CN204738761U - Hollow sucker rod sealing joint of welding formula - Google Patents
Hollow sucker rod sealing joint of welding formula Download PDFInfo
- Publication number
- CN204738761U CN204738761U CN201520480422.3U CN201520480422U CN204738761U CN 204738761 U CN204738761 U CN 204738761U CN 201520480422 U CN201520480422 U CN 201520480422U CN 204738761 U CN204738761 U CN 204738761U
- Authority
- CN
- China
- Prior art keywords
- joint
- male joint
- sucker rod
- tubulose
- sealing ring
- 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
Links
Landscapes
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model discloses a hollow sucker rod sealing joint of welding formula comprises male joint, sealing washer and female joint, the middle section of male joint has the external screw thread, the hypomere is the tubulose outer cone parts, and it has the seal groove to open on the tubulose outer cone parts, is equipped with in the seal groove the sealing washer, the female joint upper segment have with the internal thread that the outer thread to match in male joint middle section closed, its middle section be with the same tubulose inner cone of male joint hypomere tubulose outer cone parts tapering, threaded connection is closed with thread to match outside its upper segment internal thread and the male joint middle section to the female joint. Adopt the hollow sucker rod sealing joint of welding formula of above -mentioned structure, when the female joint is connected with public connector thread the outer cone parts is big to the extrusion force of inner cone, and the male joint is tight, sealed effectual with the female joint complex, and the sealing washer can not receive scraping of external environment condition yet and bump the phenomenon in addition.
Description
Technical field
The utility model relates to a kind of welded hollow sucker rod seal nipple.
Background technology
Due to viscous crude poor fluidity, for increasing viscous crude mobility in the wellbore, usually supporting the use electrical heating and carrying out pit shaft heating, and under wellbore electric heating employing hollow rod inner chamber, electrical heating elements realizes.
A kind of seal form of existing welded hollow sucker rod has seal groove on the cylinder of pin thread end, by having the sealing of flexible sealing ring.During assembling, female joint is sleeved on male joint and sealing ring, and female joint inwall and sealing ring form the sealing cutting off hollow rod inner chamber and external fluid passage.The seal form Problems existing one of above-mentioned existing welded hollow sucker rod there is scratch to sealing ring when operation, collides with, and joint sealing circle is out of shape and then seal failure; Two is that male joint seal groove position sectional area is less, and weight capacity reduces, and has opening effect, reduces fatigue life.
The another kind of seal form of existing welded hollow sucker rod is provided with external screw thread at male joint stage casing formation Outer Taper, its hypomere, female joint epimere forms inner cone, its stage casing is provided with the internal thread matched, sheathed sealing ring in the Outer Taper of male joint stage casing, relies on the external screw thread of the internal thread of female joint and male joint in mating connection.This welded hollow sucker rod seal nipple Problems existing is mainly: the extruding force formed sealing ring when the inner cone of female joint epimere matches with male joint stage casing Outer Taper is relatively little, causes poorly sealed, easily produces seal failure.
Utility model content
The technical problems to be solved in the utility model can not produce scratching to seal when being to provide a kind of good sealing effect, operation and can not reduce the welded hollow sucker rod seal nipple of fatigue life.
For solving the problems of the technologies described above, welded hollow sucker rod seal nipple of the present utility model, by male joint, sealing ring and female joint are formed, the stage casing of described male joint has external screw thread, hypomere is tubulose Outer Taper, tubulose Outer Taper has seal groove, seal groove is built with described sealing ring, described female joint epimere has the internal thread matched with the external screw thread in described male joint stage casing, its stage casing is the tubulose inner cone identical with described male joint hypomere tubulose Outer Taper tapering, described female joint to match with male joint stage casing external screw thread with its epimere internal thread and is threaded.
Improve as one of the present utility model, described sealing ring is fluororubber O-type sealing ring.
Improve as another kind of the present utility model, the seal groove that described tubulose Outer Taper is offered is twice, in this two seals groove, described sealing ring is all housed.
Adopt the welded hollow sucker rod seal nipple of said structure, because the stage casing of described male joint has external screw thread, hypomere is tubulose Outer Taper, tubulose Outer Taper has seal groove, seal groove is built with described sealing ring, described female joint epimere has the internal thread matched with the external screw thread in described male joint stage casing, its stage casing is the tubulose inner cone identical with described male joint hypomere tubulose Outer Taper tapering, therefore when female joint is threaded with male joint, the extruding force of described Outer Taper to inner cone is large, it is tight that male joint coordinates with female joint, good sealing effect, sealing ring also can not be subject to the scratching phenomenon of external environment condition in addition.
The preferred fluororubber O-type sealing ring of described sealing ring, extends application life of the present utility model further and can obtain better sealing effectiveness; Adopt two seals structure can improve sealing stability of the present utility model further.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is that the master of the utility model welded hollow sucker rod seal nipple cuts open structural representation depending on office.
Fig. 2 is I place structure enlarged diagram in Fig. 1.
Detailed description of the invention
See Fig. 1, Fig. 2, welded hollow sucker rod seal nipple of the present utility model, by male joint 10, sealing ring 20 and female joint 30 are formed, the stage casing of described male joint 10 has external screw thread 11, hypomere is tubulose Outer Taper 12, tubulose Outer Taper 12 has seal groove 13, seal groove 13 is built with described sealing ring 20, described female joint 30 epimere has the internal thread 31 matched with the external screw thread 11 in described male joint 10 stage casing, its stage casing is the tubulose inner cone 32 identical with described male joint hypomere tubulose Outer Taper 12 tapering, described female joint 30 to match with male joint 10 stage casing external screw thread 11 with its epimere internal thread 31 and is threaded.
Described sealing ring 20 is preferably fluororubber O-type sealing ring.
The seal groove 13 that described tubulose Outer Taper 12 is offered is twice, in this two seals groove 13, described sealing ring 20 is all housed.
Claims (3)
1. a welded hollow sucker rod seal nipple, by male joint (10), sealing ring (20) and female joint (30) are formed, it is characterized in that: the stage casing of described male joint (10) has external screw thread (11), hypomere is tubulose Outer Taper (12), tubulose Outer Taper (12) has seal groove (13), seal groove (13) is built with described sealing ring (20), described female joint (30) epimere has the internal thread (31) matched with the external screw thread (11) in described male joint (10) stage casing, its stage casing is the tubulose inner cone (32) identical with described male joint hypomere tubulose Outer Taper tapering, described female joint (30) to match with male joint (10) stage casing external screw thread (11) with its epimere internal thread (31) and is threaded.
2. welded hollow sucker rod seal nipple as claimed in claim 1, is characterized in that: described sealing ring (20) is fluororubber O-type sealing ring.
3. welded hollow sucker rod seal nipple as claimed in claim 1 or 2, is characterized in that: the seal groove (13) that described tubulose Outer Taper (12) is offered is twice, in this two seals groove (13), described sealing ring (20) is all housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520480422.3U CN204738761U (en) | 2015-07-07 | 2015-07-07 | Hollow sucker rod sealing joint of welding formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520480422.3U CN204738761U (en) | 2015-07-07 | 2015-07-07 | Hollow sucker rod sealing joint of welding formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204738761U true CN204738761U (en) | 2015-11-04 |
Family
ID=54420502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520480422.3U Expired - Fee Related CN204738761U (en) | 2015-07-07 | 2015-07-07 | Hollow sucker rod sealing joint of welding formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204738761U (en) |
-
2015
- 2015-07-07 CN CN201520480422.3U patent/CN204738761U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209278679U (en) | A kind of oil transportation pipe fitting | |
| CN105655800B (en) | A kind of deep-sea oil-filled cable fast junction apparatus | |
| CN205638328U (en) | Well head hangs assembly | |
| CN106678469A (en) | Extending-and-contracting connection pipe | |
| CN204738761U (en) | Hollow sucker rod sealing joint of welding formula | |
| CN202100220U (en) | Oil pipe and casing hanger with controllable sealing performance | |
| CN203685057U (en) | Petroleum drill rod | |
| CN204419059U (en) | Tool joint | |
| CN205189775U (en) | Double -walled drilling rod that well drilling of accuse pressure was used | |
| CN205937287U (en) | Safety arrangement torque axis of using among coal mining equipment | |
| CN204691696U (en) | A kind of high-temperature metal sealing petroleum tube connector | |
| CN203517054U (en) | Connection structure of inclined connection pipes of H pipes | |
| CN202117611U (en) | Ram blowout preventer with self-sealing function | |
| CN204082071U (en) | A kind of wellhead packing box of producing well | |
| CN203515351U (en) | Short joint device for disassembling speed pipe column | |
| CN204573397U (en) | Supply pipe pipe joint | |
| CN204187166U (en) | Soak with PE pipe and submersible pump or packet connection set a kind ofly | |
| CN205025427U (en) | Piston sample valve that prevents frostbite | |
| CN205208002U (en) | Steel ball formula quick change coupler | |
| CN204284444U (en) | A kind of drilling rod transfer case of special seal structure | |
| CN203823294U (en) | Movable flange joint | |
| CN202810653U (en) | Guide tool for wellhead pressurizing tool | |
| CN204040926U (en) | Novel hollow sucker rod | |
| CN207298145U (en) | A kind of water supply and sewerage pipeline reserves casing | |
| CN204327965U (en) | Tool joint sealing lining |
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: 20151104 Termination date: 20190707 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |