Helical Detacher

Category:

Spiral Detacher

Keywords:

Helical Detacher

The upper and lower bodies come into contact, and the head of the central rod—equipped with a rail—enters the rail sleeve on the upper body. At this point, the head of the central rod is guided into the rail tube, where it triggers the downward compression of the spring as the upper and lower bodies begin to rotate relative to each other. Simultaneously, the upward movement of the sliding sleeve causes the rail key to engage fully with the corresponding rail groove, generating torque. As a result, the central rod rotates 90 degrees relative to the upper joint, ensuring that the rail key and groove achieve complete interlocking, thus completing the docking process. When disengagement is required, the operator lifts the sucker rod, causing the脱接器 (disconnect device) to move upward until it releases the joint. As the sliding sleeve’s rail key disengages from the lower body’s rail groove, the upper and lower bodies rotate 90 degrees relative to each other once again. Finally, under the guidance of the rail tube, the head of the central rod moves upward and exits the system, completing the disconnection process.

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How it works
The upper and lower bodies come into contact, and the head of the central rod—equipped with a rail—enters the rail sleeve on the upper body. At this point, the head of the central rod is guided into the rail tube, initiating a downward compressive motion of the spring as the upper and lower bodies rotate relative to each other. Simultaneously, the upward movement of the sliding sleeve causes the rail key to engage fully with the corresponding rail groove, generating torque. As a result, the central rod and the upper connector rotate by 90 degrees, ensuring complete alignment between the rail key and groove, thus completing the docking process. When disengagement is required, lifting the tubing string causes the脱接器 (disconnect device) to move upward until it releases the connector. As the sliding sleeve’s rail key disengages from the lower body’s rail groove, the upper and lower bodies rotate relative to each other by another 90 degrees. Finally, the head of the central rod is guided upward out of the rail tube under the influence of the rail system, completing the disconnection process.

1. Overall length: 600–700 mm (depending on configuration);
2. Upper outer diameter: Φ63.5mm (for Φ95 and Φ83 pumps), Φ57.5mm (for Φ70 pump);
3. Lower body outer diameter: Φ80mm (for Φ95 and Φ83 pumps), Φ64mm (for Φ70 pump);
4. Upper and lower body connection threaded joint CYG25.22 sucker rod connection threaded joint, suitable for pump diameters of Φ70, Φ83, and Φ95;
5. Release connector inner diameter: Φ64–76 (pumps Φ95, Φ83), Φ58–62 (pump Φ70);
6. Tensile Force F (kN): 5 ≤ F ≤ 8;
7. Fatigue Strength (cycles): 7 x 10⁷.

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