase, flow resistance reduction, low cost of manufacture and easy to maintenance between the dismountable double-wall drill pipe inner and outer pipe of this inner tube, and it can creep into fast and accurately with deep hole and take a sample, save sample time, improve depth selection, improve colliery sampling operating efficiency and safety, reduce the Gas Disaster accident.
For achieving the above object, the dismountable double-wall drill pipe of a kind of inner tube of the utility model, comprise outer tube and inner tube, described outer tube upper end is provided with external screw thread, the outer tube bottom is provided with the internal thread with upper end screw thread adaptation, described inner tube is by the inner tube top connection, the inner tube body and with the sleeve type inner tube lower contact of the inner tube top connection adaptation composition that is threaded successively, described outer tube upper end is provided with Nei Katai, described inner tube top connection upper surface is extended in outer tube upper surface and inner tube top connection and is fixedly installed the fixture block I coordinated with Nei Katai, described outer tube bottom is fixedly installed near on the inwall of internal thread the fixture block II that is useful on fixedly inner tube lower contact.
Further, described fixture block I is set to L-type along the axis cross sectional shape.
Further, described fixture block I and fixture block II quantity all are set to 3 and be uniformly distributed.
Further, described inner tube top connection upper surface is less than described inner tube lower contact lower surface to described outer tube lower surface distance to described outer tube upper surface distance.
Further, on described outer tube, be provided with helical blade.
Further, the pitch a of described helical blade is 50-150mm, and helical blade thickness b is 5-30mm, and height h is 3-15mm.
Further, described external screw thread and internal thread are set to apart from shape screw thread or trapezoidal thread.
The beneficial effects of the utility model are:
1, the dismountable double-wall drill pipe of a kind of inner tube of the utility model is by arranging L-type fixture block I and Nei Katai fit structure and fixture block II in order to the fixed support inner tube, make can dismantle between inner and outer tubes, this structure is in the situation that outer tube and inner tube size constancy, between inner and outer pipe, forming annular space increases, flow resistance reduces, make compressed air require and the pressure of double-wall drill pipe output large, thereby can carry out fast the deep hole sampling, save sample time, improve depth selection, improve colliery sampling operating efficiency and safety, reduce the Gas Disaster accident.
2, the dismountable double-wall drill pipe of a kind of inner tube of the utility model can be after inner tube be taken out, and outer tube can be used as and creeps into the drilling rod use, and also hole settles screen casing to use within the outer tube, low cost of manufacture and easy to maintenance.
3, the dismountable double-wall drill pipe of a kind of inner tube of the utility model is by increasing helical blade on the outer tube outer wall of double-wall drill pipe, not only increased the intensity of drilling rod self, and can bring into play preferably the function of deslagging, the drilling construction that makes the dismountable double-wall drill pipe of a kind of inner tube creep into fast and be applied to the complicated geology area, can also process the boring accidents such as collapse hole, armful brill in addition.
The accompanying drawing explanation
Fig. 1 is the sectional view of the dismountable double-wall drill pipe of a kind of inner tube of the utility model;
Fig. 2 is A-A direction sectional view in Fig. 1;
Fig. 3 is B-B direction sectional view in Fig. 1.
Reference numeral: 1-inner tube; The 2-outer tube; The 3-top connection; The 4-body; The 5-helical blade; The 6-lower contact; 7-Nei Katai; 8-fixture block I; 9-fixture block II.
The specific embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
Be illustrated in figure 1 the sectional view of the dismountable double-wall drill pipe of a kind of inner tube of the utility model, be illustrated in figure 2 A-A direction sectional view in Fig. 1, be illustrated in figure 3 B-B direction sectional view in Fig. 1, the dismountable double-wall drill pipe of a kind of inner tube of the utility model comprises outer tube 2 and inner tube 1, described outer tube 2 upper ends are provided with external screw thread, outer tube 2 bottoms are provided with the internal thread with upper end screw thread adaptation, described inner tube 1 is by inner tube top connection 3, inner tube body 4 and with the sleeve type inner tube lower contact 6 of the inner tube top connection 3 adaptations composition that is threaded successively, described outer tube 2 upper ends are provided with interior card platform 7, described inner tube 1 top connection 3 upper surfaces are extended in outer tube 2 upper surfaces and inner tube 1 top connection 3 and are fixedly installed the fixture block I 8 coordinated with interior card platform 7, described outer tube 2 bottoms are fixedly installed near on the inwall of internal thread the fixture block II 9 that is useful on fixedly inner tube lower contact 6.
In the present embodiment, be provided with in inner tube top connection 3 multiple tracks for another part double-wall drill pipe inner tube lower contact between mutually insert the sealing ring that clearance seal coordinates, outer tube 2 upper end external screw threads are threaded with another part double-wall drill pipe middle external tube bottom internal thread, and preferred described external screw thread and internal thread are set to apart from shape screw thread or trapezoidal thread.
Further, preferred described fixture block I 8 is set to L-type along the axis cross sectional shape, and preferred described fixture block I 8 and fixture block II 9 quantity all are set to 3 and be uniformly distributed.
The dismountable double-wall drill pipe of a kind of inner tube of the present embodiment is by arranging L-type fixture block I 8 and Nei Ka platform 7 fit structures and fixture block II 9 in order to fixed support inner tube 1, make can dismantle between inner tube 1 and outer tube 2, this structure is in the situation that outer tube 2 and inner tube 1 size constancy, between inner and outer pipe, forming annular space increases, flow resistance reduces, make compressed air require and the pressure of double-wall drill pipe output large, thereby can carry out fast the deep hole sampling, save sample time, improve depth selection, improve colliery sampling operating efficiency and safety, reduce the Gas Disaster accident.
Further, described inner tube top connection 3 upper surfaces are less than described inner tube lower contact 6 lower surfaces to described outer tube 2 lower surface distances to described outer tube 2 upper surface distances, this structure can guarantee that it is that after outer tube first was screwed into certain depth, inner tube was just inserted mutually that the interior double-wall drill pipe of beam is connected, to guarantee the reliability of inner and outer tubes sealing.
Further, on described outer tube 2, be provided with helical blade 5, helical blade 5 is by being welded on outer tube 2 outer walls, the pitch a of preferred described helical blade 5 is 50-150mm, helical blade 5 thickness b are 5-30mm, height h is 3-15mm, further, , the dismountable double-wall drill pipe of a kind of inner tube of the present embodiment is by increasing helical blade on the outer tube outer wall of double-wall drill pipe, not only increased the intensity of drilling rod self, and can bring into play preferably the function of deslagging, make the dismountable double-wall drill pipe of a kind of inner tube can be applied to preferably the drilling construction in complicated geology area, more easily process collapse hole, embrace the boring accidents such as brill.
Finally explanation is, above preferred embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can to it, make various changes in the form and details, and not depart from the utility model claims limited range.
Claims (7)
1. dismountable double-wall drill pipe of inner tube, comprise outer tube and inner tube, it is characterized in that: described outer tube upper end is provided with external screw thread, the outer tube bottom is provided with the internal thread with upper end screw thread adaptation, described inner tube is by the inner tube top connection, the inner tube body and with the sleeve type inner tube lower contact of the inner tube top connection adaptation composition that is threaded successively, described outer tube upper end is provided with Nei Katai, described inner tube top connection upper surface is extended in outer tube upper surface and inner tube top connection and is fixedly installed the fixture block I coordinated with Nei Katai, described outer tube bottom is fixedly installed near on the inwall of internal thread the fixture block II that is useful on fixedly inner tube lower contact.
2. the dismountable double-wall drill pipe of a kind of inner tube as claimed in claim 1, it is characterized in that: described fixture block I is set to L-type along the axis cross sectional shape.
3. the dismountable double-wall drill pipe of a kind of inner tube as claimed in claim 2 is characterized in that: described fixture block I and fixture block II quantity all are set to 3 and be uniformly distributed.
4. the dismountable double-wall drill pipe of a kind of inner tube as claimed in claim 3 is characterized in that: described inner tube top connection upper surface is less than described inner tube lower contact lower surface to described outer tube lower surface distance to described outer tube upper surface distance.
