CN206190229U - Double shoulder outer threaded pipe connector with stress slows down structure - Google Patents
Double shoulder outer threaded pipe connector with stress slows down structure Download PDFInfo
- Publication number
- CN206190229U CN206190229U CN201621270555.9U CN201621270555U CN206190229U CN 206190229 U CN206190229 U CN 206190229U CN 201621270555 U CN201621270555 U CN 201621270555U CN 206190229 U CN206190229 U CN 206190229U
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- CN
- China
- Prior art keywords
- annular groove
- pipe connector
- threaded pipe
- outer threaded
- stress
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- 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.)
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Abstract
The utility model discloses a double shoulder outer threaded pipe connector with stress slows down structure, stress slows down the annular groove that the structure is provided in a side of tapering external screw thread main aspects root, and on the recessed tapering external screw thread main aspects root side end face of this annular groove axial, the annular groove the transversal C that personally submits appear. The advantage of the annular groove of this structure does not reduce double shoulder outer threaded pipe connector radial dimension, therefore this section cross sectional area is unchangeable, can ensure double shoulder outer threaded pipe connector radial dimension, therefore this section cross sectional area is unchangeable, can ensure that double shoulder outer threaded pipe connector still keeps original outer threaded pipe connector 0. When taking place the moment of torsion among the drilling process once in a while and exceeding standard, the stress that brings slows down groove release through stress, can avoid taking place crackle or broken rod accident like this.
Description
Technical field
The utility model is related to a kind of pipe joint, and specifically, the utility model is related to a kind of pipe of oil drill rocker configuration
Joint, is especially provided with the dual stage shoulder male connector of stress relief feature.
Background technology
Drilling rod is one of main drilling tool of oil drilling, and its structure design and workmanship directly determine drilling quality.When
The petroleum resources on modern land superficial stratum are increasingly exhausted, and in order to seek more petroleum resources, on the one hand various countries increase probing
Depth, on the other hand opens up offshore oil drilling, that is to say, that oil drilling depth is more and more deeper from now on.Due to drilling depth plus
Deeply, it is necessary to being equipped with adaptable high strength petroleum drilling rod could meet drilling well demand.For market active demand, the industry is from two
Individual aspect set about develop high-strength drill pipe, one be strengthen high strength alloy steel development, be on the other hand Optimal Structure Designing and
Process modification.Target had been basically reached by researching and developing in recent years.Oil drill rocker key position is the pipe for being located at body of rod two ends
Joint, removes raw material and heat treatment factor.Its structure directly affects the antitorque and sealing property of drilling rod.Commercially available high-strength drill pipe
The dual stage shoulder male connector of configuration is rational in infrastructure, anti-twisting property is strong, good sealing effect, disclosure satisfy that deep-well or offshore oil
The demand of drilling well.But, when ultradeep well is drilled, because two ends of drill pipe joint bears limiting value moment of torsion for a long time, structure in addition
In lack stress relief channel, easily there is micro-crack in the big end root of male connector, even there is disconnected bar under special operation condition
Accident.Disconnected bar belongs to the major accident of oil drilling, and its economic loss is huge, and the responsibility of related side can be investigated when the time comes.
Utility model content
The utility model is also easy to produce asking for micro-crack mainly for the big end root of prior art dual stage shoulder male connector
Topic, proposes a kind of dual stage shoulder male connector for being provided with stress relief feature, and the pipe joint structure is simple, position reasonable, system
Work is easy, can significantly slow stress generation.
The utility model is achieved through the following technical solutions technical goal.
The dual stage shoulder male connector of stress relief feature is provided with, the stress relief feature is to be located at taper external screw thread
The annular groove of big end root.It is theed improvement is that：The annular groove is axially concaved the big end root side of taper external screw thread
On face, annular groove cross section is C-shaped, slot opening 4~6mm wide, and groove inner arc side is cylindrical with the big end root of taper external screw thread
It is tangent.
As further improvement project, the annular groove cross section cut open for the C-shaped of semicircle shape or along long axis half
Ellipticity C-shaped.
The utility model compared with prior art, has the positive effect that：
1st, annular groove is set on the side end face of taper external screw thread big end root, this simple structure, handling ease；
2nd, the annular groove set up is axially concaved taper external screw thread big end root side end face, and this kind of side setting structure is closed
Reason, dual stage shoulder male connector radial dimension is not reduced, therefore this section of area of section is constant, it can be ensured that dual stage shoulder external screw thread
Pipe joint remains in that original torsional strength, occur once in a while in drilling process moment of torsion it is exceeded when, the stress for bringing is subtracted by stress
Slow groove release, can avoid crackle or disconnected bar accident；
3rd, the annular groove set up is located at the end face gap that taper male connection is docked with taper female adapter, matches somebody with somebody
To not changing original sealing property after installation.
Brief description of the drawings
Fig. 1 is the utility model structure half-section diagram.
Fig. 2 is Figure 1A partial enlarged drawings.
Fig. 3 is the taper female union structure half-section diagram being engaged with Fig. 1.
Fig. 4 is the structure half-section diagram that Fig. 1 is engaged with Fig. 3.
Fig. 5 is the jackrod structure schematic diagram of component shown in application drawing 1 and Fig. 2.
Specific embodiment
Below according to accompanying drawing and in conjunction with the embodiments, the utility model is described in further detail.
Fig. 1 is provided with the dual stage shoulder male connector embodiment schematic diagram of stress relief feature, the supporting φ of the present embodiment
The heavy weight drill pipe of 180mm.The stress relief feature is located at the big end root of taper external screw thread of dual stage shoulder male connector, it
It is an annular groove, the annular groove shaped and position are as shown in Figure 2.The annular groove that the utility model is set up is maximum
Architectural feature is axially concaved on the side end face of taper external screw thread big end root, and the cross section of the present embodiment annular groove is semicircle shape
C-shaped, slot opening 6mm wide, groove inner arc side is tangent with the big end root of taper external screw thread.The annular groove maximum of this structure is good
Place is not reduce dual stage shoulder male connector radial dimension, therefore this section of area of section is constant, it can be ensured that the outer spiral shell of dual stage shoulder
Line pipe joint remains in that original torsional strength, occur once in a while in drilling process moment of torsion it is exceeded when, the stress for bringing pass through stress
Slow down groove release, can so avoid micro-crack or disconnected bar accident.In addition, the annular groove set up connects positioned at taper external screw thread
The end face gap that head is docked with taper female adapter, original sealing property is not changed after mounted in pairing mode.
The utility model is a kind of dual stage shoulder male connector as shown in Figure 1, its dual stage shoulder taper shown in Fig. 3
Female union is supporting, and two pieces is as shown in Figure 4 after screwing.During practical application, component shown in Fig. 1 and Fig. 3 is welded to bar
Body two ends, constitute drilling rod as shown in Figure 5.
Claims (3)
1. a kind of dual stage shoulder male connector for being provided with stress relief feature, the stress relief feature is to be located at the outer spiral shell of taper
The annular groove of the big end root of line；It is characterized in that：The annular groove is axially concaved taper external screw thread big end root side end face
On, annular groove cross section is C-shaped, slot opening 4~6mm wide, groove inner arc side and the big cylindrical phase in end root of taper external screw thread
Cut.
2. the dual stage shoulder male connector for being provided with stress relief feature according to claim 1, it is characterised in that：It is described
Annular groove cross section is the C-shaped of semicircle shape.
3. the dual stage shoulder male connector for being provided with stress relief feature according to claim 1, it is characterised in that：It is described
Annular groove cross section is the half ellipticity C-shaped cut open along major axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621270555.9U CN206190229U (en) | 2016-11-25 | 2016-11-25 | Double shoulder outer threaded pipe connector with stress slows down structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621270555.9U CN206190229U (en) | 2016-11-25 | 2016-11-25 | Double shoulder outer threaded pipe connector with stress slows down structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206190229U true CN206190229U (en) | 2017-05-24 |
Family
ID=58723922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621270555.9U Active CN206190229U (en) | 2016-11-25 | 2016-11-25 | Double shoulder outer threaded pipe connector with stress slows down structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206190229U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437553A (en) * | 2016-11-25 | 2017-02-22 | 江苏曙光华阳钻具有限公司 | Double-shoulder outer-thread pipe joint with stress retarding structure |
-
2016
- 2016-11-25 CN CN201621270555.9U patent/CN206190229U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437553A (en) * | 2016-11-25 | 2017-02-22 | 江苏曙光华阳钻具有限公司 | Double-shoulder outer-thread pipe joint with stress retarding structure |
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