CN217003601U - High-strength electric melting pipe fitting for deep well in oil field - Google Patents
High-strength electric melting pipe fitting for deep well in oil field Download PDFInfo
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- CN217003601U CN217003601U CN202123180649.0U CN202123180649U CN217003601U CN 217003601 U CN217003601 U CN 217003601U CN 202123180649 U CN202123180649 U CN 202123180649U CN 217003601 U CN217003601 U CN 217003601U
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Abstract
The utility model relates to the technical field of electric smelting pipe fittings, and discloses a high-strength electric smelting pipe fitting for an oil field deep well, which comprises a pipe fitting main body, a resistance wire arranged on the inner wall of the pipe fitting main body and an electrode arranged on the outer wall of the pipe fitting main body and connected with the resistance wire, wherein expansion sealing rings are arranged at two ends of the inner wall of the pipe fitting main body, an inflation part which inflates the expansion sealing rings along with the rise of temperature is arranged in the pipe fitting main body, a limiting mechanism which prevents the expansion sealing rings from resetting after the temperature is reduced is arranged in the inflation part, after the resistance wire is heated, the inflation part is driven by high temperature to inflate the expansion sealing rings, the expansion sealing rings tightly hold an oil pipe for sealing after being expanded, when the temperature is reduced, the limiting mechanism can prevent the expansion sealing rings from recovering to the initial state, and the electric smelting pipe fitting can improve the sealing performance between pipes matched with the electric smelting pipe fitting.
Description
Technical Field
The utility model relates to the technical field of electric smelting pipe fittings, in particular to a high-strength electric smelting pipe fitting for an oil field deep well.
Background
The internal ring wall of electric smelting pipe fitting is embedded to have the heater, through electric fusion welding machine circular telegram welding, makes tubular product and pipe fitting fuse together, can be used to the linking of both ends tubular product.
The structure of the existing electric melting pipe fitting is as disclosed in Chinese patent with publication number CN205026276U, the high-strength electric melting pipe fitting with the limiting ring comprises a pipe fitting main body, resistance wires are uniformly distributed on the inner wall of the pipe fitting main body, an electrode is arranged on the outer wall of the pipe fitting main body, the electrode is communicated with the resistance wires, and the resistance wires can be driven to rapidly heat up to the inner wall of the melting pipe fitting main body and the outer wall of the pipe material through electrifying the electric melting welding machine and the motor, so that the resistance wires and the inner wall of the melting pipe fitting main body and the outer wall of the pipe material are fixedly connected.
Because the resistance wire is uncontrollable to pipe fitting main part inner wall melting degree homogeneity, there may be the gap in the junction between electric smelting pipe fitting and the tubular product, when using in the oil field deep well field, the clearance between oil pipe and the electric smelting pipe fitting probably leads to the emergence when crude oil transports and leaks.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a high-strength electric smelting pipe fitting which is used for deep wells in oil fields and can improve the transmission sealing property, aiming at the problem that the existing electric smelting pipe fitting has leakage when gas or liquid is transmitted due to the fact that a gap possibly exists at the connecting part of the electric smelting pipe fitting and a pipe.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a high strength electric smelting pipe fitting for oil field deep well, includes the pipe fitting main part, sets up the resistance wire on pipe fitting main part inner wall and sets up the electrode of being connected with the resistance wire on pipe fitting main part outer wall, is provided with the expansion seal circle at the both ends of pipe fitting main part inner wall, is provided with one in the pipe fitting main part along with the portion of aerifing of inflation sealing washer of rising of temperature, is provided with the stop gear who avoids the expansion seal circle to reset after the cooling in the portion of aerifing.
According to the scheme: insert oil pipe after pipe fitting main part both ends, with electric-melting welded connection motor, near pipe fitting main part inner wall and the outer wall of oil pipe of melting respectively behind the resistance wire heating, order about oil pipe and pipe fitting main part and be connected, simultaneously, the heating of resistance wire orders about the portion of aerifing and aerifys in to the expansion seal circle, hold oil pipe tightly behind the expansion seal circle inflation and seal, when the temperature descends, stop gear can avoid the expansion seal circle to resume to initial condition, so, compare in general sealing washer, the expansion seal circle still can improve the sealing performance between pipe fitting main part and the oil pipe through the inflation, this electric smelting pipe fitting can improve the sealing performance between rather than the complex tubular product.
