CN115405768A - Seamless steel pipe connector for oil field - Google Patents
Seamless steel pipe connector for oil field Download PDFInfo
- Publication number
- CN115405768A CN115405768A CN202211352544.5A CN202211352544A CN115405768A CN 115405768 A CN115405768 A CN 115405768A CN 202211352544 A CN202211352544 A CN 202211352544A CN 115405768 A CN115405768 A CN 115405768A
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- fixedly connected
- connecting pipe
- wall
- oil field
- 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.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 85
- 239000010959 steel Substances 0.000 title claims abstract description 85
- 238000007789 sealing Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000007779 soft material Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- 239000012634 fragment Substances 0.000 abstract description 10
- 230000006872 improvement Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 28
- 239000010779 crude oil Substances 0.000 description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000309551 Arthraxon hispidus Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/08—Screw-threaded joints; Forms of screw-threads for such joints with supplementary elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
Abstract
The invention discloses a seamless steel tube connector for an oil field, which belongs to the field of seamless steel tubes, wherein a fixing groove is formed in one end of a steel tube, a thread groove is formed in the inner wall of the fixing groove, and an annular groove is formed in the position, close to one end, of the outer circular surface of the steel tube; the equal fixedly connected with inner tube in both ends about the connecting pipe, the inner wall of inner tube and the equal fixedly connected with thread tooth of outer wall, the inner wall and the inner tube threaded connection of fixed slot, both ends are located the outside fixedly connected with outer tube of inner tube about the connecting pipe, can realize through disposable rotation inner tube, realize that inner tube and fixed slot carry out double-deck thread tightening, can improve the fixed effect of connecting pipe and steel pipe, in the fixed back joint of inner tube can enter into the ring channel, then tighten up the shell fragment board with the clamp, the shell fragment board can press from both sides the outer wall of tight steel pipe under the effort of clamp to further improvement connecting pipe and the fixed effect of steel pipe.
Description
Technical Field
The invention relates to the field of seamless steel pipes, in particular to a seamless steel pipe connector for an oil field.
Background
The steel pipe is often used to transport oil or natural gas when extracting oil or natural gas in the oil well, because the steel pipe has characteristics such as hardness height, non-deformable, and the nature is stable, in order to avoid the oil and the natural gas of extraction to appear revealing, the steel pipe that uses generally is seamless steel pipe, can fine assurance oil or natural gas transport.
Chinese patent application No. CN107503507A discloses a steel pipe connector, which is inserted into a connector through a steel pipe, and then a nut is finally fixed to the steel pipe through a bolt penetrating connector to connect the steel pipe, wherein it is difficult to ensure the sealing between two sets of steel pipes in the connector, and the bolt penetrates through the steel pipe, so that when a substance is transferred inside the steel pipe, the penetrating bolt blocks the substance transferred inside the steel pipe.
In the above-mentioned publication, when connecting two steel pipes, it is necessary to insert the bolt after the bolt hole on the steel pipe is aligned with the bolt hole on the connecting member, and the bolt hole is complicated in step operation when being aligned, and it takes time and labor to reduce the work efficiency, and the connection effect is not good.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a seamless steel pipe connector for an oil field, which can realize double-layer thread fixing of an inner pipe and a fixed groove by rotating the inner pipe at one time, can improve the fixing effect of a connecting pipe and a steel pipe, the connector can enter an annular groove after the inner pipe is fixed, then a clamp is used for tightly tightening a spring plate, and the spring plate can clamp the outer wall of the steel pipe under the acting force of the clamp, so that the fixing effect of the connecting pipe and the steel pipe is further improved, and the operation steps of the connecting pipe and the steel pipe are simple when the connecting pipe and the steel pipe are connected.
In order to solve the above problems, the present invention adopts the following technical solutions.
The utility model provides an oil field is with seamless steel pipe connector, includes connecting pipe and steel pipe, the fixed slot has been seted up to the one end of steel pipe, the thread groove has been seted up to the inner wall of fixed slot. An annular groove is formed in the position, close to one end, of the outer circular surface of the steel pipe;
the utility model discloses a joint, including the connecting pipe, the equal fixedly connected with inner tube in both ends about the connecting pipe, the inner wall of inner tube and the equal fixedly connected with thread tooth of outer wall, the inner wall and the inner tube threaded connection of fixed slot, both ends are located the outside fixedly connected with outer tube of inner tube about the connecting pipe, the one end fixedly connected with evenly distributed's of outer tube bullet piece board, the side surface of bullet piece board is close to one end position fixedly connected with joint.
Furthermore, the outer disc fixedly connected with cushion chamber of connecting pipe, the inside sliding connection of lateral wall of connecting pipe has the pressure release pole, the lower extreme fixedly connected with spring of pressure release pole, the lower extreme and the cushion chamber inner wall fixed connection of spring.
Further, be provided with the gasbag in the cushion chamber, the gasbag adopts elastic material to make and forms, the gasbag cup joints the setting with the spring, fixedly connected with is dull and stereotyped between pressure relief pole and the spring, the top position that the flat board is located the gasbag, the lower extreme of gasbag is connected with the whistle, and whistle and gasbag intercommunication, the lower extreme of whistle runs through the cushion chamber and extends to the outside.
Furthermore, the lower end of the whistle is fixedly connected with a conical cover.
Furthermore, the inner wall of the lower end of the spring is wound with a limiting rod, and the lower end of the limiting rod is fixedly connected with the inner wall of the buffer chamber.
Furthermore, the outer circular surface of the pressure relief rod is fixedly connected with a sliding sealing ring, and the outer circular surface of the sliding sealing ring is respectively connected with the connecting pipe and the buffer chamber in a sliding manner.
Furthermore, an annular air cushion is arranged in the fixing groove, the interior of the annular air cushion is in a hollow design, and the annular air cushion is made of soft materials.
Furthermore, the outer surface of one side of the elastic sheet plate is provided with two side clamp grooves.
Furthermore, the inner wall of the connecting pipe is fixedly connected with micro raised heads which are uniformly distributed.
Furthermore, a layer of polytetrafluoroethylene coating is coated on the outer wall of the connecting pipe and the outer surface of the micro raised head.
Compared with the prior art, the invention has the advantages that:
1. this scheme is through once only rotating the inner tube, realizes that inner tube and fixed slot carry out double-deck thread tightening, can improve the fixed effect of connecting pipe and steel pipe, in the joint head can enter into the ring channel after the inner tube is fixed, then tighten up the shell fragment board with the clamp, the shell fragment board can press from both sides the outer wall of tight steel pipe under the effort of clamp to further improvement connecting pipe and the fixed effect of steel pipe, and both operating procedure is simple when connecting.
2. This scheme is when the increase in the twinkling of an eye at the oil pressure in the steel pipe, and the oil pressure can promote the pressure release pole to remove to the surge chamber, is sharing the oil pressure in the connecting pipe when the pressure release pole removes to the buffer chamber to avoid the junction oil pressure of connecting pipe and steel pipe too big, cause the problem of revealing.
3. This scheme when the oil pressure in the steel pipe lasts the increase, the oil pressure can continuously promote the pressure release pole and remove to the buffer chamber, also can drive dull and stereotyped the removal when removing, and the gasbag can be extruded to last dull and stereotyped, and the gasbag receives inside gas after the extrusion can be followed whistle and is discharged, and the whistle can send sharp-pointed sound, the warning staff that can be timely, and the inside pressure of steel pipe is too big, needs investigate the pipeline.
4. This scheme is when the speed of revealing of crude oil is too fast, and the velocity of flow that crude oil process annular air cushion department is too big, and is little according to the big pressure of velocity of flow, just so causes that the inside pressure of annular air cushion is greater than outside pressure little, and the annular air cushion can expand to play the effect that certain degree hinders crude oil flow, avoid the too fast that crude oil reveals.
