A tensile, torsional and compressive pressure testing device for an internal blowout preventer and method thereof

Abstract

The application belongs to the technical field of internal blowout preventer performance detection, and particularly relates to a tensile-torsional pressure test device for internal blowout preventer and a method thereof. In view of the problem that the existing detection device cannot clean the seeped hydraulic oil, the following scheme is proposed, which comprises a bottom panel, four symmetrical stand columns are fixedly connected to the bottom panel, the same top plate is fixedly connected to the outside of the four stand columns, the same middle sliding plate is slidingly connected to the outside of the four stand columns, and a hole is formed in the middle sliding plate. The tensile-torsional pressure test device for internal blowout preventer and the method thereof can effectively clean the seeped hydraulic oil caused by the tensile-torsional pressure test on the fixed pipeline, so that the connection between the fixed pipeline and the check valve body can be kept clean, thereby reducing the interference factors of the check valve body detection and improving the accuracy and reliability of the detection result of the check valve body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of internal blowout preventer performance detection, and particularly relates to a tension-torsion-pressure test device for internal blowout preventer and a method thereof. BACKGROUND

[0002] The internal blowout preventer mainly refers to a series of tools used to prevent blowout accidents in the drilling process, mainly including a check valve series and a plug valve series.

[0003] In the technical design and actual application, in order to effectively detect the tension, pressure and torsion resistance of the internal blowout preventer single entity, a test device for realizing the above functions is needed.

[0004] In order to make the detection structure more close to the reality, the check valve is often detected under pressure, which will cause a large amount of hydraulic oil used for pressurization to seep out of the pipe mouth where the check valve is installed after the detection is completed, thereby affecting the sealing performance of the subsequent check valve to be detected, and the accuracy of the detection result is affected. SUMMARY

[0005] The present application discloses a tension-torsion-pressure test device for internal blowout preventer and a method thereof, which aims to solve the technical problem that the existing detection device in the background art cannot clean the seeped hydraulic oil.

[0006] The tension-torsion-pressure test device for internal blowout preventer comprises a bottom panel, four symmetrical stand columns are fixedly connected to the bottom panel, the same top plate is fixedly connected to the outside of the four stand columns, the same middle sliding plate is slidingly connected to the outside of the four stand columns, a hole is formed in the middle sliding plate, a torque motor is fixedly connected to the inner wall of the hole, a lower pressing rod is fixedly connected to the bottom of the torque motor, a bearing platform is fixedly connected to the upper side of the bottom panel, a fixed pipe is arranged above the bearing platform, the same check valve body is connected to the side opposite to the lower pressing rod of the fixed pipe through a flange, an oil seepage cleaning module is arranged on the outside of the fixed pipe, a pressure monitoring module is arranged on the bearing 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 sliding plate.

[0007] The oil seepage cleaning module comprises a sleeve, the inner wall of the sleeve is fixedly connected to the outside of the fixed pipe, an installation ring is slidingly connected to the sleeve, two symmetrical rotating frames are arranged on the outside of the sleeve, and a brush and a wiping cotton are arranged on the two rotating frames, respectively.

[0008] The pressure monitoring module comprises a stabilizing frame, a pressure sensor is arranged in the stabilizing frame, and the pressure sensor is located below the fixed pipe.

[0009] By setting the bottom panel, column, top plate, hydraulic rod, middle slide plate, torque motor, platform, oil seepage cleaning module, pressure monitoring module, lower pressing rod, check valve body and fixed pipeline, the device can effectively clean the hydraulic oil seepage on the fixed pipeline caused by the tensile compression test by using the oil seepage cleaning module, so that the connection between the fixed pipeline and the check valve body can be kept clean, thereby reducing the interference factors of the check valve body detection and improving the accuracy and reliability of the detection results of the check valve body.

[0010] In a preferred scheme, the outer part of the sleeve is fixedly connected with a supporting ring, the supporting ring is located below the mounting ring, the upper side of the supporting ring is fixedly connected with three circumferentially equidistant telescopic rods, the output ends of the telescopic rods are fixedly connected with the bottom of the mounting ring, and the outer part of the sleeve is slidingly connected with a gear one, the bottom of the gear one is movably connected with the upper side of the mounting ring; the outer part of the mounting ring is fixedly connected with a motor one, the output end of the motor one is connected with a gear two through a shaft coupling, the gear two is engaged with the gear one, the upper side of the gear one is fixedly connected with two symmetrical bosses, the bosses are movably connected with circular rods, and the outer parts of the circular rods are movably connected with the outer parts of the same side rotating frames; the outer parts of the two bosses are fixedly connected with annular frames, the inner walls of the annular frames are fixedly connected with torsional springs, the ends of the torsional springs away from the annular frames are fixedly connected with the outer parts of the same side circular rods, the outer parts of the two rotating frames are fixedly connected with contact blocks, the outer part of the sleeve is fixedly connected with a stop ring, the bottoms of the stop ring are in contact with the outer parts of the two contact blocks, the opposite sides of the two bosses are fixedly connected with stop plates, and the ends of the two stop plates away from the bosses are in contact with the outer parts of the same side rotating frames; the two rotating frames are both provided with a rectangular groove, the inner walls of the rectangular grooves are movably connected with cylindrical barrels, a plurality of equidistantly distributed fine holes are formed in the outer parts of the two cylindrical barrels, the outer part of one of the cylindrical barrels is fixedly connected with a brush, and the outer part of the other cylindrical barrel is fixedly connected with the inner wall of wiping cotton; the sides of the two cylindrical barrels away from the fixed pipeline are both provided with notches, the notches are movably connected with a conveying pipe and a suction pipe respectively, the ends of the conveying pipe and the suction pipe away from the cylindrical barrels are fixedly connected with storage box one and storage box two respectively, the opposite sides of the storage box one and the storage box two relative to the same side rotating frame are fixedly connected, the upper sides of the storage box one and the storage box two are fixedly connected with pump one and pump two respectively, the output end of the pump one is connected with the conveying pipe through a circular pipe, and the output end of the pump two is connected with the suction pipe through a fine pipe; the outer part of the rotating frame on the same side as the brush is fixedly connected with a motor two, the output end of the motor two is connected with the end of the cylindrical barrel away from the conveying pipe through a shaft coupling, and the outer part of the wiping cotton is attached with two symmetrical pressing plates, and the outer parts of the two pressing plates are fixedly connected with the outer part of the same side rotating frame.

[0011] The oil seepage cleaning module is used for cleaning the oil stains on the pipe opening of the fixed pipeline by using the contact block and the blocking ring, so that the rotating frame can be quickly and conveniently arranged on the pipe opening of the fixed pipeline, and the rotating frame can be used only when needed, thereby reducing the occupation of the space on the fixed pipeline and avoiding the interference with the experiment.

[0012] In a preferred scheme, a groove is formed in the inner wall of the bottom of the stabilizing frame, a connecting pipe is slidably connected in the groove, the outer part of the connecting pipe is attached to the inner wall of the pressure sensor, and the outer part of the connecting pipe is fixedly connected with a movable plate, the outer part of the movable plate is slidably connected with the inner wall of the stabilizing frame, the bottom of the movable plate is in contact with the upper side of the pressure sensor, and the bottom of the pressure sensor is fixedly connected with the inner wall of the bottom of the stabilizing frame; the inner wall of the connecting pipe is fixedly connected with the inner wall of the fixed pipeline, an annular groove is formed in the outer part of the connecting pipe, and a sealing gasket is fixedly connected in the annular groove, the upper side of the sealing gasket is in contact with the bottom of the fixed pipeline, a plurality of circumferentially equidistant circular openings are formed in the inner wall of the bottom of the stabilizing frame, a spring is fixedly connected in each circular opening, one end of each spring close to the movable plate is fixedly connected with the bottom of the movable plate, and two grooves are formed in the stabilizing frame and the connecting pipe, the same oil delivery pipe is fixedly connected in the two grooves on the same side, an oil pump is arranged on the outer part of each oil delivery pipe, the outer part of each oil pump is fixedly connected with the upper side of the bottom panel, and the output end of each oil pump is connected with the oil delivery pipe on the same side through a conduit.

[0013] The pressure monitoring module is used for injecting pressurized hydraulic oil into the fixed pipeline through the connecting pipe and the oil pump, so that the device can simulate the actual use of the check valve body, the test result of the check valve body is closer to the actual situation, and the pressure sensor is used for monitoring the tension and pressure, so that the device can have a clearer judgment on the deformation of the check valve body under various stress conditions.

[0014] A method for testing the tensile, torsional and compressive forces of an inner blowout prevention tool, using an inner blowout prevention tool tensile, torsional and compressive force testing device as described above, comprising the following steps:

[0015] Step one, before installing the check valve body to be detected on the fixed pipeline, the oil stains on the pipe opening of the fixed pipeline are cleaned by using the oil seepage cleaning module, and after the cleaning, the check valve body is connected with the fixed pipeline and the lower pressing rod.

[0016] Step two, start the oil pump, make the oil pump inject hydraulic oil into the connecting pipe through the oil pipe, so that the fixed pipe is filled with pressurized hydraulic oil, start the hydraulic rod, make the output end of the hydraulic rod retract or lengthen, so that the middle slide plate drives the lower pressing rod to detect the pressure or tension of the check valve body, start the torque motor, make the torque motor drive the lower pressing rod to detect the torsion of the check valve body, and use the pressure monitoring module to record and monitor the pressure change on the lower pressing rod.

[0017] As can be seen from the above, the internal blowout prevention tool tension-torsion-pressure test device provided by the application can effectively clean the penetration of hydraulic oil caused by tension-torsion-pressure test on the fixed pipe, so that the connection between the fixed pipe and the check valve body can be kept clean, thereby reducing the interference factors of the check valve body detection and improving the accuracy and reliability of the detection results of the check valve body. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The overall structure schematic diagram of the internal blowout prevention tool tension-torsion-pressure test device is provided.

[0019] Figure 2 The cross-sectional structure schematic diagram of the internal blowout prevention tool tension-torsion-pressure test device is provided.

[0020] Figure 3 The oil penetration cleaning module structure schematic diagram of the internal blowout prevention tool tension-torsion-pressure test device is provided.

[0021] Figure 4 The sleeve structure schematic diagram of the internal blowout prevention tool tension-torsion-pressure test device is provided.

[0022] Figure 5 The rotating frame structure schematic diagram of the internal blowout prevention tool tension-torsion-pressure test device is provided.

[0023] Figure 6 The wiping cotton structure schematic diagram of the internal blowout prevention tool tension-torsion-pressure test device is provided.

[0024] Figure 7 The pressure monitoring module structure schematic diagram of the internal blowout prevention tool tension-torsion-pressure test device is provided.

[0025] In the figure: 1, bottom panel; 2, stand; 3, top plate; 4, hydraulic rod; 5, middle sliding plate; 6, torque motor; 7, bearing platform; 8, oil seepage cleaning module; 801, sleeve; 802, supporting ring; 803, mounting ring; 804, telescopic rod; 805, gear one; 806, motor one; 807, gear two; 808, stop ring; 809, boss; 810, rotating frame; 811, stop plate; 812, torsional spring; 813, contact block; 814, rectangular groove; 815, cylindrical barrel; 816, brush; 817, fine hole; 818, storage box one; 819, conveying pipe; 820, pump one; 821, wiping cotton; 822, pressing plate; 823, storage box two; 824, suction pipe; 825, pump two; 826, motor two; 9, pressure monitoring module; 901, stabilizing frame; 902, connecting pipe; 903, pressure sensor; 904, gasket; 905, movable plate; 906, spring; 907, oil conveying pipe; 908, oil pump; 10, lower pressing rod; 11, check valve body; 12, fixed pipeline. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0027] The disclosed internal blowout prevention tool tension-torsion pressure testing device is mainly applied to the scene where the existing detection device cannot clean the seepage hydraulic oil.

[0028] REFERENCE Figures 1-7 The internal blowout prevention tool tension-torsion pressure testing device comprises a bottom panel 1, four symmetrical stands 2 are connected to the bottom panel 1 through bolts, the same top plate 3 is connected to the outside of the four stands 2 through bolts, and the same middle sliding plate 5 is slidingly connected to the outside of the four stands 2, a hole is formed in the middle sliding plate 5, a torque motor 6 is connected to the inner wall of the hole through bolts, a lower pressing rod 10 is connected to the bottom of the torque motor 6 through bolts, a bearing platform 7 is connected to the upper side of the bottom panel 1 through bolts, a fixed pipeline 12 is arranged above the bearing platform 7, the same check valve body 11 is connected to the side opposite to the lower pressing rod 10 of the fixed pipeline 12 through flanges, and an oil seepage cleaning module 8 is arranged outside the fixed pipeline 12, a pressure monitoring module 9 is arranged on the bearing platform 7, two symmetrical hydraulic rods 4 are connected to the upper side of the bottom panel 1 through bolts, and the output ends of the hydraulic rods 4 are connected to the bottom of the middle sliding plate 5 through bolts.

[0029] The oil seepage cleaning module 8 comprises a sleeve 801, the inner wall of the sleeve 801 is connected with the outside of the fixed pipe 12 through bolts, the sleeve 801 is slidably connected with a mounting ring 803, the outside of the sleeve 801 is provided with two symmetrical rotating frames 810, and the two rotating frames 810 are respectively provided with a brush 816 and a wiping cotton 821;

[0030] The pressure monitoring module 9 comprises a stabilizing frame 901, the stabilizing frame 901 is provided with a pressure sensor 903, and the pressure sensor 903 is located below the fixed pipe 12.

[0031] Specifically, before the check valve body 11 to be detected is installed on the fixed pipe 12, the oil stain of the hydraulic oil on the pipe opening of the fixed pipe 12 is cleaned by using the oil seepage cleaning module 8, after the cleaning is completed, the check valve body 11 is connected with the fixed pipe 12 and the lower pressing rod 10, the oil pump 908 is started, the oil pump 908 injects the hydraulic oil into the connecting pipe 902 through the oil conveying pipe 907, so that the fixed pipe 12 is filled with the pressurized hydraulic oil, the hydraulic rod 4 is started, the output end of the hydraulic rod 4 is retracted or elongated, so that the middle sliding plate 5 drives the lower pressing rod 10 to detect the pressure or tensile force of the check valve body 11, the torque motor 6 is started, the torque motor 6 drives the lower pressing rod 10 to detect the torsion of the check valve body 11, and the pressure monitoring module 9 is used to record the pressure change of the lower pressing rod 10 for monitoring; the device can effectively clean the hydraulic oil seepage on the fixed pipe 12 caused by the tensile and torsional pressure test by using the oil seepage cleaning module 8, so that the connection between the fixed pipe 12 and the check valve body 11 can be kept clean, thereby reducing the interference factors of the check valve body 11 detection, and improving the accuracy and reliability of the detection result of the check valve body 11.

[0032] Referring to Figure 3 , Figure 4 , Figure 5 and Figure 6In a preferred implementation, the outer part of the sleeve 801 is bolted with a supporting ring 802, which is below the mounting ring 803. The upper side of the supporting ring 802 is bolted with three circumferentially equidistant telescopic rods 804. The output ends of the telescopic rods 804 are bolted with the bottom of the mounting ring 803. The outer part of the sleeve 801 is slidingly connected with a gear one 805. The bottom of the gear one 805 is rotatably connected with the upper side of the mounting ring 803 through a bearing. The outer part of the mounting ring 803 is bolted with a motor one 806. The output end of the motor one 806 is connected with a gear two 807 through a shaft coupling. The gear two 807 is engaged with the gear one 805. The upper side of the gear one 805 is bolted with two symmetrical bosses 809. The bosses 809 are rotatably connected with circular rods through bearings. The outer parts of the circular rods are rotatably connected with the outer parts of the same side rotating frames 810 through bearings. The outer parts of the two bosses 809 are bolted with annular frames. The inner walls of the annular frames are bolted with torsion springs 812. The ends of the torsion springs 812 away from the annular frames are bolted with the outer parts of the same side circular rods. The outer parts of the two rotating frames 810 are bolted with contact blocks 813. The outer part of the sleeve 801 is bolted with a blocking ring 808. The bottom of the blocking ring 808 is in contact with the outer parts of the two contact blocks 813. The opposite sides of the two bosses 809 are bolted with stop plates 811. The ends of the two stop plates 811 away from the bosses 809 are in contact with the outer parts of the same side rotating frames 810. Rectangular grooves 814 are formed in the two rotating frames 810. The inner walls of the rectangular grooves 814 are rotatably connected with cylindrical tubes 815 through bearings. A plurality of equidistantly distributed small holes 817 are formed in the two cylindrical tubes 815. The outer part of one of the cylindrical tubes 815 is bolted with a brush 816. The outer part of the other cylindrical tube 815 is bolted with the inner wall of a wiping cotton 821. Notches are formed in the sides of the two cylindrical tubes 815 away from the fixed pipeline 12. A conveying pipe 819 and a suction pipe 824 are rotatably connected in the notches through bearings. The ends of the conveying pipe 819 and the suction pipe 824 away from the cylindrical tubes 815 are bolted with a storage box one 818 and a storage box two 823, respectively. The storage box one 818 and the storage box two 823 are bolted with the opposite sides of the same side rotating frames 810. The upper sides of the storage box one 818 and the storage box two 823 are bolted with a pump one 820 and a pump two 825, respectively. The output end of the pump one 820 is connected with the conveying pipe 819 through a circular pipe. The output end of the pump two 825 is connected with the suction pipe 824 through a thin pipe. The outer part of the same side rotating frame 810 is bolted with a motor two 826. The output end of the motor two 826 is connected with the end of the cylindrical tube 815 away from the conveying pipe 819 through a shaft coupling. The outer part of the wiping cotton 821 is attached with two symmetrical pressing plates 822. The two pressing plates 822 are bolted with the outer parts of the same side rotating frames 810.

[0033] Specifically, since the detection of the pull, pressure and torsion will cause the check valve body 11 to produce deformation, the hydraulic oil in the fixed pipeline 12 will seep out from the interface between the fixed pipeline 12 and the check valve body 11, after the check valve body 11 is removed, the telescopic rod 804 is started, the output end of the telescopic rod 804 lifts the mounting ring 803, so that the contact block 813 on the rotating frame 810 contacts the blocking ring 808, and finally completely matches the blocking ring 808 as the rotating frame 810 rises, at this time the part of the rotating frame 810 on which the cylindrical barrel 815 is installed will be matched with the pipe opening of the fixed pipeline 12, the motor one 806 is started, the motor one 806 drives the gear one 805 engaged with the gear two 807 to rotate, so that the two rotating frames 810 rotate around the fixed pipeline 12 as the axis, the motor two 826 is started, the motor two 826 drives the cylindrical barrel 815 on which the brush 816 is installed to rotate, the pump one 820 is started, the pump one 820 transports the cleaning agent in the storage tank one 818 through the delivery pipe 819 and sprays it from the fine hole 817, so that the brush 816 can wash the oil stains, and the wiping cotton 821 on the other rotating frame 810 wipes the pipe opening of the fixed pipeline 12 as it rotates, the pump two 825 is started, the pump two 825 extracts the mixture of the cleaning agent and the oil stains through the fine hole 817 and transports it into the storage tank two 823 through the suction pipe 824.

[0034] In a specific application scenario, the oil seepage cleaning module 8 is mainly suitable for the oil seepage cleaning link in the oil seepage cleaning process, that is, the oil seepage cleaning module 8 uses the contact block 813 and the blocking ring 808 to make the rotating frame 810 can quickly and conveniently deploy the motor two 826 and the wiping cotton 821 on the pipe opening of the fixed pipeline 12, so that the rotating frame 810 can be used only when needed, reducing the occupation of the space on the fixed pipeline 12, avoiding the situation of interfering with the experiment, and at the same time using the measures of washing and wiping to effectively improve the cleaning efficiency of the oil stains on the pipe opening of the fixed pipeline 12.

[0035] Reference Figure 7In a preferred embodiment, a groove is formed in the inner wall of the bottom of the stabilizing frame 901, and a connecting pipe 902 is slidably connected in the groove. The outer part of the connecting pipe 902 is attached to the inner wall of the pressure sensor 903, and the outer part of the connecting pipe 902 is connected to the movable plate 905 by bolts. The outer part 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 connected to the bottom inner wall of the stabilizing frame 901 by bolts. The inner wall of the connecting pipe 902 is fixedly connected to the inner wall of the fixed pipe 12. An annular groove is formed in the outer part of the connecting pipe 902, and a sealing gasket 904 is connected in the annular groove by bolts. The upper side of the sealing gasket 904 is in contact with the bottom of the fixed pipe 12. A plurality of circumferentially equidistant circular openings are formed in the bottom inner wall of the stabilizing frame 901, and a spring 906 is connected in each circular opening by bolts. The end of the spring 906 close to the movable plate 905 is connected to the bottom of the movable plate 905 by bolts. Two slots are formed in the stabilizing frame 901 and the connecting pipe 902, and a same oil delivery pipe 907 is connected in the two slots on the same side by bolts. An oil pump 908 is arranged on the outer part of each oil delivery pipe 907, and the outer part of the oil pump 908 is connected to the upper side of the bottom panel 1 by bolts. The output end of each oil pump 908 is connected to the oil delivery pipe 907 on the same side by a conduit.

[0036] Specifically, the fixed pipe 12 is inserted into the connecting pipe 902, so that the bottom of the connecting pipe 902 can be attached to the sealing gasket 904. Under the influence of the gravity of the fixed pipe 12, the movable plate 905 drives the connecting pipe 902 to descend by overcoming the elastic force of the spring 906, so that the movable plate 905 is attached to the pressure sensor 903. After the check valve body 11 is connected to the fixed pipe 12 and the downward pressing rod 10, the oil pump 908 is started, and 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 test the check valve body 11 under pressure, tension and torque or two of them at the same time, the pressure sensor 903 detects the pressure and tension applied by the downward pressing rod 10 to the check valve body 11, so that the check valve body 11 can record the pressure or tension in time when it is deformed.

[0037] In a specific application scenario, the pressure monitoring module 9 is mainly suitable for the pressure monitoring link in the pressure monitoring process. That is, the device can inject pressurized hydraulic oil into the fixed pipe 12 through the connecting pipe 902 and the oil pump 908, so that the device can simulate the actual use of the check valve body 11, and the test results of the check valve body 11 are closer to the actual situation. The use of the pressure sensor 903 for monitoring tension and pressure enables the device to have a clearer judgment on the deformation of the check valve body 11 under various stress conditions.

[0038] A method for testing the tensile, torsional and compressive pressure of an inner blowout preventer, using an inner blowout preventer tensile, torsional and compressive pressure testing device as described above, comprising the following steps:

[0039] Step one, before installing the check valve body 11 to be detected on the fixed pipeline 12, use the oil cleaning module 8 to clean the oil stains of the hydraulic oil on the pipe opening of the fixed pipeline 12, after cleaning, connect the check valve body 11 with the fixed pipeline 12 and the lower pressing rod 10 (after the check valve body 11 is removed, start the telescopic rod 804, the output end of the telescopic rod 804 lifts the mounting ring 803, so that the contact block 813 on the rotating frame 810 contacts with the blocking ring 808, and finally completely fits with the blocking ring 808 as the rotating frame 810 rises, at this time the part of the rotating frame 810 on which the cylindrical barrel 815 is installed will fit with the pipe opening of the fixed pipeline 12, start the motor one 806, the motor one 806 drives the gear one 805 engaged with the gear two 807 to rotate, so that the two rotating frames 810 rotate around the fixed pipeline 12 as the axis, start the motor two 826, the motor two 826 drives the cylindrical barrel 815 on which the brush 816 is installed to rotate, start the pump one 820, the pump one 820 delivers the cleaning agent in the storage tank one 818 through the delivery pipe 819 and sprays it from the fine hole 817, so that the brush 816 can wash the oil stains, the wiping cotton 821 on the other rotating frame 810 wipes the pipe opening of the fixed pipeline 12 as it rotates, start the pump two 825, the pump two 825 extracts the mixture of the cleaning agent and the oil stains through the fine hole 817 and delivers it into the storage tank two 823 through the suction pipe 824);

[0040] Step two, start the oil pump 908, so that the oil pump 908 injects hydraulic oil into the connecting pipe 902 through the oil pipe 907, so that the fixed pipe 12 is filled with pressurized hydraulic oil, start the hydraulic rod 4, so that the output end of the hydraulic rod 4 retracts or extends, so that the middle slide plate 5 drives the lower pressing rod 10 to detect the pressure or tension of the check valve body 11, start the torque motor 6, so that the torque motor 6 drives the lower pressing rod 10 to detect the torsion of the check valve body 11, use the pressure monitoring module 9 to record the pressure change of the lower pressing rod 10 for monitoring (align the fixed pipe 12 with the connecting pipe 902, insert the connecting pipe 902, the bottom of the connecting pipe 902 can be attached to the sealing gasket 904, affected by the gravity of the fixed pipe 12, the movable plate 905 drives the connecting pipe 902 to descend by overcoming the elastic force of the spring 906, so that the movable plate 905 is attached to the pressure sensor 903, after the check valve body 11 is connected with the fixed pipe 12 and the lower pressing rod 10, start the oil pump 908, the oil pump 908 pumps hydraulic oil into the fixed pipe 12 through the oil pipe 907, when starting the hydraulic rod 4 and the torque motor 6 to test the check valve body 11 under pressure, tension and torsion or two of them at the same time, the pressure sensor 903 detects the pressure and tension applied by the lower pressing rod 10 to the check valve body 11, so that the check valve body 11 can record the pressure or tension in time when deformed).

[0041] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A device for testing the tensile, torsional and compressive strength of an internal blowout preventer, comprising a base panel (1), characterised in that, The bottom panel (1) is fixedly connected with four symmetrical columns (2), the outer part of the four columns (2) is fixedly connected with the same top plate (3), and the outer part of the four columns (2) is slidably connected with the same middle slide plate (5), the middle slide plate (5) is provided with an aperture, the inner wall of the aperture is fixedly connected with a torque motor (6), the bottom of the torque motor (6) is fixedly connected with a pressing rod (10), the upper side of the bottom panel (1) is fixedly connected with a bearing platform (7), the upper part of the bearing platform (7) is provided with a fixed pipeline (12), the side, opposite to the pressing rod (10), of the fixed pipeline (12) is connected with the same check valve body (11) through a flange, and the outer part of the fixed pipeline (12) is provided with an oil seepage cleaning module (8), the bearing platform (7) is provided with a pressure monitoring module (9), the upper side of the bottom panel (1) is fixedly connected with two symmetrical hydraulic rods (4), and the output ends of the hydraulic rods (4) are fixedly connected with the bottom of the middle slide plate (5); The oil seepage cleaning module (8) comprises a sleeve (801), the inner wall of the sleeve (801) is fixedly connected with the outer part of the fixed pipeline (12), the sleeve (801) is slidably connected with a mounting ring (803), the outer part of the sleeve (801) is provided with two symmetrical rotating frames (810), and the rotating frames (810) are respectively provided with a brush (816) and wiping cotton (821); The pressure monitoring module (9) comprises a stabilizing frame (901), the stabilizing frame (901) is provided with a pressure sensor (903), and the pressure sensor (903) is located below the fixed pipeline (12); The outer part of the sleeve (801) is fixedly connected with a supporting ring (802), the supporting ring (802) is located below the mounting ring (803), the upper side of the supporting ring (802) is fixedly connected with three circumferentially equidistantly distributed telescopic rods (804), the output ends of the telescopic rods (804) are fixedly connected with the bottom of the mounting ring (803), and the outer part of the sleeve (801) is slidably connected with a gear one (805), the bottom of the gear one (805) is movably connected with the upper side of the mounting ring (803); The outer part of the mounting ring (803) is fixedly connected with a motor one (806), the output end of the motor one (806) is connected with a gear two (807) through a shaft coupling, the gear two (807) is meshed with the gear one (805), and the upper side of the gear one (805) is fixedly connected with two symmetrical bosses (809), the bosses (809) are movably connected with circular rods, and the outer parts of the circular rods are movably connected with the outer parts of the same rotating frames (810). The outer part of two bosses (809) is fixedly connected with annular frames, the inner wall of the annular frame is fixedly connected with torsion springs (812), the end, away from the annular frame, of the torsion spring (812) is fixedly connected with the outer part of the same side circular rod, the outer part of two rotating frames (810) is fixedly connected with contact blocks (813), the outer part of the sleeve (801) is fixedly connected with stop rings (808), the bottom of the stop ring (808) is in contact with the outer part of two contact blocks (813), the side, opposite to the boss (809), of the two stop plates (811) is fixedly connected with the rotating frame (810) on the same side.

2. A device for testing the tensile, torsional and compressive strength of an internal blowout preventer according to claim 1, characterized in that, The rotating frame (810) is provided with a rectangular groove (814), the inner wall of the rectangular groove (814) is movably connected with a cylindrical barrel (815), a plurality of equidistantly distributed fine holes (817) are formed in the cylindrical barrel (815), the outer part of the cylindrical barrel (815) is fixedly connected with a brush (816), and the outer part of the other cylindrical barrel (815) is fixedly connected with the inner wall of a wiping cotton (821).

3. A device for testing the tensile, torsional and compressive strength of an internal blowout preventer, according to claim 2, characterized in that, The side, away from the fixed pipe (12), of the cylindrical barrel (815) is provided with a notch, the notch is movably connected with a conveying pipe (819) and a suction pipe (824), the end, away from the cylindrical barrel (815), of the conveying pipe (819) and the suction pipe (824) is fixedly connected with a storage box one (818) and a storage box two (823), the side, opposite to the rotating frame (810), of the storage box one (818) and the storage box two (823) is fixedly connected with the rotating frame (810) on the same side, the upper side of the storage box one (818) and the storage box two (823) is fixedly connected with a pump one (820) and a pump two (825), the output end of the pump one (820) is connected with the conveying pipe (819) through a circular pipe, and the output end of the pump two (825) is connected with the suction pipe (824) through a fine tube.

4. The device of claim 3, wherein, The outer part of the rotating frame (810) on the same side with the brush (816) is fixedly connected with a motor two (826), the output end of the motor two (826) is connected with the end, away from the conveying pipe (819), of the cylindrical barrel (815) through a shaft coupling, and the outer part of the wiping cotton (821) is attached with two symmetrical pressing plates (822), and the outer part of the two pressing plates (822) is fixedly connected with the rotating frame (810) on the same side.

5. A device for testing the tensile, torsional and compressive strength of an internal blowout preventer, according to claim 4, characterized in that, The bottom inner wall of the stable frame (901) is provided with a groove, a connecting pipe (902) is slidably connected in the groove, the outer part of the connecting pipe (902) is attached with the inner wall of a pressure sensor (903), the outer part of the connecting pipe (902) is fixedly connected with a movable plate (905), the outer part of the movable plate (905) is slidably connected with the inner wall of the stable frame (901), the bottom of the movable plate (905) is in contact with the upper side of the pressure sensor (903), and the bottom of the pressure sensor (903) is fixedly connected with the bottom inner wall of the stable frame (901).

6. A device for testing the tensile, torsional and compressive strength of an internal blowout preventer, according to claim 5, characterized in that, The inner wall of the connecting pipe (902) is fixedly connected with the inner wall of the fixed pipe (12), an annular groove is arranged on the outer part 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) is in contact with the bottom of the fixed pipe (12), a plurality of circumferentially equidistant circular openings are arranged on the inner wall of the bottom of the stabilizing frame (901), a spring (906) is fixedly connected in each circular opening, one end of the spring (906) close to the movable plate (905) is fixedly connected with the bottom of the movable plate (905), and two slot holes are arranged on the stabilizing frame (901) and the connecting pipe (902), a same oil conveying pipe (907) is fixedly connected in the two slot holes on the same side, an oil pump (908) is arranged on the outer part of each oil conveying pipe (907), the outer part of the oil pump (908) is fixedly connected with the upper side of the bottom panel (1), and the output end of each oil pump (908) is connected with the oil conveying pipe (907) on the same side through a conduit.

7. A method for testing a tensile, torsional and compressive pressure of an inner blowout preventer using the inner blowout preventer tensile, torsional and compressive pressure testing device according to claim 6, wherein, The method comprises the following steps: Step one, before installing the check valve body (11) to be detected on the fixed pipe (12), use the oil cleaning module (8) to clean the oil stains of the hydraulic oil on the pipe opening of the fixed pipe (12), after cleaning, connect the check valve body (11) with the fixed pipe (12) and the pressing rod (10); Step two, start the oil pump (908), so that the oil pump (908) injects hydraulic oil into the connecting pipe (902) through the oil conveying pipe (907), so that the fixed pipe (12) is filled with pressurized hydraulic oil, start the hydraulic rod (4), so that the output end of the hydraulic rod (4) retracts or extends, so that the middle sliding plate (5) drives the pressing rod (10) to detect the pressure or tension of the check valve body (11), start the torque motor (6), so that the torque motor (6) drives the pressing rod (10) to detect the torsion of the check valve body (11), and use the pressure monitoring module (9) to record the pressure change of the pressing rod (10) for monitoring.

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