5. the dismountable double-wall drill pipe of a kind of inner tube as described as claim 1-4, is characterized in that: be provided with helical blade on described outer tube.
6. the dismountable double-wall drill pipe of a kind of inner tube as claimed in claim 5, it is characterized in that: the pitch a of described helical blade is 50-150mm, and helical blade thickness b is 5-30mm, and height h is 3-15mm.
7. the dismountable double-wall drill pipe of a kind of inner tube as claimed in claim 6, it is characterized in that: described external screw thread and internal thread are set to apart from shape screw thread or trapezoidal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203766935U CN203308389U (en) | 2013-06-27 | 2013-06-27 | Double-wall drill rod with detachable inner pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203766935U CN203308389U (en) | 2013-06-27 | 2013-06-27 | Double-wall drill rod with detachable inner pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203308389U true CN203308389U (en) | 2013-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203766935U Expired - Lifetime CN203308389U (en) | 2013-06-27 | 2013-06-27 | Double-wall drill rod with detachable inner pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203308389U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295245A (en) * | 2014-11-01 | 2015-01-21 | 郑州神利达钻采设备有限公司 | Embedded double-body drill stem |
| CN105089521A (en) * | 2015-08-27 | 2015-11-25 | 淮北矿业（集团）勘探工程有限责任公司 | Large-drift-diameter auger stem |
| CN106194045A (en) * | 2016-09-21 | 2016-12-07 | 库尔勒施得石油技术服务有限公司 | Drilling rod |
| CN106869783A (en) * | 2017-03-08 | 2017-06-20 | 李海兰 | The squelch type that a kind of civic building engineering is used quickly makes a device |
| CN109030076A (en) * | 2018-08-20 | 2018-12-18 | 浙江大学 | A kind of de- pipe device of gas hydrates Sampling driller |
| CN113756730A (en) * | 2021-07-02 | 2021-12-07 | 河南理工大学 | Spiral drill rod for circumferential flow supply shield protection pressure relief sieve pore of outburst coal seam |
-
2013
- 2013-06-27 CN CN2013203766935U patent/CN203308389U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295245A (en) * | 2014-11-01 | 2015-01-21 | 郑州神利达钻采设备有限公司 | Embedded double-body drill stem |
| CN105089521A (en) * | 2015-08-27 | 2015-11-25 | 淮北矿业（集团）勘探工程有限责任公司 | Large-drift-diameter auger stem |
| CN106194045A (en) * | 2016-09-21 | 2016-12-07 | 库尔勒施得石油技术服务有限公司 | Drilling rod |
| CN106194045B (en) * | 2016-09-21 | 2019-01-18 | 库尔勒施得石油技术服务有限公司 | Drilling rod |
| CN106869783A (en) * | 2017-03-08 | 2017-06-20 | 李海兰 | The squelch type that a kind of civic building engineering is used quickly makes a device |
| CN109030076A (en) * | 2018-08-20 | 2018-12-18 | 浙江大学 | A kind of de- pipe device of gas hydrates Sampling driller |
| CN109030076B (en) * | 2018-08-20 | 2020-05-22 | 浙江大学 | Pipe-removing device of natural gas hydrate sampling drilling tool |
| CN113756730A (en) * | 2021-07-02 | 2021-12-07 | 河南理工大学 | Spiral drill rod for circumferential flow supply shield protection pressure relief sieve pore of outburst coal seam |
| CN113756730B (en) * | 2021-07-02 | 2023-10-27 | 河南理工大学 | Spiral drill rod with protruding coal seam circumference flow supply shield pressure relief sieve holes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA COAL TECHNOLOGY ENGINEERING GROUP CHONGQING Free format text: FORMER NAME: CHINA COAL SCIENCE AND INDUSTRY GROUP CHONGQING RESEARCH INSTITUTE |
|
| CP03 | Change of name, title or address |
Address after: 400039 Chongqing Jiulongpo Branch City Road No. 6 Patentee after: CCTEG CHONGQING RESEARCH INSTITUTE Co.,Ltd. Address before: 400039 Chongqing Jiulongpo Erlang Branch City Road No. 6 Patentee before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |