CN209129545U - Oil pipe thread connector - Google Patents
Oil pipe thread connector Download PDFInfo
- Publication number
- CN209129545U CN209129545U CN201821959661.7U CN201821959661U CN209129545U CN 209129545 U CN209129545 U CN 209129545U CN 201821959661 U CN201821959661 U CN 201821959661U CN 209129545 U CN209129545 U CN 209129545U
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- thread
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- angle
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Abstract
The utility model provides a kind of oil pipe thread connector, it include: male screw portion, it is formed in one end of the first tubular part, the male screw portion has the male thread in cone line variation, the male thread has multiple male thread teeth, and the loading end angle of the guide surface angle of the male thread tooth and the male thread tooth is negative angle；Box thread portion, it is formed in one end of the second tubular part, the box thread portion has in the cone line variation and box thread that can match with the male thread, and the box thread has multiple box thread teeth, and the loading end angle of the guide surface angle of the box thread tooth and the box thread tooth is negative angle.The oil pipe thread connector of the utility model can satisfy and use in deep-well, the longer well of horizontal segment, and the anti-compression properties of the oil pipe thread connector are relatively reliable, can evade the risk that compression failure easily occur in conventional threads.
Description
Technical field
The utility model relates to oil field drilling development technique field more particularly to a kind of Varied pole piece and groove width screw pitch are constant
Oil pipe thread connector.
Background technique
With the high speed development of national economy, China is also being continuously increased the demand of petroleum, the drilling exploitation in oil field
Speed is even more to be getting faster, and development difficulty is increasing, with the development of drilling well Xiang Gengshen, the longer casing programme of horizontal segment,
Since the increase that petroleum pipeline grinds resistance when entering well puts forward higher requirements oil pipe thread, still, traditional oil pipe thread
Connector, since incompressible intensity is low, deep-well, horizontal segment length well in, due to mill resistance increase, easily there are the feelings of compression failure
Condition.
Utility model content
The purpose of the utility model is to provide a kind of oil pipe thread connectors, can satisfy longer in deep-well, horizontal segment
It is used in well, the anti-compression properties of the oil pipe thread connector are relatively reliable, can evade conventional threads and compression failure easily occur
Risk.
Following technical proposal can be used to realize in the above-mentioned purpose of the utility model:
The utility model provides a kind of oil pipe thread connector, comprising:
Male screw portion is formed in one end of the first tubular part, and the male screw portion has the male thread in cone line variation,
The male thread has multiple male thread teeth, the loading end angle of the guide surface angle of the male thread tooth and the male thread tooth
It is negative angle；
Box thread portion, is formed in one end of the second tubular part, and the box thread portion has in cone line variation and can be with
The box thread that the male thread matches, the box thread have multiple box thread teeth, the guide surface angle of the box thread tooth
Loading end angle with the box thread tooth is negative angle.
In the embodiments of the present invention, the outer end of the male screw portion is formed with outer braking shoulder, mother's spiral shell
The inner end in line portion is formed with interior braking shoulder, in the state that the male screw portion is engaged with the box thread portion, the outer system
Dynamic shoulder is contacted with the interior braking shoulder.
In the embodiments of the present invention, external seal is formed between the male thread and the outer braking shoulder
Circular arc is formed with interior sealing circular arc between the box thread and the interior braking shoulder, in the male screw portion and the mother
In the state of the engagement of threaded portion, the external seal circular arc is contacted with the interior sealing circular arc.
In the embodiments of the present invention, escape is formed between the box thread and the interior sealing circular arc.
In the embodiments of the present invention, the carrying of the guide surface angle of the male thread tooth and the male thread tooth
Face angle degree is identical；The guide surface angle of the box thread tooth is identical with the loading end angle of the box thread tooth.
In the embodiments of the present invention, the carrying of the guide surface angle of the male thread tooth and the male thread tooth
Face angle degree is -2 °~-5 °；The guide surface angle of the box thread tooth and the loading end angle of the box thread tooth are -2 °
~-5 °.
In the embodiments of the present invention, from one end of the male screw portion to the other end of the male screw portion,
The tooth width of each male thread tooth gradually decreases, and the groove width between the adjacent male thread tooth gradually increases two-by-two.
In the embodiments of the present invention, the other end from one end to the box thread portion in the box thread portion,
The tooth of each box thread tooth is wide gradually to subtract increase, and the groove width between the adjacent box thread tooth gradually decreases two-by-two.
In the embodiments of the present invention, the wide variable quantity of the tooth is 0.05mm~0.2mm, the change of the groove width
Change amount is 0.05mm~0.2mm.
In the embodiments of the present invention, the tilt angle of the outer braking shoulder is -12 °~-15 °.
The characteristics of oil pipe thread connector of the utility model and advantage are:
1, the oil pipe thread connector of the utility model, the guide surface and loading end of each male thread tooth of male screw portion are equal
It is barb-shaped to be designed as negative angle, meanwhile, the guide surface and loading end of each box thread tooth in the box thread portion are also both designed as negative angle
It is barb-shaped so that the oil pipe thread connector can effectively improve the anti-compression properties of screw thread, effectively prevent thread failure and
It slips.
2, the utility model is used using variable tooth wide and groove width, and the structure design that screw pitch is constant, makes the stress of each tooth
Unanimously, the resistance to compression of the oil pipe thread connector is increased to 95% or more by the 40%~60% of conventional petroleum pipe screw thread.
3, the utility model is contacted using the outer braking shoulder of male screw portion and the interior braking shoulder in box thread portion, and
It is contacted using the external seal circular arc of male screw portion and the interior sealing circular arc in box thread portion, and using the guide surface of male thread tooth
It contacts with the guide surface of box thread tooth, while being contacted using the loading end of the loading end and box thread tooth of male thread tooth
Quadruple design of Sealing Structure, the sealing performance of oil pipe thread connector has been effectively ensured.
4, the angle of the outer braking shoulder of the utility model setting is -12 °~-15 °, not only acts as button in control and tightens position
Effect, and effectively increase the ability that twisting strain is crossed in end face, improve the comprehensive performance of oil pipe thread connector, guarantee stone
The integrality of oil pipe threaded connector.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the oil pipe thread connector of the utility model.
Fig. 2 is the portion the A enlarged drawing of Fig. 1.
Fig. 3 is the portion the B enlarged drawing of Fig. 1.
Fig. 4 is the schematic diagram that the male thread of the oil pipe thread connector of the utility model is engaged with box thread.
Drawing reference numeral explanation: 1, male screw portion；10, the first tubular part；11, male thread；111, male thread tooth；1111,
Guide surface；1112, loading end；112, male thread slot；113, outer braking shoulder；114, external seal circular arc；2, box thread portion；20,
Second tubular part；21, box thread；211, box thread tooth；2111, guide surface；2112, loading end；212, box thread slot；213,
Interior braking shoulder；214, interior sealing circular arc；215, escape；216, smooth internal walls transition face；θ1, guide surface angle；θ2, carrying
Face angle degree；δ1, guide surface angle；δ2, loading end angle；Fa, groove width；Fb, tooth are wide；L, screw pitch；F1, direction；F2, direction.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, the utility model provides a kind of oil pipe thread connector, including male screw portion 1 and box thread portion
2, in which: male screw portion 1 is formed in one end of the first tubular part 10, and the male screw portion 1 has the public spiral shell in cone line variation
Line 11, the male thread 11 have multiple male thread teeth 111, the guide surface angle, θ of the male thread tooth 1111With the public spiral shell
The loading end angle, θ of line tooth 1112It is negative angle；Box thread portion 2 is formed in one end of the second tubular part 20, the box thread
Portion 2 has box thread 21 that is in cone line variation and can matching with the male thread 11, and the box thread 21 has multiple mothers
Thread 211, the guide surface angle δ of the box thread tooth 2111With the loading end angle δ of the box thread tooth 2112It is negative
Angle.
Specifically, the oil pipe thread connector is by the male screw portion 1 and the second tubular part 20 on the first tubular part 10
On box thread portion 2 be threadedly coupled composition, in the present embodiment, which can be the tube body of petroleum pipeline, this
Two tubular parts 20 can be box cupling.The oil pipe thread connector using elastic packing cooperate, also as metal interference sealing shape
Formula, so as to be put forward higher requirements to machining accuracy, moment of torsion control.
There is the male thread 11 in cone line variation, that is, the male thread 11 is from male screw portion 1 in the male screw portion 1
The direction F1 to the outer end of male screw portion 1 is held radially-inwardly to reduce；There are multiple male thread teeth 111, two-by-two in the male screw portion 1
Male thread slot 112 is formed between adjacent male thread tooth 111.In the present embodiment, as shown in Fig. 2, the male thread tooth 111
Guide surface angle, θ1For negative angle, the guide surface 1111 of the male thread tooth 111 is the public spiral shell towards the outer extreme direction of male thread tooth 111
The side of line tooth 111, the guide surface angle, θ1Direction for negative angle as from the crest of male thread tooth 111 to tooth bottom, the guiding
Inwardly reduce in face 1111；Further, the loading end angle, θ of the male thread tooth 1112For negative angle, the carrying of the male thread tooth 111
Face 1112 is towards the side of the male thread tooth 111 of extreme direction in male thread tooth 111, the loading end angle, θ2It is for negative angle
From the crest of male thread tooth 111 to the direction at tooth bottom, which inwardly reduces.The male thread tooth 111 is in inverted trapezoidal knot
Structure.
In the present embodiment, the guide surface angle, θ of male thread tooth 1111With the loading end angle, θ of male thread tooth 1112It is identical；
For example, the guide surface angle, θ1With loading end angle, θ2It is -2 °~-5 °, it is preferred that the guide surface angle, θ1With carrying face angle
Spend θ2It is -3 °.
There is the box thread 21 in cone line variation, that is, the box thread 21 is from outside box thread portion 2 in the box thread portion 2
The direction F2 to the inner end in box thread portion 2 is held radially-inwardly to reduce, which can be threadedly engaged with male thread 11；Mother's spiral shell
There are multiple box thread teeth 211 in line portion 2, be formed with box thread slot 212 between adjacent box thread tooth 211 two-by-two.In this reality
It applies in example, as shown in figure 3, the guide surface angle δ of the box thread tooth 2111For negative angle, the guide surface 2111 of the box thread tooth 211
As towards the side of the box thread tooth 211 of the outer extreme direction of box thread tooth 211, the guide surface angle δ1It is from female spiral shell for negative angle
Direction of the crest of line tooth 211 to tooth bottom, the guide surface 2111 inwardly decrement；Further, the loading end of the box thread tooth 211
Angle δ2For negative angle, the loading end 2112 of the box thread tooth 211 is the box thread tooth towards extreme direction in box thread tooth 211
211 side, the loading end angle δ2Direction for negative angle as from the crest of box thread tooth 211 to tooth bottom, the loading end
2112 inwardly decrements.The box thread tooth 211 is in inverted trapezoidal structure.
In the present embodiment, the guide surface angle δ of box thread tooth 2111With the loading end angle δ of box thread tooth 2112It is identical；
For example, the guide surface angle δ1With loading end angle δ2It is -2 °~-5 °, it is preferred that the guide surface angle δ1With carrying face angle
Spend δ2It is -3 °.
The oil pipe thread connector of the utility model, the guide surface 1111 of each male thread tooth 111 of male screw portion 1 and holds
It is barb-shaped that section 1112 is both designed as negative angle, meanwhile, it the guide surface 2111 of each box thread tooth 211 in the box thread portion 2 and holds
Section 2112 is also both designed as that negative angle is barb-shaped, so that the oil pipe thread connector can effectively improve the resistance to compression of screw thread
Can, it effectively prevent thread failure and slippage.
An embodiment according to the present utility model, as shown in Figure 1, the outer end of the male screw portion 1 is formed with outer braking
Shoulder 113, the inner end in the box thread portion 2 is formed with interior braking shoulder 213, in the state that male screw portion 1 is engaged with box thread portion 2
Under, which contacts with interior braking shoulder 213.In the present embodiment, the outer braking shoulder 113 is towards public affairs
The radially inward slant of threaded portion 1 is arranged, and tilt angle ε is -12 °~-15 °, it is preferred that angle ε is -15 °；It should
Interior braking shoulder 213 inclines towards setting, tilt angle is radially outwardly sloping in box thread portion 2 with outer braking shoulder 113
Rake angle ε is identical.
The tilt angle ε of the outer braking shoulder 113 of the utility model setting is -12 °~-15 °, not only acts as button in control and twists
The effect of tight position, i.e., the accurate of raising oil pipe thread connector enters to detain, and effectively increases the ability that twisting strain is crossed in end face,
The comprehensive performance for improving oil pipe thread connector, ensure that the integrality of oil pipe thread connector, and ensure that sealing structure
Within elastic range.In addition, being set to make the utility model that there is better passability in the end of the second tubular part 20
The smooth internal walls transition face 216 that can be connected with interior braking shoulder 213 has been set, turbulent flow can be effectively prevent.
Further, it is formed with external seal circular arc 114 between male thread 11 and outer braking shoulder 113, in box thread 21
Interior sealing circular arc 214 is formed between interior braking shoulder 213, it, should in the state that male screw portion 1 is engaged with box thread portion 2
External seal circular arc 114 is contacted with interior sealing circular arc 214.
The utility model is abutted using the outer braking shoulder 113 of male screw portion 1 with the interior braking shoulder 213 in box thread portion 2
Cooperation, and contacted using the external seal circular arc 114 of male screw portion 1 and the interior sealing circular arc 214 in box thread portion 2, and use
The guide surface 1111 of male thread tooth 111 is contacted with the guide surface 2111 of box thread tooth 211, while using male thread tooth 111
Loading end 1112 and box thread tooth 211 the quadruple design of Sealing Structure that contacts of loading end 2112, stone has been effectively ensured
The sealing performance of oil pipe threaded connector.
In the present invention, for the ease of turnery processing, box thread 21 and interior sealing circular arc 214 in box thread portion 2
Between be formed with escape 215.
An embodiment according to the present utility model, from one end of male screw portion 1 to the other end of male screw portion 1, respectively
The wide Fb of the tooth of male thread tooth 111 is gradually decreased, two-by-two the groove width Fa of the male thread slot 112 between adjacent male thread tooth 111 by
It is cumulative to add.Further, from the other end in one end to the box thread portion 2 in box thread portion 2, the wide Fa of tooth of each box thread tooth 211 by
Decrescence increase, the groove width Fb of the box thread slot 212 between adjacent box thread tooth 211 is gradually decreased two-by-two.Meanwhile the male thread
The 11 and screw pitch L of box thread 21 is remained unchanged.The utility model can make every tooth stress consistent, improve the company of oil pipe thread connector
Intensity is connect, and effectively prevent thread failure and slip phenomenon.
Specifically, in the present embodiment, as shown in figure 4, from the inner end of male screw portion 1 to the side of the outer end of male screw portion 1
To F1, the wide Fb of the tooth of the male thread tooth 111 is gradually decreased, and reduction amount is 0.05mm~0.2mm, and the preferred reduction amount is
0.1mm；And the wide Fa of tooth of the box thread tooth 211 of the box thread 21 engaged with 11 screw thread of male thread is gradually increased, incrementss
For 0.05mm~0.2mm, the preferred incrementss are 0.1mm.
Certainly, (attached drawing is not provided) in a further embodiment, from the inner end of male screw portion 1 to the outer end of male screw portion 1
Direction F1, the wide Fb of the tooth of the male thread tooth 111 gradually increases, and incrementss are 0.05mm~0.2mm, the preferred incrementss
For 0.1mm；And the wide Fa of tooth of the box thread tooth 211 of the box thread 21 engaged with 11 screw thread of male thread is gradually decreased, and is reduced
Amount is 0.05mm~0.2mm, and the preferred reduction amount is 0.1mm.That is, in the present invention, the wide variable quantity k of the tooth
It is 0.1mm for 0.05mm~0.2mm, preferred variable quantity k, the variable quantity of the groove width is 0.05mm~0.2mm, preferably
, variable quantity k is 0.1mm.
In order to improve twist-on speed, the male screw portion 1 of the oil pipe thread connector of the utility model and the spiral shell in box thread portion 2
It is 3.45 teeth/inch away from L, being scaled metric size is 7.36mm, taper 1:16, the male thread of the oil pipe thread connector
The tooth of the male thread 11 in portion is wide and the tooth of groove width and box thread 21 is wide and the equal 0.1mm of variable quantity k of groove width.
The utility model uses using variable tooth wide and becomes groove width, and the structure design that screw pitch is constant, makes the stress of each tooth
Unanimously, the resistance to compression of the oil pipe thread connector is increased to 95% or more by the 40%~60% of conventional petroleum pipe screw thread.
