Riser tensioning ring with automatic locking function

Abstract

The present invention discloses a watertightening pipe tensioning ring with an automatic locking function, which comprises a tensioning ring male body and a tensioning ring female body that are adapted to each other, two male body docking plates and female body docking plates that are adapted to each other are respectively arranged on both sides of the tensioning ring male body and the tensioning ring female body, a guide pin shaft and a locking pin shaft are arranged on the side wall of the male body docking plate, and a groove is arranged at the rear of the section where the front end of the locking pin shaft is placed; a guide pin hole that is adapted to the guide pin shaft and a locking pin hole that is adapted to the locking pin shaft are arranged on the female body docking plate, a locking arm is arranged horizontally above the locking pin hole, and both ends of the locking arm are respectively hinged to the female body docking plate through the pin shaft, and a long vertical limiting groove is arranged on the side of the locking arm close to the locking pin shaft. The present invention is a pure mechanical mechanism, and the locking and separation of the tensioning ring male body and the tensioning ring female body are realized by locking and separating the locking arm and the locking pin shaft, without requiring close contact of operators, thereby eliminating safety hazards.

Description

Technical Field

[0001] The invention belongs to the technical field of oil drilling equipment, in particular to a watertightening pipe tensioning ring with an automatic locking function. Background Art

[0002] The direct-acting offshore drilling riser tensioning system (DAT) is mainly used for floating offshore drilling platforms (ships). Usually, when drilling is stopped or towing, the tension ring male and female bodies suspended from the lower part of the cylinder are locked with the cylinder at the designated positions on both sides of the moon pool. When the riser tensioning system is required to perform heave compensation on the underwater riser, the tension ring male and female bodies need to be aligned and locked.

[0003] In the prior art, after the male and female parts of the tension ring are aligned under the push of the hydraulic cylinder, manpower is required to approach the equipment closely to insert the pin into the locking pin hole to prevent the male and female parts of the tension ring from separating. The swing amplitude of the tensioning hydraulic cylinder and the tensioning ring will increase under the influence of wind and waves, making the operation more difficult and easily endangering the safety of on-site workers. Summary of the invention

[0004] The object of the present invention is to provide a riser tensioning ring with an automatic locking function, which can automatically and safely lock the riser tensioning ring and avoid close contact between operators when the tensioning ring is centered.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A watertightening pipe tensioning ring with an automatic locking function, which comprises a tensioning ring male body and a tensioning ring female body that match each other, two matching male docking plates and female docking plates are respectively arranged on both sides of the tensioning ring male body and the tensioning ring female body, and a guide pin and a locking pin are arranged on the side walls adjacent to the male docking plate and the female docking plate, the guide pin is located below the locking pin, the front end of the locking pin is an inclined section, and the rear part of the section is provided with a groove; a guide pin hole matched with the guide pin and a locking pin hole matched with the locking pin are arranged on the female docking plate, a locking arm is horizontally arranged above the locking pin hole, and both ends of the locking arm are respectively hinged on the side wall of the female docking plate away from the male docking plate through the pin, and a long vertical limit groove is arranged on the side of the locking arm close to the locking pin.

[0007] Preferably, an inclined arc-shaped limit hole groove is provided in the middle portion of the locking arm, and the locking arm is connected to the middle portion of the lever arm through a pin installed in the arc-shaped limit hole groove. The lever arm is located on the outside of the locking arm, and the lever arm is in an "L" shape bent to one side, with its top adjacent to an indicator dial installed on the upper end of the mother docking plate, and its bottom is hinged to the mother docking plate through a pin, and a hole for applying external force is provided at the top of the lever arm.

[0008] Preferably, a plurality of stop notches are provided on the bottom side wall of the lever arm, the top end of the stop block is stuck in one of the stop notches, and the bottom of the stop block is hinged to the mother docking plate through a pin shaft.

[0009] Preferably, the upper portion of the stop block is movably connected to a spring pin via a pin, and the spring pin is mounted on the mother body docking plate.

[0010] Preferably, the bottom of the stop block is hinged in a horizontal limiting hole on the mother docking plate through a pin, and the horizontal limiting hole is a horizontal long strip hole.

[0011] Preferably, an indicator bar is installed on the upper part of the lever arm, and the top end of the indicator bar is close to the indicator dial.

[0012] The working process of the present invention is:

[0013] When the tension ring male body and the tension ring female body are aligned and locked, the locking pins and guide pins on the male body docking plates on both sides of the tension ring male body are respectively inserted into the locking pin holes and guide pin holes on the female body docking plates on both sides of the tension ring female body. After reaching the appropriate position, the operator uses a tool to push the external force application hole on the upper part of the lever arm to push the lever arm to rotate counterclockwise. The pin connected to the locking arm in the middle of the lever arm pushes the locking arm to rotate counterclockwise. The end of the locking arm close to the locking pin gradually approaches the locking pin and is stuck in the groove at the front end of the locking pin to lock the tension ring male body and the tension ring female body. At the same time, the top of the stop block is stuck in the corresponding stop notch below the side wall of the lever arm as the lever arm rotates, limiting the lever arm to prevent the tension ring male body and the tension ring female body from loosening.

[0014] When the tensioning ring male body is separated and loosened from the tensioning ring mother body, the operator applies reverse force to the external force application hole of the lever arm to push the lever arm to rotate clockwise, and the lever arm drives the locking arm to rotate clockwise, and the locking arm disengages from the groove at the front end of the locking pin shaft, and the locking pin shaft and the guide pin shaft disengage from the locking pin hole and the guide pin hole on the mother body docking plate, and the tensioning ring male body is separated from the tensioning ring mother body.

[0015] The beneficial effects of the present invention are:

[0016] (1) The present invention is a purely mechanical mechanism. The locking and separation of the tensioning ring male body and the tensioning ring female body are achieved through the locking and separation of the locking arm and the locking pin shaft. The design is scientific, reasonable and simple. It does not require close contact between operators, eliminating safety hazards.

[0017] (2) The present invention realizes the locking and separation of the tensioning ring by driving the rotation of the locking arm through the external force applied by the operator to the lever arm. The present invention is safe and reliable, can realize automatic operation, and saves time and effort;

[0018] (3) The present invention provides a stop block to limit the position of the lever arm, ensuring that the tension ring male body and the tension ring female body are not separated after being locked, thereby improving the reliability of the product;

[0019] (4) The present invention is a purely mechanical structure without the layout of hydraulic, electrical and pipelines, which greatly reduces the cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the tensioning ring male body of the present invention;

[0022] Figure 3 It is a schematic diagram of the tension ring matrix of the present invention;

[0023] Figure 4 It is a schematic diagram of the locking arm of the present invention;

[0024] Figure 5 It is a schematic diagram of the lever arm of the present invention;

[0025] Figure 6 It is a schematic diagram of the stop block and spring pin shaft and their assembly of the present invention;

[0026] Figure 7 It is a schematic diagram of the assembly of the indicator bar and the indicator dial of the present invention;

[0027] In the figure: 1. tensioning ring male body, 2. tensioning ring female body, 3. locking arm, 4. lever arm, 5. stop block, 6. indicator bar, 7. indicator dial, 8. male body docking plate, 9. female body docking plate, 10. locking pin hole, 11. guide pin hole, 12. arc limit groove, 13. vertical limit groove, 14. groove, 15. guide pin shaft, 16. locking pin shaft, 17. external force application hole, 18. stop notch, 19. spring pin shaft, 20. horizontal limit hole. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] A watertightening pipe tensioning ring with an automatic locking function, comprising a tensioning ring male body 1 and a tensioning ring female body 2 adapted to each other, two male body docking plates 8 and female body docking plates 9 adapted to each other are respectively arranged on both sides of the tensioning ring male body 1 and the tensioning ring female body 2, a guide pin 15 and a locking pin 16 are arranged on the side walls adjacent to the male body docking plate 8 and the female body docking plate 9, the guide pin 15 is located below the locking pin 16, and the front end of the locking pin 16 is inclined Cut surface, a groove 14 is provided at the rear part of the cut surface; a guide pin hole 11 adapted to the guide pin shaft 15 and a locking pin hole 10 adapted to the locking pin shaft 16 are provided on the parent docking plate 9, and a locking arm 3 is horizontally arranged above the locking pin hole 10, and both ends of the locking arm 3 are respectively hinged on the side wall of the parent docking plate 9 away from the male docking plate 8 through the pin shaft, and a long vertical limit groove 13 is provided on the side of the locking arm 3 close to the locking pin shaft 16.

[0030] An inclined arc-shaped limit hole groove 12 is provided in the middle part of the locking arm 3. The locking arm 3 is connected to the middle part of the lever arm 4 through a pin installed in the arc-shaped limit hole groove 12. The lever arm 4 is located on the outside of the locking arm 3. The lever arm 4 is an "L" shape bent to one side. Its top is adjacent to the indicator dial 7 installed on the upper end of the parent docking plate 9, and its bottom is hinged on the parent docking plate 9 through a pin. The top of the lever arm 4 is provided with a hole 17 for applying external force.

[0031] A plurality of stop notches 18 are provided on the bottom side wall of the lever arm 4. The top end of the stop block 5 is stuck in one of the stop notches 18. The bottom of the stop block 5 is hinged to the mother docking plate 9 through a pin shaft.

[0032] The upper part of the stop block 5 is movably connected to the spring pin 19 through a pin, and the spring pin 19 is installed on the mother docking plate 9.

[0033] The bottom of the stop block 5 is hinged in a horizontal limit hole 20 on the mother docking plate 9 through a pin shaft, and the horizontal limit hole 20 is a horizontal long strip hole.

[0034] An indicating bar block 6 is installed on the upper part of the lever arm 4 , and the top end of the indicating bar block 6 is close to the indicating dial 7 .

[0035] The working process of the present invention is:

[0036] When the tension ring male body 1 and the tension ring female body 2 are aligned and locked, the locking pins 16 and guide pins 15 on the male body docking plates 8 on both sides of the tension ring male body 1 are respectively inserted into the locking pin holes 10 and guide pin holes 11 on the female body docking plates 9 on both sides of the tension ring female body 2. After reaching the appropriate position, the operator uses a tool to push the external force application hole 17 on the upper part of the lever arm 4 to push the lever arm 4 to rotate counterclockwise. The pin connected to the locking arm 3 in the middle of the lever arm 4 pushes the locking arm 3 to rotate counterclockwise. The end of the locking arm 3 close to the locking pin 16 gradually approaches the locking pin 16 and is stuck in the groove 14 at the front end of the locking pin 16, locking the tension ring male body 1 and the tension ring female body 2. At the same time, the top of the stop block 5 is stuck in the corresponding stop notch 18 below the side wall of the lever arm 4 as the lever arm 4 rotates, limiting the lever arm 4 to prevent the tension ring male body 1 and the tension ring female body 2 from loosening.

[0037] When the tensioning ring male body 1 is separated and loosened from the tensioning ring mother body 2, the operator applies reverse force to the external force application hole 17 of the lever arm 4, pushing the lever arm 4 to rotate clockwise, and the lever arm 4 drives the locking arm 3 to rotate clockwise, and the locking arm 3 disengages from the groove 14 at the front end of the locking pin shaft 16, and the locking pin shaft 16 and the guide pin shaft 15 disengage from the locking pin hole 10 and the guide pin hole 11 on the mother body docking plate 9, and the tensioning ring male body 1 is separated from the tensioning ring mother body 2.

[0038] The present invention is a purely mechanical mechanism, which realizes the locking and separation of the tensioning ring male body and the tensioning ring female body through the locking and separation of the locking arm and the locking pin shaft. The design is scientific, reasonable and simple, and does not require close contact by operators, thereby eliminating safety hazards. The present invention drives the rotation of the locking arm through the external force applied to the lever arm by the operator, thereby realizing the locking and separation of the tensioning ring. The present invention is safe and reliable, can realize automatic operation, and saves time and effort.

Claims

1. A riser tensioning ring with an automatic locking function, comprising a tensioning ring male body (1) and a tensioning ring female body (2) adapted to each other, two male body docking plates (8) and female body docking plates (9) adapted to each other being provided on both sides of the tensioning ring male body (1) and the tensioning ring female body (2), characterized in that: A guide pin (15) and a locking pin (16) are provided on the side wall adjacent to the male docking plate (8) and the female docking plate (9); the guide pin (15) is located below the locking pin (16); the front end of the locking pin (16) is an inclined section, and the rear part of the section is provided with a groove (14); the female docking plate (9) is provided with a guide pin hole (11) matched with the guide pin (15), and a locking pin (16) matched with the locking pin (16). A locking pin hole (10) is provided horizontally above the locking pin hole (10), and the two ends of the locking arm (3) are respectively hinged to the side wall of the female docking plate (9) away from the male docking plate (8) through a pin shaft, and a long vertical limit groove (13) is provided on the side of the locking arm (3) close to the locking pin shaft (16); an inclined arc-shaped limit hole groove (12) is provided in the middle of the locking arm (3), and the locking arm (3) is installed on the arc-shaped limit hole groove (12). The pin in the limiting hole groove (12) is connected to the middle part of the lever arm (4). The lever arm (4) is located outside the locking arm (3). The lever arm (4) is in an "L" shape bent to one side. Its top is close to the indicating dial (7) installed on the upper end of the mother docking plate (9). Its bottom is hinged on the mother docking plate (9) through a pin. The top of the lever arm (4) is provided with an external force application hole (17). The bottom side wall of the lever arm (4) is provided with a plurality of stop notches (18). The top of the stop block (5) is stuck in one of the stop notches (18). The bottom of the stop block (5) is hinged on the mother docking plate (9) through a pin. The upper part of the lever arm (4) is provided with an indicating bar (6). The top of the indicating bar (6) is close to the indicating dial (7). The operator applies external force to the lever arm (4), driving the locking arm (3) to rotate counterclockwise or clockwise, thereby realizing the locking and separation of the tensioning ring.

2. The riser tensioning ring with automatic locking function according to claim 1, characterized in that: The upper portion of the stop block (5) is movably connected to a spring pin (19) via a pin, and the spring pin (19) is mounted on the mother body docking plate (9).

3. The riser tensioning ring with automatic locking function according to claim 1, characterized in that: The bottom of the stop block (5) is hinged to a horizontal limit hole (20) on the mother docking plate (9) via a pin, and the horizontal limit hole (20) is a horizontal long strip hole.

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