CN106703712A - Seal connecting pipe joint - Google Patents
Seal connecting pipe joint Download PDFInfo
- Publication number
- CN106703712A CN106703712A CN201611071953.2A CN201611071953A CN106703712A CN 106703712 A CN106703712 A CN 106703712A CN 201611071953 A CN201611071953 A CN 201611071953A CN 106703712 A CN106703712 A CN 106703712A
- Authority
- CN
- China
- Prior art keywords
- joint
- shoulder
- conical surface
- female joint
- male joint
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003209 petroleum derivative Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The invention discloses a seal connecting pipe joint which comprises a female joint body and a male joint body. An inner thread is formed in the inner circumferential surface of the female joint body, a female joint body second shoulder and a female joint body first shoulder are sequentially arranged on the portion, corresponding to the inner thread, of the front end of the female joint body, an outer thread is correspondingly formed in the male joint body, and the inner thread and the outer thread are both cylindrical threads; the portions, corresponding to the thread connecting portion, of the back end of the contact surface of the female joint body and the male joint body are provided with an oil storage tool withdrawl groove and a sealing surface, the sealing surface is formed in the mode that a first conical surface on the inner wall of the female joint body makes contact with a spherical surface and a second conical surface on the outer wall of the male joint body in an extruding mode separately, and the spherical surface is connected with the second conical surface. According to the seal connecting pipe joint, not only is the leakproofness well guaranteed, but also thread sticking is avoided, the sealing surface is arranged in the middle, the sealing effect is good, the connector is not likely to be damaged, the threads can be protected, stress concentration is effectively avoided, and the overall service life of the product is prolonged.
Description
Technical field
The invention belongs to oil pipes technical field, more particularly to one kind is tightly connected pipe joint.
Background technology
Petroleum gas is the valuable source of the mankind, and in petroleum gas transport, the sealing for improving pipe is proposed
Requirement higher, while using interference fit, there is Thread-sticking in fragile screw thread, these are all to the bonding strength of screw thread
It is proposed very high request.
The content of the invention
In order to solve the above technical problems, the present invention provides one kind is tightly connected pipe joint, including female joint and male joint, institute
State female joint inner peripheral surface and be machined with internal thread, the front end corresponding to the internal thread in female joint is sequentially provided with female joint the
Two shoulders, female joint first shoulder, are correspondingly provided with external screw thread in the male joint, the internal thread is cylinder spiral shell with external screw thread
The rear end for corresponding to threaded joints on the contact surface of line, the female joint and male joint is provided with oil storage escape, sealing surface, institute
State sealing surface and mutually extruded with second conical surface with the spherical on male joint outer wall respectively by first conical surface on female joint inwall and contact
Formed, the spherical is mutually connected with second conical surface, the taper of first conical surface is 1/12-1/16;Second conical surface
Taper is 1/6-1/8, the corresponding 30~50mm of radius of spherical, and link position of the male joint 1 with female joint 2 inside is
The shoulder of male joint second, the shoulder of the male joint second is circular conical surface, tilted to tube wall, forms the annular cone angle of an introversion,
The female joint is mutually connected in plane, the male joint and the female joint interference fit with the second shoulder of the male joint 7.
Preferably, a transition conical surface is formed between second conical surface and the shoulder of male joint second.
Preferably, male joint first shoulder, the male joint are mutually connected in the female joint first shoulder
A circle circular groove is provided with the root of one shoulder.
A circle circular groove is provided with the root of the male joint first shoulder, by setting circular groove it is possible to prevente effectively from stress collection
In, improve product whole service life.
Sealing structure is using two-stage sealing structure, i.e. first conical surface to spherical and first conical surface to the close of second conical surface
Envelope design form, the taper of the taper less than second conical surface of first conical surface, forms the conical surface and the conical surface, and the conical surface is crowded with spherical
The form of press contacts, sealing effectiveness is fine, and sealing station is away from torque shoulder, with sealed reliable, prevents sealing face damage
Feature;
First conical surface and spherical make sealing structure in the case where tensile load is acted on by extruding, keep seal contact pressure and length
Degree;First conical surface and second conical surface make sealing structure in the case where compressive load is acted on by extruding, keep seal contact pressure;Oil storage
The function of escape is for the unnecessary thread compound of storage and makes internal thread machining withdrawing.
Intermediate incline and mesospore inclined-plane are formed to the inclined annular cone angle in middle part so that connection end and inboard wall of tube body
Form metal interference to coordinate, connection sealing is effectively ensured.
The present invention is tightly connected pipe joint and both preferably ensure that sealing, in preventing Thread-sticking, sealing surface to be located at again
Between, good sealing effect is also less prone to be damaged in interface, can protect screw thread, is prevented effectively from stress concentration, and improving product integrally makes
Use the life-span.
Brief description of the drawings
Further illustrate with reference to the accompanying drawings and detailed description:
Fig. 1 is a kind of structural representation for being tightly connected pipe joint of the embodiment of the present invention.
Specific embodiment
Embodiment 1
As shown in figure 1, one kind is tightly connected pipe joint, including female joint 2 and male joint 1, the processing of the inner peripheral surface of the female joint 2
There is internal thread, the front end corresponding to the internal thread in female joint 2 is sequentially provided with the second shoulder of female joint 3, female joint first
Shoulder 10, is correspondingly provided with external screw thread in the male joint 1, the internal thread is cylindrical thread, the female joint 2 with external screw thread
Oil storage escape 4, sealing surface 5, the sealing surface 5 are provided with the rear end on the contact surface of male joint 1 corresponding to threaded joints
Mutually extrude to contact with second conical surface 5 with the spherical 11 on male joint outer wall respectively by first conical surface on female joint inwall and formed,
The spherical 11 is mutually connected with second conical surface 5, and the taper of first conical surface is 1/12-1/16;The cone of second conical surface
It is 1/6-1/8 to spend, the corresponding 30~50mm of radius of spherical, and the male joint 1 is public affairs with the link position inside of female joint 2
The second shoulder of joint 7, the shoulder of the male joint second is circular conical surface, tilted to tube wall, forms the annular cone angle 6 of an introversion,
The female joint is mutually connected in plane, the male joint and the female joint interference fit with the second shoulder of the male joint 7.
A transition conical surface 8 is formed between second conical surface 5 and the second shoulder of male joint 7.
Male joint first shoulder is mutually connected in the female joint first shoulder 10, at the root of the male joint first shoulder
It is provided with a circle circular groove 12.
Finally it should be noted that:The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although being described in detail to the present invention with reference to the foregoing embodiments, for a person skilled in the art, it still may be used
Modified with to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic.
All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in of the invention
Within protection domain.
Claims (3)
1. one kind is tightly connected pipe joint, including female joint(2)And male joint(1), the female joint(2)Inner peripheral surface is machined with
Internal thread, in female joint(2)The upper front end corresponding to the internal thread is sequentially provided with the shoulder of female joint second(3), female joint
One shoulder(10), the male joint(1)On be correspondingly provided with external screw thread, the internal thread is cylindrical thread with external screw thread, described
Female joint(2)With male joint(1)Contact surface on correspond to threaded joints rear end be provided with oil storage escape(4)And sealing
Face, the sealing surface by first conical surface on female joint inwall respectively with male joint outer wall on spherical(11)With second conical surface
(5)Mutually extruding contact is formed, the spherical(11)With second conical surface(5)Mutually it is connected, the taper of first conical surface is 1/12-
1/16;The taper of second conical surface is 1/6-1/8, the corresponding 30~50mm of radius of spherical, the male joint(1)Connect with mother
Head(2)Link position inside is the shoulder of male joint second(7), the shoulder of the male joint second(7)It is circular conical surface, to tube wall
It is tilted, form the annular cone angle of an introversion(6), the female joint(2)With the shoulder of the male joint second(7)Mutually it is connected in flat
Face, the male joint(1)With the female joint(2)Interference fit.
It is 2. according to claim 1 to be tightly connected pipe joint, it is characterised in that:In second conical surface(5)With male joint second
Shoulder(7)Between be formed with a transition conical surface(8).
3. according to the anti-Thread-sticking tool joint described in claim 1, it is characterised in that:With the female joint first shoulder
(10)Male joint first shoulder is mutually connected in, a circle circular groove is provided with the root of the male joint first shoulder(12).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611071953.2A CN106703712A (en) | 2016-11-29 | 2016-11-29 | Seal connecting pipe joint |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611071953.2A CN106703712A (en) | 2016-11-29 | 2016-11-29 | Seal connecting pipe joint |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106703712A true CN106703712A (en) | 2017-05-24 |
Family
ID=58934196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201611071953.2A Pending CN106703712A (en) | 2016-11-29 | 2016-11-29 | Seal connecting pipe joint |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106703712A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108843253A (en) * | 2018-08-01 | 2018-11-20 | 西南石油大学 | A kind of compound lifting pumping unit oil pipe in underground and oil storing tube jointing |
CN110500044A (en) * | 2019-09-27 | 2019-11-26 | 衡阳华菱钢管有限公司 | The nipple of antifatigue casing |
CN112824642A (en) * | 2019-11-20 | 2021-05-21 | 宝山钢铁股份有限公司 | Buttress thread joint with high anti-thread gluing performance |
CN114482877A (en) * | 2022-01-27 | 2022-05-13 | 泰州领航机械有限公司 | Combined drill rod joint |
CN117868701A (en) * | 2024-03-13 | 2024-04-12 | 大庆市瑞斯德石油机械制造有限公司 | Air-tight seal oil pipe based on special threads |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040036286A1 (en) * | 2000-08-09 | 2004-02-26 | Giuseppe Della Pina | Screw threaded joint for continous-profile tubes |
CN203783486U (en) * | 2014-03-27 | 2014-08-20 | 无锡西姆莱斯石油专用管制造有限公司 | Thread gluing prevention drill rod joint |
CN104563904A (en) * | 2014-12-31 | 2015-04-29 | 达力普石油专用管有限公司 | Sealing connecting structure of casing of gas well |
CN105257224A (en) * | 2015-10-30 | 2016-01-20 | 天津精工石油专用管件有限公司 | Pipe-thread joint assembly for petroleum/natural gas industry |
CN206429201U (en) * | 2016-11-29 | 2017-08-22 | 无锡金顶石油管材配件制造有限公司 | One kind is tightly connected pipe joint |
-
2016
- 2016-11-29 CN CN201611071953.2A patent/CN106703712A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040036286A1 (en) * | 2000-08-09 | 2004-02-26 | Giuseppe Della Pina | Screw threaded joint for continous-profile tubes |
CN203783486U (en) * | 2014-03-27 | 2014-08-20 | 无锡西姆莱斯石油专用管制造有限公司 | Thread gluing prevention drill rod joint |
CN104563904A (en) * | 2014-12-31 | 2015-04-29 | 达力普石油专用管有限公司 | Sealing connecting structure of casing of gas well |
CN105257224A (en) * | 2015-10-30 | 2016-01-20 | 天津精工石油专用管件有限公司 | Pipe-thread joint assembly for petroleum/natural gas industry |
CN206429201U (en) * | 2016-11-29 | 2017-08-22 | 无锡金顶石油管材配件制造有限公司 | One kind is tightly connected pipe joint |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108843253A (en) * | 2018-08-01 | 2018-11-20 | 西南石油大学 | A kind of compound lifting pumping unit oil pipe in underground and oil storing tube jointing |
CN110500044A (en) * | 2019-09-27 | 2019-11-26 | 衡阳华菱钢管有限公司 | The nipple of antifatigue casing |
CN110500044B (en) * | 2019-09-27 | 2024-02-09 | 衡阳华菱钢管有限公司 | Threaded joint of anti-fatigue sleeve |
CN112824642A (en) * | 2019-11-20 | 2021-05-21 | 宝山钢铁股份有限公司 | Buttress thread joint with high anti-thread gluing performance |
CN114482877A (en) * | 2022-01-27 | 2022-05-13 | 泰州领航机械有限公司 | Combined drill rod joint |
CN114482877B (en) * | 2022-01-27 | 2023-10-03 | 泰州领航机械有限公司 | Combined drill rod joint |
CN117868701A (en) * | 2024-03-13 | 2024-04-12 | 大庆市瑞斯德石油机械制造有限公司 | Air-tight seal oil pipe based on special threads |
CN117868701B (en) * | 2024-03-13 | 2024-07-19 | 大庆市瑞斯德石油机械制造有限公司 | Air-tight seal oil pipe based on special threads |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |