A back-off device and tubing hanger running test apparatus

Abstract

The application discloses a docking device and a tubing hanger crossing test device, and relates to the technical field of underwater Christmas tree equipment. The docking device comprises a first joint, a second joint and a fixing assembly. When the docking device is in a docking state, a first valve core abuts against a second valve core. Under the cooperation of a first reset member and a second reset member, a first device passes through a first valve cavity, and a second valve cavity is communicated with the first valve cavity. The fixing assembly improves the stability of the first joint and the second joint when they are docked, reduces the shaking of the first joint and / or the second joint, enables the first joint and the second joint to more stably maintain the docking state, and reduces the problems of contamination and corrosion of the first device and / or the second device. When the docking device is in a disconnected state, a first valve core and a first valve seat form a first sealing pair, and a second valve core and a second valve seat form a second sealing pair, which reduces the problem of the entry of external impurities such as dust and seawater into the first device and the second device.

Description

Technical Field

[0001] The present invention relates to the technical field of fasteners, and in particular to a fastener and an oil pipe hanger crossing test device. Background Art

[0002] The fastener includes two connectors, which are connected to the first device and the second device respectively. By connecting the two connectors, the first device and the second device can be connected, so that a medium such as hydraulic oil can flow between the two devices, or a cable can be sent into the first device or the second device through the first connector and the second connector. However, whether the fastener is used in a ground or underwater environment, impurities in the air or seawater can easily enter the corresponding device through the first connector or the second connector, causing contamination or corrosion of the relevant equipment. Moreover, when the first device and the second device are connected through the fastener, they are affected by loads such as wind or water, which can easily cause the joint between the first connector and the second connector to loosen, resulting in the disconnection of the first connector and the second connector, which undoubtedly further increases the corrosion and contamination in the corresponding equipment.

[0003] Therefore, how to reduce the contamination and corrosion of two devices connected by a buckle has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The object of the present invention is to provide a fastener and an oil pipe hanger crossing test device to reduce the contamination and corrosion generated in a first device and a second device connected by the fastener.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a fastener, which includes a first joint, a second joint and a fixing assembly:

[0007] The first joint includes a first valve body, a first valve cavity is provided in the first valve body, a first valve seat, a first valve core and a first return member are provided in the first valve cavity, the first valve core is slidably provided in the first valve cavity, two ends of the first return member are respectively abutted against the first valve core and the first valve body, and the first return member applies a first force to the first valve core toward the first valve seat;

[0008] The second joint includes a second valve body, a second valve cavity is provided in the second valve body, a second valve seat, a second valve core and a second return member are provided in the second valve cavity, two ends of the second return member are respectively abutted against the second valve core and the second valve body, the second valve core is slidably provided in the second valve cavity, and the second return member applies a second force on the second valve core toward the second valve seat;

[0009] The first valve cavity is configured to communicate with the first device, and the second valve cavity is configured to communicate with the second device; the first force is arranged opposite to the second force and is equal to the second force.

[0010] When the docking device is in the disconnected state, the first valve core forms a first sealing pair with the first valve seat, and the second valve core forms a second sealing pair with the second valve seat.

[0011] When the docking device is in the connected state, the first connector moves a preset distance toward the second connector under the action of an external force, so that the first valve core and the second valve core abut, the first device communicates with the second device through the first valve cavity and the second valve cavity; the fixing assembly is configured to fix the first connector to the second device and / or fix the second connector to the first device.

[0012] Preferably, the first valve core is located in the first valve cavity, and the second valve core is located in the second valve cavity; when the docking device is in the connected state, the second end of the first connector and the first end of the second connector are sleeved together.

[0013] Preferably, when the docking device is in the connected state, the second end of the first connector and the first end of the second connector abut; when the docking device is in the disconnected state, the first end of the first valve core is located outside the second end of the first connector, and / or the first end of the second valve core is located outside the second end of the second connector.

[0014] Preferably, when the docking device is in the connected state, the first valve cavity and the second valve cavity are coaxially arranged, and the first valve core and the second valve core are coaxially arranged.

[0015] Preferably, the docking device comprises a guide assembly, the guide assembly comprises a first guide member and a second guide member, the first guide member comprises a second end of the first valve body, the second end of the first valve body forms a first guide ring, and the second guide member comprises a first end of the second valve body, the first end of the second valve body is provided with a first guide groove capable of forming a first guide pair with the first guide ring.

[0016] Preferably, the guide assembly further comprises a third guide member and a fourth guide member, the first guide ring is provided with a second guide ring outside, the third guide member comprises a second guide groove arranged between the first guide ring and the second guide ring, and the fourth guide member comprises a third guide ring arranged outside the first guide groove, and the second guide groove is capable of forming a second guide pair with the third guide ring.

[0017] Preferably, the guiding assembly further comprises a fifth guiding member and a sixth guiding member, the fifth guiding member comprises a fourth guiding ring arranged between the first guiding ring and the second guiding ring, the sixth guiding member comprises a fifth guiding ring arranged between the first guiding groove and the third guiding ring, and the fourth guiding ring and the fifth guiding ring can form a third guiding pair.

[0018] Preferably, the buckle further comprises a sealing assembly, the sealing assembly comprises a first sealing unit arranged between the second valve body and the fifth guiding ring, and a second sealing unit arranged between the first guiding ring and the fifth guiding ring.

[0019] In addition, the present application also provides a tubing hanger running test device, the tubing hanger running test device comprises the above-mentioned buckle, and a simulated tubing hanger, the simulated tubing hanger is the first device or the second device.

[0020] Preferably, the simulated tubing hanger is the second device, the second valve body is fixed on the simulated tubing hanger, and the first valve body is fixed on a test disc.

[0021] The fixing assembly comprises a first fixing member, when the buckle is in the docking state, the first fixing member is used for fixing the test disc on the simulated tubing hanger.

[0022] Preferably, the first fixing member comprises a first connecting segment and a second connecting segment connected with each other, the first connecting segment is used for fixed connection with the test disc, when the buckle is in the docking state, the second connecting segment is located at an end of the first valve body away from the test disc, the second connecting segment is used for being connected with the simulated tubing hanger, and a movement stroke of the second connecting segment towards the simulated tubing hanger is not less than a distance between the first valve core and the second valve core.

[0023] The present application has the following technical effects relative to the prior art:

[0024] The first joint comprises a first valve body, a first valve cavity is arranged in the first valve body, a first valve seat, a first valve core and a first reset member are arranged in the first valve cavity, the first valve core is slidingly arranged in the first valve cavity, the two ends of the first reset member are respectively abutted with the first valve core and the first valve body, the first reset member applies a first action force to the first valve core towards the first valve seat; the second joint comprises a second valve body, a second valve cavity is arranged in the second valve body, a second valve seat, a second valve core and a second reset member are arranged in the second valve cavity, the second valve core is slidingly arranged in the second valve cavity, the two ends of the second reset member are respectively abutted with the second valve core and the second valve body, the second reset member applies a second action force to the second valve core towards the second valve seat; wherein the first valve cavity is used for being communicated with the first device, the second valve cavity is used for being communicated with the second device, the first action force and the second action force are oppositely arranged and have the same size;

[0025] When the docking device is in the docking state, under the external force (the external force can be the action force applied by the mechanical hand or the operator to the first joint and / or the second joint), the first valve core moves in the direction close to the second valve core by a preset distance, and then the first valve core abuts against the second valve core, and then the first reset member and the second reset member are compressed when the first valve core continuously moves close to the second valve core, and because the first action force and the second action force are equal, the first valve core moves in the direction away from the first valve seat, and the second valve core moves in the direction away from the second valve seat, so that the first device is communicated with the second device through the first valve cavity and the second valve cavity, and then the liquid can flow between the first device and the second device;

[0026] Moreover, the docking device further comprises a fixing assembly, when the docking device is in the docking state, the fixing assembly is used for fixing the first joint on the second device and / or fixing the second joint on the first device, which improves the stability of the first joint and the second joint when they are docked, reduces the shaking of the first joint and / or the second joint, so that the first joint and the second joint can more stably maintain the docking state, and reduces the problem that the first joint and the second joint are easily shaken under the action of external loads such as wind force or water force without the fixing assembly, so that the impurities such as external dust or seawater enter the first device and / or the second device, causing the first device and / or the second device to be polluted and corroded;

[0027] Furthermore, because the first restoring member can apply a first force toward the first valve seat to the first valve core, when the fastener is in the disconnected state or accidentally disconnected during docking, the first valve core and the first valve seat fit together and form a first sealing pair, thereby blocking the first valve chamber and reducing the problem of foreign matter such as dust or seawater entering the first device from the first valve chamber (the first valve chamber being blocked means that foreign matter cannot easily enter the first device from the first valve chamber); similarly, because the second restoring member can apply a second force toward the second valve seat to the second valve core, when the fastener is in the disconnected state, the second valve core and the second valve seat fit together and form a second sealing pair, thereby blocking the second valve chamber and reducing the problem of foreign matter such as dust or seawater entering the second device from the second valve chamber (the second valve chamber being blocked means that foreign matter cannot easily enter the second device from the second valve chamber);

[0028] In summary, compared with the existing technology that does not adopt the fastener in the present invention, regardless of whether the fastener is in the docked state or the disconnected state, the present invention reduces the probability of external impurities such as dust or seawater entering the first device and the second device, reduces the contamination and corrosion of the first device and the second device, and reduces the maintenance cost of the first device and the second device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a structural diagram of the buckle device;

[0031] Figure 2 is a schematic structural diagram of the second joint;

[0032] Figure 3 is a cross-sectional view of the buckle;

[0033] Figure 4 It is a partial cross-sectional view of the buckle;

[0034] Figure 5 A partial cross-sectional view of the coupling between the fastener and the simulated tubing hanger;

[0035] Figure 6 It is a structural diagram of the cooperation between the buckle and the simulated tubing hanger;

[0036] Wherein, 1, test disc; 2, bolt; 3, first nut; 4, second nut; 5, buckle; 6, support frame; 7, shock joint; 8, hydraulic line; 9, first valve body; 10, first valve cavity; 11, first inlet and outlet; 12, second inlet and outlet; 13, first valve seat; 14, first valve core; 15, first reset; 16, second valve body; 17, second valve cavity; 18, third inlet and outlet; 19, fourth inlet and outlet; 20, second valve seat; 21, second valve core; 22, second reset; 23, first support seat; 24, first limit ring; 25, first flow channel; 26, second support seat; 27, second limit ring; 28, second flow channel; 29, first guide ring; 30, first guide groove; 31, second guide ring; 32, second guide groove; 33, third guide ring; 34, fourth guide ring; 35, fifth guide ring; 36, fourth guide groove; 37, first sealing element; 38, second sealing element; 39, third sealing element; 40, fourth sealing element; 41, screw; 42, analog tubing hanger. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely 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, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0038] In order to make the above objectives, features and advantages of the present application more apparent and comprehensible, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0039] As Figures 1-6As shown, the present invention discloses a snap-fit ​​device 5, which includes a first joint, a second joint and a fixing assembly. The first joint includes a first valve body 9, a first valve cavity 10 is provided in the first valve body 9, a first valve seat 13, a first valve core 14 and a first reset member 15 are provided in the first valve cavity 10, the first valve core 14 is slidably provided in the first valve cavity 10, and the two ends of the first reset member 15 are respectively against the first valve core 14 and the first valve body 9, and the first reset member 15 applies a first force to the first valve core 14 toward the first valve seat 13; the second joint includes a second valve body 16 A second valve cavity 17 is provided in the second valve body 16, and a second valve seat 20, a second valve core 21 and a second return member 22 are provided in the second valve cavity 17. The second valve core 21 is slidably provided in the second valve cavity 17, and the two ends of the second return member 22 are respectively abutted against the second valve core 21 and the second valve body 16. The second return member 22 applies a second force on the second valve core 21 toward the second valve seat 20; wherein the first valve cavity 10 is used to communicate with the first device, and the second valve cavity 17 is used to communicate with the second device, and the first force and the second force are arranged opposite to each other and have the same magnitude;

[0040] When the fastener 5 is in the docking state, under the external force (the external force can be specifically the force applied by a mechanical device such as a manipulator or an operator to the first joint and / or the second joint), after the first valve core 14 moves a preset distance in the direction of approaching the second valve core 21, the first valve core 14 first abuts against the second valve core 21, and then after the first valve core 14 continues to approach the second valve core 21, the first return member 15 and the second return member 22 are both compressed. Since the first force and the second force are equal, the first valve core 14 moves in the direction away from the first valve seat 13, and the second valve core 21 moves in the direction away from the second valve seat 20, so that the first device is connected to the second device through the first valve cavity 10 and the second valve cavity 17, and then the liquid can flow between the first device and the second device;

[0041] Furthermore, the fastener 5 further includes a fixing assembly. When the fastener 5 is in the docking state, the fixing assembly is used to fix the first joint to the second device and / or fix the second joint to the first device. This improves the stability of the first joint and the second joint when docking, reduces the shaking of the first joint and / or the second joint, and enables the first joint and the second joint to maintain the docking state more stably. This reduces the problem that the first joint and the second joint are prone to shaking under external loads such as wind or water due to the lack of a fixing assembly, which causes impurities such as external dust or seawater to enter the first device and / or the second device, resulting in contamination or corrosion of the first device and / or the second device.

[0042] Further, since the first reset member 15 can exert the first action force on the first valve core 14 towards the first valve seat 13, when the docking device 5 is in the disconnected state, or in the docking state due to accidental disconnection, since the first valve core 14 and the first valve seat 13 are in abutment and form a first sealing pair, the first valve cavity 10 is blocked, reducing the problem of external impurities such as dust or seawater entering the first device from the first valve cavity 10 (the first valve cavity 10 is blocked, which means that it is difficult for external impurities to enter the first device from the first valve cavity 10); similarly, since the second reset member 22 can exert the second action force on the second valve core 21 towards the second valve seat 20, when the docking device 5 is in the disconnected state, the second valve core 21 and the second valve seat 20 are in abutment and form a second sealing pair, which blocks the second valve cavity 17, reducing the problem of external impurities such as dust or seawater entering the second device from the second valve cavity 17 (the second valve cavity 17 is blocked, which means that it is difficult for external impurities to enter the second device from the second valve cavity 17);

[0043] In summary, compared with the prior art without the docking device 5 of the present application, whether the docking device 5 is in the docking state or the disconnected state, the present application reduces the probability of external impurities such as dust or seawater entering the first device and the second device, reduces the fouling and corrosion of the first device and the second device, and reduces the maintenance cost of the first device and the second device.

[0044] Since the first action force and the second action force are oppositely arranged and have the same size, when the first valve core 14 and the second valve core 21 abut, the first sealing pair and the second sealing pair are maintained; but when the first valve core 14 and the second valve core 21 continue to move in the direction of approaching each other under external force (for example, the second joint is fixed, and the external force makes the first valve core 14 move in the direction of approaching the second valve core 21), the first valve core 14 and the second valve core 21 move away from each other until the first valve core 14 is separated from the first valve seat 13 and no longer abuts or abuts with the first valve seat 13, and at the same time, the second valve core 21 is separated from the second valve seat 20 and no longer abuts or abuts with the second valve seat 20, at this time, the distance that the first valve core 14 moves in the direction of approaching the second valve core 21 is the preset distance.

[0045] When the first valve core 14 is located in the first valve cavity 10, i.e. the first valve core 14 does not slide beyond the first valve body 9, and the second valve core 21 is located in the second valve cavity 17, i.e. the second valve core 21 does not slide beyond the second valve body 16, at this time, the first joint second end and the second joint first end are set together, which means that one end of the first joint second end and the second joint first end is a convex end, the other end is a concave end, and they can form a concave-convex plug structure; for example, Figure 1As shown, the second end of the first connector protrudes in a direction away from the first reset member 15, the first end of the second connector is recessed in a direction towards the second reset member 22, and the second end of the first connector cooperates with the first end of the second connector, so that when the buckle is in the connected state, the second end of the first connector can be inserted into the first end of the second connector, and the distance of the first connector inserted into the first end of the second connector is not less than a preset distance; or, the first end of the second connector protrudes in a direction away from the second reset member 22, the second end of the first connector is recessed in a direction towards the first reset member 15, and when the buckle is in the connected state, the second end of the first connector can be inserted into the first end of the second connector, and the distance of the first connector inserted into the first end of the second connector is not less than a preset distance.

[0046] Alternatively, the above structure can also not be used, when the buckle is in the disconnected state, the end of the first valve core 14 away from the first reset member 15 is located outside the first valve body 9, and / or the end of the second valve core 21 away from the second reset member 22 is located outside the second valve body 16; when the buckle is in the connected state, the second end of the first connector abuts against the first end of the second connector, the first valve core 14 and the second valve core 21 abut, and the movement distance of the first valve core 14 in the direction towards the second valve core 21 is not less than a preset distance, so as to ensure that the first device can communicate with the second device through the first valve cavity 10, the second valve cavity 17 and the second device.

[0047] As shown in Figure 1 , Figure 2 , the first end of the first valve body 9 is provided with a first inlet and outlet in communication with the first valve cavity 10 for communicating with the first device, and the second end of the first valve body 9 is provided with a second inlet and outlet in communication with the first valve cavity 10; the first end of the second valve body 16 is provided with a third inlet and outlet in communication with the second valve cavity 17, and the second end of the second valve body 16 is provided with a fourth inlet and outlet for communicating with the second device.

[0048] The adapter 5 can be used in ground or underwater environment according to the working condition requirements, and when the adapter 5 is used in different working conditions, the material of the adapter 5 can be selected to ensure that the adapter 5 can be suitable for the corresponding working condition, for example, when the adapter 5 is used for the docking of the first device and the second device in the underwater environment, the adapter 5 can be made of corrosion-resistant materials such as nickel-based alloy. When the adapter 5 is used to realize the communication between the first storage tank and the first pipeline on the ground, the first inlet and outlet 11 can be communicated with the first pipeline, and the fourth inlet and outlet 19 can be communicated with the first storage tank. When the first storage tank needs to be communicated with the first pipeline, the adapter 5 is switched from the disconnected state to the docking state, so that the first pipeline can be communicated with the first storage tank through the first valve cavity 10 and the second valve cavity 17. At this time, the first device is the first pipeline, and the second device is the first storage tank. Alternatively, the adapter 5 can also be used in underwater environment, for example, when the adapter 5 is used for the docking of the tubing hanger and the hydraulic pipeline 8, the fourth inlet and outlet 19 can be communicated with the corresponding space in the tubing hanger, and the first inlet and outlet 11 can be communicated with the hydraulic pipeline 8. When the tubing hanger needs to be docked with the hydraulic pipeline 8, the adapter 5 is switched from the disconnected state to the docking state, so that the tubing hanger can be communicated with the hydraulic pipeline 8 through the second valve cavity 17 and the first valve cavity 10, so as to perform tubing hanger crossing test, for example, the cleaning liquid can be input into the corresponding space in the tubing hanger through the hydraulic pipeline 8 to perform cleaning operation, or the control liquid such as hydraulic oil can be input to control the corresponding equipment in the tubing hanger to perform related operation. At this time, the tubing hanger crossing test is called tubing hanger hydraulic crossing test. Alternatively, the cable can also be sent into the tubing hanger through the first valve cavity 10 and the second valve cavity 17. At this time, the first device is the tubing hanger, and the second device is the cable. The tubing hanger crossing test is called tubing hanger cable crossing test.

[0049] The first inlet and outlet 11 and the second inlet and outlet 12 can be understood as the positions of the liquid entering and leaving the first valve cavity 10 on the first valve body 9 respectively. Similarly, the third inlet and outlet 18 and the fourth inlet and outlet 19 respectively refer to the positions of the liquid entering and leaving the second valve cavity 17 on the second valve body 16. The first inlet and outlet 11, the second inlet and outlet 12, the third inlet and outlet 18 and the fourth inlet and outlet 19 refer to the first inlet and outlet 11 and the third inlet and outlet 18 as inlets, and the second inlet and outlet 12 and the fourth inlet and outlet 19 as outlets when the liquid in the first device flows from the first valve cavity 10 and the second valve cavity 17 into the second device. Conversely, when the liquid in the second device flows from the second valve cavity 17 and the first valve cavity 10 into the first device, the first inlet and outlet 11 and the third inlet and outlet 18 are outlets, and the second inlet and outlet 12 and the fourth inlet and outlet 19 are inlets.

[0050] When the first valve body 9 and the second valve body 16 are cylindrical structures, the first valve cavity 10 is arranged along the axial direction of the first valve body 9, the first valve core 14 is in sliding fit with the first valve cavity 10 along the axial direction of the first valve body 9, the second valve cavity 17 is arranged along the axial direction of the second valve body 16, and the second valve core 21 is in sliding fit with the second valve cavity 17 along the axial direction of the second valve body 16. At this time, when the docking device 5 is in the docking state, the first action force and the second action force are equal, the first valve core 14 and the second valve core 21 no longer move, the first inlet and outlet 11, the second inlet and outlet 12, the third inlet and outlet 18, and the fourth inlet and outlet 19 are sequentially arranged and communicated from the first joint to the second joint. Moreover, when the docking device 5 is in the docking state, the first valve cavity 10 and the second valve cavity 17 are coaxially arranged, and the first valve core 14 and the second valve core 21 are coaxially arranged, which enables the first valve core 14 to abut against the second valve core 21 and push the other valve core under the action of the first action force or the second action force, thereby avoiding the problem that the first valve core 14 and the second valve core 21 cannot abut against each other due to the different axial arrangements of the first valve core 14 and the second valve core 21, and reducing the problem that the first valve core 14 is pushed out of shape by the second valve core 21 and is blocked in the first valve cavity 10, or the second valve core 21 is pushed out of shape by the first valve core 14 and is blocked in the second valve cavity 17 when the first valve core 14 pushes the second valve core 21 to move or the second valve core 21 pushes the first valve core 14 to move.

[0051] Alternatively, when the first valve body 9 and the second valve body 16 are cylindrical structures, the first valve cavity 10 can not be arranged along the axial direction of the first valve body 9, and the second valve cavity 17 can not be arranged along the axial direction of the second valve body 16. Alternatively, the first valve body 9 and the second valve body 16 can be arranged in other shapes, but it is necessary to ensure that the first valve core 14 and the second valve core 21 can abut against each other, and the first valve core 14 can drive the second valve core 21 to move away from the second valve seat 20 under the action of the first action force, and the second valve core 21 can drive the first valve core 14 to move away from the first valve seat 13 under the action of the second action force. The first valve seat 13 can be a region of the first valve body 9 for abutting against the first valve core 14, and the second valve seat 20 can be a region of the second valve body 16 for abutting against the second valve core 21.

[0052] As shown in Figure 1 the movement stroke of the first valve core 14 is located in the first valve cavity 10, that is, the first valve core 14 does not protrude out of the first valve cavity 10, which reduces the problem that an external object collides with the first valve core 14 and causes the first valve core 14 to be blocked in the first valve cavity 10 and unable to move; and the movement stroke of the second valve core 21 is located in the second valve cavity 17, which enables the second valve core 21 not to protrude out of the second valve cavity 17, thereby reducing the problem that an external object collides with the second valve core 21 and causes the second valve core 21 to be blocked in the first valve cavity 10 and unable to move.

[0053] AsFigure 1 As shown, the first valve core 14 is provided with a first flow channel 25 in the region for abutting the first valve seat 13, and the first inlet and outlet 11 is in communication with the first flow channel 25. Thus, when the first valve core 14 abuts the first valve seat 13, the first valve seat 13 closes the first flow channel 25, so that the first inlet and outlet 11 cannot communicate with the second inlet and outlet 12 through the first flow channel 25. Similarly, the second valve core 21 is provided with a second flow channel 28 in the region for abutting the second valve seat 20, and the fourth inlet and outlet 19 is in communication with the second flow channel 28. When the second valve core 21 abuts the second valve seat 20, the second valve seat 20 closes the second flow channel 28, so that the third inlet and outlet 18 cannot communicate with the fourth inlet and outlet 19 through the second flow channel 28. Figure 1 As shown, the inclination angle of the inclined region of the first valve core 14 is greater than that of the first valve seat 13. Compared with the same inclination angle of the first valve seat 13 and the first valve core 14, this reduces the contact area of the first valve seat 13 and the first valve core 14, increases the force exerted by the first valve core 14 on the first valve seat 13, so that the first valve core 14 can more closely abut on the first valve seat 13, and improves the sealing performance of the first sealing pair. Similarly, the inclination angle of the inclined region of the second valve core 21 is greater than that of the second valve seat 20, which improves the sealing performance of the second sealing pair.

[0054] One end of the first reset member 15 can directly abut against the first valve body 9, or one end of the first reset member 15 can abut against the first valve body 9 through a structure provided in the first valve cavity 10. Similarly, one end of the second reset member 22 can directly abut against the second valve body 16, or one end of the second reset member 22 can abut against the second valve body 16 through a structure provided in the second valve cavity 17. Figure 1As shown, a first support seat 23 is provided in the first valve cavity 10, and the two ends of the first reset member 15 are respectively against the first support seat 23 and the first valve core 14, and the first support seat 23 provides a fulcrum for the first reset member 15 to ensure that the first reset member 15 can apply a first force toward the first valve seat 13 to the first valve core 14; the first support seat 23 is fixedly connected to the first valve body 9, such as welding or bolting, or the first support seat 23 is fixedly connected to the first valve body 9 through a first limiting ring 24, and the first limiting ring 24 is located on the side of the first support seat 23 away from the first reset member 15, and the first limiting ring 24 and the first valve body 9 can be fixedly connected by welding or bolting, and the first limiting ring 24 and the first support seat 23 are fixedly connected by welding or bolting. Similarly, a second support seat 26 is provided within the second valve chamber 17. The ends of the second reset member 22 abut against the second support seat 26 and the second valve core 21, respectively. The second support seat 26 provides a fulcrum for the second reset member 22, ensuring that the second reset member 22 can exert a second force on the second valve core 21 toward the second valve seat 20. The second support seat 26 is fixedly connected to the second valve body 16, such as by welding or bolting. Alternatively, the second support seat 26 is fixedly connected to the second valve body 16 via a second retaining ring 27. The second retaining ring 27 is located on the side of the second support seat 26 away from the second reset member 22. The second retaining ring 27 and the second valve body 16 can be fixedly connected by welding or bolting, and the second retaining ring 27 and the second support seat 26 can be fixedly connected by welding or bolting. The first reset member 15 and the second reset member 22 can be specifically springs or other structures capable of exerting the first and second forces, respectively.

[0055] like Figure 1 As shown, the snap-fit ​​device 5 includes a guide assembly, which includes a first guide member and a second guide member. The first guide member includes the second end of the first valve body 9, and the second end of the first valve body 9 extends in a direction away from the first end of the first valve body 9 to form a first guide ring 29. The second guide member includes the first end of the second valve body 16, and the first end of the second valve body 16 is provided with a first guide groove 30 that cooperates with the first guide ring 29 toward the second end away from the second valve body 16. The first guide groove 30 is opened along the axial direction of the second valve body 16, which enables the first guide ring 29 to be inserted along the first guide groove 30 when the first joint and the second joint are docked, that is, the first guide ring 29 and the first guide groove 30 form a first guide pair to assist the docking of the first joint and the second joint, reducing the problem of the first valve core 14 and the second valve body 16 being abutted, or the second valve core 21 and the first valve body 9 being abutted due to the lack of the first guide ring 29 and the first guide groove 30.

[0056] Furthermore, if Figure 1As shown, the guide assembly further comprises a third guide member and a fourth guide member, the first guide ring 29 is externally provided with a second guide ring 31 extending axially along the first valve body 9, and a second guide groove 32 extending axially along the first valve cavity 10 is formed between the first guide ring 29 and the second guide ring 31, the second guide groove 32 is the third guide member, and the fourth guide member comprises a third guide ring 33 provided externally on the first guide groove 30 and extending axially along the second valve body 16, and the second guide groove 32 and the third guide ring 33 can form a second guide pair, that is, when the first joint and the second joint are connected, the third guide ring 33 can also be inserted into the second guide groove 32 along the second guide groove 32 during the process of inserting the first guide ring 29 into the first guide groove 30 along the second valve body 16, thereby improving the accuracy of the connection between the first valve core 14 and the second valve core 21.

[0057] As shown, Figure 1 When connected to the second device through the second guide ring 31, the second guide ring 31 also belongs to a part of the fixed assembly, specifically, the second guide ring 31 is fixed on the first valve body 9 by means of fasteners such as screws 41, and the end of the second guide ring 31 facing the second device can be threadedly connected or bolted connected with the second device; and the inner diameter of the second guide ring 31 gradually decreases from the second device to the first device, that is, the second guide ring 31 has a "horn shape" structure, which facilitates the connection of the first joint and the second joint together.

[0058] As shown, Figure 1 The guide assembly further comprises a fifth guide member and a sixth guide member, the fifth guide member comprises a fourth guide ring 34 provided on the first valve body 9 and located between the first guide ring 29 and the second guide ring 31, and a third guide groove is formed on the fourth guide ring 34 and extends axially along the first valve body 9, the sixth guide member comprises a fifth guide ring 35 provided on the second valve body 16 and located between the first guide groove 30 and the third guide ring 33 and extending axially along the second valve body 16, and a fourth guide groove 36 is formed on the fifth guide ring 35 and extends axially along the second valve body 16, when the first joint and the second joint are connected, the fourth guide ring 34 and the fifth guide ring 35 can form a third guide pair, so that during the process of inserting the first guide ring 29 into the first guide groove 30 along the second valve body 16 and inserting the third guide ring 33 into the second guide groove 32 along the second guide groove 32, the fourth guide ring 34 is inserted into the fourth guide groove 36, and the fifth guide ring 35 is inserted into the third guide groove; in summary, even if one of the guide pairs is damaged, such as broken, the remaining guide pairs can also be connected, compared with the way of not setting a guide pair or only setting a single guide pair, this improves the accuracy of the connection between the first joint and the second joint, and reduces the problem that the first valve core 14 is stuck in the first valve cavity 10 and cannot move due to the misalignment of the first valve core 14 and the second valve core 21.

[0059] As shown, Figure 1As shown, the buckle 5 further comprises a sealing assembly, the sealing assembly comprises a first sealing unit arranged between the second valve body 16 and the fifth guide ring 35, and a second sealing unit arranged between the first guide ring 29 and the fifth guide ring 35, and the first sealing unit and the second sealing unit each comprise a plurality of sealing structures such as sealing rings. The first sealing unit comprises a first sealing piece 37 and a second sealing piece 38 arranged in sequence from inside to outside, the first sealing piece 37 can be a metal sealing ring with a C-shaped cross section, and the second sealing piece 38 is a non-metal sealing ring with an O-shaped cross section; the second sealing unit comprises a third sealing piece 39 and a fourth sealing piece 40 arranged in sequence from inside to outside, the third sealing piece 39 is a third sealing ring with an M-shaped cross section, and two fourth sealing pieces 40 are arranged in two grooves on the third sealing piece 39, and the fourth sealing piece 40 can be a sealing ring or other sealing structure. Alternatively, the application can also arrange sealing rings between adjacent structures in the above-mentioned guide assembly to improve the sealing performance.

[0060] The tubing hanger hydraulic crossing refers to connecting the hydraulic pipeline 8 with the tubing hanger, so that the oil passage in the tubing hanger can be communicated with the oil outlet channel through the hydraulic pipeline 8; or, by connecting the hydraulic pipeline 8 with the tubing hanger, hydraulic oil is injected into the corresponding equipment in the tubing hanger to control the corresponding equipment to perform related actions; or, by connecting the hydraulic pipeline 8 with the tubing hanger, cleaning agent is injected into the tubing hanger through the hydraulic pipeline 8 to clean the tubing hanger or the corresponding equipment in the tubing hanger. The tubing hanger cable crossing refers to sending the cable into the corresponding position in the tubing hanger and connecting with the corresponding equipment.

[0061] The tubing hanger crossing test is to simulate the connection of the simulation tubing hanger 42 with the simulation hydraulic pipeline 8 through the simulation buckle 5, and to perform simulation experiments such as oil outlet, cleaning, oil injection, or cable sending. According to the state of the first joint and the second joint when they are connected, including horizontal crossing and vertical crossing, the horizontal crossing refers to that the second joint extends along the horizontal direction (the axial direction of the second valve body 16 is arranged along the radial direction of the tubing hanger), and is arranged on the tubing hanger, and when the first joint and the second joint are connected, they are in a horizontal state, and the vertical crossing refers to that the axial direction of the second joint is arranged in parallel along the axial direction of the tubing hanger, and when the first joint and the second joint are connected, the axial direction of the first joint is arranged in parallel along the axial direction of the tubing hanger.

[0062] Further, the present application also discloses a tubing hanger crossing test device, which can perform tubing hanger horizontal crossing test, tubing hanger vertical crossing test, tubing hanger hydraulic crossing test or tubing hanger cable crossing test according to working conditions. The tubing hanger crossing test device comprises a plurality of the above-mentioned splices 5, a simulated tubing hanger 42, and the simulated tubing hanger 42 is used as a first device or a second device. For example, when the simulated tubing hanger 42 is the second device, the second valve body 16 is fixed on the simulated tubing hanger 42 by welding or screw connection, the fourth inlet and outlet 19 is in communication with the corresponding space in the simulated tubing hanger 42, the first device is the hydraulic pipeline 8, the first valve body 9 is fixed on one end of the hydraulic pipeline 8, one end of the hydraulic pipeline 8 is in communication with the first inlet and outlet 11, and the other end of the hydraulic pipeline 8 is in communication with a storage tank storing liquid medium such as hydraulic oil or cleaning fluid, and a delivery pump is arranged on the hydraulic pipeline 8. When the tubing hanger crossing test is needed, the splice 5 is switched from the disconnection state to the docking state, so that the corresponding space in the simulated tubing hanger 42 is in communication with the hydraulic pipeline 8 through the second valve cavity 17 and the first valve cavity 10, so that the delivery pump can input the liquid medium such as hydraulic oil or cleaning fluid in the storage tank into the corresponding space in the simulated tubing hanger 42 through the first valve cavity 10 and the second valve cavity 17, so as to clean or control the corresponding device in the simulated tubing hanger 42; or the cable is manually sent into the simulated tubing hanger 42 through the first valve cavity 10 and the second valve cavity 17 by a mechanical device such as a mechanical hand or an operator, and is connected with the corresponding structure in the simulated tubing hanger 42.

[0063] When the splice 5 is used in the tubing hanger crossing test device, the first joint, the second joint and the hydraulic pipeline 8 are all made in the same proportion as the actual first joint, the second joint and the hydraulic pipeline 8 required by the actual working condition. Therefore, they can also be called simulated first joint, simulated second joint and simulated hydraulic pipeline 8. The difference between the simulated tubing hanger 42 and the real tubing hanger, the hydraulic pipeline 8, the first joint and the second joint is only the difference in weight and volume. For example, the simulated tubing hanger 42 is equivalent to a structure obtained by reducing the real tubing hanger in the same proportion, and the sealing property, strength and other parameters thereof are the same. The weight and volume of the simulated tubing hanger 42 are smaller than those of the real tubing hanger. For example, the weight of the real tubing hanger is about thirty tons, and the weight of the simulated tubing hanger 42 is several thousand catties or even lighter.

[0064] Because the above-mentioned simulated hanger, first joint, second joint, hydraulic pipeline 8 and other structures are all made by reducing the real tubing hanger to the same scale, this makes the operator realize the detection of the sealing of the real tubing hanger crossing test by simulating the experiment on the above-mentioned simulated structure. For example, by camera or naked eye observation, it is judged whether the simulated tubing hanger 42 leaks or not, or a plurality of flow sensors and / or pressure sensors are arranged in communication with the first valve cavity 10 and / or the second valve cavity 17, and by judging the value change of the flow sensor and / or the pressure sensor, it is judged whether the first joint and the second joint leak or block. And because the above-mentioned structure is all made by reducing the real structure to the same scale, this reduces the workload required for transferring and assembling the above-mentioned structure, and makes the tubing hanger crossing test experiment more convenient.

[0065] As shown in Figure 2 The present application is fixed with a plurality of second joints on the simulated tubing hanger 42, the fourth inlet and outlet 19 is in communication with the simulated tubing hanger 42, and a plurality of first joints corresponding to the second joints are integrated on the test disc 1. A plurality of first joints and second joints are arranged to meet the needs of the tubing hanger crossing test experiment; the first joint is integrated on the test disc 1, which makes the transfer and butt joint of the first joint more convenient, and a plurality of first joints and a plurality of butt connectors 5 can be transferred and butt jointed at one time; it should be noted that the distribution mode of the first joint on the test disc 1 should be the same as the distribution mode of the second joint on the tubing hanger, so that when the first valve core 14 of the first joint is aligned with the second valve core 21, the remaining first valve core 14 is also aligned with the corresponding second valve core 21.

[0066] The fixing assembly includes a plurality of first fixing members arranged on the test disc 1. When the tubing hanger crossing test is performed, the required number of second joints are fixed on the simulated tubing hanger 42 by bolts or welding, the fourth inlet and outlet 19 is in communication with the corresponding space on the simulated tubing hanger 42, and the required number of first joints are fixed on the test disc 1 by screws or welding, the first valve body 9 is arranged in the test disc 1, one end of the hydraulic pipeline 8 is in communication with the first inlet and outlet 11, the first inlet and outlet 11 can be in communication with the hydraulic pipeline 8 through the shockproof joint (the shockproof joint 7 can be a joint made of cast iron, which is a prior art and its specific structure will not be described again), and the test disc 1 is fixed on the second equipment by the first fixing member to prevent the first joint from falling off the simulated tubing hanger 42 when the first joint is butt jointed with the second joint. The first fixing member and the first joint are arranged to avoid each other, that is, the setting positions of the first joint and the first fixing member do not interfere with each other, and the functions are not interfered with each other.

[0067] The first fixing member includes a first connecting section and a second connecting section connected together. The first connecting section is used to be fixedly connected with the test disc 1. When the counter 5 is in the docking state, the second connecting section is located at the end of the first valve body 9 away from the test disc 1. The second connecting section is used to be connected with the simulated tubing hanger 42. The movement stroke of the second connecting section towards the simulated tubing hanger 42 is not less than the distance between the first valve core 14 and the second valve core 21. In this embodiment, the second connecting section is located at the end of the first valve body 9 away from the test disc 1. This means that, compared with the first valve core 14, the second connecting section is closer to the simulated tubing hanger 42. The first connecting section and the second connecting section are arranged in parallel with the first valve body 9. This means that, before the first valve core 14 abuts against the second valve core 21, the second connecting section can be pre-connected with the corresponding position on the simulated tubing hanger 42 (the pre-connection means that the second connecting section is connected with the simulated tubing hanger 42 before the first valve core 14 abuts against the second valve core 21). If it is found that the movement of the second connecting section towards the simulated tubing hanger 42 is blocked, it indicates that the second connecting section may not be aligned with the corresponding position on the simulated tubing hanger 42. The angle of the test disc 1 and the second connecting section needs to be adjusted until the second connecting section can move smoothly towards the simulated tubing hanger 42. This indicates that the first valve core 14 is also aligned with the second valve core 21.

[0068] The movement stroke of the second connecting section towards the simulated tubing hanger 42 is not less than the distance between the first valve core 14 and the second valve core 21. This means that, at least before the second connecting section moves to the limit position towards the simulated tubing hanger 42, i.e. before the second connecting section cannot move towards the simulated tubing hanger 42, the first valve core 14 has abutted against the second valve core 21. Then, the counter 5 can be switched to the docking state smoothly.

[0069] In this embodiment, the first fixing member specifically includes a connecting rod. The connecting rod includes a first connecting section and a second connecting section connected together. The first connecting section can be a light rod and is bonded, welded or connected together with the test disc 1 through a screw. The second connecting section is a threaded section. The area on the simulated tubing hanger 42 connected with the second connecting section is a threaded hole reserved on the simulated tubing hanger 42.

[0070] Alternatively, the first fixing member can also not adopt the above structure. For example, Figure 4 , Figure 2As shown, the first fixing member comprises a first nut 3, a bolt 2, and a plurality of second nuts 4. The test disc 1 is provided with a first threaded hole for threaded connection with the first nut 3. The first end of the first nut 3 is threaded connected with the first threaded hole, and the second end of the first nut 3 has a diameter larger than that of the first threaded hole. At this time, the first connecting section is the region where the first nut 3 is connected with the first threaded hole, and the second connecting section is the region where the first end of the bolt 2 extends out of the first nut 3. The simulated tubing hanger 42 is provided with a threaded hole for threaded connection with the first end of the bolt 2. When the first fixing member needs to be assembled on the test disc 1, the first end of the first nut 3 is first threaded connected with the first threaded hole, and then the first nut 3 is turned over the first threaded hole until the second end of the first nut 3 abuts against the test disc 1. Then, a plurality of second nuts 4 are threaded connected on the first end of the first nut 3, and the second nuts 4 are moved towards the test disc 1 until the second nut 4 closest to the test disc 1 abuts against the test disc 1, and the adjacent second nuts 4 abut against each other. Then, the bolt 2 is inserted into the first nut 3, and the bolt 2 is threaded connected with the first nut 3. The bolt 2 is turned so that the first end of the bolt 2 passes through the first nut 3 and reaches a position closer to the simulated tubing hanger 42 than the first valve body 9. The second end of the bolt 2 has a diameter larger than the inner diameter of the first nut 3, so as to prevent the second end of the bolt 2 from turning out of the first nut 3. Then, the test disc 1 is moved towards the simulated tubing hanger 42 by a mechanical device such as a mechanical hand until the first end of the bolt 2 is aligned with the threaded hole on the simulated tubing hanger 42, and the first valve core 14 and the second valve core 21 are aligned.

[0071] In the present embodiment, the first end of the first nut 3 refers to the end of the first end of the first nut 3, and the region close to the first end of the first nut 3. Similarly, the second end of the first nut 3 refers to the end of the second end of the first nut 3, and the region close to the second end of the first nut 3. The first end of the bolt 2 refers to the end of the first end of the bolt 2, and the region close to the first end of the bolt 2. The second end of the bolt 2 refers to the end of the second end of the bolt 2, and the region close to the second end of the bolt 2.

[0072] Subsequently, the first end of the bolt 2 is fixed on the threaded hole reserved on the simulated tubing hanger 42, and then the first nut 3 is rotated in the first direction (the first direction is the direction in which the rotation of the first nut 3 can move the test disc 1 towards the simulated tubing hanger 42, which can be the clockwise direction), thereby driving the test disc 1 and the first valve core 14 to move towards the simulated tubing hanger 42 (at this time, the first end of the bolt 2 has been threadedly connected with the threaded hole, and the second end of the first nut 3 limits the test disc 1, so that the rotation of the first nut 3 can move towards the simulated tubing hanger 42 and drive the test disc 1 to move in the same direction), until the first valve core 14 abuts against the second valve core 21, and the splicing device 5 is switched from the disconnected state to the connected state; when the splicing device 5 needs to be switched from the connected state to the disconnected state, the first nut 3 is rotated in the second direction, i.e., the opposite direction of the first direction (the second direction can be the counterclockwise direction), at this time, the first end of the bolt 2 is still threadedly connected with the threaded hole, so when the first nut 3 is rotated in the second direction, the first nut 3 will move away from the simulated tubing hanger 42, and the second nut 4 is connected with the first nut 3 and abuts against the test disc 1, so when the first nut 3 moves away from the simulated tubing hanger 42, the second nut 4 can exert a force on the test disc 1 in the direction away from the simulated tubing hanger 42, so that the test disc 1 and the first valve core 14 move away from the simulated tubing hanger 42, and after the first valve core 14 is separated from the second valve core 21, the bolt 2 is rotated to separate the bolt 2 from the threaded hole on the simulated tubing hanger 42, the first fixing member is separated from the simulated tubing hanger 42, and the splicing device 5 is switched to the disconnected state; wherein the first nut 3 is rotated by a mechanical hand or an operator through a hydraulic torque wrench.

[0073] The test disc 1 is connected with a support frame 6 through screws or bolts or welding, the support frame 6 can serve as a handle for fixing the test disc 1 on the simulated tubing hanger 42 and disassembling the test disc 1 from the simulated tubing hanger 42, so as to facilitate the operator or the mechanical hand or other mechanical equipment to disassemble and assemble the test disc 1 and the first joint. Figure 4 、 ​ As shown in the drawings, the cross section of the support frame 6 is in the shape of a letter n.

[0074] In this document, several means refer to at least one. In this document and / or the content located in front of and / or behind the content can exist simultaneously, or can exist separately, for example, A and / or B include only A or B, and A and B exist simultaneously. This application discloses multiple technical solutions, but there is no opposite technical inspiration.

[0075] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A buckle device, characterized in that: The snap fastener includes a first joint, a second joint and a fixing assembly: The first joint includes a first valve body, a first valve cavity is provided in the first valve body, a first valve seat, a first valve core and a first return member are provided in the first valve cavity, the first valve core is slidably provided in the first valve cavity, two ends of the first return member are respectively abutted against the first valve core and the first valve body, and the first return member applies a first force to the first valve core toward the first valve seat; The second joint includes a second valve body, a second valve cavity is provided in the second valve body, a second valve seat, a second valve core and a second return member are provided in the second valve cavity, two ends of the second return member are respectively abutted against the second valve core and the second valve body, the second valve core is slidably provided in the second valve cavity, and the second return member applies a second force on the second valve core toward the second valve seat; Wherein, the first valve cavity is used to communicate with a first device, and the second valve cavity is used to communicate with a second device; the first acting force and the second acting force are arranged opposite to each other and are equal; When the snap-fit ​​device is in a disconnected state, the first valve core and the first valve seat form a first sealing pair, and the second valve core and the second valve seat form a second sealing pair; When the snap-fit ​​device is in a docking state, the first connector moves a preset distance toward the second connector under the action of external force, so that the first valve core and the second valve core offset each other, and the first device is connected to the second device through the first valve cavity, and the second valve cavity is connected to the second device; the fixing assembly is used to fix the first connector to the second device, and / or to fix the second connector to the first device.

2. The buckle according to claim 1, characterized in that: The first valve core is located in the first valve cavity, the second valve core is located in the second valve cavity, and when the snap-fit ​​device is in the docking state, the second end of the first connector and the first end of the second connector are sleeved together; And / or, when the snap-fit ​​device is in the docking state, the second end of the first connector and the first end of the second connector are abutted against each other; when the snap-fit ​​device is in the disconnected state, the end of the first valve core away from the first reset member is located outside the second end of the first connector, and / or the end of the second valve core away from the second reset member is located outside the first end of the second connector.

3. The buckle according to claim 1, characterized in that: When the snap-fit ​​device is in the docking state, the first valve cavity and the second valve cavity are coaxially arranged, and the first valve core and the second valve core are coaxially arranged.

4. The buckle according to claim 1, characterized in that: The snap-fit ​​device includes a guide assembly, and the guide assembly includes a first guide member and a second guide member. The first guide member includes the second end of the first valve body, and the second end of the first valve body forms a first guide ring. The second guide member includes the first end of the second valve body, and the first end of the second valve body is provided with a first guide groove that can form a first guide pair with the first guide ring.

5. The buckle according to claim 4, characterized in that: The guide assembly also includes a third guide member and a fourth guide member. A second guide ring is provided on the outside of the first guide ring. The third guide member includes a second guide groove provided between the first guide ring and the second guide ring. The fourth guide member includes a third guide ring provided on the outside of the first guide groove. The second guide groove can form a second guide pair with the third guide ring.

6. The buckle according to claim 5, characterized in that: The guide assembly also includes a fifth guide member and a sixth guide member. The fifth guide member includes a fourth guide ring arranged between the first guide ring and the second guide ring. The sixth guide member includes a fifth guide ring arranged between the first guide groove and the third guide ring. The fourth guide ring and the fifth guide ring can form a third guide pair.

7. The buckle according to claim 6, characterized in that: The snap-fit ​​device further includes a sealing assembly, which includes a first sealing unit arranged between the second valve body and the fifth guide ring, and a second sealing unit arranged between the first guide ring and the fifth guide ring.

8. A tubing hanger crossing test device, characterized in that: The tubing hanger crossing test device includes several fasteners according to any one of claims 1 to 7, and a simulated tubing hanger, and the simulated tubing hanger is the first device or the second device.

9. The tubing hanger crossing test device according to claim 8, characterized in that: The simulated tubing hanger is the second device, the second valve body is fixed on the simulated tubing hanger, and the first valve body is fixed on the test disc; The fixing assembly includes a first fixing member. When the fastener is in the docking state, the first fixing member is used to fix the test disc on the simulated tubing hanger.

10. The tubing hanger crossing test device according to claim 9, characterized in that: The first fixing member includes a first connecting section and a second connecting section that are connected to each other. The first connecting section is used to be fixedly connected to the test disk. When the fastener is in the docking state, the second connecting section is located at an end of the first valve body away from the test disk. The second connecting section is used to be connected to the simulated oil tubing hanger, and the movement stroke of the second connecting section toward the simulated oil tubing hanger is not less than the distance between the first valve core and the second valve core.

Images