5. When crude oil passes through the inside of the connecting pipe, the tension of the crude oil can not contact the area between every two micro raised heads, so that a very small air gap is formed between every two micro raised heads, the crude oil is prevented from contacting the inner wall of the connecting pipe, the crude oil and the inner wall of the connecting pipe are not contacted, the problem that dirty objects are stuck on the inner wall of the connecting pipe is avoided, and the problem that the inside of the connecting pipe is blocked is avoided.
Drawings
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is an enlarged view of point A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view of the overall structure of the present invention;
FIG. 4 is an enlarged view of point B of FIG. 3 in accordance with the present invention;
FIG. 5 is an enlarged view of point C of FIG. 3 in accordance with the present invention;
FIG. 6 is a perspective view of the bladder of the present invention;
figure 7 is a cross-sectional view of a connecting tube of the present invention.
The reference numbers in the figures illustrate:
1. a connecting pipe; 2. an inner tube; 3. an outer tube; 4. a steel pipe; 5. fixing grooves; 6. a spring plate; 7. a clamping head; 8. an annular groove; 9. a pressure relief lever; 10. a buffer chamber; 11. a flat plate; 12. a spring; 13. an air bag; 14. a whistle; 15. a limiting rod; 16. an annular air cushion; 17. a clamp groove; 18. sliding the seal ring; 19. a micro raised head; 20. a conical cover.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 4, a seamless steel pipe joint for an oil field includes a connecting pipe 1 and a steel pipe 4, wherein a fixing groove 5 is formed at one end of the steel pipe 4, and a thread groove is formed on an inner wall of the fixing groove 5. An annular groove 8 is formed in the position, close to one end, of the outer circular surface of the steel pipe 4;
equal fixedly connected with inner tube 2 in both ends about connecting pipe 1, the inner wall of inner tube 2 and the equal fixedly connected with thread tooth of outer wall, the inner wall and the 2 threaded connection of inner tube of fixed slot 5, the outside fixedly connected with outer tube 3 that both ends are located inner tube 2 about connecting pipe 1, the one end fixedly connected with evenly distributed's of outer tube 3 shell fragment board 6, one end fixedly connected with joint 7 is close to the side surface of shell fragment board 6.
When two steel pipes 4 need to be connected, at first aim at fixed slot 5 to inner tube 2, then rotate connecting pipe 1, the inner wall and the outer wall of inner tube 2 all with the inner wall threaded connection of fixed slot 5, finally fix together, through two-layer screw fixation, the connectivity between connecting pipe 1 and steel pipe 4 has been strengthened, shell fragment board 6 can paste the outer disc at steel pipe 4 after both are fixed, its joint 7 can enter into ring channel 8, then two clamps of shell fragment board 6 outside cover, then tighten up the clamp, shell fragment board 6 can press from both sides tight steel pipe 4's outer wall under the effort of clamp, thereby further improve the fixed effect of connecting pipe 1 and steel pipe 4, and both operation steps are simple when connecting, after connecting pipe 1 and steel pipe 4 are connected, and the clearance of junction is tortuous to make a round trip, can be fine form labyrinth seal, thereby improve the leakproofness of junction, avoid the problem of revealing between them to appear, in addition when connecting pipe 1 and steel pipe 4 take place lateral shifting, because clamp 7 is in ring channel 8, both lateral shifting receive the inner wall, so can's separation is difficult to remove after fixing between steel pipe 1 and steel pipe 4.
Referring to fig. 5, as one embodiment of the present invention, a buffer chamber 10 is fixedly connected to an outer circumferential surface of a connection pipe 1, a pressure release rod 9 is slidably connected to an inside of a sidewall of the connection pipe 1, a spring 12 is fixedly connected to a lower end of the pressure release rod 9, and a lower end of the spring 12 is fixedly connected to an inner wall of the buffer chamber 10.
Although the connecting pipe 1 and the steel pipe 4 are well fixed, the joint is relatively weak, when the oil pressure in the steel pipe 4 is increased instantly, impact is caused on the joint of the connecting pipe 1 and the steel pipe 4, and leakage is easily caused at the joint after a long time.
Referring to fig. 5 and 6, in one embodiment of the present invention, an air bag 13 is disposed in a buffer chamber 10, the air bag 13 is made of an elastic material, the air bag 13 is sleeved with a spring 12, a flat plate 11 is fixedly connected between a pressure relief rod 9 and the spring 12, the flat plate 11 is located above the air bag 13, a whistle 14 is connected to the lower end of the air bag 13, the whistle 14 is communicated with the air bag 13, and the lower end of the whistle 14 penetrates through the buffer chamber 10 and extends to the outside.
If the oil pressure in the connecting pipe 1 is continuously increased, generally, the steel pipe 4 is blocked, the oil pump continuously outputs oil pressure, so that the oil pressure is continuously increased, and if a worker does not find the oil pressure in time, the leakage at the connecting part between the connecting pipe 1 and the steel pipe 4 is easily caused, the leakage at the connecting part is generated, the oil pressure can continuously push the pressure relief rod 9 to move into the buffer chamber 10, the flat plate 11 is driven to move while moving, finally, the flat plate 11 can extrude the air bag 13, the air in the air bag 13 after extrusion can be discharged from the whistle 14, and the whistle 14 can make a sharp sound, so that the worker can be timely reminded, the pressure in the steel pipe 4 is too high, the pipeline needs to be checked, in addition, when the pressure relief rod 9 returns to the initial position, the air bag 13 is made of an elastic material, and the air bag 13 can automatically recover to the original state.
Referring to fig. 1, a cone-shaped cover 20 is fixedly connected to the lower end of the whistle 14 as an embodiment of the present invention.
The sound emitted by whistle 14 is amplified by conical cover 20, further facilitating the audible alarm sound for the staff.
Referring to fig. 5, a stopper rod 15 is wound around the inner wall of the lower end of the spring 12, and the lower end of the stopper rod 15 is fixedly connected to the inner wall of the buffer chamber 10.
When the spring 12 is compressed, if the amount of deformation of the spring 12 is too large, the spring 12 is easily deformed, and the limiting rod 15 is installed to limit the downward movement distance of the pressure relief rod 9, so that the spring 12 is protected.
Referring to fig. 5, as an embodiment of the present invention, a sliding packing 18 is fixedly connected to an outer circumferential surface of the pressure relief rod 9, and the outer circumferential surface of the sliding packing 18 is slidably connected to the connection pipe 1 and the buffer chamber 10, respectively.
Through installation slip sealing washer 18, when pressure release pole 9 did reciprocate, also can be fine play with connecting pipe 1, buffer chamber 10 sealed to avoid the crude oil in the connecting pipe 1 to reveal away from the junction of pressure release pole 9.
Referring to fig. 4, an annular cushion 16 is disposed in the fixing groove 5, the annular cushion 16 is hollow, and the annular cushion 16 is made of a soft material.
When the inner pipe 2 is fixed in the fixing groove 5, the inner pipe 2 can pressurize the annular air cushion 16, and the annular air cushion 16 plays a role of a sealing gasket; when crude oil flows from the clearance between inner tube 2 and the fixed slot 5, leak has also appeared, if the speed of leaking is too big, the velocity of flow of crude oil through annular air cushion 16 department is too big, and big pressure is little according to the velocity of flow, just so causes that the inside pressure of annular air cushion 16 is greater than outside pressure for a short time, and annular air cushion 16 can expand to play the effect that certain degree hinders crude oil flow, avoid crude oil leakage too fast.
Referring to fig. 2, as an embodiment of the present invention, a clip groove 17 is formed on an outer surface of one side of the spring plate 6.
Through seting up clamp groove 17, put the clamp in clamp groove 17 when fixed clamp, can avoid the clamp after fixing to slide on shell fragment board 6, play the effect of the fixed effect of protection clamp, also be the fixed effect of protection connecting pipe 1.
Referring to fig. 7, as an embodiment of the present invention, micro bosses 19 are fixedly coupled to an inner wall of the connection pipe 1 to be uniformly distributed.
When crude oil is through connecting pipe 1 inside, the filth in its crude oil glues in connecting pipe 1 inner wall easily, along with the increase of the filth volume of gluing, cause connecting pipe 1 to block up very easily, through the miniature plush head 19 of inner wall installation at connecting pipe 1, the size of miniature plush head 19 is at the nanometer level, when crude oil is through connecting pipe 1 in, because the unable area that contacts miniature plush head 19 two liang of each other of tension of crude oil, cause miniature plush head 19 two liang of each other to form a very little air gap, the principle of this department is similar to the surface of lotus leaf and is not stained with silt, thereby the contact of crude oil with connecting pipe 1 inner wall has been hindered, both contactless have just avoided the filth to glue the problem at connecting pipe 1 inner wall, the problem of jam has been avoided the inside of connecting pipe 1 to appear.
In one embodiment of the present invention, a layer of teflon paint is applied to both the outer wall of the connecting tube 1 and the outer surface of the microprotrusion 19.
By coating a layer of polytetrafluoroethylene coating, the inner wall and the outer wall of the connecting pipe 1 can be prevented from being corroded, if the micro raised head 19 is corroded, the inner wall of the connecting pipe 1 loses the function of not contaminating turbidity, and the function of protecting the micro raised head 19 can be achieved by coating the polytetrafluoroethylene coating.
The working principle is as follows: when two steel pipes 4 need to be connected, firstly, the inner pipe 2 is aligned to the fixing groove 5, then the connecting pipe 1 is rotated, the inner wall and the outer wall of the inner pipe 2 are both in threaded connection with the inner wall of the fixing groove 5 and are finally fixed together, the connectivity between the connecting pipe 1 and the steel pipes 4 is reinforced through two layers of threaded fixation, after the two layers of threaded fixation, the elastic sheet plate 6 can be attached to the outer circular surface of the steel pipes 4, the clamping joint 7 of the elastic sheet plate can enter the annular groove 8, then the two clamping hoops are sleeved outside the elastic sheet plate 6, then the clamping hoops are tightened, the elastic sheet plate 6 can clamp the outer wall of the steel pipes 4 under the action of the clamping hoops, so that the fixing effect of the connecting pipe 1 and the steel pipes 4 is further improved, the two connecting pipes are simple in operation steps when being connected, after the connecting pipe 1 and the steel pipes 4 are connected, and gaps at the connecting part can be separated to form labyrinth type sealing, the sealing performance of the connecting part is improved, the leakage problem of the connecting part at the connecting part is avoided, and when the connecting pipe 1 and the steel pipes 4 are transversely moved, the connecting pipe 1 and the steel pipes 4 can not be easily disconnected after being fixed;
when the oil pressure in steel pipe 4 increases in the twinkling of an eye, the oil pressure can promote pressure release pole 9 and remove to surge chamber 10, pressure release pole 9 can compression spring 12 simultaneously, be exactly sharing the oil pressure in connecting pipe 1 when pressure release pole 9 removes to surge chamber 10, thereby avoid the junction oil pressure of connecting pipe 1 and steel pipe 4 too big, cause the problem of revealing, if the oil pressure in connecting pipe 1 lasts the increase, the oil pressure can continuously promote pressure release pole 9 and remove to surge chamber 10, also can drive dull and stereotyped 11 and remove when removing, last dull and stereotyped 11 can extrude gasbag 13, gasbag 13 receives inside gas after the extrusion and can follow whistle 14 and discharge, whistle 14 can send sharp-pointed sound, the warning staff that can be timely.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. The utility model provides an oil field is with seamless steel pipe connector, includes connecting pipe (1) and steel pipe (4), its characterized in that: a fixing groove (5) is formed in one end of the steel pipe (4), a thread groove is formed in the inner wall of the fixing groove (5), and an annular groove (8) is formed in the position, close to one end, of the outer circular surface of the steel pipe (4);
the connecting pipe is characterized in that an inner pipe (2) is fixedly connected to the left end and the right end of the connecting pipe (1), inner walls and outer walls of the inner pipe (2) are fixedly connected with thread teeth, inner walls and inner pipes (2) are in threaded connection with a fixing groove (5), outer fixedly connected with outer pipes (3) are located on the left end and the right end of the connecting pipe (1) and located on the inner pipes (2), elastic sheet plates (6) are evenly distributed on one ends of the outer pipes (3), and side surfaces of the elastic sheet plates (6) are close to one end position fixedly connected with clamping joints (7).
2. The seamless steel pipe joint for the oil field according to claim 1, characterized in that: the outer disc fixedly connected with surge chamber (10) of connecting pipe (1), the inside sliding connection of lateral wall of connecting pipe (1) has pressure relief pole (9), the lower extreme fixedly connected with spring (12) of pressure relief pole (9), the lower extreme and surge chamber (10) inner wall fixed connection of spring (12).
3. The seamless steel pipe joint for the oil field according to claim 2, characterized in that: be provided with gasbag (13) in surge chamber (10), gasbag (13) adopt elastic material to make and form, gasbag (13) cup joint the setting with spring (12), fixedly connected with is dull and stereotyped (11) between pressure relief pole (9) and spring (12), dull and stereotyped (11) are located the top position of gasbag (13), the lower extreme of gasbag (13) is connected with whistle (14), and whistle (14) and gasbag (13) intercommunication, the lower extreme of whistle (14) runs through surge chamber (10) and extends to the outside.
4. The seamless steel pipe joint for the oil field according to claim 3, characterized in that: the lower end of the whistle (14) is fixedly connected with a conical cover (20).
5. The seamless steel pipe joint for the oil field according to claim 2, characterized in that: the lower end inner wall of the spring (12) is in winding connection with a limiting rod (15), and the lower end of the limiting rod (15) is fixedly connected with the inner wall of the buffer chamber (10).
6. The seamless steel pipe joint for the oil field according to claim 2, characterized in that: the outer circular surface of the pressure relief rod (9) is fixedly connected with a sliding sealing ring (18), and the outer circular surface of the sliding sealing ring (18) is respectively connected with the connecting pipe (1) and the buffer chamber (10) in a sliding manner.
7. The seamless steel pipe joint for the oil field according to claim 1, characterized in that: an annular air cushion (16) is arranged in the fixing groove (5), the interior of the annular air cushion (16) is of a hollow design, and the annular air cushion (16) is made of soft materials.
8. The seamless steel pipe joint for the oil field according to claim 1, characterized in that: the outer surface of one side of the spring plate (6) is provided with two side clamp grooves (17).
9. The seamless steel pipe joint for the oil field according to claim 1, characterized in that: the inner wall of the connecting pipe (1) is fixedly connected with micro raised heads (19) which are uniformly distributed.
10. The seamless steel pipe joint for the oil field according to claim 9, characterized in that: and a layer of polytetrafluoroethylene coating is smeared on the outer wall of the connecting pipe (1) and the outer surface of the micro raised head (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211352544.5A CN115405768A (en) | 2022-11-01 | 2022-11-01 | Seamless steel pipe connector for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211352544.5A CN115405768A (en) | 2022-11-01 | 2022-11-01 | Seamless steel pipe connector for oil field |
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| Publication Number | Publication Date |
|---|---|
| CN115405768A true CN115405768A (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211352544.5A Pending CN115405768A (en) | 2022-11-01 | 2022-11-01 | Seamless steel pipe connector for oil field |
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| CN (1) | CN115405768A (en) |
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