Downhole operation reaction torque release screw pump

Abstract

The invention discloses a downhole operation reaction torque release screw pump, and relates to the technical field of screw pumps. Comprising a pump body and a positioning frame, the pump body is fixedly installed on the positioning frame, and a pump shaft is fixedly installed at the output end of the pump body; a first installation ring and a second installation ring are fixedly installed on the side end face of the pump shaft, the first installation ring is located above the second installation ring, a stable frame ring is fixedly installed on the positioning frame, and an auxiliary assembly is arranged on the stable frame ring. A reaction torque assembly is arranged on the lower end face of the stabilizing frame ring, the auxiliary assembly comprises a positioning ring installed in the stabilizing frame ring, a plurality of sliding grooves are formed in the positioning ring, and sliding blocks are installed in the sliding grooves in a sliding mode. According to the screw pump, through cooperative use of the auxiliary assembly and the reaction torque assembly, adverse effects caused by vibration and reaction torque of the pump shaft can be effectively reduced, the stability and the operation efficiency of the pump shaft are improved, and the effect and the efficiency of the screw pump during underground operation are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of screw pumps, in particular to a screw pump for underground operation with anti-torque release. Background Art

[0002] Screw pump is a kind of mechanical equipment commonly used for fluid transportation. Its main working principle is to transport the fluid from the pump inlet to the outlet through one or more spiral rotors rotating in the pump housing. It is widely used in the petroleum, chemical, food, pharmaceutical and other industries, especially for the fluids with high viscosity or certain particles.

[0003] In the prior art, a Chinese patent with publication number "CN114542034B" discloses a high-pressure injection screw pump for oil field water injection. When a blockage occurs, the second valve and the third valve are closed and the negative pressure pump is turned on. The negative pressure pump generates negative pressure, and the negative pressure pump sucks the blockage inside the screw pump body and the ventilation pipe into the inside of the feeding pipe, and then discharges the debris through the discharge pipe. When in use, the first valve is closed, and the second valve and the third valve are opened, so that the whole can be used smoothly. After the booster pump generates a large pressure, the pressure inside the intake pipe is reduced by the pressure relief device, and then the pressure of the injected water is controlled as a whole, which is conducive to unblocking the pipeline and controlling the boost pressure. The problem that the existing screw pump will cause partial damage to the underground structure and affect the mining effect when the pressure applied to the water is large during use is solved.

[0004] During underground operations, the screw pump may be subjected to strong vibration and impact due to environmental factors (such as uneven underground formations, unstable wellhead structure, etc.), which will cause vibration, wear, and even damage to the pump shaft and pump body. In addition, during the operation of the screw pump, especially when sudden shutdown, reversal or system failure occurs, reverse torque may occur. Underground operations are often accompanied by complex changes in working conditions. Reverse torque may cause serious damage to the pump shaft and transmission system. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a downhole operation anti-torque release screw pump, which solves the problems mentioned in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A downhole operation anti-torque release screw pump, comprising a pump body and a positioning frame, wherein the pump body is fixedly mounted on the positioning frame, and a pump shaft is fixedly mounted on the output end of the pump body; A first mounting ring and a second mounting ring are fixedly mounted on the side end surface of the pump shaft, the first mounting ring is located above the second mounting ring, a stabilizing frame ring is fixedly mounted on the positioning frame, and an auxiliary component is arranged on the stabilizing frame ring; The lower end surface of the stabilizing frame ring is provided with an anti-torque component.

[0007] Preferably, the auxiliary component includes a positioning ring installed inside the stabilizing frame ring, the positioning ring is provided with a plurality of sliding grooves, a sliding block is slidably installed inside the sliding groove, a mounting column is fixedly installed on the sliding block, a ball is movably installed on the mounting column, a plurality of contact blocks are fixedly installed on the first mounting ring, and a buffer spring is fixedly connected to the side end face of the sliding block.

[0008] Preferably, one end of the mounting column away from the sliding block extends to the inside of the positioning ring, and the ball is in sliding contact with the surface of the contact block.

[0009] Preferably, a driving ring is rotatably installed inside the stabilizing frame ring and on the outside of the positioning ring, an adjusting block is fixedly installed inside the driving ring, a high adjusting surface and a low adjusting surface are provided on the side end surface of the adjusting block, a sliding plate is provided inside the sliding groove and on the outside of the sliding block, and an adjusting rod is fixedly installed on the sliding plate.

[0010] Preferably, one end of the buffer spring away from the sliding block is fixedly connected to the sliding plate, one end of the adjustment rod away from the sliding plate extends to the outside of the positioning ring, and the high adjustment surface and the low adjustment surface are in sliding contact.

[0011] Preferably, a rotating handle is fixedly mounted on the driving ring, a plurality of positioning holes are opened on the side end surface of the driving ring, a positioning rod is slidably mounted on the side end surface of the stabilizing frame ring, a fixing ring is fixedly mounted on the positioning rod, an auxiliary spring is fixedly connected to the fixing ring, and a pulling plate is fixedly mounted on one end of the positioning rod.

[0012] Preferably, the other end of the positioning rod extends to the inner side of the stabilizing frame ring and is embedded in the positioning hole, the end of the auxiliary spring away from the fixing ring is fixedly connected to the inner side of the stabilizing frame ring, and the pulling plate is fitted with the outer side of the stabilizing frame ring.

[0013] Preferably, the anti-torque assembly is fixedly mounted on an L-shaped rod on the lower end surface of the stabilizing frame ring, a limiting ring is fixedly mounted on the L-shaped rod, an arc groove is provided inside the limiting ring, a mounting block is fixedly mounted on the side end surface of the second mounting ring, a mounting groove is provided inside the mounting block, a telescopic block is slidably mounted inside the mounting groove, and a limiting spring is fixedly connected to the telescopic block.

[0014] Preferably, a telescopic plate is fixedly installed on the side end surface of the telescopic block, a buffer rod is slidably installed on the side end surface of the telescopic plate, a limiting plate is fixedly installed on one end of the buffer rod, a buffer plate is fixedly installed on the other end of the buffer rod, and a telescopic spring is fixedly installed on the buffer plate.

[0015] Preferably, one end of the limit spring away from the telescopic block is fixedly connected to the inside of the mounting groove, one end of the telescopic spring away from the buffer plate is fixedly connected to the telescopic plate, and the telescopic spring is located outside the buffer rod.

[0016] The present invention provides a downhole operation anti-torque release screw pump. Compared with the prior art, it has the following beneficial effects: 1. In the present invention, when the pump shaft rotates, the contact block on the first mounting ring contacts the ball in sequence, and the mounting column transmits the vibration force acting on the pump shaft to the buffer spring by the cooperation between the contact block and the ball. The multiple buffer springs are used to reduce the influence of the vibration force on the pump shaft, which helps to improve the stability and operation efficiency of the pump shaft, reduce the damage caused by vibration, and effectively reduce the influence of the counter torque on the pump shaft; 2. The present invention pulls out the positioning rod inserted in the positioning hole by pulling the plate, completes the rotation of the driving ring by turning the handle, and utilizes the rotation of the adjusting block on the driving ring to adjust the contact between the adjusting rod and the high adjusting surface and the low adjusting surface on the adjusting block. The elastic force of the buffer spring can be adjusted by the cooperation of the adjusting rod with the high adjusting surface and the low adjusting surface. By adjusting the elastic force of the buffer spring, the cooperation between the ball and the buffer spring is ensured, and the influence of vibration and counter torque on the pump shaft can be minimized. 3. In the present invention, when the pump shaft rotates in the opposite direction, the second mounting ring on the pump shaft drives the mounting block to rotate in the opposite direction, and the mounting block drives the telescopic plate to slide in the arc groove. Through the limiting extrusion of the buffer plate by the arc groove, the torque force generated by the pump shaft can effectively absorb and disperse the reverse torque through the cooperation of the buffer plate, the telescopic spring and the limiting rod, thereby reducing the impact on the pump shaft; 4. The present invention, through the coordinated use of auxiliary components and anti-torque components, can effectively reduce the adverse effects of pump shaft vibration and anti-torque, improve the stability and operating efficiency of the pump shaft, and ensure the effect and efficiency of the screw pump during underground operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 is a cross-sectional view of the stabilizing frame ring of the present invention; Figure 4 It is a schematic diagram of the structure of the driving ring in the present invention; Figure 5 It is a schematic diagram of the internal structure of the positioning ring in the present invention; Figure 6 is a schematic diagram of the structure of the anti-torque component in the present invention; Figure 7 It is a structural schematic diagram of the second mounting ring in the present invention; Figure 8 is a cross-sectional view of the limiting ring in the present invention; Fig. 9 It is a cross-sectional view of the mounting block in the present invention.

[0018] In the figure: 1. pump body; 2. positioning frame; 3. pump shaft; 4. first mounting ring; 5. second mounting ring; 6. stabilizing frame ring; 7. positioning ring; 8. sliding groove; 9. sliding block; 10. mounting column; 11. ball; 12. contact block; 13. buffer spring; 14. driving ring; 15. adjusting block; 16. high adjustment surface; 17. low adjustment surface; 18. sliding plate; 19. adjusting rod; 20. turning handle; 21. positioning hole; 22. positioning rod; 23. fixing ring; 24. auxiliary spring; 25. pulling plate; 26. L-shaped rod; 27. limiting ring; 28. arc groove; 29. ​​mounting block; 30. mounting groove; 31. telescopic block; 32. limiting spring; 33. telescopic plate; 34. buffer rod; 35. limiting plate; 36. buffer plate; 37. telescopic spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-9 The present invention is a downhole operation anti-torque release screw pump, comprising a pump body 1 and a positioning frame 2, the pump body 1 is fixedly mounted on the positioning frame 2, a pump shaft 3 is fixedly mounted on the output end of the pump body 1, a first mounting ring 4 and a second mounting ring 5 are fixedly mounted on the side end surface of the pump shaft 3, the first mounting ring 4 is located above the second mounting ring 5, a stabilizing frame ring 6 is fixedly mounted on the positioning frame 2, an auxiliary component is arranged on the stabilizing frame ring 6, wherein the pump shaft 3 can be connected to the screw shaft, and since the screw shaft is a technology well known to those skilled in the art, no detailed description is given here; The auxiliary component includes a positioning ring 7 installed inside the stabilizing frame ring 6, the positioning ring 7 is provided with a plurality of sliding grooves 8, a sliding block 9 is slidably installed inside the sliding groove 8, a mounting column 10 is fixedly installed on the sliding block 9, a ball 11 is movably installed on the mounting column 10, a plurality of contact blocks 12 are fixedly installed on the first mounting ring 4, a buffer spring 13 is fixedly connected to the side end face of the sliding block 9, one end of the mounting column 10 away from the sliding block 9 extends to the inside of the positioning ring 7, the ball 11 is in sliding contact with the surface of the contact block 12, wherein the friction between the ball 11 and the contact block 12 is extremely small, thereby ensuring that the ball 11 cooperates with the contact block 12 and will not affect the rotation of the pump shaft 3.

[0021] In this article, when the pump shaft 3 rotates, the contact block 12 on the first mounting ring 4 contacts the ball 11 in sequence. By utilizing the cooperation between the contact block 12 and the ball 11, the mounting column 10 will transfer the vibration force acting on the pump shaft 3 to the buffer spring 13. Using multiple buffer springs 13 to reduce the impact of the vibration force on the pump shaft 3 helps to improve the stability and operating efficiency of the pump shaft 3, reduce the damage caused by vibration, and effectively reduce the impact of the reverse torque on the pump shaft 3.

[0022] A driving ring 14 is rotatably installed inside the stabilizing frame ring 6 and outside the positioning ring 7, an adjusting block 15 is fixedly installed inside the driving ring 14, and a high adjusting surface 16 and a low adjusting surface 17 are provided on the side end surface of the adjusting block 15, a sliding plate 18 is provided inside the sliding groove 8 and outside the sliding block 9, and an adjusting rod 19 is fixedly installed on the sliding plate 18, one end of the buffer spring 13 away from the sliding block 9 is fixedly connected to the sliding plate 18, and one end of the adjusting rod 19 away from the sliding plate 18 extends to the outside of the positioning ring 7, and the high adjusting surface 16 and the low adjusting surface 17 are in sliding contact, a rotating handle 20 is fixedly installed on the driving ring 14, and a plurality of positioning holes 2 are provided on the side end surface of the driving ring 14 1. A positioning rod 22 is slidably installed on the side end surface of the stabilizing frame ring 6, a fixing ring 23 is fixedly installed on the positioning rod 22, an auxiliary spring 24 is fixedly connected to the fixing ring 23, a pulling plate 25 is fixedly installed on one end of the positioning rod 22, the other end of the positioning rod 22 extends to the inner side of the stabilizing frame ring 6 and is embedded in the positioning hole 21, one end of the auxiliary spring 24 away from the fixing ring 23 is fixedly connected to the inner side surface of the stabilizing frame ring 6, and the pulling plate 25 is fitted with the outer side surface of the stabilizing frame ring 6, wherein the high adjustment surface 16 and the low adjustment surface 17 are not in the same horizontal plane, ensuring that when the adjusting rod 19 contacts the high adjustment surface 16 and the low adjustment surface 17 respectively, the elastic force of the auxiliary spring 24 can be effectively adjusted.

[0023] In this article, the positioning rod 22 inserted in the positioning hole 21 is pulled out by pulling the plate 25, and the rotation of the drive ring 14 is completed by turning the handle 20. The contact between the high adjustment surface 16 and the low adjustment surface 17 on the adjusting block 15 on the drive ring 14 is adjusted by rotating the adjusting rod 19. The elastic force of the buffer spring 13 can be adjusted by cooperating with the high adjustment surface 16 and the low adjustment surface 17. By adjusting the elastic force of the buffer spring 13, the cooperation between the ball 11 and the buffer spring 13 is ensured, which can minimize the influence of vibration and counter-torque on the pump shaft 3.

[0024] The lower end surface of the stabilizing frame ring 6 is provided with an anti-torque component, which is fixedly mounted on an L-shaped rod 26 on the lower end surface of the stabilizing frame ring 6, on which a limit ring 27 is fixedly mounted, and an arc groove 28 is provided inside the limit ring 27, and a mounting block 29 is fixedly mounted on the side end surface of the second mounting ring 5, and a mounting groove 30 is provided inside the mounting block 29, and a telescopic block 31 is slidably mounted inside the mounting groove 30, and a limit spring 32 is fixedly connected to the telescopic block 31, and a telescopic plate 33 is fixedly mounted on the side end surface of the telescopic block 31, and a buffer rod 34 is slidably mounted on the side end surface of the telescopic plate 33, and a limit plate 35 is fixedly mounted on one end of the buffer rod 34, and a buffer plate is fixedly mounted on the other end of the buffer rod 34 36, a telescopic spring 37 is fixedly installed on the buffer plate 36, one end of the limit spring 32 away from the telescopic block 31 is fixedly connected to the inside of the mounting groove 30, and one end of the telescopic spring 37 away from the buffer plate 36 is fixedly connected to the telescopic plate 33, and the position of the telescopic spring 37 is on the outside of the buffer rod 34, wherein the top end of the telescopic plate 33 is set as an arc surface, and the friction between the top end of the telescopic plate 33 and the arc groove 28 is small, ensuring that the telescopic plate 33 can move normally, and since the shape of the arc groove 28 is set as a crescent shape, when the pump shaft 3 rotates normally, the telescopic plate 33 will retract to the inside of the mounting groove 30 at a specified angle of rotation, ensuring that the entire anti-torque assembly will not affect the rotation of the pump shaft 3.

