CN204851092U - Oil pipe and sleeve pipe sealing connection device and body and coupling - Google Patents
Oil pipe and sleeve pipe sealing connection device and body and coupling Download PDFInfo
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- CN204851092U CN204851092U CN201520362628.6U CN201520362628U CN204851092U CN 204851092 U CN204851092 U CN 204851092U CN 201520362628 U CN201520362628 U CN 201520362628U CN 204851092 U CN204851092 U CN 204851092U
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Abstract
The utility model discloses an oil pipe and sleeve pipe sealing connection device and body and coupling relates to the sealing technique field, and its structure includes body and coupling, the both ends symmetry of body be provided with the pin thread, the both ends symmetry of coupling be provided with the box, the terminal surface of pin thread annular nose's tip forms the step face of slope, and the lateral surface of pin thread annular nose's tip is followed the tip and inwards is equipped with sealed face and external screw thread in proper order, is equipped with the tapered transition face on pin thread annular nose's the inside wall, the pin thread annular nose screw in box inner ring cavity. The utility model discloses the leakproofness is good, tensile strength is high, is applicable to under the abominable geological conditions to prevent leaking to the sealed of body joint department.
Description
Technical field
The utility model relates to technical field of sealing technology, specifically ATPM-I (safe and sound petroleum machinery-1) type oil pipe and bobbin seal linkage and body and a box cupling, is applicable to oil pipe and sleeve pipe under severe geological conditions to the sealing anti-leak at pipe joint place.
Background technology
Improve constantly for comparatively dark oil, the sealing requirements of gas well to pipeline junction now, the general direct machining screw of pipe collar that adopts connects at present, and the tightness degree that its sealing characteristics is only confined to threaded engagement plays sealing effectiveness, there is larger disclosure risk.
There is the problem such as sealing and tensile strength in tradition API screw thread, tradition API screw thread gas sealing ability is very poor, well containing well locations such as hydrogen sulfide, carbon dioxide and chlorions is not suitable with, needs a kind of sealing device that can be applied to the unconformable well location of traditional API screw thread at present.
Utility model content
For the problems referred to above, the purpose of this utility model is to provide a kind of ATPM-I type oil pipe and bobbin seal linkage and body and box cupling, this device can overcome above-mentioned shortcoming, and good airproof performance, tensile strength are high, is applicable to the sealing anti-leak to pipe joint place under severe geological conditions.
The technical scheme in the invention for solving the technical problem is: ATPM-I type oil pipe and bobbin seal linkage, comprise body and box cupling,
The two ends symmetry of described body be provided with pin thread annular projection, the two ends symmetry of described box cupling be provided with ring cavity in box;
The end face of the end of pin thread annular projection forms the step surface of inclination, the lateral surface of the end of pin thread annular projection is inwardly provided with sealing surface and external screw thread successively from end, described sealing surface is taper surface, forms round-corner transition between step surface and sealing surface; The inner end diameter of pin thread annular projection becomes large and is provided with tapering transition face in internal diameter change place;
In box, ring cavity is inwardly disposed with the box internal thread be meshed with external screw thread, the box sealing surface be sealed and matched with sealing surface, the box step surface that is sealed and matched with step surface from end;
Pin thread annular projection is tightened in box in ring cavity, and in two boxes, ring cavity is connected by cylindrical hole, and cylindrical hole has identical internal diameter with the end of pin thread annular projection.
According to result of use, preferred technical scheme is: the angle between described step surface and sealing surface is 79 °, angle between sealing surface and horizontal plane is 177 °, between step surface and sealing surface, the radius of corner of round-corner transition is 2.1mm, and the angle between described tapering transition face and horizontal plane is 170 °.
Further technical scheme is: the tolerance value of described radius of corner is-0.3mm ~+0.5mm.
A kind of selectable technical scheme is: all the tolerance value of angle is-1 ° ~+1.5 °.
For ensureing result of use, the technical scheme of prioritizing selection is: all the tolerance value of angle is-0 ° ~+0.03 °.
Further technical scheme is, described external screw thread and box internal thread all adopt buttress thread, to improve the intensity of pin thread and box joint portion and to obtain better pressure-holding anti-leakage effect.
