Polish rod square clip with anti-loosening effect for oil exploitation

Abstract

The utility model relates to the technical field of oil and gas exploitation, in particular to a polish rod square clip with an anti-loosening effect for oil exploitation, which comprises a first sealing pipe, and is characterized in that the first sealing pipe is clamped on a second sealing pipe, and a polish rod is connected in the first sealing pipe and the second sealing pipe in a sealing manner; the buckling position of the first sealing pipe and the second sealing pipe is clamped in a pressing assembly, the pressing assembly comprises a first pressing ring and a second pressing ring, and the first pressing ring and the second pressing ring are buckled with each other. The first sealing pipe and the second sealing pipe are conveniently fixed by buckling the first pressing ring and the second pressing ring, the first sealing pipe is tightly pressed on the second sealing pipe by arranging the pressing plate, and the pressing screw is tightened to fix the first sealing pipe and the second sealing pipe, so that the first sealing pipe and the second sealing pipe can be effectively prevented from loosening, and the sealing effect is improved. Even if the first sealing pipe and the second sealing pipe are loosened, the pressing screw is continuously screwed, pressing can be conducted again, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas exploitation, in particular to a polished rod square clip for oil exploitation with anti-loosening effect. Background Art

[0002] In oilfield production, as the formation energy gradually decreases, pumping oil has become a common production method. In this oil production process, in order to prevent crude oil and natural gas from leaking from the bare rod, a sealing device - a bare rod sealer is usually set. Conventional bare rod sealers are generally composed of a rubber gate and a packing box. The interference fit between the "O"-shaped rubber packing in the packing box and the bare rod plays the role of sealing the bare rod, ensuring that crude oil will not leak during the production process;

[0003] A Chinese patent with publication number CN216922065U was searched and found to disclose a bare rod sealer.

[0004] The above technical scheme includes: an upper pressure cap, an outer tube is fixedly sealed in the lower end of the upper pressure cap, a sleeve is fixedly sealed in the lower end of the outer tube, a universal adjustment body is fixedly sealed in the lower end of the sleeve, a spherical body at the lower part of the universal adjustment body is rotatably sealed and connected to the upper end of the lower joint, a sealing sleeve is installed in the outer tube between the upper pressure cap and the sleeve, a spiral groove is provided on the inner edge of the sealing sleeve, a sealing strip is located in the spiral groove, the light rod passes through the upper pressure cap, the sealing sleeve, the outer tube, the sleeve, the universal adjustment body and the lower joint, the sealing sleeve is slidably sealed and connected to the outer edge of the light rod through the sealing strip, and a plurality of V-shaped secondary seals are installed in the sleeve. The utility model has a simple structure, is easy to operate, has a good sealing effect, is easy to maintain, can lubricate the light rod, prevents the light rod from generating a large friction with the sealer when moving up and down, prevents power loss, and reduces energy consumption in oil field production;

[0005] However, in the above solution, when the bare rod shakes, the connection between the upper and lower parts of the technology lacks protection and is prone to loosening, causing sealing failure.

[0006] For this reason, we propose a square clip for oil mining with polished rod and anti-loosening effect. Utility Model Content

[0007] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a polished rod square clip for oil mining with anti-loosening effect.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a square clamp for a light rod used for oil mining with an anti-loosening effect, including a first sealing tube, characterized in that: the first sealing tube is clamped on the second sealing tube, the first sealing tube and the second sealing tube are sealed with a light rod, the buckling part of the first sealing tube and the second sealing tube is clamped in a clamping assembly, the clamping assembly includes a first pressing ring and a second pressing ring, and the first pressing ring and the second pressing ring are buckled with each other.

[0009] Preferably, a slot is provided in each of the first pressing ring and the second pressing ring, connecting blocks are provided at both ends of the first pressing ring and the second pressing ring, and the connecting blocks are fixedly connected by connecting screws.

[0010] Preferably, a first valve port is disposed at the lower end of the first sealing tube, a second valve port is disposed at the lower end of the second sealing tube, and a sealing gasket is disposed between the first valve port and the second valve port.

[0011] Preferably, two symmetrically arranged docking grooves are formed on the surface of the first valve port, and the cross-section of the docking grooves is trapezoidal.

[0012] Preferably, two symmetrically arranged docking blocks are fixedly connected to the upper surface of the second valve port, and the cross-section of the docking blocks is trapezoidal.

[0013] Preferably, the first valve port and the second valve port are connected by sliding.

[0014] The utility model provides a polished rod square clip for oil mining with anti-loosening effect, which has the following improvements and advantages compared with the prior art:

[0015] (1) The utility model adopts a clamping assembly to buckle the first sealing tube and the second sealing tube therein, and the buckling part of the first sealing tube and the second sealing tube is arranged to be clamped in the clamping assembly, the clamping assembly includes a first pressing ring and a second pressing ring, the first pressing ring and the second pressing ring are buckled with each other, and the first pressing ring and the second pressing ring are both provided with a clamping groove, and the first pressing ring and the second pressing ring are both provided with a connecting block at both ends, and the connecting blocks are fixedly connected by connecting screws, and the upper ends of the first pressing ring and the second pressing ring are both provided with a threaded groove, and the threaded groove is threadedly connected with a tightening screw, and the tightening screw passes through the threaded groove and abuts against the pressure plate, and the pressure plate is arranged in the clamping groove, and the first sealing tube and the second sealing tube are conveniently fixed by setting the first pressing ring and the second pressing ring to buckle, and the first sealing tube is pressed on the second sealing tube by setting the pressure plate, and the tightening screw is tightened to fix it, which can effectively prevent the first sealing tube and the second sealing tube from loosening, and even if the first sealing tube and the second sealing tube are loose, they can be tightened again by continuing to tighten the tightening screw, which is convenient for maintenance.

[0016] (2) The utility model adopts a first sealing tube clamped on the second sealing tube, and a first valve port is arranged at the lower end of the first sealing tube, and a second valve port is arranged at the lower end of the second sealing tube, and a sealing gasket is arranged between the first valve port and the second valve port, and two symmetrically arranged docking grooves are opened on the surface of the first valve port, and the cross section of the docking groove is trapezoidal, and two symmetrically arranged docking blocks are fixedly connected on the upper surface of the second valve port, and the cross section of the docking block is trapezoidal, and the characteristic is that the first valve port and the second valve port are clamped in a sliding manner, and the docking groove of the first valve port is aligned with the docking block, and it is slid to a connected state, and the docking block is clamped in the docking groove. It can facilitate the connection of the first sealing tube and the second sealing tube, enhance stability, and make it difficult to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure plane of the utility model.

[0020] Legend:

[0021] 10. First sealing tube; 11. First valve port; 12. Second sealing tube; 13. Second valve port; 14. Light rod; 15. Docking groove; 16. Docking block; 17. Sealing gasket; 20. Clamping assembly; 21. First pressing ring; 22. Second pressing ring; 23. Connecting block; 24. Connecting screw; 25. Tightening screw; 26. Threaded groove; 27. Pressing plate; 28. Card slot. DETAILED DESCRIPTION

[0022] Below, the invention is further described in conjunction with the accompanying drawings and specific embodiments:

[0023] Example 1

[0024] See also Figure 1 to Figure 2Embodiment 1 is described, including a first sealing tube 10, the first sealing tube 10 is clamped on the second sealing tube 12, the first sealing tube 10 and the second sealing tube 12 are sealed and connected with a light rod 14, the first sealing tube 10 and the second sealing tube 12 are clamped in the clamping assembly 20 at the buckling part, the clamping assembly 20 includes a first pressing ring 21 and a second pressing ring 22, the first pressing ring 21 and the second pressing ring 22 are buckled with each other, the first pressing ring 21 and the second pressing ring 22 are both provided with a card slot 28, the first pressing ring 21 and the second pressing ring 22 are both provided with a connecting block 23 at both ends, and the connecting block The first and second compression rings 21 and 22 are fixedly connected by connecting screws 24 to cover the connection, prevent the connection from loosening, and play a limiting effect. The upper ends of the first compression ring 21 and the second compression ring 22 are both provided with thread grooves 26, and the thread grooves 26 are internally threaded with a clamping screw 25, which passes through the thread grooves 26 and abuts against the pressure plate 27. The pressure plate 27 is arranged in the card groove 28. By rotating the clamping screw 25, the clamping screw 25 moves in the thread groove 26, and the pressure plate 27 is pressed downward, thereby applying pressure to the second valve port 13 and the second valve port 13, so that they are tightly connected;

[0025] In the present embodiment, the connection between the first sealing tube 10 and the second sealing tube 12 is fastened with the first pressing ring 21 and the second pressing ring 22, and the first pressing ring 21 and the second pressing ring 22 are connected to each other through the connecting block 23 and the connecting screw 24, so that the first valve port 11 and the second valve port 13 are fastened in the slot 28, and the tightening screw 25 is rotated, and the tightening screw 25 moves in the thread groove 26 to press the pressure plate 27 downward, thereby applying pressure to the second valve port 13 and the second valve port 13 to make them tightly connected. When the connection is loose, the tightening screw 25 is tightened so that the pressure plate 27 presses the first valve port 11 downward to make it connected again, which is convenient for maintenance and can prevent the connection from loosening.

[0026] Example 2

[0027] See also Figure 1 and Figure 2Embodiment 2 is described, including a first sealing tube 10 clamped on a second sealing tube 12, a first valve port 11 is provided at the lower end of the first sealing tube 10, a second valve port 13 is provided at the lower end of the second sealing tube 12, a sealing gasket 17 is provided between the first valve port 11 and the second valve port 13, the provision of the sealing gasket 17 can ensure the sealing of the connection, two symmetrically arranged docking grooves 15 are provided on the surface of the first valve port 11, the docking grooves 15 are provided to limit the second valve port 13 to avoid disorderly shaking, the cross section of the docking grooves 15 is trapezoidal, and the connection can be strengthened, two symmetrically arranged docking blocks 16 are fixedly connected to the upper surface of the second valve port 13, the cross section of the docking blocks 16 is trapezoidal, the docking blocks 16 are used in conjunction with the docking grooves 15, the two have the same cross section, can fit together, and prevent loosening, the first valve port 11 and the second valve port 13 are clamped by sliding, the docking groove 15 is aligned with the docking block 16, and then the first sealing tube 10 is pushed to be clamped in the docking groove 15;

[0028] In this embodiment, the docking groove 15 of the first valve port 11 is aligned with the docking block 16 and slid to a connected state, and the docking block 16 is stuck in the docking groove 15. This facilitates the connection of the first sealing tube 10 and the second sealing tube 12, enhances stability, and prevents them from loosening.

Claims

1. A square clip for oil mining with a polished rod having an anti-loosening effect, comprising a first sealing tube (10), characterized in that: The first sealing tube (10) is clamped on the second sealing tube (12); a light rod (14) is sealedly connected inside the first sealing tube (10) and the second sealing tube (12); the buckling part of the first sealing tube (10) and the second sealing tube (12) is clamped in a clamping assembly (20); the clamping assembly (20) comprises a first pressing ring (21) and a second pressing ring (22); the first pressing ring (21) and the second pressing ring (22) are buckled with each other.

2. A square clip for a polished rod (14) for oil mining with anti-loosening effect according to claim 1, characterized in that: A clamping groove (28) is provided in each of the first pressing ring (21) and the second pressing ring (22); connecting blocks (23) are provided at both ends of the first pressing ring (21) and the second pressing ring (22); and the connecting blocks (23) are fixedly connected by connecting screws (24).

3. A square clip for a polished rod (14) for oil mining with anti-loosening effect according to claim 2, characterized in that: The first pressure ring (21) and the second pressure ring (22) are both provided with a thread groove (26) at their upper ends, and a clamping screw (25) is connected to the inner thread of the thread groove (26). The clamping screw (25) passes through the thread groove (26) and abuts against a pressure plate (27), and the pressure plate (27) is arranged in a clamping groove (28).

4. A square clip for a polished rod (14) for oil mining with anti-loosening effect according to claim 1, characterized in that: A first valve port (11) is provided at the lower end of the first sealing tube (10), a second valve port (13) is provided at the lower end of the second sealing tube (12), and a sealing gasket (17) is provided between the first valve port (11) and the second valve port (13).

5. A square clip for a polished rod (14) for oil mining with anti-loosening effect according to claim 4, characterized in that: The surface of the first valve port (11) is provided with two symmetrically arranged docking grooves (15), and the cross section of the docking grooves (15) is trapezoidal.

6. A square clip for a polished rod (14) for oil mining with anti-loosening effect according to claim 4, characterized in that: Two symmetrically arranged docking blocks (16) are fixedly connected to the upper surface of the second valve port (13), and the cross section of the docking blocks (16) is trapezoidal.

7. A square clip for a polished rod (14) for oil mining with anti-loosening effect according to claim 4, characterized in that: The first valve port (11) and the second valve port (13) are connected by sliding.

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