Internal blowout prevention tool tension-torsion pressure test device and method thereof

Abstract

The invention belongs to the technical field of inner blowout prevention tool performance detection, particularly relates to an inner blowout prevention tool tension-torsion pressure test device and a method thereof, and aims at solving the problem that an existing detection device cannot clean leaked hydraulic oil, and provides the following scheme that the inner blowout prevention tool tension-torsion pressure test device comprises a bottom panel, and four symmetrical stand columns are fixedly connected to the bottom panel; the exteriors of the four stand columns are fixedly connected with the same top plate, the exteriors of the four stand columns are slidably connected with the same middle sliding plate, and a hole opening is formed in the middle sliding plate. According to the internal blowout prevention tool tension-torsion pressure test device and method, hydraulic oil permeation caused by a tension-torsion pressure test on a fixed pipeline can be effectively cleaned, so that the joint of the fixed pipeline and a check valve body can be kept clean, interference factors on check valve body detection are reduced, and the detection accuracy is improved. And the accuracy and the credibility of the detection result of the check valve body are improved.

Description

Technical Field

[0001] This invention relates to the field of performance testing technology for internal blowout preventers, and in particular to a tensile-torsional pressure testing device and method for internal blowout preventers. Background Technology

[0002] Internal blowout preventers mainly refer to a series of tools used to prevent blowouts and other accidents during drilling, mainly including check valve series and plug valve series.

[0003] In technical design and practical application, in order to effectively test the tensile, compressive and torsional properties of a single internal blowout preventer, a testing device that can perform the above functions is needed.

[0004] To make the testing structure more realistic, check valves are often tested under pressure. This method results in a large amount of hydraulic oil used for pressurization leaking from the pipe where the check valve is installed after the test, which affects the sealing performance of subsequent check valves and thus affects the accuracy of the test results. Summary of the Invention

[0005] This invention discloses a tension and torsion pressure testing device and method for internal anti-spray tools, aiming to solve the technical problem that existing testing devices in the background art cannot clean up leaked hydraulic oil.

[0006] This invention proposes an internal blowout preventer tension and torsional pressure testing device, comprising a bottom panel, on which four symmetrical columns are fixedly connected, and the four columns are fixedly connected to the same top plate. The four columns are also slidably connected to the same middle slide plate. An orifice is opened on the middle slide plate, and a torque motor is fixedly connected to the inner wall of the orifice. A pressure rod is fixedly connected to the bottom of the torque motor. A support platform is fixedly connected to the upper side of the bottom panel, and a fixed pipe is provided above the support platform. The fixed pipe and the side opposite to the pressure rod are connected to the same check valve body through a flange, and an oil leakage cleaning module is provided outside the fixed pipe. A pressure monitoring module is provided on the support platform. Two symmetrical hydraulic rods are fixedly connected to the upper side of the bottom panel, and the output ends of the hydraulic rods are fixedly connected to the bottom of the middle slide plate. The oil seepage cleaning module includes a sleeve, the inner wall of which is fixedly connected to the outside of the fixed pipe. An installation ring is slidably connected to the sleeve. Two symmetrical rotating frames are provided on the outside of the sleeve, and a brush and a wiping cotton are respectively provided on the two rotating frames. The pressure monitoring module includes a stabilizing frame, within which a pressure sensor is installed, and the pressure sensor is located below the fixed pipe.

[0007] The device, equipped with a bottom panel, column, top plate, hydraulic rod, middle slide plate, torque motor, support platform, oil seepage cleaning module, pressure monitoring module, lower pressure rod, check valve body, and fixed pipeline, utilizes the oil seepage cleaning module to effectively clean the hydraulic oil seepage caused by the tension and torsion pressure test on the fixed pipeline. This ensures that the connection between the fixed pipeline and the check valve body remains clean, thereby reducing interference factors in the detection of the check valve body and improving the accuracy and reliability of the detection results.

[0008] In a preferred embodiment, a support ring is fixedly connected to the outside of the sleeve, located below the mounting ring. Three circumferentially spaced telescopic rods are fixedly connected to the upper side of the support ring, with the output ends of the telescopic rods fixedly connected to the bottom of the mounting ring. A gear is slidably connected to the outside of the sleeve, with the bottom of gear one movably connected to the upper side of the mounting ring. A motor is fixedly connected to the outside of the mounting ring, with the output end of motor one connected to a gear two via a coupling. Gear two meshes with gear one, and two symmetrical gears are fixedly connected to the upper side of gear one. Each boss has a movably connected round rod, the outer side of which is movably connected to the outer side of a rotating frame on the same side. An annular frame is fixedly connected to the outer side of each boss, and a torsion spring is fixedly connected to the inner wall of each annular frame. The end of the torsion spring away from the annular frame is fixedly connected to the outer side of the round rod on the same side. Contact blocks are fixedly connected to the outer side of each rotating frame, and a stop ring is fixedly connected to the outer side of the sleeve. The bottom of the stop ring contacts the outer side of each of the two contact blocks. Stop plates are fixedly connected to the opposite side of each of the two bosses, with the ends of the stop plates away from the bosses... The two rotating frames are in contact with the outside of the rotating frame on the same side; each rotating frame has a rectangular slot, and a cylindrical tube is movably connected to the inner wall of each rectangular slot. Each cylindrical tube has multiple equally spaced fine holes, and the outside of one cylindrical tube is fixedly connected to the brush, while the outside of the other cylindrical tube is fixedly connected to the inner wall of the wiping cotton. Each cylindrical tube has an opening on the side away from the fixed pipe, and a delivery pipe and a suction pipe are movably connected to the opening respectively. Storage box one and storage box two are fixedly connected to the ends of the delivery pipe and suction pipe away from the cylindrical tube respectively. Storage box one and storage box two are fixedly connected to the opposite side of the rotating frame on the same side. Pump one and pump two are fixedly connected to the upper side of storage box one and storage box two respectively. The output end of pump one is connected to the delivery pipe through a round pipe, and the output end of pump two is connected to the suction pipe through a thin pipe. Motor two is fixedly connected to the outside of the rotating frame on the same side as the brush. The output end of motor two is connected to the end of the cylindrical tube away from the delivery pipe through a coupling. Two symmetrical pressure plates are attached to the outside of the wiping cotton. The two pressure plates are fixedly connected to the outside of the rotating frame on the same side.

[0009] By incorporating an oil seepage cleaning module, the module utilizes contact blocks and stop rings to allow the rotating frame to quickly and conveniently deploy the motor and wiping cotton onto the opening of the fixed pipe. This allows the rotating frame to be used only when needed, reducing the space occupied on the fixed pipe and avoiding interference with experiments. At the same time, the washing and wiping method effectively improves the cleaning efficiency of oil stains on the opening of the fixed pipe.

[0010] In a preferred embodiment, the bottom inner wall of the stabilizing frame has a groove, and a connecting pipe is slidably connected within the groove. The outside of the connecting pipe is in contact with the inner wall of the pressure sensor, and a movable plate is fixedly connected to the outside of the connecting pipe. The outside of the movable plate is slidably connected to the inner wall of the stabilizing frame, and the bottom of the movable plate contacts the upper side of the pressure sensor. The bottom of the pressure sensor is fixedly connected to the bottom inner wall of the stabilizing frame. The inner wall of the connecting pipe is fixedly connected to the inner wall of the fixed pipe, and an annular groove is formed on the outside of the connecting pipe. A sealing gasket is fixedly connected within the annular groove. The upper side of the sealing gasket contacts the bottom of the fixed pipe. The bottom inner wall of the stabilizing frame has multiple circumferentially distributed circular openings, each containing a spring. The end of each spring near the movable plate is fixedly connected to the bottom of the movable plate. Both the stabilizing frame and the connecting pipe have two slots. The same oil supply pipe is fixedly connected to the two slots on the same side. An oil pump is installed outside each of the two oil supply pipes, and the outside of each oil pump is fixedly connected to the upper side of the bottom panel. The output ends of the two oil pumps are connected to the oil supply pipes on the same side via conduits.

[0011] By incorporating a pressure monitoring module, the device can inject pressurized hydraulic oil into a fixed pipeline via a connecting pipe and an oil pump. This allows the device to simulate the actual usage of the check valve body, making the test results more closely resemble reality. By using pressure sensors to monitor tension and pressure, the device can gain a clearer understanding of the deformation of the check valve body under various stress conditions.

[0012] A method for testing the tensile and torsional stress of an internal blowout preventer, using the internal blowout preventer tensile and torsional stress testing device as described above, includes the following steps: Step 1: Before installing the check valve body to be tested onto the fixed pipeline, use the oil leakage cleaning module to clean the hydraulic oil stains from the pipe opening of the fixed pipeline. After cleaning, connect the check valve body to the fixed pipeline and the lower pressure rod. Step 2: Start the oil pump to inject hydraulic oil into the connecting pipe through the oil delivery pipe, thereby filling the fixed pipeline with pressurized hydraulic oil. Start the hydraulic rod to retract or extend the output end of the hydraulic rod, thereby causing the middle slide plate to drive the lower pressure rod to perform pressure or tension detection on the check valve body. Start the torque motor to drive the lower pressure rod to perform torsional detection on the check valve body. Use the pressure monitoring module to record the pressure changes on the lower pressure rod for monitoring.

[0013] As can be seen from the above, the internal anti-blowout tool tension and torsion pressure testing device provided by the present invention can effectively clean the hydraulic oil penetration on the fixed pipeline caused by the tension and torsion pressure test, so that the connection between the fixed pipeline and the check valve body can be kept clean, thereby reducing the interference factors on the test of the check valve body and improving the accuracy and reliability of the test results of the check valve body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the internal blowout preventer tool tension and torsion pressure testing device proposed in this invention; Figure 2 This is a cross-sectional structural schematic diagram of a tension and torsion pressure testing device for an internal blowout preventer proposed in this invention; Figure 3 This is a schematic diagram of the oil leakage cleaning module structure of an internal blowout preventer tool tension and torsion pressure testing device proposed in this invention; Figure 4 This is a schematic diagram of the sleeve structure of an internal blowout preventer tool tension and torsion pressure testing device proposed in this invention; Figure 5 This is a schematic diagram of the rotating frame structure of an internal blowout preventer tool tension and torsion pressure testing device proposed in this invention; Figure 6 This is a schematic diagram of the wiping cotton structure of an internal anti-spray tool tension and torsion pressure testing device proposed in this invention; Figure 7 This is a schematic diagram of the pressure monitoring module structure of an internal blowout preventer tool tension and torsion pressure testing device proposed in this invention.

[0015] In the diagram: 1. Bottom panel; 2. Column; 3. Top plate; 4. Hydraulic rod; 5. Middle sliding plate; 6. Torque motor; 7. Support platform; 8. Oil leakage cleaning module; 801. Sleeve; 802. Support ring; 803. Mounting ring; 804. Telescopic rod; 805. Gear 1; 806. Motor 1; 807. Gear 2; 808. Positioning ring; 809. Boss; 810. Rotating frame; 811. Stop plate; 812. Torsion spring; 813. Contact block; 814. Rectangular groove; 815. Columnar cylinder; 816. Brush; 817. Fine orifice; 818. Storage tank one; 819. Delivery pipe; 820. Pump one; 821. Wiping cotton; 822. Pressure plate; 823. Storage tank two; 824. Suction pipe; 825. Pump two; 826. Motor two; 9. Pressure monitoring module; 901. Stabilizing frame; 902. Connecting pipe; 903. Pressure sensor; 904. Sealing gasket; 905. Movable plate; 906. Spring; 907. Oil delivery pipe; 908. Oil pump; 10. Lowering rod; 11. Check valve body; 12. Fixed pipeline. Detailed Implementation

[0016] 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.

[0017] The internal anti-spray tool tension and torsion pressure testing device disclosed in this invention is mainly used in scenarios where existing testing devices cannot clean up leaked hydraulic oil.

[0018] Reference Figure 1-7 An internal anti-spray tool tension and torsion pressure testing device includes a bottom panel 1, four symmetrical columns 2 are bolted to the bottom panel 1, the same top plate 3 is bolted to the outside of the four columns 2, and the same middle slide plate 5 is slidably connected to the outside of the four columns 2. The middle slide plate 5 has an opening, and a torque motor 6 is bolted to the inner wall of the opening. A lower pressure rod 10 is bolted to the bottom of the torque motor 6. A support platform 7 is bolted to the upper side of the bottom panel 1. A fixed pipe 12 is set above the support platform 7. The same check valve body 11 is connected to the opposite side of the fixed pipe 12 and the lower pressure rod 10 through a flange. An oil leakage cleaning module 8 is set outside the fixed pipe 12. A pressure monitoring module 9 is set on the support platform 7. Two symmetrical hydraulic rods 4 are bolted to the upper side of the bottom panel 1. The output ends of the hydraulic rods 4 are bolted to the bottom of the middle slide plate 5. The oil seepage cleaning module 8 includes a sleeve 801. The inner wall of the sleeve 801 is connected to the outside of the fixed pipe 12 by bolts. An installation ring 803 is slidably connected on the sleeve 801. Two symmetrical rotating frames 810 are provided on the outside of the sleeve 801, and a brush 816 and a wiping cotton 821 are respectively provided on the two rotating frames 810. The pressure monitoring module 9 includes a stabilizing frame 901, in which a pressure sensor 903 is installed, and the pressure sensor 903 is located below the fixed pipe 12.

[0019] Specifically, before installing the check valve body 11 to be tested onto the fixed pipeline 12, the oil leakage cleaning module 8 is used to clean the hydraulic oil stains from the pipe opening of the fixed pipeline 12. After cleaning, the check valve body 11 is connected to the fixed pipeline 12 and the lowering rod 10. The oil pump 908 is started, causing the oil pump 908 to inject hydraulic oil into the connecting pipe 902 through the oil delivery pipe 907, thereby filling the fixed pipeline 12 with pressurized hydraulic oil. The hydraulic rod 4 is then started, causing the output end of the hydraulic rod 4 to retract or extend, thereby causing the middle sliding plate 5 to drive the lowering rod 10 to press against the check valve body 11. For pressure or tension testing, the torque motor 6 is activated, causing the lower pressure rod 10 to perform a torsional test on the check valve body 11. The pressure monitoring module 9 is used to record the pressure changes on the lower pressure rod 10 for monitoring. The device utilizes the oil seepage cleaning module 8 to effectively clean the hydraulic oil seepage on the fixed pipeline 12 caused by the tension and torsion pressure test, thereby keeping the connection between the fixed pipeline 12 and the check valve body 11 clean. This reduces interference factors in the testing of the check valve body 11 and improves the accuracy and reliability of the test results.

[0020] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6In a preferred embodiment, a support ring 802 is bolted to the outside of the sleeve 801. The support ring 802 is located below the mounting ring 803. Three circumferentially distributed telescopic rods 804 are bolted to the upper side of the support ring 802. The output ends of the telescopic rods 804 are bolted to the bottom of the mounting ring 803. A gear 805 is slidably connected to the outside of the sleeve 801. The bottom of the gear 805 is rotatably connected to the upper side of the mounting ring 803 via a bearing. A motor 806 is bolted to the outside of the mounting ring 803. The output end of the motor 806 is connected to a gear 807 via a coupling. The gear 807 meshes with the gear 805. Two symmetrical gears are bolted to the upper side of the gear 805. The two bosses 809 each have a round rod rotatably connected to them via bearings. The outer side of each round rod is rotatably connected to the outer side of a rotating frame 810 on the same side via bearings. Annular frames are bolted to the outer sides of both bosses 809. Torsion springs 812 are bolted to the inner walls of each annular frame. The ends of the torsion springs 812 away from the annular frames are bolted to the outer sides of the round rods on the same side. Contact blocks 813 are bolted to the outer sides of both rotating frames 810. A stop ring 808 is bolted to the outer side of the sleeve 801. The bottom of the stop ring 808 contacts the outer sides of both contact blocks 813. Stop plates 811 are bolted to the opposite sides of both bosses 809. The ends of both stop plates 811 away from the bosses 809 are bolted to the outer sides of the rotating frames 810. The external contact of the rotating frame 810 on the same side; both rotating frames 810 are provided with rectangular slots 814, and the inner walls of the rectangular slots 814 are rotatably connected to cylindrical tubes 815 via bearings. Both cylindrical tubes 815 are provided with multiple equally spaced fine holes 817, and the exterior of one cylindrical tube 815 is bolted to the brush 816, while the exterior of the other cylindrical tube 815 is bolted to the inner wall of the wiping cotton 821; slots are provided on the side of both cylindrical tubes 815 away from the fixed pipe 12, and conveying pipes 819 and suction pipes 824 are rotatably connected to these slots via bearings. Storage tank 1 818 and storage tank 2 823 are bolted to the ends of the conveying pipes 819 and suction pipes 824 away from the cylindrical tubes 815, respectively. Storage box 1 818 and storage box 2 823 are bolted to the side opposite to the rotating frame 810 on the same side. Pump 1 820 and pump 2 825 are bolted to the upper side of storage box 1 818 and storage box 2 823 respectively. The output end of pump 1 820 is connected to the delivery pipe 819 through a round pipe, and the output end of pump 2 825 is connected to the suction pipe 824 through a thin pipe. Motor 2 826 is bolted to the outside of the rotating frame 810 on the same side as brush 816. The output end of motor 2 826 is connected to the end of cylindrical cylinder 815 away from delivery pipe 819 through a coupling. Two symmetrical pressure plates 822 are attached to the outside of wiping cotton 821. Both pressure plates 822 are bolted to the outside of the rotating frame 810 on the same side.

[0021] Specifically, because the testing of tension, pressure, and torque will cause deformation of the check valve body 11, the hydraulic oil in the fixed pipe 12 will leak from the interface connecting the fixed pipe 12 and the check valve body 11. After the check valve body 11 is removed, the telescopic rod 804 is activated. The output end of the telescopic rod 804 raises the mounting ring 803, thereby causing the contact block 813 on the rotating frame 810 to contact the stop ring 808. As the rotating frame 810 rises, it eventually fully contacts the stop ring 808. At this time, the part of the rotating frame 810 with the cylindrical tube 815 will be in contact with the opening of the fixed pipe 12. The motor 806 is then activated, and the motor 806 drives the gear 807 to mesh with the gear. Gear 1 805 rotates, causing two rotating frames 810 to rotate around the fixed pipe 12. Motor 2 826 is started, driving the cylindrical cylinder 815 equipped with brush 816 to rotate. Pump 1 820 is started, and pump 1 820 delivers cleaning agent from storage tank 1 818 through delivery pipe 819 and sprays it out from fine hole 817, allowing brush 816 to clean the oil stains. Wiping cotton 821 on the other rotating frame 810 wipes the opening of the fixed pipe 12 as it rotates. Pump 2 825 is started, and pump 2 825 draws the mixture of cleaning agent and oil stains through fine hole 817 and delivers it into storage tank 2 823 through suction pipe 824.

[0022] In specific application scenarios, the oil seepage cleaning module 8 is mainly suitable for the oil seepage cleaning stage in the oil seepage cleaning process. That is, the oil seepage cleaning module 8 uses the contact block 813 and the stop ring 808 to enable the rotating frame 810 to quickly and conveniently deploy the motor 826 and the wiping cotton 821 on the pipe opening of the fixed pipe 12. This allows the rotating frame 810 to be used only when needed, reducing the space occupied on the fixed pipe 12 and avoiding interference with the experiment. At the same time, the washing and wiping measures effectively improve the cleaning efficiency of oil stains on the pipe opening of the fixed pipe 12.

[0023] Reference Figure 7In a preferred embodiment, a groove is formed on the inner bottom wall of the stabilizing frame 901, and a connecting pipe 902 is slidably connected within the groove. The outer side of the connecting pipe 902 is in contact with the inner wall of the pressure sensor 903, and a movable plate 905 is bolted to the outer side of the connecting pipe 902. The outer side of the movable plate 905 is slidably connected to the inner wall of the stabilizing frame 901, and the bottom of the movable plate 905 contacts the upper side of the pressure sensor 903. The bottom of the pressure sensor 903 is bolted to the inner bottom wall of the stabilizing frame 901. The inner wall of the connecting pipe 902 is fixedly connected to the inner wall of the fixed pipe 12, and an annular groove is formed on the outer side of the connecting pipe 902. A sealing gasket 90 is bolted into the annular groove. 4. The upper side of the sealing gasket 904 contacts the bottom of the fixed pipe 12. The bottom inner wall of the stabilizing frame 901 has multiple circumferentially distributed circular openings. Springs 906 are bolted into each circular opening. The end of the springs 906 near the movable plate 905 is bolted to the bottom of the movable plate 905. The stabilizing frame 901 and the connecting pipe 902 each have two slots. The same oil pipe 907 is bolted into the two slots on the same side. Oil pumps 908 are installed on the outside of the two oil pipes 907. The outside of the oil pumps 908 is bolted to the upper side of the bottom panel 1. The output ends of the two oil pumps 908 are connected to the oil pipes 907 on the same side through conduits.

[0024] Specifically, the fixed pipe 12 is aligned with the connecting pipe 902 and inserted, so that the bottom of the connecting pipe 902 can fit against the sealing gasket 904. Under the influence of the gravity of the fixed pipe 12, the movable plate 905 overcomes the elastic force of the spring 906 and drives the connecting pipe 902 to descend, so that the movable plate 905 fits against the pressure sensor 903. After the check valve body 11 is connected to the fixed pipe 12 and the lowering rod 10, the oil pump 908 is started. The oil pump 908 pumps hydraulic oil into the fixed pipe 12 through the oil delivery pipe 907. When the hydraulic rod 4 and the torque motor 6 are started to perform pressure, tension and torque tests on the check valve body 11, or two of them simultaneously, the pressure sensor 903 will detect the pressure and tension applied to the check valve body 11 by the lowering rod 10, so that the pressure or tension can be recorded in time when the check valve body 11 is deformed.

[0025] In specific application scenarios, the pressure monitoring module 9 is mainly used for the pressure monitoring link in the pressure monitoring process. That is, the pressure monitoring module 9 uses the connecting pipe 902 and the oil pump 908 to inject pressurized hydraulic oil into the fixed pipeline 12, so that the device can simulate the actual use of the check valve body 11, making the test results of the check valve body 11 closer to the actual situation. By using the pressure sensor 903 to monitor the tension and pressure, the device can have a clearer judgment on the deformation of the check valve body 11 under various stress conditions.

[0026] A method for testing the tensile and torsional stress of an internal blowout preventer, using the internal blowout preventer tensile and torsional stress testing device as described above, includes the following steps: Step 1: Before installing the check valve body 11 to be tested onto the fixed pipeline 12, use the oil leakage cleaning module 8 to clean the hydraulic oil stains from the pipe opening of the fixed pipeline 12. After cleaning, connect the check valve body 11 to the fixed pipeline 12 and the lowering rod 10. (After removing the check valve body 11, start the telescopic rod 804. The output end of the telescopic rod 804 will lift the mounting ring 803, thereby causing the contact block 813 on the rotating frame 810 to contact the stop ring 808. As the rotating frame 810 rises, it will eventually fully fit with the stop ring 808. At this time, the part of the rotating frame 810 with the columnar cylinder 815 will fit with the pipe opening of the fixed pipeline 12. Start the motor 806. The motor 806 drives...) Gear 805, which meshes with gear 807, rotates, causing two rotating frames 810 to rotate around the fixed pipe 12. Motor 826 is started, driving the cylindrical cylinder 815, which is equipped with brush 816, to rotate. Pump 820 is started, and pump 820 delivers cleaning agent from storage tank 818 through delivery pipe 819 and sprays it out from fine hole 817, allowing brush 816 to clean the oil stains. Wiping cotton 821 on the other rotating frame 810 wipes the opening of the fixed pipe 12 as it rotates. Pump 825 is started, and pump 825 draws the mixture of cleaning agent and oil stains through fine hole 817 and delivers it into storage tank 823 through suction pipe 824. Step 2: Start the oil pump 908, which injects hydraulic oil into the connecting pipe 902 through the oil delivery pipe 907, thereby filling the fixed pipe 12 with pressurized hydraulic oil. Start the hydraulic rod 4, causing its output end to retract or extend, which in turn causes the middle slide plate 5 to drive the lower pressure rod 10 to perform pressure or tension detection on the check valve body 11. Start the torque motor 6, which drives the lower pressure rod 10 to perform torsional detection on the check valve body 11. Use the pressure monitoring module 9 to record the pressure changes on the lower pressure rod 10 for monitoring (align the fixed pipe 12 with the connecting pipe 902 and insert it so that the bottom of the connecting pipe 902 can fit against the sealing gasket 904, subject to the pressure changes of the fixed pipe 12). Due to the influence of gravity, the movable plate 905 overcomes the elastic force of the spring 906 and drives the connecting pipe 902 to descend, so that the movable plate 905 is in contact with the pressure sensor 903. After connecting the check valve body 11 to the fixed pipe 12 and the lowering rod 10, the oil pump 908 is started. The oil pump 908 pumps hydraulic oil into the fixed pipe 12 through the oil delivery pipe 907. When the hydraulic rod 4 and the torque motor 6 are started to perform pressure, tension and torque tests on the check valve body 11, or two of them simultaneously, the pressure sensor 903 will detect the pressure and tension applied by the lowering rod 10 to the check valve body 11, so that the pressure or tension can be recorded in time when the check valve body 11 is deformed.

[0027] 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 test device for tensile and torsional pressure of internal blowout preventers, comprising a bottom panel (1), characterized in that, Four symmetrical columns (2) are fixedly connected to the bottom panel (1). The same top plate (3) is fixedly connected to the outside of the four columns (2). The same middle slide plate (5) is slidably connected to the outside of the four columns (2). An orifice is opened on the middle slide plate (5). A torque motor (6) is fixedly connected to the inner wall of the orifice. A pressure rod (10) is fixedly connected to the bottom of the torque motor (6). A support platform (7) is fixedly connected to the upper side of the bottom panel (1). A fixed pipe (12) is set above the support platform (7). The same check valve body (11) is connected to the opposite side of the fixed pipe (12) and the pressure rod (10) through a flange. An oil leakage cleaning module (8) is set outside the fixed pipe (12). A pressure monitoring module (9) is set on the support platform (7). Two symmetrical hydraulic rods (4) are fixedly connected to the upper side of the bottom panel (1). The output ends of the hydraulic rods (4) are fixedly connected to the bottom of the middle slide plate (5). The oil seepage cleaning module (8) includes a sleeve (801), the inner wall of the sleeve (801) is fixedly connected to the outside of the fixed pipe (12), an installation ring (803) is slidably connected on the sleeve (801), and two symmetrical rotating frames (810) are provided on the outside of the sleeve (801), and a brush (816) and a wiping cotton (821) are respectively provided on the two rotating frames (810). The pressure monitoring module (9) includes a stabilizing frame (901), in which a pressure sensor (903) is installed, and the pressure sensor (903) is located below the fixed pipe (12).

2. The internal blowout preventer tool tension and torsion pressure testing device according to claim 1, characterized in that, The sleeve (801) is fixedly connected to a support ring (802), which is located below the mounting ring (803). Three circumferentially distributed telescopic rods (804) are fixedly connected to the upper side of the support ring (802). The output ends of the telescopic rods (804) are fixedly connected to the bottom of the mounting ring (803). A gear (805) is slidably connected to the outside of the sleeve (801), and the bottom of the gear (805) is movably connected to the upper side of the mounting ring (803).

3. The internal anti-spray tool tension and torsion pressure testing device according to claim 2, characterized in that, The mounting ring (803) is externally fixedly connected to a motor (806). The output end of the motor (806) is connected to a gear (807) via a coupling. The gear (807) meshes with the gear (805). The upper side of the gear (805) is fixedly connected to two symmetrical bosses (809). A round rod is movably connected to each boss (809). The outside of the round rod is movably connected to the outside of the rotating frame (810) on the same side.

4. The internal blowout preventer tool tension and torsion pressure testing device according to claim 3, characterized in that, Both of the bosses (809) are fixedly connected to annular frames, and torsion springs (812) are fixedly connected to the inner walls of the annular frames. The ends of the torsion springs (812) away from the annular frames are fixedly connected to the outside of the round rods on the same side. Both rotating frames (810) are fixedly connected to contact blocks (813). The sleeve (801) is fixedly connected to a stop ring (808). The bottom of the stop ring (808) is in contact with the outside of the two contact blocks (813). Both of the bosses (809) are fixedly connected to a stop plate (811) on opposite sides. The ends of the two stop plates (811) away from the bosses (809) are in contact with the outside of the rotating frames (810) on the same side.

5. The internal blowout preventer tool tension and torsion pressure testing device according to claim 4, characterized in that, Both of the rotating frames (810) are provided with rectangular grooves (814), and the inner walls of the rectangular grooves (814) are movably connected with columnar tubes (815). Both columnar tubes (815) are provided with multiple equally spaced fine holes (817). The outside of one columnar tube (815) is fixedly connected to a brush (816), and the outside of the other columnar tube (815) is fixedly connected to the inner wall of a wiping cotton (821).

6. The internal blowout preventer tool tension and torsion pressure testing device according to claim 5, characterized in that, Both cylindrical tubes (815) have slots on the side away from the fixed pipe (12). A conveying pipe (819) and a suction pipe (824) are movably connected in the slots. Storage tank 1 (818) and storage tank 2 (823) are fixedly connected to the end of the conveying pipe (819) and suction pipe (824) away from the cylindrical tube (815), respectively. Storage tank 1 (818) and storage tank 2 (823) are fixedly connected to the side opposite to the rotating frame (810) on the same side. Pump 1 (820) and pump 2 (825) are fixedly connected to the upper side of storage tank 1 (818) and storage tank 2 (823), respectively. The output end of pump 1 (820) is connected to the conveying pipe (819) through a round pipe, and the output end of pump 2 (825) is connected to the suction pipe (824) through a thin pipe.

7. The internal blowout preventer tool tension and torsion pressure testing device according to claim 6, characterized in that, A second motor (826) is fixedly connected to the outside of the rotating frame (810) on the same side as the brush (816). The output end of the second motor (826) is connected to the end of the cylindrical tube (815) away from the conveying pipe (819) through a coupling. Two symmetrical pressure plates (822) are attached to the outside of the wiping cotton (821). Both pressure plates (822) are fixedly connected to the outside of the rotating frame (810) on the same side.

8. The internal blowout preventer tool tension and torsion pressure testing device according to claim 7, characterized in that, The bottom inner wall of the stabilizing frame (901) has a groove, and a connecting tube (902) is slidably connected in the groove. The outside of the connecting tube (902) is in contact with the inner wall of the pressure sensor (903), and a movable plate (905) is fixedly connected to the outside of the connecting tube (902). The outside of the movable plate (905) is slidably connected to the inner wall of the stabilizing frame (901), and the bottom of the movable plate (905) is in contact with the upper side of the pressure sensor (903). The bottom of the pressure sensor (903) is fixedly connected to the bottom inner wall of the stabilizing frame (901).

9. The internal blowout preventer tool tension and torsion pressure testing device according to claim 8, characterized in that, The inner wall of the connecting pipe (902) is fixedly connected to the inner wall of the fixed pipe (12). An annular groove is provided on the outside of the connecting pipe (902), and a sealing gasket (904) is fixedly connected in the annular groove. The upper side of the sealing gasket (904) contacts the bottom of the fixed pipe (12). The bottom inner wall of the stabilizing frame (901) is provided with multiple circumferentially distributed circular openings, and a spring (906) is fixedly connected in each circular opening. The spring (906) is located at one end near the movable plate (905). Both are fixedly connected to the bottom of the movable plate (905), and two slots are opened on the stabilizing frame (901) and the connecting pipe (902). The same oil pipe (907) is fixedly connected in the two slots on the same side. Oil pumps (908) are installed on the outside of the two oil pipes (907). The outside of the oil pumps (908) is fixedly connected to the upper side of the bottom panel (1). The output end of the two oil pumps (908) is connected to the oil pipe (907) on the same side through a conduit.

10. A method for testing the tensile and torsional pressure of an internal blowout preventer, using the tensile and torsional pressure testing device for an internal blowout preventer as described in claim 9, characterized in that... Includes the following steps: Step 1: Before installing the check valve body (11) to be tested onto the fixed pipe (12), use the oil seepage cleaning module (8) to clean the hydraulic oil stains from the pipe opening of the fixed pipe (12). After cleaning, connect the check valve body (11) to the fixed pipe (12) and the lower rod (10). Step 2: Start the oil pump (908) to inject hydraulic oil into the connecting pipe (902) through the oil delivery pipe (907), thereby filling the fixed pipe (12) with pressurized hydraulic oil. Start the hydraulic rod (4) to retract or extend the output end of the hydraulic rod (4), thereby causing the middle slide plate (5) to drive the lower pressure rod (10) to perform pressure or tension detection on the check valve body (11). Start the torque motor (6) to drive the lower pressure rod (10) to perform torsion detection on the check valve body (11). Use the pressure monitoring module (9) to record the pressure change on the lower pressure rod (10) for monitoring.

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