The technical solution of the utility model also comprises: a kind of body, the two ends symmetry of described body be provided with pin thread annular projection, the end face of the end of pin thread annular projection forms the step surface of inclination, the lateral surface of the end of pin thread annular projection is inwardly provided with sealing surface and external screw thread successively from end, described sealing surface is taper surface, forms round-corner transition between step surface and sealing surface; The inner end diameter of pin thread annular projection becomes large and is provided with tapering transition face in internal diameter change place.
The further technical scheme of described body is: described external screw thread is buttress thread, and the angle between described step surface and sealing surface is
degree, the angle between sealing surface and horizontal plane is
degree, between step surface and sealing surface, the radius of corner of round-corner transition is
angle between described tapering transition face and horizontal plane is
degree.
The technical solution of the utility model also comprises: a kind of box cupling, the two ends symmetry of described box cupling be provided with ring cavity in box, in box, ring cavity is inwardly disposed with box internal thread, box sealing surface and box step surface from end; Described box step surface is inclined plane, and box sealing surface is taper surface, forms round-corner transition between box step surface and box sealing surface.
The further technical scheme of described box cupling is: described box internal thread is buttress thread, and the angle between described box step surface and box sealing surface is
degree, the angle between box sealing surface and horizontal plane is
degree, between box step surface and box sealing surface, the radius of corner of round-corner transition is
Compared with prior art, the utility model has following beneficial effect:
1, adopt screw thread and sealing surface two kinds of modes to seal simultaneously, substantially increase sealing effectiveness, pressure-holding anti-leakage better effects if;
2, the utility model structure is simple, easy to operate, conveniently can realize the connection of body;
3, can improve body interface operating mode while meeting sealing, the total wall thickness of interface increases, and avoids occurring that interface ruptures;
4, structure is simple, and cost of manufacture is low, and application is wide;
5, setting table terrace plays the effect of location, end, step surface of the present utility model is inclined plane, if step surface is vertical plane, holding out against forward in process, the end face of body is vertically stressed, easily deform, there will be the problem that body end reduces to inside pipe wall, so not only have impact on sealing, also can be formed fluids within pipes and hinder point, affect the mobility of fluids within pipes, the utility model step surface is set to inclined plane and selects one to be less than the angle of 90 °, change the stressing conditions of body end face, just solve the problems referred to above, sealing and fluids within pipes mobility better,
6, sealing surface is taper surface, the angle of 177 ° is set between sealing surface and horizontal plane, play the effect preventing from revealing that closely cooperates, if above-mentioned angle too small can make conical surface wall thickness reduce easily to cause cross section deformation, if just can reduce close to straight angle sealing effectiveness too greatly, 177 ° of angles can reach sealing effectiveness and mechanical property is best;
7, arrange round-corner transition between step surface and sealing surface, avoid the problem that wedge angle is poorly sealed, time stressed, contact area is large, and sealing area is large, improves the reliability of sealing;
8, the inwall of body pin thread extension is provided with tapering transition face, and the two ends of body, through machine, ensure the end rule of body, ensure that the reliability of sealing.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the utility model embodiment;
Fig. 2 is the partial enlarged drawing of part A in Fig. 1;
In figure: 1 box cupling, 2 bodys, 3 buttress threads, 4 sealing surfaces, 5 step surfaces, 6 tapering transition faces.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the utility model will be further described:
As shown in Figure 1 and Figure 2, ATPM-I type oil pipe and bobbin seal linkage, comprise body 2 and box cupling 1, the two ends symmetry of described body 2 be provided with pin thread annular projection, the two ends symmetry of described box cupling 1 be provided with ring cavity in box.
The end face of the end of pin thread annular projection forms the step surface 5 of inclination, the lateral surface of the end of pin thread annular projection is inwardly provided with sealing surface 4 and external screw thread successively from end, described sealing surface 4 is taper surface, forms round-corner transition between step surface 5 and sealing surface 4; The inner end diameter of pin thread annular projection becomes large and is provided with tapering transition face 6 in internal diameter change place.
In box, ring cavity is inwardly disposed with the box internal thread be meshed with external screw thread, the box sealing surface be sealed and matched with sealing surface 4, the box step surface that is sealed and matched with step surface 5 from end.
Pin thread annular projection is tightened in box in ring cavity, and in two boxes, ring cavity is connected by cylindrical hole, and cylindrical hole has identical internal diameter with the end of pin thread annular projection.
