CN206000479U - Petroleum oil joint - Google Patents
Petroleum oil joint Download PDFInfo
- Publication number
- CN206000479U CN206000479U CN201620883700.4U CN201620883700U CN206000479U CN 206000479 U CN206000479 U CN 206000479U CN 201620883700 U CN201620883700 U CN 201620883700U CN 206000479 U CN206000479 U CN 206000479U
- Authority
- CN
- China
- Prior art keywords
- joint
- box cupling
- petroleum oil
- thread
- external screw
- 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
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model discloses a kind of petroleum oil joint, including the joint of petroleum oil body（1）Be used for being tightly connected joint described in two（1）Box cupling（2）, described box cupling（2）Axially two ends are all symmetrically formed with female thread, are provided with the external screw thread mating with described female thread in described groove, and described external screw thread and screw-internal thread fit form primary sealing area（4）, described box cupling（2）The circular bead surface of both ends of the surface and described groove be secondary sealing area（5）, described primary sealing area（4）With described secondary sealing area（5）Between crossover position be provided with the 3rd sealing surface（6）, described 3rd sealing surface（6）Including the cylinder being arranged on described groove（11）Be arranged at described box cupling（2）On sphere（21）, described cylinder（11）And sphere（21）Interference fit, described female thread and external screw thread are trapezoidal thread.Petroleum oil joint tighness is good, and bonding strength is high, long service life, stable in placement.
Description
Technical field
This utility model is related to a kind of petroleum oil joint it is adaptable to connect petroleum oil, belongs to petroleum equipment joint neck
Domain.
Background technology
Current petroleum oil joint great majority are threaded using traditional API, due to due to structure design, tradition
Joint often occurs a lot of problems, not all right from trapezoidal thread connection sealing, relatively low from round thread bonding strength.
Utility model content
Technical problem to be solved in the utility model be provide a kind of, sealing high to petroleum oil bonding strength strong and
Joint sealing face is not easy the petroleum oil joint being broken in use；Further, this utility model provides one kind
Stable in placement, is difficult the petroleum oil joint rolling；Further, this utility model provides between a kind of box cupling and joint not
Easily there is the petroleum oil joint of thread gluing problem.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of petroleum oil joint, the joint including petroleum oil body and for being tightly connected connecing of joint described in two
Hoop, axially two ends are all symmetrically formed with female thread to described box cupling, are provided with positioned at joint described in two in the middle part of described box cupling inwall
Between mesospore ring, the outer wall of described joint offers the groove for accommodating described box cupling, be provided with described groove with
The external screw thread of described female thread coupling, the both ends of the surface of described joint all form shoulder, described external screw thread and interior spiral shell with described box cupling
Stricture of vagina cooperatively forms primary sealing area, and the both ends of the surface of described box cupling are secondary sealing area with the circular bead surface of described groove, and described first
Crossover position between sealing surface and described secondary sealing area is provided with the 3rd sealing surface, and described 3rd sealing surface includes being arranged on
Cylinder on described groove and the sphere being arranged on described box cupling, described cylinder sphere interference fit, described shoulder is reverse
Shoulder, described female thread and external screw thread are trapezoidal thread.
The main body of described box cupling is cuboid tubular structure.
The angle of described shoulder is -30oArrive -10o.
Described female thread and externally threaded bottom of the tooth and tooth top are respectively provided with rounding.
The outer surface of described box cupling and described joint is provided with antirust coat.
It is additionally provided with sealing ring between described joint and described mesospore ring.
Described female thread and external screw thread are all using the structure of 8 teeth or 6 teeth.
The beneficial effects of the utility model：A kind of petroleum oil joint that this utility model provides, has three-layer sealed face,
Wherein the 3rd sealing surface is that the sphere interference fit being arranged on the cylinder and box cupling on groove is formed, the interference of metal/metal
Fit structure has good sealing effectiveness, will seal spherical design inside female thread, joint seals in use simultaneously
Face is not easy to be broken, and extends the service life of joint, in addition, described female thread and external screw thread are trapezoidal thread, permissible
Ensure the higher bonding strength of petroleum oil joint, described shoulder is reverse shoulder, remain to keep higher under tensile load
Contact pressure, improve sealing effectiveness；The main body of described box cupling can be for cuboid tubular structure it is ensured that petroleum oil connects
Head stable in placement, is difficult to roll；On female thread and described joint on described box cupling, externally threaded bottom of the tooth and tooth top have rounding,
Can allow thread compound preferably between form of thread interstitial flow it is ensured that petroleum oil joint is not susceptible to thread gluing.
Brief description
Fig. 1 is cross-sectional view of the present utility model.
Fig. 2 is the enlarged drawing of S portion in Fig. 1.
Fig. 3 is the outline drawing of box cupling.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is further described.
