Detachable resonance weakening oil pipe joint assembly

Abstract

The invention relates to the technical field of oil and gas well engineering, and particularly discloses a detachable resonance weakening oil pipe connector assembly which comprises an outer sleeve, a wave guide assembly, a resonance module and an electric control cable. Connecting pipes are fixedly connected to the two ends of the outer sleeve, and the wave guide assembly is detachably assembled on the inner wall of the outer sleeve; comprising a wave guide support and wave guide rods which are uniformly arrayed along the circumference of the wave guide support, the wave guide rods are detachably connected with the wave guide support, a resonance module is in mechanical butt joint with the wave guide rods through the wave guide support, the resonance module is a piezoelectric transducer, one end of an electric control cable penetrates through an outer sleeve to be electrically connected with the resonance module, and the other end of the electric control cable penetrates through an inner sleeve. And the other end is connected with a ground console. The vibration transmission efficiency is guaranteed through multiple structures. The wave guide rod is located and attached to the oil pipe through the clamping groove, and coupling is enhanced through the high-temperature sound guide gel. Reverse vibration output by the resonance module is transmitted to the wave guide rod through the wave guide support, the locking structure of the support and the wave guide rod ensures that looseness is avoided under high-frequency vibration, and oil pipe resonance is efficiently weakened.

Description

Technical Field

[0001] This invention relates to the field of oil and gas well engineering technology, and in particular to a detachable resonance-weakening tubing joint assembly. Background Technology

[0002] In oil extraction and oil and gas transportation, oil pipelines are subjected to high temperature, high pressure and vibration conditions for a long time. They are prone to fatigue cracks and sealing failures due to resonance, which threatens operational safety and shortens service life. Resonance weakening technology has become a core requirement.

[0003] Existing technologies have significant limitations: material improvement is costly and lacks versatility; passive structure reinforcement is inconvenient to disassemble and maintain, and has low adaptability; while active vibration cancellation schemes are direct, insufficient fit between the waveguide assembly and the tubing leads to inefficient vibration transmission; the integrated design of the resonant module and waveguide structure results in high maintenance costs; the rudimentary sealing is susceptible to corrosion from downhole media; and the positioning and locking structure is prone to loosening under high-frequency vibration. Furthermore, existing active devices rely on bolt fastening, resulting in low disassembly and assembly efficiency; the waveguide rod fit requires manual calibration, leading to uneven transmission; and the lack of coordinated design between sealing and sound guidance results in easy aging of the seal and significant vibration loss at high temperatures.

[0004] In summary, existing technologies struggle to balance efficiency, convenience, and durability, making the development of detachable, high-efficiency resonance-weakening tubing joint components of urgent engineering value. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a detachable resonance-weakening oil pipe joint assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A detachable resonant weakening oil pipe joint assembly includes: an outer sleeve, a waveguide assembly, a resonant module, and an electrical control cable. The outer sleeve is fixedly connected to both ends of a connecting pipe, and the connecting pipe is provided with a threaded groove that is compatible with a standard oil pipe. The waveguide assembly is detachably mounted on the inner wall of the outer sleeve, including a waveguide bracket and at least three waveguide rods evenly arrayed along the circumference of the waveguide bracket. The waveguide bracket is a ring structure and is detachably fixed to the inner wall of the outer sleeve. The waveguide rods are detachably connected to the waveguide bracket, and the end of the waveguide rod away from the resonant module is in contact with the outer wall of the oil pipe. The resonance module is mechanically connected to the waveguide rod via a waveguide bracket. The resonance module is a piezoelectric transducer whose output vibration frequency matches the natural frequency of the oil pipe. It is used to transmit reverse vibration to the oil pipe through the waveguide rod to weaken the resonance of the oil pipe. One end of the electrical control cable passes through the outer sleeve and is electrically connected to the resonance module, while the other end is used to connect to the ground control console.

[0007] Preferably, the inner wall of the outer sleeve is provided with an annular first receiving groove, the waveguide bracket is adapted to be embedded in the first receiving groove, and is detachably fixed to the outer sleeve by a positioning component.

[0008] Preferably, the waveguide bracket has at least three mounting holes evenly distributed along the circumference, and the waveguide rods are fitted into the mounting holes one by one and fixed by locking components. One end of the waveguide rod extends through the central clearance hole of the waveguide bracket to the vibration output end of the resonant module.

[0009] Preferably, the inner wall of the outer sleeve is provided with a first slot corresponding to the waveguide rod. The end of the waveguide rod away from the resonant module is embedded in the first slot. The gap between the waveguide rod and the first slot is filled with high-temperature acoustic adhesive and expanded graphite sealant from the inside to the outside. The first slot is used to limit the position of the waveguide rod and ensure the fit between the waveguide rod and the outer wall of the oil pipe.

[0010] Preferably, the positioning component includes at least one positioning boss arranged circumferentially along the inner wall of the first accommodating groove, the waveguide bracket has positioning slots corresponding to the positioning bosses, the positioning slots are fitted with elastic anti-slip washers, the sidewalls of the positioning bosses have annular anti-slip grooves, and the anti-slip washers are fitted into the anti-slip grooves.

[0011] Preferably, the locking assembly includes a locking collar fixedly fitted into the mounting hole, and a connecting ring is fixedly sleeved on the outer wall of the waveguide rod. The connecting ring and the locking collar are fixed by a detachable connector.

[0012] Preferably, the detachable connector includes an elastic connecting bracket installed on the inner wall of the locking collar. The inner wall of the locking collar has an annular mounting groove. The elastic connecting bracket is arranged in a ring array in the annular mounting groove. Connecting protrusions are fixedly installed at both ends of the elastic connecting bracket. The connecting protrusions are symmetrically inclined. The outer wall of the connecting ring has a connecting slot adapted to the connecting protrusions.

[0013] Preferably, at least two telescopic springs evenly distributed along a straight line are provided between the elastic connecting bracket and the groove wall of the mounting groove. One end of the telescopic spring is fixedly connected to the elastic connecting bracket, and the other end abuts against the groove wall of the mounting groove, which is used to drive the connecting protrusion to clamp the connecting groove.

[0014] The present invention has the following beneficial effects: 1. The tubing connector assembly proposed in this invention ensures the accuracy and efficiency of vibration transmission through multiple structural designs. The waveguide rod is positioned by the first slot and fits tightly against the outer wall of the tubing. The high-temperature acoustic adhesive filling the gap enhances the vibration coupling effect and avoids vibration loss. The resonant module outputs a reverse vibration that precisely matches the natural frequency of the tubing and is directly transmitted to the waveguide rod through the center clearance hole of the waveguide bracket, forming an efficient vibration transmission link from the module to the tubing. At the same time, the waveguide bracket is rigidly locked by the positioning boss and anti-slip washer, and the waveguide rod is rigidly locked by the elastic connecting bracket and the pre-compressed telescopic spring, ensuring that there is no loosening of each component under high-frequency vibration, further improving the stability of reverse vibration transmission and significantly weakening the resonance amplitude of the tubing.

[0015] 2. The tubing connector assembly proposed in this invention adopts a combination of interlocking and snap-fit ​​detachable structure. The waveguide support achieves quick assembly and disassembly through the interlocking of positioning bosses and slots, eliminating the need for bolts or other fasteners. The waveguide rod can be installed and removed by axial insertion and removal through the elastic snap-fit ​​structure of connecting bosses, slots, and telescopic springs, without the need for special tools. The independent assembly design of each core component means that only the corresponding component needs to be replaced when there is partial damage, avoiding the problem of the entire integrated structure being scrapped. Compared with traditional bolt-fastened devices, it is suitable for narrow downhole spaces and frequent maintenance scenarios, significantly reducing maintenance costs and downtime.

[0016] 3. The tubing connector assembly proposed in this invention employs a layered protective design with high-temperature sound-conducting adhesive and expanded graphite sealant to fill the gap between the waveguide rod and the first slot. The inner layer of sound-conducting adhesive serves both sound conduction and initial sealing, while the outer layer of expanded graphite utilizes its elastic rebound properties to fill the gap, forming a high-temperature and oil-resistant sealing barrier that effectively isolates downhole moisture and oil from intrusion. The fluororubber anti-slip gasket of the positioning assembly and the elastic connecting bracket of the locking assembly are both made of temperature- and corrosion-resistant materials and have deformation buffering capabilities, which can absorb vibration impacts and prevent component wear. The entire structure is adaptable to complex downhole working conditions with high temperature, high pressure, and high-frequency vibration, and the sealing life is significantly extended compared to traditional devices, improving the stability and durability of the device during service. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the oil pipe joint assembly proposed in this invention; Figure 2 This is a three-dimensional structural schematic diagram of the waveguide assembly proposed in this invention; Figure 3 This is a partial enlarged view of the waveguide proposed in this invention; Figure 4 This is a partial schematic diagram of the locking assembly proposed in this invention; Figure 5 This is a three-dimensional structural diagram of the elastic connection bracket proposed in this invention; Figure 6 This is a partial cross-sectional view of the outer sleeve proposed in this invention; In the diagram: 1. Outer sleeve; 2. Waveguide assembly; 3. Resonance module; 11. Connecting pipe; 12. Threaded groove; 21. Waveguide bracket; 22. Waveguide rod; 13. First receiving groove; 4. Positioning assembly; 211. Mounting hole; 5. Locking assembly; 14. First slot; 41. Positioning boss; 42. Positioning slot hole; 43. Anti-slip groove; 51. Locking collar; 52. Connecting ring; 53. Detachable connector; 531. Elastic connecting bracket; 532. Mounting groove; 533. Connecting protrusion; 534. Connecting slot; 535. Telescopic spring. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Reference Figure 1 , Figure 2 A detachable resonant weakening oil pipe joint assembly includes: an outer sleeve 1, a waveguide assembly 2, a resonant module 3, and an electrical control cable. The outer sleeve 1 is fixedly connected to two connecting pipes 11 at both ends. In this embodiment, there are two connecting pipes 11, which are located at both ends of the outer sleeve 1 respectively. The connecting pipes 11 are provided with threaded grooves 12 that are compatible with standard oil pipes. The waveguide assembly 2 is detachably mounted on the inner wall of the outer sleeve 1, including a waveguide bracket 21 and at least one waveguide rod 22 evenly arrayed along the circumference of the waveguide bracket 21. The waveguide bracket 21 is a ring structure and is detachably fixed to the inner wall of the outer sleeve 1. The waveguide rod 22 is detachably connected to the waveguide bracket 21, and the end of the waveguide rod 22 away from the resonant module 3 is attached to the outer wall of the oil pipe. The resonance module 3 is mechanically connected to the waveguide rod 22 via the waveguide bracket 21. The resonance module 3 is a piezoelectric transducer. In this embodiment, its output vibration frequency matches the natural frequency of the oil pipe. It can convert electrical signals into mechanical vibrations, which are used to transmit reverse vibrations to the oil pipe through the waveguide rod 22 to weaken the resonance of the oil pipe. One end of the electrical control cable passes through the outer sleeve 1 and is electrically connected to the resonant module 3, while the other end is used to connect to the ground control console. In this embodiment, the resonant module 3 can be started, stopped, its frequency adjusted, and its status monitored.

[0021] Reference Figure 1 , Figure 2 The inner wall of the outer sleeve 1 is provided with an annular first receiving groove 13, and the waveguide bracket 21 is adapted to be embedded in the first receiving groove 13. In this embodiment, the outer wall of the waveguide bracket 11 is closely fitted with the inner wall of the first receiving groove 13 to form a radial limit, and at the same time, it is detachably fixed to the outer sleeve 1 by the circumferentially distributed positioning components 4.

[0022] Reference Figure 1 , Figure 2 The waveguide bracket 21 has at least one mounting hole 211 evenly opened along the circumferential direction. In this embodiment, the mounting hole 211 is radially through-hole designed. The waveguide rod 22 is embedded in the mounting hole 211 one by one and is fixed by the locking component 5. One end of the waveguide rod 22 extends through the central clearance hole of the waveguide bracket 21 to the vibration output end of the resonant module 3.

[0023] Reference Figure 1 , Figure 2 The inner wall of the outer sleeve 1 is provided with a first slot 14 corresponding to the waveguide rod 22. In this embodiment, the first slot 14 adopts an arc-shaped groove structure that precisely matches the end profile of the end of the waveguide rod 22 away from the resonant module 3. The slot is located at the end of the extension path of the waveguide rod 22, near the outer wall of the oil pipe, in the inner wall area of ​​the outer sleeve 1. The depth and width of the first slot 14 are preferably designed to just accommodate the end of the waveguide rod 22 and leave a 0.2-0.5mm filling gap. The end of the waveguide rod 22 away from the resonant module 3 is embedded in the first slot 14. In this embodiment, the outer wall of the end of the waveguide rod 22 and the inner wall of the slot form a surface contact preliminary positioning fit, which restricts the radial swing of the end of the waveguide rod 22. The gap between the waveguide rod 22 and the first slot 14 is filled from the inside to the outside. Filled with high-temperature acoustic conductive adhesive and expanded graphite sealant, in this embodiment, the inner high-temperature acoustic conductive adhesive is a special adhesive material with acoustic impedance matching metal, which can not only enhance the vibration coupling efficiency between the waveguide rod 22 and the slot, but also fix the end of the waveguide rod 22 secondary through the adhesive effect. The outer expanded graphite sealant utilizes its high temperature resistance and elastic rebound characteristics to fill the remaining gaps and form a sealing barrier to prevent downhole oil, moisture and other media from entering the gap. The first slot 14 restricts the axial movement and radial displacement of the end of the waveguide rod 22 through physical limiting effect, ensuring that the waveguide rod 22 always maintains a tight fit with the outer wall of the tubing, avoiding the formation of fitting gaps due to high-frequency vibration or assembly deviation, and providing structural guarantee for the efficient transmission of reverse vibration from the waveguide rod 22 to the tubing.

[0024] Reference Figure 1 , Figure 2The positioning component 4 includes at least one positioning boss 41 arranged circumferentially along the inner wall of the first receiving groove 13. The waveguide bracket 21 has positioning slots 42 corresponding to the positioning bosses 41. An elastic anti-slip washer is embedded in the positioning slot 42. In this embodiment, the elastic anti-slip washer is made of oil-resistant and heat-resistant fluororubber. The side wall of the positioning boss 41 has an annular anti-slip groove 43. The anti-slip washer is fitted into the anti-slip groove 43. In this embodiment, the positioning boss 41 is integrally formed in the preset limiting area of ​​the inner wall of the first receiving groove 13. Its cross-section is trapezoidal (narrower at the top and wider at the bottom) to improve the fitting stability. The height matches the depth of the first receiving groove 13. The positioning slots 42 are opened at the position of the positioning boss 41 on the outer edge of the waveguide bracket 21. The diameter of the slot is precisely matched with the outer diameter of the positioning boss 41 (the gap is controlled at 0.1-0.2mm).

[0025] When the waveguide bracket 21 is fitted into the first receiving groove 13, the positioning bosses 41 are inserted into the positioning slots 42 one by one. The elastic anti-slip washers pre-installed in the positioning slots 42 tightly cover the outer wall of the positioning bosses 41, and the inner ring protrusion structure of the washers is adapted to be inserted into the annular anti-slip grooves 43 on the side wall of the positioning bosses 41, forming a dual constraint of circumferential locking and axial limiting. The fitting of the positioning bosses 41 and the positioning slots 42 directly restricts the circumferential rotation of the waveguide bracket 21. The elastic anti-slip washers inserted into the anti-slip grooves 43 effectively prevent the waveguide bracket 21 from moving axially along the receiving groove. At the same time, the deformation characteristics of the elastic washers can buffer the vibration impact transmitted by the resonant module 3, avoiding component wear caused by hard contact. The fitting structure does not require additional fasteners, which not only ensures positioning accuracy and anti-slip stability, but also realizes the quick disassembly and maintenance of the waveguide bracket 21.

[0026] Reference Figure 1 , Figure 2 The locking assembly 5 includes a locking collar 51 fixedly embedded in the mounting hole 211. A connecting ring 52 is fixedly sleeved on the outer wall of the waveguide 22. The connecting ring 52 and the locking collar 51 are fixed by a detachable connector 53. In this embodiment, the locking collar 51 is firmly fixed in the mounting hole 211 by interference fit to provide a reference for connection. The rigid connection between the connecting ring 52 and the waveguide 22 allows the locking force to be directly applied to the waveguide 22. The detachable connector 53 restricts the axial movement of the waveguide 22 by axial locking. At the same time, the end face of the connecting ring 52 and the locking collar 51 is used to constrain its radial rotation. This ensures the positional stability of the waveguide 22 under high-frequency vibration to ensure vibration transmission efficiency. It also allows for quick disassembly and replacement of the waveguide 22 by disassembling the connector, taking into account both the reliability of fixation and the convenience of maintenance.

[0027] Reference Figure 1 , Figure 2The detachable connector 53 includes an elastic connecting bracket 531 installed on the inner wall of the locking collar 51. In this embodiment, an annular mounting groove 532 is provided on the inner wall of the locking collar 51 in the circumferential direction to provide installation and positioning space for the elastic connecting bracket 531. In this embodiment, the elastic connecting bracket 531 is evenly distributed in multiple annular arrays within the annular mounting groove 532. Connecting protrusions 533 are fixedly installed at both ends of the elastic connecting bracket 531. In this embodiment, the connecting protrusions 533 are symmetrically inclined (inclination angle is 30-45°), and the end face is rounded to reduce insertion and extraction resistance. A connecting slot 534 is provided on the outer wall of the connecting ring 52 at the position corresponding to the elastic connecting bracket 531, which is completely adapted to the number, shape and inclination angle of the connecting protrusions 533. The depth of the slot is slightly greater than the thickness of the connecting protrusions 533.

[0028] When the waveguide rod 22 drives the connecting ring 52 to insert into the locking sleeve 51, the outer wall of the connecting ring 52 presses against the inclined surface of the connecting protrusion 533, forcing the elastic connecting bracket 531 to retract into the annular mounting groove 532. When the connecting protrusion 533 is aligned with the connecting slot 534, the elastic connecting bracket 531 elastically resets, causing the connecting protrusion 533 to be inserted into the connecting slot 534. The fit of the inclined surfaces forms an axial limit, preventing the waveguide rod 22 from coming out. The radial engagement of the connecting protrusion 533 and the connecting slot 534 forms a circumferential limit, preventing the waveguide rod 22 from rotating. During disassembly, simply pull the waveguide rod 22 axially, and the external force overcomes the elastic force of the bracket to disengage the protrusion from the slot, achieving quick separation. This structure can be disassembled and assembled without additional tools. The deformation characteristics of the elastic connecting bracket 531 can also buffer the high-frequency vibration transmitted by the waveguide rod 22, avoiding component wear caused by rigid connection, and balancing quick disassembly convenience with connection stability.

[0029] Reference Figure 1 , Figure 2 At least one telescopic spring 535 is provided between the elastic connecting bracket 531 and the groove wall of the mounting groove 532. One end of the telescopic spring 535 is fixedly connected to the elastic connecting bracket 531, and the other end abuts against the groove wall of the mounting groove 532, which is used to drive the connecting protrusion 533 to clamp the connecting groove 534.

[0030] In this embodiment, the telescopic spring 535 is positioned corresponding to the core force area of ​​the elastic connecting bracket 531 and is arranged parallel to the elastic connecting bracket 531. After assembly, it is always in a pre-compressed state. Under normal conditions, the pre-tightening force of the telescopic spring 535 continuously applies radial thrust to the elastic connecting bracket 531, driving the connecting protrusion 533 to maintain the tendency to extend towards the center of the locking collar 51.

[0031] When the waveguide rod 22 drives the connecting ring 52 to insert, the connecting protrusion 533 is pressed, causing the elastic connecting bracket 531 to compress the telescopic spring 535 and retract into the mounting groove 532. Once the connecting protrusion 533 is aligned with the connecting slot 534, the elastic restoring force of the telescopic spring 535 immediately pushes the elastic connecting bracket 531 to reset, causing the connecting protrusion 533 to be tightly engaged in the connecting slot 534 and press against the side wall of the slot. The spring tension strengthens the tightness of the engagement between the protrusion and the slot, counteracting the loosening caused by high-frequency vibration. During disassembly, the waveguide is pulled axially. The external force generated by rod 22 needs to overcome the preload of telescopic spring 535, forcing the elastic connecting bracket 531 to compress the spring and retract into the mounting groove 532, so that the connecting protrusion 533 can disengage from the slot. The linear and uniform distribution design of telescopic spring 535 ensures that the elastic connecting bracket 531 is subjected to balanced force, avoiding jamming caused by unilateral offset. It forms a dual elastic drive structure with the elastic deformation of the elastic connecting bracket 531 itself, which not only improves the locking reliability and vibration resistance of the connection, but also ensures the smoothness of the disassembly and assembly process, and is suitable for complex vibration conditions in the well.

[0032] Working principle: The component is sealed to the standard oil pipe through the threaded grooves 12 of the connecting pipes 11 at both ends of the outer sleeve 1. The waveguide bracket 21 is positioned by being embedded in the first receiving groove 13. The positioning boss 41 is fitted into the positioning slot 42 with an elastic anti-slip washer to achieve circumferential axial fixation. The waveguide rod 22 is securely mounted in the mounting hole 211 by the locking component 5. The end is fitted with the first slot 14 and filled with high-temperature sound-conducting adhesive and expanded graphite sealant to ensure a tight fit with the outer wall of the oil pipe and to isolate impurities.

[0033] The electrical control cable connects the ground control console to the piezoelectric transducer resonance module 3. The module receives commands and outputs reverse vibrations that match the natural frequency of the oil pipe. These vibrations are efficiently transmitted to the oil pipe via the waveguide rod 22 to counteract the resonance. The telescopic spring 535 and the elastic connecting bracket 531 form a dual elastic drive to ensure connection stability under high-frequency vibration. Each detachable structure can be quickly disassembled and maintained without additional tools. The whole system achieves the synergistic functions of resonance weakening, sealing protection, and convenient maintenance.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A detachable resonance-weakening oil pipe joint assembly, comprising: The outer sleeve (1), waveguide assembly (2), resonant module (3), and electrical control cable are characterized in that, The outer sleeve (1) is fixedly connected to both ends of a connecting pipe (11), and the connecting pipe (11) is provided with a threaded groove (12) that is compatible with a standard oil pipe. The waveguide assembly (2) is detachably mounted on the inner wall of the outer sleeve (1), including a waveguide bracket (21) and at least three waveguide rods (22) evenly arrayed along the circumference of the waveguide bracket (21). The waveguide bracket (21) is a ring structure and is detachably fixed to the inner wall of the outer sleeve (1). The waveguide rods (22) are detachably connected to the waveguide bracket (21), and the end of the waveguide rod (22) away from the resonant module (3) is attached to the outer wall of the oil pipe. The resonance module (3) is mechanically connected to the waveguide rod (22) through the waveguide bracket (21). The resonance module (3) is a piezoelectric transducer whose output vibration frequency matches the natural frequency of the oil pipe. It is used to transmit reverse vibration to the oil pipe through the waveguide rod (22) to weaken the resonance of the oil pipe. One end of the electrical control cable passes through the sealed protective structure of the outer sleeve (1) and is electrically connected to the resonance module (3), while the other end is used to connect to the ground control console.

2. The detachable resonance weakening oil pipe joint assembly according to claim 1, characterized in that: The inner wall of the outer sleeve (1) is provided with an annular first receiving groove (13), and the waveguide bracket (21) is adapted to be embedded in the first receiving groove (13) and can be detachably fixed to the outer sleeve (1) by the positioning component (4).

3. The detachable resonance weakening oil pipe joint assembly according to claim 1, characterized in that: The waveguide bracket (21) has at least three mounting holes (211) evenly distributed along the circumference. The waveguide rod (22) is fitted into the mounting holes (211) one by one and fixed by the locking assembly (5). One end of the waveguide rod (22) extends through the center clearance hole of the waveguide bracket (21) to the vibration output end of the resonance module (3).

4. A detachable resonance weakening oil pipe joint assembly according to claim 3, characterized in that: The inner wall of the outer sleeve (1) is provided with a first slot (14) corresponding to the waveguide rod (22). The end of the waveguide rod (22) away from the resonant module (3) is embedded in the first slot (14). The gap between the waveguide rod (22) and the first slot (14) is filled with high-temperature acoustic adhesive and expanded graphite sealant from the inside to the outside. The first slot (14) is used to limit the position of the waveguide rod (22) and ensure the fit between the waveguide rod (22) and the outer wall of the oil pipe.

5. A detachable resonance weakening oil pipe joint assembly according to claim 2, characterized in that: The positioning component (4) includes at least three positioning bosses (41) arranged in a circumferential array along the inner wall of the first accommodating groove (13). The waveguide bracket (21) is provided with positioning slots (42) corresponding to the positioning bosses (41). An elastic anti-slip washer is embedded in the positioning slot (42). An annular anti-slip groove (43) is provided on the side wall of the positioning boss (41). The anti-slip washer is fitted into the anti-slip groove (43).

6. A detachable resonance weakening oil pipe joint assembly according to claim 3, characterized in that: The locking assembly (5) includes a locking collar (51) fixedly embedded in the mounting hole (211), and a connecting ring (52) is fixedly sleeved on the outer wall of the waveguide rod (22). The connecting ring (52) and the locking collar (51) are fixed by a detachable connector (53).

7. A detachable resonance weakening oil pipe joint assembly according to claim 6, characterized in that: The detachable connector (53) includes an elastic connecting bracket (531) installed on the inner wall of the locking collar (51). The inner wall of the locking collar (51) is provided with an annular mounting groove (532). The elastic connecting bracket (531) is arranged in an annular array in the annular mounting groove (532). Connecting protrusions (533) are fixedly installed at both ends of the elastic connecting bracket (531). The connecting protrusions (533) are symmetrically inclined. The outer wall of the connecting ring (52) is provided with a connecting slot (534) that matches the connecting protrusions (533).

8. A detachable resonance weakening oil pipe joint assembly according to claim 7, characterized in that: At least two telescopic springs (535) are provided between the elastic connecting bracket (531) and the groove wall of the mounting groove (532). One end of the telescopic spring (535) is fixedly connected to the elastic connecting bracket (531), and the other end abuts against the groove wall of the mounting groove (532) to drive the connecting protrusion (533) to clamp the connecting groove (534).

Images