Automatic sucker rod coupling capturing device

Abstract

The utility model relates to the technical field of energy transmission discloses an automatic capturing device of sucker rod coupling, including the baffle installed in the shell, the baffle passes through the calibre below the shell and is installed in the shell, the baffle root activity has penetrated the pivot, the both sides of shell are all screw -threaded installation screw bush, and the both ends of pivot are penetrated in two screw bushes respectively, the part of pivot that stretches out screw bush is equipped with torsional spring, and the pivot end portion is locked and installed with indicating rod through nut. The size design of the baffle middle groove of the utility model can distinguish the sucker rod and the coupling accurately, can automatically jack up the baffle when the coupling passes, and the position of the coupling is intuitively fed back through the rotation of indicating rod, avoids the hysteresis of manual observation, ensures closing the gate in time when the coupling is in place, reduces the blowout risk.

Description

Technical Field

[0001] This utility model belongs to the field of energy transmission technology, specifically, it relates to an automatic capture device for sucker rod couplings. Background Technology

[0002] During pressurized sucker rod lifting operations, the position of the sucker rod coupling cannot be observed inside the well, which can easily lead to false alarms.

[0003] When closing the gate, a misjudgment may cause the gate to engage with the sucker rod coupling instead of the sucker rod.

[0004] Since the gate valve fittings are used to seal the sucker rod, and the sucker rod coupling is larger than the sucker rod, the gate valve fittings cannot seal the sucker rod coupling, thus increasing the risk of blowout accidents.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] An automatic capture device for sucker rod couplings includes a baffle installed inside a housing; the baffle is installed inside the housing through a lower bore; a rotating shaft is movably inserted through the base of the baffle; threaded sleeves are threaded on both sides of the housing; the two ends of the rotating shaft are respectively inserted through the two threaded sleeves; a torsion spring is fitted on the part of the rotating shaft extending out of the threaded sleeve, and an indicator rod is locked to the end of the rotating shaft by a nut.

[0008] In a preferred embodiment of this utility model, two second O-rings are respectively installed on the threaded sleeve to form a seal with the housing; two third O-rings are installed on the threaded sleeve to form a seal with the rotating shaft.

[0009] In a preferred embodiment of this utility model, hexagonal screws are respectively installed on the indicator rod and the housing, and the two ends of the torsion spring rest on the two hexagonal screws respectively.

[0010] In a preferred embodiment of this utility model, a conversion joint is installed on the side wall of the housing, and a ball valve is installed at the tail end of the conversion joint.

[0011] In a preferred embodiment of this utility model, the lower port of the housing is connected to a lower connector, and a first O-ring is installed on the housing to form a seal with the lower connector.

[0012] In a preferred embodiment of this utility model, the baffle has a groove in the middle, the size of which is larger than the size of the sucker rod but smaller than the size of the sucker rod coupling.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] Precisely detects couplings, improving operational safety: The size design of the baffle's middle groove (larger than the sucker rod size, smaller than the coupling size) can accurately distinguish between the sucker rod and the coupling. When the coupling passes through, it can automatically lift the baffle. The rotation of the indicator rod provides intuitive feedback on the coupling's position, avoiding the lag of manual observation and ensuring that the gate is closed in time when the coupling is in place, reducing the risk of blowout.

[0015] Automatic reset function enables continuous operation: The torsion spring is fixed between the rotating shaft and the indicator rod by the internal hex screw. After the coupling is passed, the torsion spring can drive the baffle and the indicator rod to automatically reset. No additional manual adjustment is required to enter the next capture state. It is suitable for continuous sucker rod raising and lowering operation scenarios and improves operation efficiency.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] In the attached diagram:

[0018] Figure 1 This is a side view sectional structural diagram of the present invention;

[0019] Figure 2 This is a top view sectional structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure when the sucker rod is in place;

[0021] Figure 4 This is a schematic diagram of the structure when the sucker rod coupling is in place.

[0022] In the diagram: 1-Housing; 2-First O-ring seal; 3-Lower connector; 4-Nut; 5-Indicator rod; 6-Torsion spring; 7-Threaded sleeve; 8-Second O-ring seal; 9-Third O-ring seal; 10-Baffle; 11-Shaft; 12-Hex socket head cap screw; 13-Adapter connector; 14-Ball valve. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0024] like Figures 1 to 4 As shown, an automatic sucker rod coupling capture device includes:

[0025] A baffle 10 is installed inside the housing 1; the baffle 10 is installed inside the housing 1 through the lower diameter of the housing 1, and the baffle 10 has a groove in the middle, the size of which is larger than the size of the sucker rod but smaller than the size of the sucker rod coupling.

[0026] A rotating shaft 11 is movably inserted through the base of the baffle 10; threaded sleeves 7 are threadedly installed on both sides of the housing 1; the two ends of the rotating shaft 11 are respectively inserted through the two threaded sleeves 7.

[0027] A torsion spring 6 is fitted onto the part of the rotating shaft 11 that extends out of the threaded sleeve 7, and an indicator rod 5 is locked onto the end of the rotating shaft 11 by a nut 4.

[0028] like Figures 1 to 2 As shown, furthermore, two second O-rings 8 are installed on the threaded sleeve 7 to form a seal with the housing 1; two third O-rings 9 are installed on the threaded sleeve 7 to form a seal with the rotating shaft 11.

[0029] like Figures 1 to 2 As shown, furthermore, hexagonal screws 12 are installed on the indicator rod 5 and the housing 1 respectively, and the two ends of the torsion spring 6 rest on the two hexagonal screws 12 respectively.

[0030] like Figures 1 to 2 As shown, further, a conversion connector 13 is installed on the side wall of the housing 1, and a ball valve 14 is installed at the tail end of the conversion connector 13.

[0031] like Figures 1 to 2 As shown, furthermore, the lower port of the housing 1 is connected to a lower connector 3, and a first O-ring 2 is installed on the housing 1 to form a seal with the lower connector 3.

[0032] The implementation principle of the automatic sucker rod coupling capture device in this embodiment is as follows:

[0033] The assembly process is as follows: First, place the baffle 10 into the cavity through the lower bore of the housing 1. Connect the rotating shaft 11 through the hole on the side of the housing and the hole on the baffle. Install two second O-rings 8 and two third O-rings 9 on the threaded sleeve 7, then pass the threaded sleeve through the rotating shaft 11 and install it into the hole on the side of the housing 1 and tighten it. Install one hex socket head cap screw 12 on the housing 1. Install the torsion spring 6 on the threaded sleeve 7. Install the indicator rod 5 on the rotating shaft and tighten it with the nut 4. Install the hex socket head cap screw 12 on the indicator rod. Place the two ends of the torsion spring 6 on the two hex socket head cap screws 12 respectively. The installation of one side of the indicator device is completed. The installation of the other side is the same. Install the first O-ring 2 into the housing 1. Assemble the lower connector 3 onto the housing 1. Assemble the conversion connector 13 onto the housing 1. Assemble the ball valve 14 onto the conversion connector 13. The assembly is complete.

[0034] like Figure 1-4As shown, the principle is as follows: The sucker rod coupling catcher is installed between two sucker rod blowout preventers via a snap-fit ​​connection. A slot is cut into the middle of the baffle 10; the slot's size is slightly larger than the sucker rod size but smaller than the sucker rod coupling size. During operation, the sucker rod can pass through the slot in the middle of the baffle 10. When the sucker rod coupling moves below the baffle 10, due to the size difference, the sucker rod coupling will lift the baffle 10. The lifted baffle 10 will drive the mating shaft 11, and the rotation of the shaft 11 will drive the indicator rod 5, which is assembled with the shaft. When the indicator rod 5 is observed to rotate, it indicates that the sucker rod coupling has moved into position, and the gate can be closed. Manually lifting the indicator rod 6 allows the sucker rod coupling to pass through the baffle 10. Due to the elasticity of the torsion spring 6, the baffle 10 can return to a horizontal state, and operation can continue.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0037] The above description is only a specific embodiment of the present utility model. Various examples and illustrations do not constitute a limitation on the substantive content of the present utility model. Those skilled in the art can make modifications or variations to the specific embodiments described above after reading the description without departing from the essence and scope of the utility model.

Claims

1. An automatic capture device for sucker rod couplings, characterized in that, include: A baffle (10) is installed inside the housing (1); the baffle (10) is installed inside the housing (1) through a lower bore. A rotating shaft (11) is movably inserted through the base of the baffle (10); threaded sleeves (7) are threaded on both sides of the housing (1); the two ends of the rotating shaft (11) are respectively inserted through the two threaded sleeves (7); A torsion spring (6) is fitted on the part of the shaft (11) that extends out of the threaded sleeve (7), and an indicator rod (5) is locked at the end of the shaft (11) by a nut (4).

2. The automatic sucker rod coupling capture device according to claim 1, characterized in that, Two second O-rings (8) are installed on the threaded sleeve (7) respectively, forming a seal between it and the housing (1).

3. The automatic sucker rod coupling capture device according to claim 1, characterized in that, Two third O-rings (9) are installed on the threaded sleeve (7) to form a seal with the rotating shaft (11).

4. The automatic sucker rod coupling capture device according to claim 1, characterized in that, The indicator rod (5) and the housing (1) are respectively equipped with hexagonal screws (12), and the two ends of the torsion spring (6) rest on the two hexagonal screws (12).

5. The automatic sucker rod coupling capture device according to claim 1, characterized in that, The side wall of the housing (1) is equipped with a conversion joint (13), and a ball valve (14) is installed at the tail end of the conversion joint (13).

6. The automatic sucker rod coupling capture device according to claim 1, characterized in that, The lower port of the housing (1) is connected to a lower connector (3), and a first O-ring (2) is installed on the housing (1) to form a seal with the lower port of the lower connector (3).

7. The automatic sucker rod coupling capture device according to claim 1, characterized in that, The baffle (10) has a groove in the middle. The size of the groove is larger than the size of the sucker rod, but smaller than the size of the sucker rod coupling.

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