As shown in figure 1, a kind of petroleum oil joint, the joint 1 including petroleum oil body and be used for being tightly connected two institutes
State the box cupling 2 of joint 1, described box cupling 2 is axially all symmetrically formed with female thread in two ends, be provided with the middle part of described box cupling 2 inwall
Mesospore ring 3 between joint described in two 1, the outer wall of described joint 1 offers the groove for accommodating described box cupling 2,
It is provided with the external screw thread mating with described female thread, the both ends of the surface of described joint 1 all form platform with described box cupling 2 in described groove
Shoulder 7, described external screw thread and screw-internal thread fit form primary sealing area 4, the both ends of the surface of described box cupling 2 and the circular bead surface of described groove
For secondary sealing area 5, the crossover position between described primary sealing area 4 and described secondary sealing area 5 is provided with the 3rd sealing surface
6.
Described female thread and external screw thread is trapezoidal thread it is ensured that the higher bonding strength of petroleum oil joint.
As shown in figure 3, the main body of described box cupling 2 is cuboid tubular structure it is ensured that petroleum oil joint is put surely
Fixed, it is difficult to roll.
The angle of described shoulder 7 is -30oArrive -10o, as preferably could be arranged to -15o.
On female thread and described joint 1 on described box cupling 2, externally threaded bottom of the tooth and tooth top have rounding, can allow spiral shell
Stricture of vagina fat preferably interstitial flow between form of thread, improves threaded connection place sealing and lubricity, prevents thread gluing problem.
The outer surface of described box cupling 2 and described joint 1 is provided with antirust coat, extends the use year of petroleum oil joint
Limit.
It is additionally provided with sealing ring between described joint 1 and described mesospore ring 3, be further ensured that sealing effectiveness
State the structure that external screw thread on female thread and described joint 1 on box cupling 2 adopts 8 teeth or 6 teeth.
As shown in Fig. 2 described 3rd sealing surface 6 includes the cylinder 11 being arranged on described groove and is arranged at described box cupling
Sphere 21 on 2, described cylinder 11 and sphere 21 interference fit, will seal spherical design inside female thread, and joint is using
During sealing surface be not easy to be broken；Described shoulder 7 is reverse shoulder, and tensile load is topmost load during sleeve pipe work
One of, reverse shoulder remains to keep higher contact pressure with respect to the reverse shoulder in right angle under tensile load, is conducive to oil
The raising of the sealing effectiveness of oil pipe.
The above be only preferred implementation of the present utility model it should be pointed out that：Common skill for the art
For art personnel, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (7)
1. a kind of petroleum oil joint it is characterised in that：Joint including petroleum oil body（1）Be used for being tightly connected two institutes
State joint（1）Box cupling（2）, described box cupling（2）Axially two ends are all symmetrically formed with female thread, described box cupling（2）In inwall
Portion is provided with positioned at joint described in two（1）Between mesospore ring（3）, described joint（1）Outer wall on offer for accommodating
State box cupling（2）Groove, be provided with the external screw thread mating with described female thread, described joint in described groove（1）Both ends of the surface
All with described box cupling（2）Form shoulder（7）, described external screw thread and screw-internal thread fit form primary sealing area（4）, described box cupling
（2）Both ends of the surface all form secondary sealing area with the circular bead surface of described groove（5）, described primary sealing area（4）With described second
Sealing surface（5）Between crossover position be provided with the 3rd sealing surface（6）, described 3rd sealing surface（6）Described recessed including being arranged on
Cylinder on groove（11）Be arranged on described box cupling（2）On sphere（21）, described cylinder（11）And sphere（21）Interference fit,
Described shoulder（7）For reverse shoulder, described female thread and external screw thread are trapezoidal thread.
2. the petroleum oil joint according to claim 1 is it is characterised in that described box cupling（2）Main body be cuboid cylinder
Shape structure.
3. the petroleum oil joint according to claim 1 is it is characterised in that described shoulder（7）Angle be -30oTo-
10o.
4. the petroleum oil joint according to claim 1 it is characterised in that described female thread and externally threaded bottom of the tooth and
Tooth top is respectively provided with rounding.
5. the petroleum oil joint according to claim 1 is it is characterised in that described box cupling（2）With described joint（1）'s
Outer surface is provided with antirust coat.
6. the petroleum oil joint according to claim 1 is it is characterised in that described joint（1）With described mesospore ring（3）
Between be additionally provided with sealing ring.
7. the petroleum oil joint according to claim 1 is it is characterised in that described female thread and external screw thread are all using 8 teeth
Or 6 tooth structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620883700.4U CN206000479U (en) | 2016-08-16 | 2016-08-16 | Petroleum oil joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620883700.4U CN206000479U (en) | 2016-08-16 | 2016-08-16 | Petroleum oil joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206000479U true CN206000479U (en) | 2017-03-08 |
Family
ID=58198807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620883700.4U Expired - Fee Related CN206000479U (en) | 2016-08-16 | 2016-08-16 | Petroleum oil joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206000479U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121552A (en) * | 2016-08-16 | 2016-11-16 | 江苏迪威高压科技股份有限公司 | Petroleum oil joint |
-
2016
- 2016-08-16 CN CN201620883700.4U patent/CN206000479U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121552A (en) * | 2016-08-16 | 2016-11-16 | 江苏迪威高压科技股份有限公司 | Petroleum oil joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170308 Termination date: 20190816 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |