一种管内防喷阀
By designing an internal blowout preventer valve, adopting a flap valve structure and a dual sealing system, the problems of small inner diameter and single-use in existing technologies have been solved, achieving efficient and reliable sealing for large-volume construction and multiple repeated operations, thus shortening the construction cycle.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUXIN CITY GASOLINEEUM TOOL FACTORY
- Filing Date
- 2025-11-06
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the internal diameter of the blowout preventer is small, which cannot meet the requirements of large-volume construction, and most of them are for single use, resulting in low construction efficiency and long cycle.
An in-pipe blowout preventer valve was designed, which adopts a flap valve structure and automatically closes under the action of a torsion spring. It combines a dual dynamic sealing system of end seal and T-shaped seal, has the function of multiple repeated operations, and achieves automatic opening and closing through hydraulic drive.
It maximizes the inner diameter for large-volume construction, ensures reliable sealing, high anti-spray pressure, high construction efficiency, shortens the construction cycle, and has multiple functions and safety redundancy.
Smart Images
Figure CN224515160U_ABST
Abstract
Claims
1. A tubing head valve, comprising: The assembly includes an upper connector (1), a connecting sleeve (8), an upper sealing sleeve (9), a sealing tube (11), a return spring (10), a locking sleeve (5), a wear-resistant sleeve (7), a valve cover assembly (17), an outer cover (18), a lower sealing sleeve (12), and a lower connector (13). The lower end of the upper connector (1) is connected to the upper end of the connecting sleeve (8). The upper sealing sleeve (9) is fitted and suspended on the inner side of the connecting sleeve (8). The lower end of the upper sealing sleeve (9) is connected to the upper end of the wear-resistant sleeve (7). The wear-resistant sleeve (7) is slidably fitted in the inner hole of the upper connector (1). The lower end of the upper sealing sleeve (9) is connected to the upper end of the sealing tube (11). 1) The outer side is fitted with the return spring (10); the lower end of the connecting sleeve (8) is connected to the upper end of the outer cover (18), the lower end of the outer cover (18) is connected to the upper end of the lower sealing sleeve (12), and the lower end of the lower sealing sleeve (12) is connected to the upper end of the lower connector (13); the valve seat (15) is located at the connection between the lower sealing sleeve (12) and the lower connector (13), and the valve cover assembly (17) is installed in the eccentric groove of the valve seat (15); the inner hole step of the upper connector (1) is blocked by the hanging cap (2), and the hanging cap (2) is fixedly connected to the locking sleeve (5) which is slidably located in the upper connector (1) by the shear pin (3).
2. A tubing head valve according to claim 1, wherein, The upper connector (1) is also provided with a locking ring (6) in the inner hole. The locking ring (6) is located in the annular groove of the inner wall of the upper connector (1) and is located between the upper connector (1) and the locking sleeve (5).
3. An in-line blowout preventer valve according to claim 1, wherein, The valve cover assembly (17) includes a valve cover (171), a torsion spring (172), and a fixing pin (173). The valve cover (171) is hinged to the eccentric groove of the valve seat (15) by the fixing pin (173). The torsion spring (172) is sleeved on the fixing pin (173), and its two ends act on the valve seat (15) and the valve cover (171) respectively, so that the valve cover (171) has a sealing tendency to flip upward and fit against the lower end face of the lower sealing sleeve (12).
4. A tubing head valve according to claim 3, wherein, The valve cover (171) can rotate around the fixing pin (173) at an angle ranging from 80° to 120°.
5. An in-line blowout preventer valve according to claim 3, wherein, The lower end face of the lower sealing sleeve (12) is provided with an end seal (14), and a T-shaped seal (16) is installed in the inner hole of the lower connector (13).
6. A tubing head valve according to claim 5, wherein, When the valve cover (171) is rotated outward to the maximum angle, its inner hole channel is aligned with the inner hole of the sealing tube (11) and the lower connector (13), and the sealing tube (11) is dynamically sealed by the end seal (14) located on the end face of the lower sealing sleeve (12) and the T-shaped seal (16) in the inner hole of the lower connector (13).
7. An in-line blowout preventer valve according to claim 1, wherein, The inner surfaces of the wear-resistant sleeve (7), the upper sealing sleeve (9), and the sealing tube (11) are all treated with wear resistance, and the inner surface roughness is less than 1.
6.
8. An in-line blowout preventer valve according to claim 1, wherein, The reset spring (10) is composed of one or more groups of springs, which are installed in the annular cavity formed by the sealing tube (11) and the outer cover (18).
9. An in-line blowout preventer valve as defined in claim 1, wherein, Two ends of the reset spring (10) respectively abut against the lower end surface of the connecting sleeve (8) and the upper end surface of the lower sealing sleeve (12).