CN221120583U - Thread anti-sticking structure with guide belt - Google Patents
Thread anti-sticking structure with guide belt Download PDFInfo
- Publication number
- CN221120583U CN221120583U CN202323201731.6U CN202323201731U CN221120583U CN 221120583 U CN221120583 U CN 221120583U CN 202323201731 U CN202323201731 U CN 202323201731U CN 221120583 U CN221120583 U CN 221120583U
- Authority
- CN
- China
- Prior art keywords
- guide belt
- shell
- joint
- thread
- groove
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 230000002093 peripheral effect Effects 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- -1 polytetrafluoroethylene copper Polymers 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 15
- 239000000463 material Substances 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model discloses a thread anti-sticking structure with a guide belt, and relates to the technical field of thread anti-sticking. The structure comprises a joint and a shell in threaded connection with the joint, wherein an external thread is arranged on the outer circumferential surface of the joint, a sealing groove and a guiding groove are arranged at the rear end of the external thread on the joint, a sealing ring is arranged in the sealing groove, and a guiding belt is arranged in the guiding groove. According to the technical scheme, a section of space is supported between the joint and the contact surface of the spigot of the non-threaded section of the shell, so that the thread connection spigot after screwing can not directly generate the sticking problem, and the service life of related parts is prolonged.
Description
Technical Field
The utility model relates to the technical field of thread anti-sticking, in particular to a downhole thread anti-sticking structure.
Background
The oil extraction equipment of the oil field comprises a plurality of parts of the anti-corrosion material connectors and the anti-corrosion material shells, which are connected through threads. Due to the physical properties of the self materials and the need of being in underground with high temperature and high pressure throughout the year, the problem of thread spigot sticking is generated, and the problems of difficult disassembly of the thread and unreusable parts are further caused.
At present, common anti-sticking measures in the prior art include methods of soft nitriding treatment of the thread surface, different hardness of connecting threads, wear-resistant threaded sleeves added between threaded connections easy to stick and buckle, and the like. However, these methods have problems, such as the length of underground oil extraction equipment is kilometer and very heavy, and the soft nitriding treatment of the thread surface can improve the wear resistance and quality of the thread, but can reduce the bearing capacity of the thread, so that the thread is more fragile and is easy to break; the hardness of the anti-corrosion material is low due to the physical properties of the material, the thread gluing phenomenon is easy to generate, the price of the anti-corrosion material with high hardness is high, and the cost is increased; the method of adding the wear-resistant screw sleeve made of copper alloy can lead to high cost due to more threaded connection in the underground oil extraction equipment.
The technical scheme of the application is obtained aiming at the problems encountered in the prior art.
Disclosure of utility model
Aiming at the defects in the background technology, the utility model provides a thread anti-sticking structure with a guide belt, and by the guide belt structure added by the utility model, a section of space is supported between the joint and the contact surface of the spigot of the non-threaded section of the shell, the contact area between threads is reduced, a certain anti-sticking effect is achieved, and the service life of related parts is prolonged.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a thread anti-sticking structure with a guide belt comprises a joint, a shell, the guide belt and a sealing ring;
the outer peripheral surface of one end of the connector is provided with external threads, and the shell is sleeved outside the connector and is in threaded connection with the external threads;
The guide belt is sleeved outside the connector and is arranged on one side of the external thread, which is away from the shell, the shell is sleeved outside the guide belt, and the guide belt is used for enabling the connector to form a gap between the shells;
The sealing ring is sleeved outside the connector and arranged on one side, away from the external threads, of the guide belt, the shell is sleeved outside the sealing ring, and the sealing ring is used for sealing and connecting the connector with the shell.
By adopting the technical scheme, the guide groove and the guide belt with the guide supporting function are newly added at the rear end of the external thread of the connector, a section of space is supported between the contact surfaces of the connector and the spigot of the non-threaded section of the shell, the contact area between threads is reduced, and compared with the condition without the guide belt in the prior art, a certain anti-buckling effect can be achieved at the position of the connector and the spigot of the non-threaded section of the shell; the guiding function has a centralizing effect, so that the joint and the shell can not be eccentric when being screwed, and the friction of the contact surface at the seam allowance of the non-threaded section is reduced; in addition, the guide belt with good wear resistance can also play a role in sealing.
The utility model is further provided with: the outer peripheral surface of the connector is also provided with a guide groove, the guide groove is arranged on one side of the external thread, which is away from the shell, and the guide belt is arranged in the guide groove.
Preferably, a sealing groove is further formed in the outer peripheral surface of the joint, the sealing groove is arranged on one side, deviating from the external threads, of the guiding groove, and the sealing ring is arranged in the sealing groove.
The utility model is further provided with: an internal thread is arranged on the inner wall of the shell, and the internal thread is connected with the external thread;
The inner wall of the shell is also provided with a positioning step, and the positioning step is arranged at one end of the internal thread, which is close to the joint;
The outer peripheral surface of the connector is also provided with a positioning groove, the positioning groove is arranged between the external thread and the guide belt, and the positioning step is clamped in the positioning groove.
Preferably, the end face of the positioning groove, which is close to the external thread, is provided with a first chamfer, and/or the end face of the positioning groove, which is far away from the external thread, is provided with a second chamfer.
Preferably, the inner wall of the shell is further provided with a limiting step, the limiting step is arranged at one end of the internal thread, which is away from the positioning step, and one end of the joint is abutted against the limiting step.
The utility model is further provided with: the outer peripheral surface of the connector is also provided with a limiting shaft shoulder, the limiting shaft shoulder is arranged on one side of the sealing ring, which is away from the guide belt, and one end of the shell is abutted against the limiting shaft shoulder.
The utility model is further provided with: the guide belt is made of polytetrafluoroethylene copper powder.
The utility model is further provided with: the surface of the guide belt is coated with lubricating grease.
The utility model is further provided with: the end face of the shell, which faces the joint, is provided with an inner chamfer.
In general, the above technical solutions conceived by the present utility model, compared with the prior art, enable the following beneficial effects to be obtained:
1. Through newly increasing guide way and the guiding strip that has the direction supporting role at the external screw thread rear end of joint, prop up one section space between the contact surface of the tang of joint and the non-screw section of casing, reduced the area of contact between the screw thread, for the condition of no guiding strip among the prior art, can play certain antiseized knot effect in the tang department of the non-screw section of this joint and casing, prolonged the life of relevant spare part, and the guiding strip cost is lower, and the economic nature is better.
2. The joint without the guide belt and the spigot of the non-threaded section of the shell are eccentric, so that the contact surface friction is caused, the direct contact of the spigot of the two non-threaded sections can be avoided after the guide belt is added, the righting effect is achieved, and the eccentric amount is reduced.
3. The guide belt has good wear resistance and sealing effect, is not easy to wear and has long service life, and meanwhile, a resealing effect is added for the joint.
Drawings
FIG. 1 is a cross-sectional view of a thread anti-galling structure of the present application;
FIG. 2 is a detail view of the part a structure of FIG. 1;
FIG. 3 is a detail view of the part b of FIG. 1;
FIG. 4 is a detail view of the partial c-structure of FIG. 1;
The meaning of each reference numeral in the drawings: 1. a joint; 11. an external thread; 12. sealing grooves; 13. a guide groove; 14. a positioning groove; 141. a first chamfer; 142. a second chamfer; 15. limiting shaft shoulders; 2. a housing; 21. an internal thread; 22. positioning the step; 23. an inner chamfer; 24. a limit step; 3. a guide belt; 4. and (3) sealing rings.
Detailed Description
The following detailed description of the utility model, taken in conjunction with the accompanying drawings, will provide those skilled in the art with a more readily understood understanding of how the utility model may be practiced. While the present utility model has been described in connection with the preferred embodiments thereof, these embodiments are set forth only and are not intended to limit the scope of the utility model.
As shown in fig. 1, in order to overcome the defects in the prior art, the threaded anti-sticking structure with the guide belt comprises a connector 1, a housing 2, a guide belt 3 and a sealing ring 4, wherein the connector 1 is connected with the housing 2 through threads, and the guide belt 3 and the sealing ring 4 are respectively arranged between the connector 1 and the housing 2.
The outer circumference of one end of the joint 1 is provided with an external thread 11, the inner wall of one end of the shell 2 is provided with an internal thread 21, the shell 2 is sleeved outside the joint 1, and the external thread 11 of the joint 1 is in threaded connection with the internal thread 21 of the shell 2.
The guide belt 3 and the sealing ring 4 are respectively of annular structures, the guide belt 3 and the sealing ring 4 are sleeved outside the joint 1, and the shell 2 is respectively sleeved outside the guide belt 3 and the sealing ring 4. Along the axial direction X of the joint 1, the guide belt 3 is arranged on one side of the external thread 11, which is away from the shell 2, and the sealing ring 4 is sleeved on one side of the guide belt 3, which is away from the external thread 11. The guide belt 3 is made of a rigid material, and the guide belt 3 is supported between the connector 1 and the housing 2, so that a gap is formed between the connector 1 and the housing 2, and thread gluing of the connector 1 and the housing 2 is avoided. The sealing ring 4 is made of elastic materials, the sealing ring 4 enables the joint 1 to be in sealing connection with the shell 2, and corrosive media are prevented from entering between the joint 1 and the shell 2, so that the service lives of the guide belt 3, the external threads 11 and the internal threads 21 are prolonged.
In this embodiment, in order to better exert the anti-sticking effect of the guide belt 3, the guide belt 3 is made of polytetrafluoroethylene copper powder, and has the advantages of excellent mechanical properties, corrosion resistance, high temperature resistance and the like as a high-performance wear-resistant material. In order to make screwing of the joint 1 and the housing 2 easier, the surface of the guide belt 3 is coated with grease. It will be appreciated that in some other embodiments, the guide belt 3 may be made of other materials, such as stainless steel, plastic, etc., which are not limited herein.
As shown in fig. 1 and 2, the outer circumferential surface of the joint 1 is provided with a seal groove 12 and a guide groove 13, the guide groove 13 is arranged on one side of the external thread 11 deviating from the housing 2 along the axial direction X of the joint 1, the seal groove 12 is arranged on one side of the guide groove 13 deviating from the external thread 11, the seal ring 4 is arranged in the seal groove 12, and the guide belt 3 is arranged in the guide groove 13.
By adopting the technical scheme, the guide groove 13 and the guide belt 3 with the guide supporting function are newly added at the rear end of the external thread 11 of the joint 1, and a certain space is supported between the contact surfaces of the joints 1 and the spigot of the non-threaded section of the shell 2, so that the contact area between threads is reduced, and compared with the condition of no guide belt 3 in the prior art, a certain anti-sticking effect can be achieved at the spigot of the non-threaded section of the joint 1 and the shell 2; meanwhile, the contact surface friction is caused by the eccentricity of the joint 1 without the guide belt 3 and the seam allowance of the non-threaded section of the shell 2, so that the direct contact of the seam allowance of the two non-threaded sections can be avoided after the guide belt 3 is added, the righting effect is achieved, and the eccentric amount is reduced; in addition, the guide belt 3 having good wear resistance can also function as a seal.
As a specific choice of the thread, the external thread 11 and the internal thread 21 may be conical pipe threads, which are a common pipe thread connection mode, and the thread form of the conical pipe threads is conical thread form, so that more reliable connection can be provided under high pressure and high temperature, and meanwhile, the problem of air leakage or falling off can be effectively prevented. Of course, in some other embodiments, the external threads 11 and the internal threads 21 may be threads of other structures, such as triangular threads, trapezoidal threads, etc., which are not limited herein.
The outer peripheral surface of the joint 1 is also provided with a limiting shaft shoulder 15, the limiting shaft shoulder 15 is arranged on one side of the sealing ring 4, which is away from the guide belt 3, and when the joint 1 and the shell 2 are screwed, one end of the shell 2 is abutted with the limiting shaft shoulder 15. Specifically, the outer circumference of the joint 1 is stepped, and the outer diameter of one end of the joint 1 facing the shell 2 is smaller than the outer diameter of the other end of the joint 1, so that a limiting shaft shoulder 15 is formed, and the limiting shaft shoulder 15 is used for limiting the screwing depth of the shell 2 and the joint 1, so that the shell 2 and the joint 1 are prevented from being damaged due to excessive screwing. The screwing depth of the shell 2 and the joint 1 is the depth of the shell 2 sleeved on the joint 1 along the axial direction X of the joint 1.
As shown in fig. 3 and 4, the inner wall of the shell 2 is provided with a positioning step 22, and the positioning step 22 is arranged at one end of the internal thread 21, which is close to the joint 1; the outer peripheral surface of the joint 1 is provided with a positioning groove 14 matched with a positioning step 22, the positioning groove 14 is arranged between the external thread 11 and the guide belt 3, and the positioning step 22 is clamped in the positioning groove 14. The positioning step 22 and the positioning groove 14 play a limiting role when screwing the connector 1 and the shell 2, and damage caused by over tightening screwing the connector 1 and the shell 2 is prevented.
The positioning groove 14 is close to the terminal surface of external screw thread 11 and is equipped with first chamfer 141, and the terminal surface that the positioning groove 14 kept away from external screw thread 11 is equipped with second chamfer 142, and first chamfer 141 and second chamfer 142 can set up simultaneously, also can optionally one set up, thereby first chamfer 141 and second chamfer 142 have all played the effect that avoids stress concentration and improve product life.
As shown in fig. 4, the inner wall of the housing 2 is further provided with a limiting step 24, the limiting step 24 is arranged at one end of the internal thread 21, which is away from the positioning step 22, and when the joint 1 and the housing 2 are screwed, one end of the joint 1 is abutted with the limiting step 24. Specifically, the inner wall of the housing 2 is stepped, and the inner diameter of the housing 2 facing one end of the joint 1 is larger than the inner diameter of the other end thereof, so that a limiting step 24 is formed, and the limiting shoulder 15 further limits the screwing depth of the housing 2 and the joint 1.
The end face of the housing 2 facing the joint 1 is also provided with an internal chamfer 23, which contributes to a better alignment of the housing 2 when it is screwed with the joint 1.
In general, a guide groove 13 and a guide belt 3 with guide supporting function are newly added at the rear end of the external thread 11 of the joint 1, a section of space is supported between contact surfaces of the joints 1 and the seam allowance of the non-threaded section of the shell 2, so that the contact area between threads is reduced, and compared with the condition of no guide belt 3 in the prior art, a certain anti-sticking effect can be achieved at the seam allowance of the non-threaded section of the joints 1 and the shell 2, the service life of related parts is prolonged, and the guide belt 3 has lower cost and better economy; the joint 1 without the guide belt 3 and the seam allowance of the non-threaded section of the shell 2 are eccentric, so that the contact surface friction is caused, the seam allowance of the two non-threaded sections can be prevented from being directly contacted after the guide belt 3 is added, the righting effect is achieved, and the eccentric amount is reduced; finally, the guide belt 3 has good wear resistance and sealing effect, is not easy to wear and has long service life, and meanwhile, a resealing effect is added to the joint.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a contain anti-sticking structure of screw thread of guiding band which characterized in that: comprises a joint (1), a shell (2), a guide belt (3) and a sealing ring (4);
An external thread (11) is arranged on the outer peripheral surface of one end of the joint (1), and the shell (2) is sleeved outside the joint (1) and is in threaded connection with the external thread (11);
The guide belt (3) is sleeved outside the connector (1) and is arranged on one side of the external thread (11) away from the shell (2), the shell (2) is sleeved outside the guide belt (3), and the guide belt (3) is used for enabling the connector (1) to form a gap between the shells (2);
The sealing ring (4) is sleeved outside the connector (1) and is arranged on one side, deviating from the external thread (11), of the guide belt (3), the shell (2) is sleeved outside the sealing ring (4), and the sealing ring (4) is used for sealing and connecting the connector (1) with the shell (2).
2. The guide belt-containing threaded anti-galling structure according to claim 1, wherein: the outer peripheral surface of the connector (1) is also provided with a guide groove (13), the guide groove (13) is arranged on one side of the external thread (11) deviating from the shell (2), and the guide belt (3) is arranged in the guide groove (13).
3. The guide belt-containing threaded anti-galling structure according to claim 2, wherein: the outer peripheral surface of the joint (1) is also provided with a sealing groove (12), the sealing groove (12) is arranged on one side, deviating from the external thread (11), of the guide groove (13), and the sealing ring (4) is arranged in the sealing groove (12).
4. The guide belt-containing threaded anti-galling structure according to claim 1, wherein: an inner wall of the shell (2) is provided with an inner thread (21), and the inner thread (21) is connected with the outer thread (11);
The inner wall of the shell (2) is also provided with a positioning step (22), and the positioning step (22) is arranged at one end of the internal thread (21) close to the joint (1);
The outer peripheral surface of the connector (1) is also provided with a positioning groove (14), the positioning groove (14) is arranged between the external thread (11) and the guide belt (3), and the positioning step (22) is clamped in the positioning groove (14).
5. The guide belt-containing threaded anti-galling structure according to claim 4, wherein: the end face, close to the external thread (11), of the positioning groove (14) is provided with a first chamfer (141), and/or the end face, far away from the external thread (11), of the positioning groove (14) is provided with a second chamfer (142).
6. The guide belt-containing threaded anti-galling structure according to claim 4, wherein: the inner wall of the shell (2) is also provided with a limiting step (24), the limiting step (24) is arranged at one end of the internal thread (21) deviating from the positioning step (22), and one end of the joint (1) is abutted against the limiting step (24).
7. The guide belt-containing threaded anti-galling structure according to any one of claims 1 to 6, characterized in that: the outer peripheral surface of the connector (1) is also provided with a limiting shaft shoulder (15), the limiting shaft shoulder (15) is arranged on one side, deviating from the guide belt (3), of the sealing ring (4), and one end of the shell (2) is abutted to the limiting shaft shoulder (15).
8. The guide belt-containing threaded anti-galling structure according to any one of claims 1 to 6, characterized in that: the guide belt (3) is made of polytetrafluoroethylene copper powder.
9. The guide belt-containing threaded anti-galling structure according to any one of claims 1 to 6, characterized in that: the surface of the guide belt (3) is coated with lubricating grease.
10. The guide belt-containing threaded anti-galling structure according to claim 1, wherein: an inner chamfer (23) is arranged on the end face of the shell (2) facing the joint (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323201731.6U CN221120583U (en) | 2023-11-27 | 2023-11-27 | Thread anti-sticking structure with guide belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323201731.6U CN221120583U (en) | 2023-11-27 | 2023-11-27 | Thread anti-sticking structure with guide belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221120583U true CN221120583U (en) | 2024-06-11 |
Family
ID=91343075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323201731.6U Active CN221120583U (en) | 2023-11-27 | 2023-11-27 | Thread anti-sticking structure with guide belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221120583U (en) |
-
2023
- 2023-11-27 CN CN202323201731.6U patent/CN221120583U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102187139B (en) | Threaded joint for steel pipes | |
| JP4300187B2 (en) | Threaded pipe fittings | |
| JP4162651B2 (en) | Threaded fittings | |
| CA2709580C (en) | Sealed threaded tubular connection which is resistant to successive pressure loads | |
| CN204782815U (en) | Utmost point thick wall screwed joint for oil well pipe | |
| CN1653290A (en) | Threaded Pipe Fittings | |
| CN110043196B (en) | End face seal ring structure of external thread joint of oil well pipe | |
| CN202171002U (en) | Conical surface mechanical sealing device | |
| US6957834B2 (en) | Threaded joint for pipes | |
| CN221120583U (en) | Thread anti-sticking structure with guide belt | |
| WO2014125545A1 (en) | Threaded joint for pipe | |
| CN221482962U (en) | Oil pipe buckling joint device | |
| CN204852337U (en) | High performance multipurpose cusp Y shape composite seal device | |
| CN107631007A (en) | A kind of screw rod drilling tool seal transmission shaft assembly | |
| RU166700U1 (en) | HIGH SEALED THREADED JOINT CONNECTION | |
| CN210978876U (en) | High-rotating-speed split type rotary joint | |
| CN212509951U (en) | Maintenance-free rotary joint of polytetrafluoroethylene-lined oil filling riser | |
| CN204610551U (en) | A kind of sliding bearing | |
| CN201632609U (en) | Water-cooling rotary joint used for continuous casting rollers | |
| CN104847899A (en) | PTFE (polytetrafluoroethylene) oil seal of multi-group oil return lines | |
| CN216479497U (en) | High-pressure high-speed stainless steel rotary joint for chemical industry | |
| CN216343899U (en) | High-performance titanium connecting sealing ring for deep-sea oil drilling and production equipment | |
| CN206861112U (en) | A kind of novel high speed high pressure bearing-free swivel joint | |
| CN212079226U (en) | Anticorrosion sucker rod | |
| CN206092485U (en) | Water pump of wear -resisting pump axle and applied this pump shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |