CN220869337U - Underground anti-tripping device for sucker rod of screw pump - Google Patents
Underground anti-tripping device for sucker rod of screw pump Download PDFInfo
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- CN220869337U CN220869337U CN202322603535.5U CN202322603535U CN220869337U CN 220869337 U CN220869337 U CN 220869337U CN 202322603535 U CN202322603535 U CN 202322603535U CN 220869337 U CN220869337 U CN 220869337U
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- sucker rod
- screw pump
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- 230000005540 biological transmission Effects 0.000 claims abstract description 54
- 238000006243 chemical reaction Methods 0.000 claims abstract description 35
- 230000008878 coupling Effects 0.000 claims abstract description 15
- 238000010168 coupling process Methods 0.000 claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 8
- 239000003921 oil Substances 0.000 abstract description 7
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract description 3
- 239000010779 crude oil Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model provides an underground anti-tripping device for a sucker rod of a screw pump, and belongs to the technical field of oil extraction underground tools. The upper part of the variable buckle joint is in threaded connection with the lower part of a transmission shaft, the upper part of the transmission shaft is in threaded connection with the lower part of a conversion gear, a transmission sleeve is arranged outside the transmission shaft, the transmission sleeve is in threaded connection with the lower part of a middle sleeve, the upper part of the middle sleeve is in threaded connection with the lower part of an unloading shaft, and the upper part of the unloading shaft is in threaded connection with the lower part of a sucker rod coupling. The utility model is arranged at the upper part of the screw pump, the unloading shaft drives the middle sleeve to rotate through threads during production, the middle sleeve drives the transmission sleeve, and the transmission sleeve drives the transmission shaft and the buckling connector to drive the rotor to rotate for pumping oil through the conversion gear. When the well is stopped due to abnormal reasons, the rotor rotates to drive the conversion gear, torque is unloaded by the bevel edge at the back of the zigzag gear, the sucker rod is pushed by the upper teeth of the conversion gear, so that the transmission sleeve moves upwards, the purpose of preventing the sucker rod from reversing and tripping is achieved, the pump detection period of the screw pump is prolonged, and the crude oil yield is increased.
Description
Technical Field
The utility model relates to the technical field of oil extraction engineering, in particular to an underground anti-tripping device for a sucker rod of a screw pump.
Background
The screw pump oil extraction technology has been developed for over 20 years since the application of the 90 th century, and has the characteristics of low noise, convenient management and maintenance and small occupied space. The screw pump driving principle is as follows: the motor transmits power to the polish rod, and the rotary motion and the power are transmitted to the underground rotor through the middle sucker rod so as to rotate the underground rotor. During driving, the working load is directly expressed as torque. In the long-term production process of the screw pump, the torque of the rod column is overlarge, so that the problem that the sucker rod is tripped and laid down due to the reverse release torque when the well is stopped and the power is cut off exists. The conventional ground-driven anti-tripping device of the screw pump can only slow down the reversing of the sucker rod string, and can not effectively prevent the reversing and tripping of the sucker rod.
The screw pump well of the island oil extraction factory of the victory oil field is on average subjected to annual operation maintenance cost of 130 ten thousand yuan or more due to the fact that the sucker rod is tripped and laid down at 13 mouths of the well, and the maintenance cost is high.
Disclosure of utility model
The utility model aims to provide an underground anti-tripping device for a sucker rod of a screw pump, which solves the problem of tripping the sucker rod caused by well stopping and power failure of a screw pump well and achieves the purposes of reducing the well laying rate, reducing the operation cost and reducing the labor intensity of workers.
The comparison with the prior patent technology is as follows:
The utility model provides a screw pump sucker rod anticreep ware, application number CN201720160176.2, its shell is the pipe shape, and one end is equipped with the shell end cover, and the other end is equipped with screw pump connecting screw thread, is equipped with the moment of torsion release axle chamber in the shell, is equipped with moment of torsion release axle involute groove in the moment of torsion release axle chamber; a sealing groove is arranged between the cylinder shell and the torsion shaft, a sealing ring is arranged between the cylinder shell and the torsion shaft, and a tapered roller bearing is arranged between the cylinder shell and the torsion shaft; the other end of the torque release shaft is connected with a rotating shaft, the rotating shaft is arranged in a cylinder shell through a one-way thrust ball bearing, the rotating shaft is arranged in a space in the cylinder shell through a nut, a torque adjusting ring is arranged on a shoulder between the torque release shaft and the rotating shaft, the torque release involute grooves are of concentric different diameter structures, and a spring limiting hole is arranged on a part of the plane of the torque release shaft and is provided with a torque release spring. The utility model releases the energy of the sucker rod flexibly and reliably, and is convenient to adjust and install. However, the utility model only has one flat key sliding involute slot, one flat key and one torque release spring, and the bending moment is easy to generate when power is transmitted, so that the sucker rod is easy to be damaged.
The utility model provides a screw pump well sucker rod anticreep ware, application number CN 200420031791.6, the application of helical tooth has been followed to the anticreep ware of this patent disclosure, has aggravated helical tooth's wearing and tearing owing to the existence of axial spring in the structure, and life-span is shorter.
The utility model provides a screw pump sucker rod anticreep ware, application number CN200720011842.2, the name is, and the technical scheme that this patent discloses is according to a sucker rod anticreep ware, and application number CN2004200846801 improves, and the poor problem of torsional strength has been solved to the structure of this patent, and the tail shaft part is reversing in the reversal process and is easily detained.
The utility model aims to provide an underground anti-tripping device for a sucker rod of a screw pump aiming at the defects.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model relates to a screw pump sucker rod underground anti-tripping device, which comprises: the device comprises a variable buckle joint, a transmission shaft, a transmission sleeve, a sealing ring, a middle sleeve, a conversion gear, an unloading shaft and a sucker rod coupling; the method is characterized in that: the upper part of the variable buckle joint is in threaded connection with the lower part of the transmission shaft, the upper part of the transmission shaft is in threaded connection with the lower part of the conversion gear, a transmission sleeve is arranged outside the transmission shaft and in threaded connection with the lower part of the middle sleeve, the upper part of the middle sleeve is in threaded connection with the lower part of the unloading shaft, and the upper part of the unloading shaft is in threaded connection with the lower part of the sucker rod coupling.
Further, the variable buckle joint is a cylinder with a first-stage step in the middle of the outer circle, the lower part is provided with external threads, and the center of the upper part is provided with an internal thread blind hole connected with the transmission shaft.
Further, the transmission shaft is a cylinder, the lower end is provided with external threads connected with the variable buckle joint, and the upper end is provided with external threads connected with the conversion gear.
Furthermore, the transmission sleeve is cylindrical, the upper part is provided with zigzag driven teeth, and the lower part of the central hole is provided with a sealing ring groove.
Furthermore, the sealing ring groove is provided with two to four channels, and a sealing ring is arranged in the sealing ring groove.
Furthermore, the middle sleeve is cylindrical, the upper end and the lower end of the central through hole are provided with internal threads,
Further, the conversion gear is provided with a central hole, an internal thread is arranged in the central hole, the upper end of the conversion gear is provided with zigzag upper teeth, and the lower end of the conversion gear is provided with zigzag lower teeth.
Further, the unloading shaft is a cylinder with a first-stage ladder step, the upper end of the unloading shaft is provided with external threads connected with the sucker rod coupling, and the lower end of the unloading shaft is provided with zigzag power teeth.
Further, the driven teeth of the transmission sleeve are meshed with the lower teeth of the conversion gear, the power teeth of the unloading shaft are meshed with the upper teeth of the conversion gear, the sucker rod rotates clockwise to transmit power, the teeth are meshed to be invalid when the sucker rod rotates anticlockwise, and the unloading shaft, the middle sleeve and the transmission sleeve rotate along with the sucker rod to prevent the sucker rod from tripping.
Furthermore, the sucker rod coupling is cylindrical, and the upper part and the lower part of the central hole are provided with internal threads.
In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "left," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
The beneficial effects of the utility model are as follows:
The utility model is arranged at the upper part of the screw pump, the unloading shaft drives the middle sleeve to rotate through threads during production, the middle sleeve drives the transmission sleeve, and the transmission sleeve drives the transmission shaft and the buckling connector to drive the rotor to rotate for pumping oil through the conversion gear. When the well is stopped due to abnormal reasons, the rotor rotates to drive the conversion gear, torque is unloaded by the bevel edge at the back of the zigzag gear, the sucker rod is pushed by the upper teeth of the conversion gear, so that the transmission sleeve moves upwards, the purpose of preventing the sucker rod from reversing and tripping is achieved, the pump detection period of the screw pump is prolonged, and the crude oil yield is increased.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and the same reference numerals are used throughout the drawings to represent the same parts, which are only for the purpose of illustrating preferred embodiments and are not to be construed as limiting the utility model, it will be apparent that the drawings in the following description are only some embodiments of the present utility model, and various other advantages and benefits will become apparent to those of ordinary skill in the art from the detailed description of the preferred embodiments without the inventive effort.
FIG. 1 is a schematic view of the present utility model in front view and semi-section;
FIG. 2 is a schematic view of the unloading shaft of the present utility model in front view in semi-section;
FIG. 3 is a schematic diagram of a front view and semi-section of a transfer gear of the present utility model;
FIG. 4 is a schematic diagram of a transmission sleeve of the present utility model in front view and semi-section;
FIG. 5 is a schematic diagram of the front view of the drive shaft of the present utility model;
In the accompanying drawings: 1. the variable buckle joint, 2. The transmission shaft, 3. The transmission sleeve, 3-1. The driven tooth, 3-2. The seal groove; 4. sealing ring, intermediate sleeve, conversion gear, upper tooth, lower tooth, unloading shaft, power tooth and sucker rod coupling.
Detailed Description
The technical scheme in the embodiment of the utility model is clearly and thoroughly described below by combining the drawings in the embodiment of the utility model, and the described embodiment is only a part of embodiments, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
Embodiments of the present utility model are described in detail below with reference to the attached drawing figures:
Example 1
As shown in fig. 1, a downhole trip-preventing device for a sucker rod of a screw pump comprises: the variable buckle joint 1, the transmission shaft 2, the transmission sleeve 3, the sealing ring 4, the middle sleeve 5, the conversion gear 6, the unloading shaft 7 and the sucker rod coupling 8; the method is characterized in that: the upper part of the variable buckle joint 1 is in threaded connection with the lower part of the transmission shaft 2, the upper part of the transmission shaft 2 is in threaded connection with the lower part of the conversion gear 6, a transmission sleeve 3 is arranged outside the transmission shaft 2, the transmission sleeve 3 is in threaded connection with the lower part of the middle sleeve 5, the upper part of the middle sleeve 5 is in threaded connection with the lower part of the unloading shaft 7, and the upper part of the unloading shaft 7 is in threaded connection with the lower part of the sucker rod coupling 8.
Specifically, the variable buckle joint 1 is a cylinder with a first-stage step in the middle of an outer circle, an external thread is arranged at the lower part, and an internal thread blind hole connected with the transmission shaft 2 is arranged at the center of the upper part.
As shown in fig. 2, specifically, the transmission shaft 2 is a cylinder, the lower end is provided with external threads connected with the buckle connector 1, and the upper end is provided with external threads connected with the conversion gear 6.
As shown in fig. 3, specifically, the transmission sleeve 3 is cylindrical, the upper part is provided with zigzag passive teeth 3-1, and the lower part of the central hole is provided with a sealing ring groove 3-2.
Specifically, the number of the sealing ring grooves 3-2 is 2, and the sealing ring 4 is arranged in the sealing ring groove 3-2.
Specifically, the middle sleeve 5 is cylindrical, the upper end and the lower end of the central through hole are provided with internal threads,
As shown in fig. 4, specifically, the conversion gear 6 is provided with a central hole, an internal thread is arranged in the central hole, a saw-tooth upper tooth 6-1 is arranged at the upper end, and a saw-tooth lower tooth 6-2 is arranged at the lower end.
As shown in fig. 5, specifically, the unloading shaft 7 is a cylinder with a first-stage step, the upper end is provided with an external thread connected with the sucker rod coupling 8, and the lower end is provided with a saw-tooth-shaped power tooth 7-1.
Specifically, the driven teeth 3-1 of the driving sleeve 3 are meshed with the lower teeth 6-2 of the conversion gear 6, the power teeth 7-1 of the unloading shaft 7 are meshed with the upper teeth 6-1 of the conversion gear 6, the sucker rod rotates clockwise to transmit power, the teeth are meshed to be invalid when the sucker rod rotates anticlockwise, and the unloading shaft 7, the middle sleeve 5 and the driving sleeve 3 rotate along with the sucker rod to prevent the sucker rod from tripping.
Specifically, the sucker rod coupling 8 is cylindrical, and the upper part and the lower part of the central hole are respectively provided with internal threads.
Example two
The sealing ring groove 3-2 of the underground anti-tripping device of the sucker rod of the screw pump is set to be 3 channels, and a sealing ring 4 is arranged in the sealing ring groove 3-2.
Working principle: when the underground anti-tripping device for the sucker rod of the screw pump is used, the underground anti-tripping device is arranged on the upper part of the screw pump, the sucker rod coupling 8 is connected with the sucker rod, the polish rod on the upper part of the sucker rod is in power connection with the ground, the unloading shaft 7 drives the middle sleeve 5 to rotate through threads during production, the middle sleeve 5 drives the transmission sleeve 3, the transmission sleeve 3 drives the transmission shaft 2 through the conversion gear 6, and the conversion gear 6 drives the rotor to rotate for pumping. When the well is stopped due to abnormal reasons, the rotor rotates to drive the conversion gear 6, torque is unloaded by utilizing the bevel edge at the back of the zigzag gear, the sucker rod is pushed by the upper tooth 6-1 of the conversion gear 6, and the transmission sleeve 3 ascends, so that the purpose of preventing the sucker rod from reversing and tripping is achieved; when the sucker rod is reversely buckled, the power teeth 7-1 of the unloading shaft 7 are inserted into tooth grooves of the conversion gear 6, so that the sucker rod is prevented from rotating, and the sucker rod can be reversely buckled.
While preferred embodiments of the present utility model have been described above, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the true scope of the utility model.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, if such modifications and variations of the present utility model fall within the scope of the claims and their equivalents, the present utility model is intended to include such modifications and variations.
Claims (10)
1. A screw pump sucker rod downhole trip prevention device, comprising: the variable buckle joint (1), a transmission shaft (2), a transmission sleeve (3), a sealing ring (4), an intermediate sleeve (5), a conversion gear (6), an unloading shaft (7) and a sucker rod coupling (8); the method is characterized in that: the upper portion of the variable buckle joint (1) is in threaded connection with the lower portion of the transmission shaft (2), the upper portion of the transmission shaft (2) is in threaded connection with the lower portion of the conversion gear (6), a transmission sleeve (3) is arranged outside the transmission shaft (2), the transmission sleeve (3) is in threaded connection with the lower portion of the middle sleeve (5), the upper portion of the middle sleeve (5) is in threaded connection with the lower portion of the unloading shaft (7), and the upper portion of the unloading shaft (7) is in threaded connection with the lower portion of the sucker rod coupling (8).
2. The downhole trip prevention device for a sucker rod of a screw pump according to claim 1, wherein: the variable buckle joint (1) is a cylinder with a first-stage step in the middle of an outer circle, an external thread is arranged at the lower part, and an internal thread blind hole connected with the transmission shaft (2) is arranged at the center of the upper part.
3. The downhole trip prevention device for a sucker rod of a screw pump according to claim 1, wherein: the transmission shaft (2) is a cylinder, the lower end is provided with external threads connected with the variable buckle joint (1), and the upper end is provided with external threads connected with the conversion gear (6).
4. The downhole trip prevention device for a sucker rod of a screw pump according to claim 1, wherein: the transmission sleeve (3) is cylindrical, the upper part of the transmission sleeve is provided with zigzag driven teeth (3-1), and the lower part of the central hole is provided with a sealing ring groove (3-2).
5. The downhole trip unit of a sucker rod pump of claim 4, wherein: the number of the sealing ring grooves (3-2) is 2-4, and sealing rings (4) are arranged in the sealing ring grooves (3-2).
6. The downhole trip prevention device for a sucker rod of a screw pump according to claim 1, wherein: the middle sleeve (5) is cylindrical, and the upper end and the lower end of the central through hole are provided with internal threads.
7. The downhole trip prevention device for a sucker rod of a screw pump according to claim 1, wherein: the conversion gear (6) is provided with a central hole, an internal thread is arranged in the central hole, the upper end of the conversion gear is provided with a zigzag upper tooth (6-1), and the lower end of the conversion gear is provided with a zigzag lower tooth (6-2).
8. The downhole trip prevention device for a sucker rod of a screw pump according to claim 1, wherein: the unloading shaft (7) is a cylinder with one-stage ladder steps, the upper end of the unloading shaft is provided with external threads connected with the sucker rod coupling (8), and the lower end of the unloading shaft is provided with zigzag power teeth (7-1).
9. A downhole trip unit for a sucker rod of a screw pump according to claim 4 or 8, wherein: the driven teeth (3-1) of the transmission sleeve (3) are meshed with the lower teeth (6-2) of the conversion gear (6), the power teeth (7-1) of the unloading shaft (7) are meshed with the upper teeth (6-1) of the conversion gear (6), the sucker rod rotates clockwise to transmit power, the teeth are meshed to lose effectiveness when the sucker rod rotates anticlockwise, and the unloading shaft (7), the middle sleeve (5) and the transmission sleeve (3) rotate along with the sucker rod to prevent the sucker rod from tripping.
10. The downhole trip prevention device for a sucker rod of a screw pump according to claim 1, wherein: the sucker rod coupling (8) is cylindrical, and the upper part and the lower part of the central hole are provided with internal threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322603535.5U CN220869337U (en) | 2023-09-25 | 2023-09-25 | Underground anti-tripping device for sucker rod of screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322603535.5U CN220869337U (en) | 2023-09-25 | 2023-09-25 | Underground anti-tripping device for sucker rod of screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220869337U true CN220869337U (en) | 2024-04-30 |
Family
ID=90820893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322603535.5U Active CN220869337U (en) | 2023-09-25 | 2023-09-25 | Underground anti-tripping device for sucker rod of screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220869337U (en) |
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2023
- 2023-09-25 CN CN202322603535.5U patent/CN220869337U/en active Active
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