CN220415285U - Variable-cone thread double-shoulder drill rod joint - Google Patents
Variable-cone thread double-shoulder drill rod joint Download PDFInfo
- Publication number
- CN220415285U CN220415285U CN202321721365.4U CN202321721365U CN220415285U CN 220415285 U CN220415285 U CN 220415285U CN 202321721365 U CN202321721365 U CN 202321721365U CN 220415285 U CN220415285 U CN 220415285U
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- drill rod
- joint
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- male
- connector
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- 238000005553 drilling Methods 0.000 claims abstract description 24
- 239000011295 pitch Substances 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000004026 adhesive bonding Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000008961 swelling Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model provides a variable-cone threaded double-shoulder drill rod joint, which belongs to the technical field of petroleum drilling equipment and comprises a first drill rod, wherein a second drill rod is arranged on the upper side of the first drill rod, male joints are fixedly connected to the bottom ends of the first drill rod and the second drill rod respectively, and the purpose of the utility model is to provide a drill rod joint in a double-cone connection mode, which can bear larger torque, has longer service life and better sealing effect and is used for underground drilling. The total thread number of the drill rod joint is reduced, the number of the screwing turns is about 5 and half, the screwing and unscrewing efficiency is obviously improved, and the production and processing efficiency is high; the drill rod joint is characterized in that two shoulder surfaces and two conical surfaces are respectively arranged on the male threaded joint and the female threaded joint, the drill rods are connected by adopting conical threads, the torsional strength and fatigue strength of the drill rod joint are greatly improved, and risks of thread gluing, swelling of the female threaded joint, fracture of the male threaded joint and the like are reduced.
Description
Technical Field
The utility model belongs to the technical field of petroleum drilling equipment, and particularly relates to a variable-cone thread double-shoulder drill pipe joint.
Background
The drill rod for drilling is manufactured according to the API standard and has a structure that a male joint and a female joint are butt welded at two ends of the drill rod, wherein the male joint is provided with external threads, and the female joint is provided with internal threads. The traditional male connector is provided with an outer shoulder, while the female connector is not provided with a shoulder, but is provided with an inner inclined surface, and failure accidents such as expansion of the female connector and external thread breakage of the male connector can occur when large torque is encountered in the actual use process. In order to solve the problem of low torsional strength of the connector, a person skilled in the art generally changes the inner inclined plane of the female connector into a radial inner shoulder, so that the outer end face of the male connector contacts with the inner shoulder to form additional friction moment, thereby improving the torsional performance of the connector. The joint employing such a double shoulder structure can improve the torsional strength of the joint but cannot provide good air-tightness. In the in-service use process, after the male joint and the female joint are screwed, gaps are still reserved at the joint of the male joint and the female joint, so that the leakage of a drill rod connecting part is easy to cause, liquid flows to a threaded surface for connection, poor connectivity can be caused, a large amount of liquid leakage or the disconnection of a drill rod can be possibly caused, and finally the overall working efficiency is low.
The authorized bulletin number CN211900503U records a double-shoulder high-sealing threaded drill rod joint, which comprises a main pipe body, wherein male joints and female joints are arranged at the left end and the right end of the main pipe body, the middle part of the main pipe body is connected with an extrusion sleeve through a spring, an external thread is meshed with an internal thread, the right root part of the external thread is provided with a first main shoulder surface, the left end of the internal thread is provided with a second main shoulder surface and is in sealing fit with the second main shoulder surface, the second main shoulder surface is attached with the end surface of the extrusion sleeve, the left root part of the external thread is provided with a first auxiliary shoulder surface, the right root part of the internal thread is provided with a second auxiliary shoulder surface, and the first auxiliary shoulder surface is in sealing fit with the second auxiliary shoulder surface. According to the utility model, the extrusion sleeve is sleeved on the male connector, and extrusion force is generated through the elastic action of the spring, so that the cooperation of the extrusion sleeve and the female connector is fastened, the sealing cooperation of the male connector and the female connector is further enhanced, the leakage of a drill rod connecting part is avoided, and the integral working efficiency of the drill rod connector is ensured.
Above-mentioned patent establishes the extrusion cover on the pin joint, is to remove the extrusion force through the elastic action of spring to the cooperation of extrusion cover and female joint has been fastened, further strengthens the sealed cooperation of pin joint and female joint, thereby avoided the drilling rod connecting component seepage, guaranteed the holistic work efficiency of drilling rod joint, but above-mentioned patent exists certain defect when using, and drilling rod joint can not bear great moment of torsion, and drilling rod joint department leakproofness is poor, and torsional strength and fatigue strength are lower, and long-term work uses female thread joint to swell easily, and risk such as male thread joint fracture easily is extremely low, very influences drilling in the pit.
Disclosure of Invention
The utility model aims to provide a variable-cone thread double-shoulder drill rod joint, and aims to solve the problems that the drill rod joint in the prior art cannot bear larger torque, the sealing performance of the drill rod joint is poor, the torsional strength and the fatigue strength are low, the female thread joint is easy to expand when being used for a long time, the male thread joint is easy to break and the like, the service life is extremely low, and underground drilling is extremely influenced.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a tapered thread double shoulder drill pipe joint comprising:
the drilling device comprises a first drill rod, a second drill rod, a male connector, a first connecting rod, a second connecting rod, a first connecting rod and a second connecting rod, wherein the second drill rod is arranged on the upper side of the first drill rod, the male connectors are fixedly connected to the bottom ends of the first drill rod and the second drill rod respectively, and two outer diameter inclined planes are respectively arranged on the circumferential surfaces of the first drill rod and the second drill rod; and
the female joint is provided with two female joints, the two female joints are respectively fixed on the top ends of the first drill rod and the second drill rod, and shoulder surfaces are arranged in the two female joints.
As a preferable scheme of the utility model, the taper of the front sections of the threads of the two male connectors is 1:6, the taper of the rear sections of the two male connectors is 1:16, the taper of the front sections of the threads of the two female connectors is 1:16, and the taper of the rear sections of the two female connectors is 1:6.
As a preferable scheme of the utility model, the male connector and the female connector adopt V038 thread teeth, the tooth heights of the male connector and the female connector are 3.095mm, and the thread pitches of the male connector and the female connector are 6.35mm.
As a preferred embodiment of the utility model, the dimensional tolerance of the pin and box ranges from (-0.05 mm, +0.05) mm.
As a preferable scheme of the utility model, the outer diameters of the inclined surface peaks of the two outer diameter inclined surfaces are not smaller than
As a preferable scheme of the utility model, transition sections are arranged in the two female connectors.
Compared with the prior art, the utility model has the beneficial effects that:
in this scheme, the thread circle digit through female joint and pin joint is 5 circles and half, make follow-up more convenient when dismantling the installation, in order to show the efficiency that unloads the drill bit on improving, and the efficiency of production processing can be improved, the shoulder surface of bipyramid handing-over department is programmed for the numerical control and is processed, be provided with two conical surfaces on pin joint and the female joint respectively, two conical surfaces match with two shoulder surfaces, at one of them pin joint and one of them female joint assorted, one of them pin joint screw thread is located one of them female joint, pin joint and female joint all are the toper, through the data of pin joint and female joint self, can make when manufacturing, be equivalent to the tolerance, all can within plus 0.05mm in the upper limit specification, lower limit specification minus tolerance 0.05mm, can make the tool joint and female joint more stable when connecting through V038 die.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is a first perspective cutaway perspective view of the present utility model;
FIG. 3 is an enlarged view of a portion of the utility model at A of FIG. 2;
fig. 4 is an exploded perspective view of the first perspective of the present utility model.
In the figure: 1. a first drill pipe; 2. a second drill rod; 3. an outer diameter bevel; 4. a male connector; 5. a female joint; 6. a transition section; 7. a shoulder surface.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1-4, the present utility model provides the following technical solutions:
a tapered thread double shoulder drill pipe joint comprising:
the drilling device comprises a first drill rod 1, a second drill rod 2 is arranged on the upper side of the first drill rod 1, male connectors 4 are fixedly connected to the bottom ends of the first drill rod 1 and the second drill rod 2 respectively, and two outer diameter inclined planes 3 are arranged on the circumferential surfaces of the first drill rod 1 and the second drill rod 2 respectively; and
the female joint 5, female joint 5 are equipped with two, and two female joints 5 are fixed in the top of first drilling rod 1 and second drilling rod 2 respectively, all are equipped with shoulder surface 7 in two female joints 5.
In the specific embodiment of the utility model, the sizes of the first drill rod 1 and the second drill rod 2 are consistent, two female connectors 5 and two male connectors 4 are respectively distributed at the upper end and the lower end of the first drill rod 1 and the second drill rod 2, the circumferential inner wall of each female connector 5 is provided with threads, the outer surface of each male connector 4 is provided with threads, the number of the thread rings of each female connector 5 and each male connector 4 is 5 and half, the subsequent disassembly and assembly are more convenient, the efficiency of the bit loading and unloading is obviously improved, the production and processing efficiency is improved, the shoulder surface 7 at the joint of the double cones is processed by numerical control programming, two conical surfaces are respectively arranged on each male connector 4 and each female connector 5, the two conical surfaces are matched with the two shoulder surfaces 7, one male connector 4 is matched with one female connector 5, and one male connector 4 is threaded in one female connector 5, and each male connector 4 and each female connector 5 are conical.
Referring to fig. 1-4 specifically, the taper of the front thread sections of the two pin connectors 4 is 1:6, the taper of the rear thread sections of the two pin connectors 4 is 1:16, the taper of the front thread sections of the two box connectors 5 is 1:16, and the taper of the rear thread sections of the two box connectors 5 is 1:6.
In this embodiment: the data through the male connector 4 and the female connector 5 enables the shock absorption to be more convenient and rapid in subsequent manufacturing.
Referring to fig. 1-4 specifically, the threads of the two male connectors 4 and the two female connectors 5 are V038 thread profiles, the tooth heights of the two male connectors 4 and the two female connectors 5 are 3.095mm, and the thread pitches of the two male connectors 4 and the two female connectors 5 are 6.35mm.
In this embodiment: the pin 4 and the box 5 can be made more stable when making a connection by V038 thread profile (tooth height 3.095mm pitch 6.35 mm).
Referring specifically to fig. 2, the dimensional tolerance ranges of the two male connectors 4 and the two female connectors 5 are (-0.05, +0.05) mm.
In this embodiment: the data of the male connector 4 and the female connector 5 can lead the tolerance to be equivalent to the allowable error in the production and manufacture process, namely, the tolerance is added by the upper limit specification and the tolerance is 0.05mm on the basis of the standard value, the tolerance is subtracted by the lower limit specification and the tolerance is 0.05mm, and the male connector 4 and the female connector 5 can be more stable in connection through the V038 tooth height 3.095mm pitch 6.35mm.
Referring to fig. 1-4, the outer diameters of the inclined surface peaks of the two outer diameter inclined surfaces 3 are not smaller than
In this embodiment: by means of the data of the outer diameter bevel 3 itself, the effective surface area of the sealing surface can be ensured.
Referring to fig. 3 specifically, a transition section 6 is disposed in each of the two female connectors 5.
In this embodiment: a clearance may be provided for the threaded connection of the male connector 4 into the female connector 5 by means of the transition piece 6.
The working principle and the using flow of the utility model are as follows: the number of the thread rings of the female connector 5 and the male connector 4 is 5, so that the subsequent disassembly and installation are more convenient, the efficiency of the drill bit is obviously improved, the production and machining efficiency is improved, the shoulder surface 7 at the double-cone junction is processed by numerical control programming, two conical surfaces are respectively arranged on the male connector 4 and the female connector 5, the two conical surfaces are matched with the two shoulder surfaces 7, one male connector 4 is matched with the other female connector 5, the male connector 4 and the female connector 5 are tapered in one female connector 5 of the threads of the male connector 4, the data of the male connector 4 and the female connector 5 are adopted, the allowable error is equivalent to within the tolerance range (-0.05, +0.05) mm in production and manufacture, namely, the tolerance is increased by 0.05mm in the upper limit specification, the tolerance is reduced by 0.05mm in the lower limit specification, and the male connector 4 and the female connector 5 are more stable in connection through the pitch of the thread pitch of 3.095mm of V038. The drill rods are connected through the taper threads, so that the torsional strength and fatigue strength of the drill rod connector are greatly improved, and risks of thread gluing, swelling of the female threaded connector, fracture of the male threaded connector and the like are reduced.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. Become two circular bead drill rod joints of awl screw thread, its characterized in that includes:
the drilling device comprises a first drilling rod (1), wherein a second drilling rod (2) is arranged on the upper side of the first drilling rod (1), male connectors (4) are fixedly connected to the bottom ends of the first drilling rod (1) and the second drilling rod (2) respectively, and two outer diameter inclined planes (3) are respectively arranged on the circumferential surfaces of the first drilling rod (1) and the second drilling rod (2); and
the female joint (5), female joint (5) are equipped with two, two female joint (5) are fixed in the top of first drilling rod (1) and second drilling rod (2) respectively, two female joint (5) are interior all to be equipped with shoulder surface (7).
2. The tapered threaded double shoulder drill pipe joint of claim 1, wherein: the taper of the front sections of the threads of the two male connectors (4) is 1:6, the taper of the rear sections of the two male connectors (4) is 1:16, the taper of the front sections of the threads of the two female connectors (5) is 1:16, and the taper of the rear sections of the two female connectors (5) is 1:6.
3. The tapered threaded double shoulder drill pipe joint of claim 2, wherein: the threads of the male connector (4) and the female connector (5) are V038 thread teeth, the tooth heights of the male connector (4) and the female connector (5) are 3.095mm, and the thread pitches of the male connector (4) and the female connector (5) are 6.35mm.
4. A tapered thread double shoulder drill pipe joint as claimed in claim 3, wherein: the dimensional tolerance ranges of the male connector (4) and the female connector (5) are (-0.05, +0.05) mm.
5. The tapered threaded double shoulder drill pipe joint of claim 4, wherein: the outer diameters of the inclined surface peaks of the two outer diameter inclined surfaces (3) are not smaller than
6. The tapered threaded double shoulder drill pipe joint of claim 5, wherein: transition sections (6) are arranged in the two female connectors (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321721365.4U CN220415285U (en) | 2023-07-03 | 2023-07-03 | Variable-cone thread double-shoulder drill rod joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321721365.4U CN220415285U (en) | 2023-07-03 | 2023-07-03 | Variable-cone thread double-shoulder drill rod joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220415285U true CN220415285U (en) | 2024-01-30 |
Family
ID=89652254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321721365.4U Active CN220415285U (en) | 2023-07-03 | 2023-07-03 | Variable-cone thread double-shoulder drill rod joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220415285U (en) |
-
2023
- 2023-07-03 CN CN202321721365.4U patent/CN220415285U/en active Active
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