Furthermore, the portion of aerifing includes and communicates and be located the gas storage chamber between expansion seal circle and the resistance wire and the piston of sealed removal in the gas storage intracavity with the expansion seal circle, and the piston divide into the compression chamber that is close to the expansion seal circle and is close to the expansion chamber of resistance wire with the gas storage chamber, and the one end that the expansion seal circle is close to the compression chamber is protruding to be equipped with the sealed air cock that inserts to the compression chamber.
According to the scheme: when the temperature rises, the expansion cavity expands to drive the piston to move towards the compression cavity, so that air in the compression cavity is pressed into the expansion sealing ring, and the expansion sealing ring realizes inflation and expansion.
Furthermore, annular grooves are sunken in two ends of the pipe fitting main body, heat conduction annular pipes are embedded in the annular grooves, air storage cavities are formed in the heat conduction annular pipes, and air nozzles are inserted into one ends, close to the expansion sealing rings, of the heat conduction annular pipes in a sealing mode.
According to the scheme: the setting of heat conduction ring pipe compares in only setting up the annular, can guarantee the leakproofness of aerifing the in-process more.
Furthermore, the heat conducting ring pipe comprises a first pipe section and a second pipe section which are connected in a sealing mode, the heat conducting performance of the first pipe section is higher than that of the second pipe section, an expansion cavity is formed inside the first pipe section, and a compression cavity is formed inside the second pipe section.
According to the scheme: the heat conduction pipe sections are arranged to be the first pipe section and the second pipe section, and the heat conduction performance of the first pipe section is higher than that of the second pipe section, so that the expansion speed of air in the expansion cavity can be obviously higher than that of air in the second pipe section, the piston can be enabled to move towards the compression cavity, and the expansion sealing ring can be enabled to be in an expansion state after cooling.
Furthermore, a limiting ring for limiting expansion of the expansion sealing ring towards the end part of the pipe fitting main body is fixed on the annular groove.
According to the scheme: the setting of spacing ring with the expansion seal circle spacing between its and heat pipe section, can spacing expansion seal circle's inflation direction, ensure that it finally is to the inflation of oil pipe setting department to improve the leakproofness of complex between pipe fitting main part and the oil pipe.
Furthermore, the limiting mechanism comprises a limiting conical ring which is convexly arranged on the inner wall of the compression cavity and inclines downwards towards the direction of the expansion sealing ring, and the piston is arranged in a frustum shape with the tip end facing the expansion sealing ring.
According to the scheme: the piston is pushed by air pressure and is clamped on the horizontal plane of the limiting conical ring after being extruded by the inclined plane of the limiting conical ring, and the piston can only move in a single direction, so that the phenomenon that the piston moves reversely due to negative pressure driving after cooling can be avoided, and the expansion sealing ring is ensured to be in an expansion state.
Furthermore, at least one limiting conical ring is arranged at an interval towards one end close to the expansion sealing ring.
According to the scheme: spacing taper ring sets up a plurality of multiplicable spacing intensity, can improve spacing precision simultaneously, can decide the inflation volume of expansion seal circle according to operating condition.
Further, the pipe fitting main part includes the plastic layer and places the intraformational metal reinforcing ring in the plastic layer in, and the both ends of metal reinforcing ring extend to the both ends of resistance wire.
According to the scheme: the plastic layer can be arranged in the metal reinforcing ring in, so that the compression resistance of the whole pipe fitting main body can be improved, and the strength of the pipe fitting main body is improved.
Furthermore, the metal reinforcing ring comprises arched reinforcing rings which are arranged along the axial direction of the pipe fitting main body in an outward protruding mode at intervals, and adjacent arched reinforcing rings are connected through horizontal connecting rings.
According to the scheme: the arch-shaped reinforcing ring can significantly improve the compression resistance according to the structure thereof.
Compared with the prior art, the utility model has the following beneficial effects: set up the inflation sealing washer in the pipe fitting main part, give the inflated portion of aerifing of inflation sealing washer and the stop gear that spacing inflation sealing washer cooling reset, insert oil pipe back when pipe fitting main part both ends, with electric fusion welded connection motor, near pipe fitting main part inner wall and the outer wall of oil pipe of melting respectively after the resistance wire heating, order about oil pipe and pipe fitting main part and be connected, and simultaneously, the heating of resistance wire orders about the portion of aerifing and aerifys to the inflation sealing washer in, hold tight oil pipe behind the inflation sealing washer inflation and seal, when the temperature descends, stop gear can avoid the inflation sealing washer to resume to initial state, so, compare in general sealing washer, the inflation sealing washer still can improve the sealing performance between pipe fitting main part and the oil pipe through the inflation, this electric smelting pipe fitting can improve the sealing performance between rather than the complex tubular product.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
fig. 1 is a front view of a high-strength electrofusion pipe fitting for a deep well in an oil field according to the present embodiment;
FIG. 2 is a sectional view taken along line A-A of FIG. 1 in the present embodiment;
fig. 3 is an enlarged view of a of fig. 2.
In the figure: 1. a tube body; 2. an electrode; 3. a resistance wire; 4. a metal reinforcing ring; 401. an arch-shaped reinforcement ring; 402. a horizontal adapter ring; 5. expanding the sealing ring; 501. an air tap; 6. a heat conducting ring pipe; 601. a first tube section; 602. a second tube section; 7. an expansion chamber; 8. a compression chamber; 9. a piston; 10. a limiting conical ring; 11. a limiting ring.
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.
Examples
The utility model provides a high strength electric smelting pipe fitting for oil field deep well, refer to fig. 1-3, including pipe fitting main part 1, set up resistance wire 3 on pipe fitting main part 1 inner wall and set up electrode 2 of being connected with resistance wire 3 on pipe fitting main part 1 outer wall, pipe fitting main part 1 includes the plastic layer and places the intraformational metal reinforcing ring 4 of plastics in, in this embodiment, the plastic layer is the PE layer, the both ends of metal reinforcing ring 4 extend to the both ends of resistance wire 3, metal reinforcing ring 4 is become by iron or steel, metal reinforcing ring 4 includes along the outside protruding arch beaded finish 401 of establishing of 1 axial interval of pipe fitting main part, link up through horizontal linking ring 402 between the adjacent arch beaded finish 401, arch beaded finish 401 not only can show the compressive property who increases pipe fitting main part 1, and can combine more firmly with the plastic layer.
The pipe fitting comprises a pipe fitting body 1, expansion sealing rings 5 are arranged at two ends of the inner wall of the pipe fitting body 1, the expansion sealing rings 5 are made of high-temperature-resistant rubber, an inflation part which inflates the expansion sealing rings 5 along with the rise of temperature is arranged in the pipe fitting body 1, the inflation part comprises an air storage cavity which is communicated with the expansion sealing rings 5 and is positioned between the expansion sealing rings 5 and a resistance wire 3 and a piston 9 which is in sealing movement in the air storage cavity, annular grooves are sunken at two ends of the pipe fitting body 1, heat conduction annular pipes 6 are embedded in the annular grooves, the air storage cavity is formed in the heat conduction annular pipes 6, the heat conduction annular pipes 6 comprise a first pipe section 601 and a second pipe section 602 which are in sealing connection, the heat conduction performance of the first pipe section 601 is higher than that of the second pipe section 602, in the embodiment, the first pipe section 601 is a metal pipe section and adopts an iron pipe section or a copper pipe section, the second pipe section 602 is made of high-temperature-resistant plastic, the first pipe section 601 and the second pipe section 602 are in sealing butt-joint matching or are fixedly connected and matched through glue, inside inflation chamber 7 that forms of first pipeline section 601, the inside compression chamber 8 that forms of second pipeline section 602, inflation chamber 7 and compression chamber 8 constitute the gas storage chamber jointly, expansion seal ring 5 is provided with an air cock 501 near the one end in compression chamber 8, this air cock 501 is sealed to be inserted to compression chamber 8 in, be fixed with spacing expansion seal ring 5 on the annular to the expanded spacing ring 11 of 1 tip of pipe fitting main part, 11 tip melts back and the annular adhesion of spacing ring or fix through glue and annular adhesion.
Be provided with the stop gear who avoids expansion seal ring 5 to reset after the cooling in the portion of aerifing, stop gear includes in the protruding spacing taper ring 10 of establishing to 5 orientation downward slopping of expansion seal ring of compressing 8 inner walls of chamber, piston 9 sets up and is most advanced frustum form towards expansion seal ring 5, spacing taper ring 10 is provided with at least one to the one end interval that is close to expansion seal ring 5, set up a plurality of backs, can carry on spacingly according to actual conditions to piston 9, after the cooling, can avoid expansion seal ring 5 to reset.
The principle of the scheme is that after the two ends of the pipe fitting main body 1 are inserted into the oil pipes, the electric motor is connected by electric fusion welding, the resistance wires 3 are heated and then respectively melt the inner wall of the pipe fitting main body 1 and the outer wall of the oil pipe nearby, the oil pipe is driven to be connected with the pipe fitting main body 1, meanwhile, the heating of the resistance wire 3 drives the first pipe section 601 which conducts heat rapidly to heat up rapidly, the heating rate is obviously faster than that of the first pipe section 601, thereby leading the air in the expansion cavity 7 to expand and driving the piston 9 to move towards the direction of the expansion sealing ring 5, the piston 9 presses the air in the compression cavity 8 into the expansion sealing ring 5, the expansion sealing ring 5 is expanded and clasped on the outer wall of the oil pipe, because the setting of spacing cone ring 10 can avoid piston 9 reverse movement, when the temperature descends, can ensure that expansion seal ring 5 still is in the expanded state, so, the sealing performance of the electric smelting pipe fitting of this scheme is more superior.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides an oil field deep well is with high strength electric smelting pipe fitting, includes pipe fitting main part (1), sets up resistance wire (3) on pipe fitting main part (1) inner wall and sets up electrode (2) of being connected with resistance wire (3) on pipe fitting main part (1) outer wall, its characterized in that: expansion sealing rings (5) are arranged at two ends of the inner wall of the pipe fitting main body (1), an inflation part which inflates the expansion sealing rings (5) along with the rise of temperature is arranged in the pipe fitting main body (1), and a limiting mechanism which prevents the expansion sealing rings (5) from resetting after cooling is arranged in the inflation part.
2. The high-strength electric smelting pipe fitting for the deep well of the oil field according to claim 1, characterized in that: the inflation portion includes and communicates with inflation sealing washer (5) and is located the gas storage chamber between inflation sealing washer (5) and resistance wire (3) and sealed piston (9) that removes in the gas storage chamber, and piston (9) divide into the gas storage chamber and are close to compression chamber (8) of inflation sealing washer (5) and expansion chamber (7) of resistance wire (3), and inflation sealing washer (5) are close to protruding air cock (501) that are equipped with sealed inserting to compression chamber (8) of being equipped with of one end of compression chamber (8).
3. The high-strength electric smelting pipe fitting for the deep well of the oil field according to claim 2, characterized in that: sunken at pipe fitting main part (1) both ends have the annular, and the annular is embedded to be equipped with heat conduction ring canal (6), and heat conduction ring canal (6) inside forms the gas storage chamber, and air cock (501) seal insert to heat conduction ring canal (6) one end that is close to expansion seal circle (5).
4. The high-strength electric smelting pipe fitting for the deep well of the oil field according to claim 3, characterized in that: the heat-conducting ring pipe (6) comprises a first pipe section (601) and a second pipe section (602) which are connected in a sealing mode, the heat-conducting performance of the first pipe section (601) is higher than that of the second pipe section (602), an expansion cavity (7) is formed inside the first pipe section (601), and a compression cavity (8) is formed inside the second pipe section (602).
5. The high-strength electric smelting pipe fitting for the deep well of the oil field according to claim 4, characterized in that: and a limiting ring (11) for limiting the expansion of the expansion sealing ring (5) towards the end part of the pipe fitting main body (1) is fixed on the annular groove.
6. The high-strength electric smelting pipe fitting for the deep well of the oil field according to claim 2, characterized in that: the limiting mechanism comprises a limiting conical ring (10) which is convexly arranged on the inner wall of the compression cavity (8) and inclines downwards towards the direction of the expansion sealing ring (5), and the piston (9) is arranged in a frustum shape with the tip facing the expansion sealing ring (5).
7. The high-strength electric smelting pipe fitting for the deep well of the oil field according to claim 6, wherein: at least one limiting conical ring (10) is arranged at intervals towards one end close to the expansion sealing ring (5).
8. The high-strength electric smelting pipe fitting for the deep well of the oil field according to claim 1, wherein: the pipe fitting main body (1) comprises a plastic layer and a metal reinforcing ring (4) arranged in the plastic layer, and two ends of the metal reinforcing ring (4) extend to two ends of the resistance wire (3).
9. The high-strength electric smelting pipe fitting for the deep well of the oil field according to claim 8, wherein: the metal reinforcing ring (4) comprises arched reinforcing rings (401) which are arranged along the axial direction of the pipe fitting main body (1) in an outward protruding mode at intervals, and the adjacent arched reinforcing rings (401) are connected through horizontal connecting rings (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123180649.0U CN217003601U (en) | 2021-12-17 | 2021-12-17 | High-strength electric melting pipe fitting for deep well in oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123180649.0U CN217003601U (en) | 2021-12-17 | 2021-12-17 | High-strength electric melting pipe fitting for deep well in oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217003601U true CN217003601U (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123180649.0U Active CN217003601U (en) | 2021-12-17 | 2021-12-17 | High-strength electric melting pipe fitting for deep well in oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217003601U (en) |
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2021
- 2021-12-17 CN CN202123180649.0U patent/CN217003601U/en active Active
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