Angle between described step surface and sealing surface is 79 °, and the angle between sealing surface and horizontal plane is 177 °, and between step surface and sealing surface, the radius of corner of round-corner transition is 2.1mm, and the angle between described tapering transition face and horizontal plane is 170 °.
For ensureing sealing effectiveness, the tolerance value of described radius of corner is-0.3mm ~+0.5mm.
For ensureing result of use, the tolerance value of whole angle is-0 ° ~+0.03 °.If above-mentioned tolerance value cannot be reached, also can the tolerance value of whole angle be expanded to-1 ° ~+1.5 °.
In order to improve the intensity of pin thread and box joint portion and obtain better pressure-holding anti-leakage effect, described external screw thread and box internal thread all adopt buttress thread 3.
Setting table terrace 5 plays the effect of location, end, step surface 5 of the present utility model is inclined plane, if step surface 5 is vertical plane, holding out against forward in process the problem that there will be end and reduce to inside pipe wall, step surface 5 is set to inclined plane and selects an angle being less than 90 ° just to solve this problem, through repetition test, when the angle between step surface and sealing surface is 79 °, location and sealing effectiveness best.
Sealing surface 4 is taper surface, the angle of 177 ° is set between sealing surface 4 and horizontal plane, play the effect preventing from revealing that closely cooperates, if above-mentioned angle too small can make conical surface wall thickness reduce easily to cause cross section deformation, if just can reduce close to straight angle sealing effectiveness too greatly, 177 ° of angles can reach sealing effectiveness and mechanical property is best.
Between step surface 5 and sealing surface 4, round-corner transition is set, improves the reliability of sealing.
The inwall of body 2 pin thread extension is provided with tapering transition face 6, and the two ends of body 2, through machine, ensure the end rule of body 2, ensure that the reliability of sealing.
Based on a kind of body 2 of ATPM-I type oil pipe and bobbin seal linkage, the two ends symmetry of described body 2 be provided with pin thread annular projection, the end face of the end of pin thread annular projection forms the step surface 5 of inclination, the lateral surface of the end of pin thread annular projection is inwardly provided with sealing surface 4 and external screw thread successively from end, described sealing surface 4 is taper surface, forms round-corner transition between step surface 5 and sealing surface 4; The inner end diameter of pin thread annular projection becomes large and is provided with tapering transition face in internal diameter change place.
The external screw thread of body 2 is buttress thread 3, and the angle between described step surface 5 and sealing surface 4 is
degree, the angle between sealing surface 4 and horizontal plane is
degree, between step surface 5 and sealing surface 4, the radius of corner of round-corner transition is
angle between described tapering transition face 6 and horizontal plane is
degree.
Based on a kind of box cupling 1 of ATPM-I type oil pipe and bobbin seal linkage, the two ends symmetry of described box cupling 1 be provided with ring cavity in box, in box, ring cavity is inwardly disposed with box internal thread, box sealing surface and box step surface from end; Described box step surface is inclined plane, and box sealing surface is taper surface, forms round-corner transition between box step surface and box sealing surface.
Described box internal thread is buttress thread 3, and the angle between described box step surface and box sealing surface is
degree, the angle between box sealing surface and horizontal plane is
degree, between box step surface and box sealing surface, the radius of corner of round-corner transition is
During use, in the pin thread annular projection on body 2 and the box on box cupling 1, ring cavity makes it closely cooperate by hydraulic screw-on machine, reaches the object of sealing and anti-leakage.
The foregoing is only preferred embodiment of the present utility model; it is not whole embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. oil pipe and bobbin seal linkage, comprise body and box cupling, it is characterized in that,
The two ends symmetry of described body be provided with pin thread annular projection, the two ends symmetry of described box cupling be provided with ring cavity in box;
The end face of the end of pin thread annular projection forms the step surface of inclination, the lateral surface of the end of pin thread annular projection is inwardly provided with sealing surface and external screw thread successively from end, described sealing surface is taper surface, forms round-corner transition between step surface and sealing surface; The inner end diameter of pin thread annular projection becomes large and is provided with tapering transition face in internal diameter change place;
In box, ring cavity is inwardly disposed with the box internal thread be meshed with external screw thread, the box sealing surface be sealed and matched with sealing surface, the box step surface that is sealed and matched with step surface from end;
Pin thread annular projection is tightened in box in ring cavity, and in two boxes, ring cavity is connected by cylindrical hole, and cylindrical hole has identical internal diameter with the end of pin thread annular projection.
2. oil pipe according to claim 1 and bobbin seal linkage, it is characterized in that, angle between described step surface and sealing surface is 79 °, angle between sealing surface and horizontal plane is 177 °, between step surface and sealing surface, the radius of corner of round-corner transition is 2.1mm, and the angle between described tapering transition face and horizontal plane is 170 °.
3. oil pipe according to claim 2 and bobbin seal linkage, is characterized in that, the tolerance value of described radius of corner is-0.3mm ~+0.5mm.
4. oil pipe according to claim 3 and bobbin seal linkage, is characterized in that, the tolerance value of whole angle is-1 ° ~+1.5 °.
5. oil pipe according to claim 3 and bobbin seal linkage, is characterized in that, the tolerance value of whole angle is-0 ° ~+0.03 °.
6. the oil pipe according to any one in Claims 1 to 5 and bobbin seal linkage, is characterized in that, described external screw thread and box internal thread all adopt buttress thread.
7. based on a kind of body of oil pipe according to claim 1 and bobbin seal linkage, it is characterized in that, the two ends symmetry of described body be provided with pin thread annular projection, the end face of the end of pin thread annular projection forms the step surface of inclination, the lateral surface of the end of pin thread annular projection is inwardly provided with sealing surface and external screw thread successively from end, described sealing surface is taper surface, forms round-corner transition between step surface and sealing surface; The inner end diameter of pin thread annular projection becomes large and is provided with tapering transition face in internal diameter change place.
8. a kind of body according to claim 7, is characterized in that, described external screw thread is buttress thread, and the angle between described step surface and sealing surface is
degree, the angle between sealing surface and horizontal plane is
degree, between step surface and sealing surface, the radius of corner of round-corner transition is
mm, the angle between described tapering transition face and horizontal plane is
degree.
9. based on a kind of box cupling of oil pipe according to claim 1 and bobbin seal linkage, it is characterized in that, the two ends symmetry of described box cupling be provided with ring cavity in box, in box, ring cavity is inwardly disposed with box internal thread, box sealing surface and box step surface from end; Described box step surface is inclined plane, and box sealing surface is taper surface, forms round-corner transition between box step surface and box sealing surface.
10. a kind of box cupling according to claim 9, is characterized in that, described box internal thread is buttress thread, and the angle between described box step surface and box sealing surface is
degree, the angle between box sealing surface and horizontal plane is
degree, between box step surface and box sealing surface, the radius of corner of round-corner transition is
mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362628.6U CN204851092U (en) | 2015-05-29 | 2015-05-29 | Oil pipe and sleeve pipe sealing connection device and body and coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362628.6U CN204851092U (en) | 2015-05-29 | 2015-05-29 | Oil pipe and sleeve pipe sealing connection device and body and coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851092U true CN204851092U (en) | 2015-12-09 |
Family
ID=54741650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520362628.6U Expired - Fee Related CN204851092U (en) | 2015-05-29 | 2015-05-29 | Oil pipe and sleeve pipe sealing connection device and body and coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832112A (en) * | 2015-05-29 | 2015-08-12 | 聊城安泰石油机械有限公司 | ATPM-I type oil tube and sleeve sealing connection device, pipe and coupling |
| CN112065297A (en) * | 2020-09-07 | 2020-12-11 | 席赫 | Coiled tubing is used in pit |
-
2015
- 2015-05-29 CN CN201520362628.6U patent/CN204851092U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832112A (en) * | 2015-05-29 | 2015-08-12 | 聊城安泰石油机械有限公司 | ATPM-I type oil tube and sleeve sealing connection device, pipe and coupling |
| CN112065297A (en) * | 2020-09-07 | 2020-12-11 | 席赫 | Coiled tubing is used in pit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 252000, No. three, 6 North Road, Fenghuang Industrial Park, Dongchangfu District, Shandong, Liaocheng, -3 Patentee after: LIAOCHENG ANTAI PETROLEUM MACHINERY CO.,LTD. Address before: 252000, No. three, 6 North Road, Fenghuang Industrial Park, Dongchangfu District, Shandong, Liaocheng, -3 Patentee before: LIAOCHENG ANTAI PETROLEUM MACHINERY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 |