The oil pipe thread connector of the utility model, structure is simple, and easy to operate, reliable performance, work efficiency is high.This reality
The longer well of deep-well, horizontal segment is met with novel, anti-compression properties are relatively reliable and possess the petroleum pipeline of independent intellectual property right
Nipple has good practicability to meet the needs of China's harshness operating condition is to petroleum pipeline.
The foregoing is merely several embodiments of the utility model, those skilled in the art are according to interior disclosed in application documents
Various changes or modifications can be carried out without departing from the spirit and scope of the utility model to the utility model embodiment by holding.
Claims (10)
1. a kind of oil pipe thread connector characterized by comprising
Male screw portion is formed in one end of the first tubular part, and the male screw portion has the male thread in cone line variation, described
Male thread has multiple male thread teeth, and the loading end angle of the guide surface angle of the male thread tooth and the male thread tooth is
Negative angle；
Box thread portion, is formed in one end of the second tubular part, the box thread portion have it is in cone line variation and can with it is described
The box thread that male thread matches, the box thread have multiple box thread teeth, the guide surface angle of the box thread tooth and institute
The loading end angle for stating box thread tooth is negative angle.
2. oil pipe thread connector as described in claim 1, which is characterized in that the outer end of the male screw portion is formed with outer braking
Shoulder, the inner end in the box thread portion are formed with interior braking shoulder, in the shape that the male screw portion is engaged with the box thread portion
Under state, the outer braking shoulder is contacted with the interior braking shoulder.
3. oil pipe thread connector as claimed in claim 2, which is characterized in that the male thread and the outer braking shoulder it
Between be formed with external seal circular arc, interior sealing circular arc is formed between the box thread and the interior braking shoulder, in the public affairs
In the state that threaded portion is engaged with the box thread portion, the external seal circular arc is contacted with the interior sealing circular arc.
4. oil pipe thread connector as claimed in claim 3, which is characterized in that between the box thread and the interior sealing circular arc
It is formed with escape.
5. oil pipe thread connector as described in claim 1, which is characterized in that the guide surface angle of the male thread tooth and described
The loading end angle of male thread tooth is identical；The loading end angle phase of the guide surface angle of the box thread tooth and the box thread tooth
Together.
6. oil pipe thread connector as claimed in claim 5, which is characterized in that the guide surface angle of the male thread tooth and described
The loading end angle of male thread tooth is -2 °~-5 °；The carrying of the guide surface angle of the box thread tooth and the box thread tooth
Face angle degree is -2 °~-5 °.
7. oil pipe thread connector as described in claim 1, which is characterized in that from one end of the male screw portion to the public spiral shell
The tooth width of the other end in line portion, each male thread tooth gradually decreases, two-by-two the groove width between the adjacent male thread tooth by
It is cumulative to add.
8. oil pipe thread connector as described in claim 1 or 7, which is characterized in that from the one end in the box thread portion to described
The other end in box thread portion, the tooth of each box thread tooth is wide gradually to subtract increase, two-by-two between the adjacent box thread tooth
Groove width gradually decreases.
9. oil pipe thread connector as claimed in claim 7, which is characterized in that the wide variable quantity of the tooth be 0.05mm~
0.2mm, the variable quantity of the groove width are 0.05mm~0.2mm.
10. oil pipe thread connector as claimed in claim 2, which is characterized in that it is described it is outer braking shoulder tilt angle be-
12 °~-15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821959661.7U CN209129545U (en) | 2018-11-26 | 2018-11-26 | Oil pipe thread connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821959661.7U CN209129545U (en) | 2018-11-26 | 2018-11-26 | Oil pipe thread connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209129545U true CN209129545U (en) | 2019-07-19 |
Family
ID=67246832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821959661.7U Active CN209129545U (en) | 2018-11-26 | 2018-11-26 | Oil pipe thread connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209129545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403877A (en) * | 2018-11-26 | 2019-03-01 | 中国石油大学(北京) | Oil pipe thread connector |
-
2018
- 2018-11-26 CN CN201821959661.7U patent/CN209129545U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403877A (en) * | 2018-11-26 | 2019-03-01 | 中国石油大学(北京) | Oil pipe thread connector |
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