[0025] In this article, when the pump shaft 3 rotates in the opposite direction, the second mounting ring 5 on the pump shaft 3 will drive the mounting block 29 to rotate in the opposite direction, and the mounting block 29 will drive the telescopic plate 33 to slide in the arc groove 28. Through the limiting squeezing of the buffer plate 36 by the arc groove 28, the torque force generated by the pump shaft 3 will effectively absorb and disperse the reverse torque through the cooperation of the buffer plate 36, the telescopic spring 37 and the limiting rod, thereby reducing the impact on the pump shaft 3.

[0026] Working principle: When in use, the pump body 1 drives the pump shaft 3 to rotate, and the connection between the pump shaft 3 and the screw shaft is utilized to ensure that the pump body 1 can drive the screw shaft to rotate; When the pump shaft 3 rotates, the contact block 12 on the first mounting ring 4 contacts the ball 11 in sequence. By utilizing the cooperation between the contact block 12 and the ball 11, the mounting column 10 transmits the vibration force acting on the pump shaft 3 to the buffer spring 13. The multiple buffer springs 13 are used to reduce the influence of the vibration force on the pump shaft 3, which helps to improve the stability and operation efficiency of the pump shaft 3. The positioning rod 22 inserted in the positioning hole 21 is pulled out by pulling the plate 25, and the rotation of the driving ring 14 is completed by rotating the handle 20. By utilizing the rotation of the adjusting block 15 on the driving ring 14, the contact between the adjusting rod 19 and the high adjustment surface 16 and the low adjustment surface 17 on the adjusting block 15 is adjusted. By utilizing the cooperation between the adjusting rod 19 and the high adjustment surface 16 and the low adjustment surface 17, the elastic force of the buffer spring 13 can be adjusted. By adjusting the elastic force of the buffer spring 13, the cooperation between the ball 11 and the buffer spring 13 is ensured, and the influence of vibration and counter-torque on the pump shaft 3 can be minimized. When the pump shaft 3 rotates in the opposite direction, the second mounting ring 5 on the pump shaft 3 will drive the mounting block 29 to rotate in the opposite direction, and the mounting block 29 will drive the telescopic plate 33 to slide in the arc groove 28. Through the limiting squeezing of the buffer plate 36 by the arc groove 28, the torque force generated by the pump shaft 3 will effectively absorb and disperse the reverse torque through the cooperation of the buffer plate 36, the telescopic spring 37 and the limiting rod, thereby reducing the impact on the pump shaft 3.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A downhole anti-torque release screw pump, comprising a pump body (1) and a positioning frame (2), characterized in that: The pump body (1) is fixedly mounted on a positioning frame (2), and a pump shaft (3) is fixedly mounted on the output end of the pump body (1); A first mounting ring (4) and a second mounting ring (5) are fixedly mounted on the side end surface of the pump shaft (3), the first mounting ring (4) being located above the second mounting ring (5); a stabilizing frame ring (6) is fixedly mounted on the positioning frame (2), an auxiliary component is arranged on the stabilizing frame ring (6), the auxiliary component comprises a positioning ring (7) mounted inside the stabilizing frame ring (6), a plurality of sliding grooves (8) are provided on the positioning ring (7), a sliding block (9) is slidably mounted inside the sliding groove (8), a mounting column (10) is fixedly mounted on the sliding block (9), a ball (11) is movably mounted on the mounting column (10), a plurality of contact blocks (12) are fixedly mounted on the first mounting ring (4), a buffer spring (13) is fixedly connected to the side end surface of the sliding block (9), the interior of the stabilizing frame ring (6) and in the stabilizing frame ring (6) are provided with a plurality of sliding grooves (8), a plurality of sliding blocks (9) are slidably mounted inside the sliding groove (8), a mounting column (10) is fixedly mounted on the sliding block (9), a ball (11) is movably mounted on the mounting column (10), a plurality of contact blocks (12) are fixedly mounted on the first mounting ring (4), a buffer spring (13) is fixedly connected to the side end surface of the sliding block (9), a plurality of contact blocks (12) are fixedly mounted on the side end surface of the sliding block (9), a buffer spring (13) is fixedly mounted on the inside of the stabilizing frame ring (6) and in the stabilizing frame ring (6), A driving ring (14) is rotatably mounted on the outer side of the positioning ring (7), an adjusting block (15) is fixedly mounted inside the driving ring (14), a side end surface of the adjusting block (15) is provided with a high adjusting surface (16) and a low adjusting surface (17), a sliding plate (18) is provided inside the sliding groove (8) and on the outer side of the sliding block (9), an adjusting rod (19) is fixedly mounted on the sliding plate (18), a rotating handle (20) is fixedly mounted on the driving ring (14), a plurality of positioning holes (21) are provided on the side end surface of the driving ring (14), a positioning rod (22) is slidably mounted on the side end surface of the stabilizing frame ring (6), a fixing ring (23) is fixedly mounted on the positioning rod (22), an auxiliary spring (24) is fixedly connected to the fixing ring (23), and a pulling plate (25) is fixedly mounted on one end of the positioning rod (22); The lower end surface of the stabilizing frame ring (6) is provided with an anti-torque component.

2. A downhole operation anti-torque release screw pump according to claim 1, characterized in that: One end of the mounting column (10) away from the sliding block (9) extends to the interior of the positioning ring (7), and the ball (11) is in sliding contact with the surface of the contact block (12).

3. The anti-torque release screw pump for downhole operation according to claim 1, characterized in that: One end of the buffer spring (13) away from the sliding block (9) is fixedly connected to the sliding plate (18), and one end of the adjustment rod (19) away from the sliding plate (18) extends to the outside of the positioning ring (7), and the high adjustment surface (16) and the low adjustment surface (17) are in sliding contact.

4. The anti-torque release screw pump for downhole operation according to claim 1, characterized in that: The other end of the positioning rod (22) extends to the inner side of the stabilizing frame ring (6) and is embedded in the positioning hole (21); one end of the auxiliary spring (24) away from the fixing ring (23) is fixedly connected to the inner side of the stabilizing frame ring (6); and the pulling plate (25) is in contact with the outer side of the stabilizing frame ring (6).

5. The anti-torque release screw pump for downhole operation according to claim 1, characterized in that: The anti-torque assembly is fixedly mounted on an L-shaped rod (26) on the lower end surface of the stabilizing frame ring (6); a limit ring (27) is fixedly mounted on the L-shaped rod (26); an arc-shaped groove (28) is provided inside the limit ring (27); a mounting block (29) is fixedly mounted on the side end surface of the second mounting ring (5); a mounting groove (30) is provided inside the mounting block (29); a telescopic block (31) is slidably mounted inside the mounting groove (30); and a limit spring (32) is fixedly connected to the telescopic block (31).

6. A downhole operation anti-torque release screw pump according to claim 5, characterized in that: A telescopic plate (33) is fixedly mounted on the side end surface of the telescopic block (31), a buffer rod (34) is slidably mounted on the side end surface of the telescopic plate (33), a limit plate (35) is fixedly mounted on one end of the buffer rod (34), a buffer plate (36) is fixedly mounted on the other end of the buffer rod (34), and a telescopic spring (37) is fixedly mounted on the buffer plate (36).

7. A downhole operation anti-torque release screw pump according to claim 6, characterized in that: One end of the limit spring (32) away from the telescopic block (31) is fixedly connected to the inside of the mounting groove (30), and one end of the telescopic spring (37) away from the buffer plate (36) is fixedly connected to the telescopic plate (33). The telescopic spring (37) is located outside the buffer rod (34).

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