Rotary blowout preventer with throttling control function

Abstract

The utility model relates to the technical field of drilling and completion pressure control, in particular to a rotary blowout preventer with a throttling control function, which comprises a rotary blowout preventer assembly, a multi-way connector and a throttling control module. The rotary blowout preventer assembly comprises a shell and a rotary sealing assembly, a main through hole, two side wing outlets and a straight-through outlet are formed in the shell, the rotary sealing assembly is arranged in the main through hole, and a straight-through block valve is arranged at the straight-through outlet; the number of the throttling control modules is two, and the two throttling control modules are connected with the two side wing outlets and the multi-way connector correspondingly and extend upwards in the direction of the main through hole. The two throttling control modules are integrated on the rotary blowout preventer assembly and extend upwards in the direction of the main through hole, that is, the space occupied by the throttling control modules in the horizontal direction of the rotary blowout preventer assembly is small, and the main occupied space extends upwards in the direction of the main through hole. Therefore, the whole rotary blowout preventer with the throttling control function is small in occupied space and compact in structure.

Description

Technical Field

[0001] This utility model relates to the technical field of drilling and completion pressure control, and specifically to a rotary blowout preventer with throttling control function. Background Technology

[0002] Refined pressure control technology can effectively prevent and control complex accidents in oil drilling and completion, significantly reducing non-productive time and shortening the drilling cycle. Key equipment for this technology generally includes a rotary blowout preventer (BOP), control manifold, and metering devices. Current technology installs the BOP at the wellhead, while the control manifold and metering devices are located on the ground at a considerable distance. Each key piece of equipment functions relatively independently, connected by long high-pressure pipelines, resulting in low system integration, complex on-site layout, long installation and commissioning cycles, high costs, and difficult maintenance. Utility Model Content

[0003] This invention addresses one of the problems in the prior art by providing a rotary blowout preventer with throttling control function. 。

[0004] The technical solution is as follows:

[0005] A rotary blowout preventer with throttling control function includes a rotary blowout preventer assembly, a multi-port connector, and a throttling control module;

[0006] The rotary blowout preventer assembly includes a housing and a rotary seal assembly. The housing has a main through-hole, two side wing outlets and a straight outlet. The rotary seal assembly is disposed in the main through-hole, and a straight shut-off valve is disposed at the straight outlet.

[0007] The throttling control module includes two modules: a first throttling control module and a second throttling control module. The two side outlets are a first side outlet and a second side outlet, respectively. The first throttling control module is connected to the first side outlet and the multi-port connector, and the second throttling control module is connected to the second side outlet and the multi-port connector. The throttling control module extends upward in the direction of the main through hole.

[0008] The working principle and beneficial effects of this utility model are as follows: The throttling control modules are connected to the two side outlets and the multi-port connector, respectively, and extend upwards towards the main through-hole. That is, the two throttling control modules are integrated on the rotary blowout preventer assembly and extend upwards towards the main through-hole. This means the throttling modules occupy less space in the horizontal direction of the rotary blowout preventer assembly, with the main space occupied extending upwards towards the main through-hole. This results in a smaller overall size and more compact structure for the rotary blowout preventer with throttling control function. Furthermore, by setting two symmetrical throttling control modules, if one throttling control module malfunctions, the other can be switched on, ensuring uninterrupted drilling operations. Simultaneously, if the flow capacity of a single throttling control module is insufficient, both throttling channels operate simultaneously to ensure normal operation.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the multi-port connector has a first interface, a second interface, and a third interface, the first interface being connected to the straight-through outlet, and the straight-through shut-off valve being disposed at the first interface end;

[0011] The first throttling control module includes a first side wing shut-off valve, a second side wing shut-off valve, and a first side wing throttling valve. The first side wing outlet, the first side wing shut-off valve, the first side wing throttling valve, the second side wing shut-off valve, and the second interface are connected in sequence, and the first side wing throttling valve extends upward toward the main through hole.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the first side wing shut-off valve, the first side wing throttle valve, the second side wing shut-off valve and the second interface are connected in sequence, and the first side wing throttle valve extends upward in the direction of the main through hole; that is, the two shut-off valves of the first throttle control module are arranged in the lower position, and the throttle valve is arranged in the upper position. The layout of each component is reasonable and meets the requirements of the standard.

[0013] Based on the above technical solution, the present invention can be further improved as follows.

[0014] Furthermore, the second throttling control module includes a third side wing shut-off valve, a fourth side wing shut-off valve, and a second side wing throttling valve. The second side wing outlet, the third side wing shut-off valve, the second side wing throttling valve, the fourth side wing shut-off valve, and the third interface are connected in sequence, and the second side wing throttling valve extends upward toward the main through hole.

[0015] The beneficial effects of adopting the above-mentioned further solution are as follows: Similarly, the two shut-off valves of the second throttling control module are arranged in the lower position, and the throttling valve is arranged in the upper position. The layout of each component is reasonable and meets the requirements of the standard.

[0016] Based on the above technical solution, the present invention can be further improved as follows.

[0017] Furthermore, the first side wing shut-off valve, the second side wing shut-off valve, and the first side wing throttle valve all have right-angle flow channels.

[0018] The beneficial effects of adopting the above-mentioned further solution are: by setting the above-mentioned components to right-angle flow channels, that is, there is no need to set right-angle connectors, the first throttling control module can be extended upward in the direction of the main through hole as a whole, which simplifies the structure, reduces the number of components, and improves reliability.

[0019] Based on the above technical solution, the present invention can be further improved as follows.

[0020] Furthermore, the third wing shut-off valve, the fourth wing shut-off valve, and the second wing throttle valve all have right-angle flow channels.

[0021] The beneficial effects of adopting the above-mentioned further solution are as follows: Similarly, by setting the above-mentioned components to right-angle flow channels, that is, by eliminating the need to set right-angle connectors, the second throttling control module can be extended upward in the direction of the main through hole as a whole. The structure is simple, the number of components is reduced, and the reliability is higher.

[0022] Based on the above technical solution, the present invention can be further improved as follows.

[0023] Furthermore, the first side wing shut-off valve and the second side wing shut-off valve are arranged facing each other, and a throttling dual-output actuator is provided between the first side wing shut-off valve and the second side wing shut-off valve to drive the first side wing shut-off valve and the second side wing shut-off valve to be in the same open and closed state.

[0024] The advantages of adopting the above-mentioned further solution are: the first side wing shut-off valve and the second side wing shut-off valve are arranged facing each other, that is, the control ends of the two valve cores are set facing each other, which facilitates the installation of the actuator, and the actuator will not occupy the external space of the entire first throttling control module; at the same time, by driving the first side wing shut-off valve and the second side wing shut-off valve to be in the same open and closed state through the throttling dual-output actuator, the function of controlling two shut-off valves with a single actuator is realized, reducing product components and improving control efficiency.

[0025] Based on the above technical solution, the present invention can be further improved as follows.

[0026] Furthermore, the third wing shut-off valve and the fourth wing shut-off valve are arranged facing each other, and a throttling dual-output actuator is provided between the third wing shut-off valve and the fourth wing shut-off valve to drive the third wing shut-off valve and the fourth wing shut-off valve to be in a state of simultaneous opening and closing.

[0027] The beneficial effects of adopting the above-mentioned further solution are as follows: Similarly, the third and fourth side wing shut-off valves are arranged facing each other, that is, the control ends of the two valve cores are set facing each other, which facilitates the installation of the actuator, and the actuator does not occupy the external space of the entire second throttling control module; at the same time, by driving the third and fourth side wing shut-off valves to be in the same open and closed state through the throttling dual-output actuator, the function of controlling two shut-off valves with a single actuator is realized, reducing product components and improving control efficiency.

[0028] Based on the above technical solution, the present invention can be further improved as follows.

[0029] Furthermore, a filter element is provided in the flow channel at the outlet end of the first side wing shut-off valve.

[0030] The beneficial effect of adopting the above-mentioned further solution is that by installing a filter element before the throttle valve, large solid particles can be effectively prevented from clogging the throttle valve and causing pressure fluctuations.

[0031] Based on the above technical solution, the present invention can be further improved as follows.

[0032] Furthermore, a filter element is provided in the flow channel at the outlet end of the third side wing shut-off valve.

[0033] The beneficial effect of adopting the above-mentioned further solution is that by installing a filter element before the throttle valve, large solid particles can be effectively prevented from clogging the throttle valve and causing pressure fluctuations.

[0034] Based on the above technical solution, the present invention can be further improved as follows.

[0035] Furthermore, it also includes a flow detection module, and the multi-port connector also has a fourth interface, with the flow detection module disposed at the fourth interface end and connected to the multi-port connector.

[0036] The beneficial effect of adopting the above-mentioned further solution is that by setting a flow detection module, that is, integrating a flow detection module into the rotary blowout preventer with throttling control function, flow detection is realized.

[0037] Based on the above technical solution, the present invention can be further improved as follows.

[0038] Furthermore, the flow detection module includes a flow meter, a first flow shut-off valve, and a second flow shut-off valve; the flow meter is arranged to extend upward in the direction of the main through hole, and the first flow shut-off valve and the second flow shut-off valve are respectively arranged at both ends of the flow meter and communicate with the flow meter; the inlet of the flow meter is a flow detection input interface, which is arranged at the fourth interface end; the outlet of the second flow shut-off valve is a flow detection output interface.

[0039] The beneficial effect of adopting the above-mentioned further solution is that by setting the flow meter to extend upward in the direction of the main through hole, that is, by integrating the entire flow detection module into the rotary blowout preventer assembly and extending upward in the direction of the main through hole, the flow detection module occupies less space in the horizontal direction of the rotary blowout preventer assembly, and the main space occupied is extended upward in the direction of the main through hole, thereby making the entire rotary blowout preventer with throttling control function occupy less space and have a compact structure.

[0040] Based on the above technical solution, the present invention can be further improved as follows.

[0041] Furthermore, the first flow shut-off valve and the second flow shut-off valve are arranged facing each other, and a flow dual-output actuator is provided between the first flow shut-off valve and the second flow shut-off valve to drive the first flow shut-off valve and the second flow shut-off valve to be in an open and closed state respectively.

[0042] The beneficial effects of adopting the above-mentioned further solution are: by driving the first flow shut-off valve and the second flow shut-off valve to be in an open and closed state by a flow dual-output actuator, the function of controlling two shut-off valves with a single actuator is realized, reducing product components and improving control efficiency. Attached Figure Description

[0043] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of the rotary blowout preventer with throttling control function of this utility model;

[0044] Figure 2 This is a top view of Embodiment 1 in the first direction;

[0045] Figure 3 This is a cross-sectional view in the second direction of Embodiment 1;

[0046] Figure 4 This is a cross-sectional view of Embodiment 1 from a third-party perspective;

[0047] Figure 5 This is a partial cross-sectional view of the throttling module in Embodiment 1;

[0048] Figure 6 This is a schematic diagram of the three-dimensional structure of the rotary blowout preventer in Embodiment 1;

[0049] Figure 7 This is a cross-sectional view of the shell in Embodiment 1;

[0050] Figure 8 This is a cross-sectional view of the rotary seal assembly in Embodiment 1;

[0051] Figure 9 This is a cross-sectional view of the rotary blowout preventer assembly in Embodiment 1;

[0052] Figure 10 yes Figure 9 A partial schematic diagram of point A in the middle;

[0053] Figure 11 yes Figure 9 A partial schematic diagram at point B in the middle;

[0054] Figure 12 This is a three-dimensional structural schematic diagram of Embodiment 2 of a rotary blowout preventer with throttling control function;

[0055] Figure 13 This is a cross-sectional view in the first direction of Embodiment 2;

[0056] Figure 14 This is a flowchart of the first working state of Embodiment 1;

[0057] Figure 15 This is a flowchart of the second working state of Embodiment 1;

[0058] Figure 16 This is the flowchart of the third working state in Embodiment 1;

[0059] Figure 17 This is a flowchart of the first working state of Embodiment 2;

[0060] Figure 18 This is a flowchart of the second working state of Embodiment 2;

[0061] Figure 19 This is the flowchart of the third working state in Example 2.

[0062] The attached diagram lists the components represented by each number as follows:

[0063] 1. Rotary Blowout Preventer Assembly; 11. Housing; 12. Rotary Seal Assembly; 13. First Side Outlet; 14. Second Side Outlet; 15. Straight-through Outlet; 16. Control Box; 2. Multi-port Connector; 21. First Interface; 22. Second Interface; 23. Third Interface; 24. Fourth Interface; 25. Straight-through Shut-off Valve; 31. First Side Shut-off Valve; 32. First Side Throttling Valve; 33. First Right-angle Connector; 34. Second Side Shut-off Valve; 35. Throttling Dual-output Actuator 36. Second side wing throttle valve, 37. Fourth side wing shut-off valve, 38. Third side wing shut-off valve, 39. Filter element, 4. Clamping mechanism, 41. Single output actuator, 42. Pinion, 43. Turntable gear, 44. Bevel gear, 45. Conical gear, 46. Clamping element, 47. Second bearing, 51. Flow meter, 52. First flow shut-off valve, 53. Second flow shut-off valve, 54. Flow dual output actuator, 55. Second right angle connector, 56. T-connector. Detailed Implementation

[0064] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0065] A schematic diagram of Embodiment 1 of the rotary blowout preventer with throttling control function of this utility model is shown below. Figures 1 to 11 .

[0066] A rotary blowout preventer with throttling control function includes a rotary blowout preventer assembly 1, a multi-port connector 2, and a throttling control module. The rotary blowout preventer assembly 1 includes a housing 11 and a rotary seal assembly 12. The housing 11 has a main through-hole, two side outlets, and a straight-through outlet 15. The rotary seal assembly 12 is disposed within the main through-hole, and a straight-through shut-off valve 25 is provided at the straight-through outlet 15. Two throttling control modules are included, each connected to one of the two side outlets and the multi-port connector 2, and extending upwards towards the main through-hole. Figure 1 It extends vertically upwards as shown.

[0067] In this embodiment, the multi-port connector 2 has a first interface 21, a second interface 22, and a third interface 23. The first interface 21 is connected to the straight-through outlet 15, and the straight-through shut-off valve 25 is disposed at the end of the first interface 21. The two side wing outlets are the first side wing outlet 13 and the second side wing outlet 14, respectively. The throttling control module includes a first throttling control module and a second throttling control module. The first throttling control module includes a first side wing shut-off valve 31, a second side wing shut-off valve 34, and a first side wing throttling valve 32. The first side wing outlet 13, the first side wing shut-off valve 31, the first side wing throttling valve 32, the second side wing shut-off valve 34, and the second interface 22 are connected in sequence, and the first side wing throttling valve 32 extends upward in the direction of the main through hole.

[0068] The second throttling control module includes a third side wing shut-off valve 38, a fourth side wing shut-off valve 37, and a second side wing throttling valve 36. The second side wing outlet 14, the third side wing shut-off valve 38, the second side wing throttling valve 36, the fourth side wing shut-off valve 37, and the third interface 23 are connected in sequence, and the second side wing throttling valve 36 extends upward in the direction of the main through hole.

[0069] like Figure 1 As shown, a control box 16 for controlling the blowout preventer is provided on the side opposite to the multi-port connector 2 on the housing 11. That is, the control box 16 is equipped with a control module. The control module is electrically connected to the throttling control module, the straight-through shut-off valve 25 and the single-output actuator 41. That is, the control module controls the opening and closing of each valve in the throttling control module, controls the opening and closing of the straight-through shut-off valve 25, and controls the single-output actuator 41 to perform clamping or opening operations on the clamping mechanism on the rotary blowout preventer with throttling control function.

[0070] In this embodiment, two throttling control modules are integrated on both sides of the rotary blowout preventer assembly 1 and extend upward in the direction of the main through hole. That is, the throttling module occupies less space in the horizontal direction of the rotary blowout preventer assembly 1, and the main space it occupies extends upward in the direction of the main through hole. As a result, the entire rotary blowout preventer with throttling control function occupies less space and has a compact structure.

[0071] like Figure 3 and Figure 5 As shown, the first wing shut-off valve 31, the second wing shut-off valve 34 and the first wing throttle valve 32 all have right-angle flow channels; the third wing shut-off valve 38, the fourth wing shut-off valve 37 and the second wing throttle valve 36 all have right-angle flow channels.

[0072] Specifically, for the first throttling control module, the first side wing outlet 13 is connected to the input port of the first side wing shut-off valve 31, the output port of the first side wing shut-off valve 31 is connected to the input port of the first side wing throttling valve 32, the output port of the first side wing throttling valve 32 is connected to the input port of the second side wing shut-off valve 34 through the first right-angle connector 33, and the output port of the second side wing shut-off valve 34 is connected to the second interface 22.

[0073] For the second throttling control module, the second side wing outlet 14 is connected to the input port of the third side wing shut-off valve 38, the output port of the third side wing shut-off valve 38 is connected to the input port of the second side wing throttling valve 36, the output port of the second side wing throttling valve 36 is connected to the input port of the fourth side wing shut-off valve 37 through the first right-angle connector 33, and the output port of the fourth side wing shut-off valve 37 is connected to the third interface 23.

[0074] like Figure 2 and Figure 4As shown, the first side-wing shut-off valve 31 and the second side-wing shut-off valve 34 are arranged facing each other. A throttling dual-output actuator 35 is provided between the first side-wing shut-off valve 31 and the second side-wing shut-off valve 34 to drive the first side-wing shut-off valve 31 and the second side-wing shut-off valve 34 to be in a simultaneous open and closed state. The third side-wing shut-off valve 38 and the fourth side-wing shut-off valve 37 are arranged facing each other. A throttling dual-output actuator 35 is provided between the third side-wing shut-off valve 38 and the fourth side-wing shut-off valve 37 to drive the third side-wing shut-off valve 38 and the fourth side-wing shut-off valve 37 to be in a simultaneous open and closed state.

[0075] Specifically, the valve core of the first wing shut-off valve 31 is located at its input end, and the valve core of the second wing shut-off valve 34 is located at its output end. The two valve cores are positioned facing each other. This arrangement facilitates the throttling dual-output actuator 35 to drive the first wing shut-off valve 31 and the second wing shut-off valve 34 to be simultaneously open and closed. Similarly, the valve core of the third wing shut-off valve 38 is located at its input end, and the valve core of the fourth wing shut-off valve 37 is located at its output end. The two valve cores are positioned facing each other. This arrangement facilitates the throttling dual-output actuator 35 to drive the third wing shut-off valve 38 and the fourth wing shut-off valve 37 to be simultaneously open and closed. The above structure enables a single actuator to control two shut-off valves, reducing product components and improving control efficiency.

[0076] In this embodiment, both dual-output actuators are electrically driven structures. A manual drive mechanism can also be added to ensure that the system can operate normally through the manual mechanism in the event of failure or malfunction of the electrically driven structure.

[0077] like Figure 3 As shown, filter elements 39 are provided in the flow channels of both the outlet end of the first side wing shut-off valve 31 and the outlet end of the third side wing shut-off valve 38. By installing filter elements 39 before the throttle valve, large solid particles can be effectively prevented from clogging the throttle valve and causing pressure fluctuations.

[0078] In this embodiment, the two side throttle valves are configured as electrically driven structures. Similarly, a manual drive mechanism can also be provided to ensure that the system can operate normally through the manual mechanism in the event of failure or malfunction of the electrically driven structure.

[0079] like Figure 3 , Figures 7 to 11 As shown, the rotary blowout preventer with throttling control function in this embodiment also includes a clamping mechanism 4 for clamping the rotary seal assembly 12. The clamping mechanism 4 is disposed on the housing 11. The clamping mechanism 4 includes a clamping member 46 and a driving mechanism. The driving mechanism is used to drive the clamping member 46 to extend out of the inner surface of the housing 11 or retract into the housing 11.

[0080] The drive mechanism includes a single-output actuator 41 and a transmission mechanism. The transmission mechanism includes a pinion 42, a turntable gear 43, and a bevel gear 45. The output shaft of the single-output actuator 41 is fixedly connected to the pinion 42. The turntable gear 43 is sleeved on the outside of the housing 11. The outside of the turntable gear 43 is provided with an external gear that is connected to the pinion 42. The top of the turntable gear 43 is provided with a bevel gear 44 that is connected to several bevel gears 45. The bevel gears 45 are connected to the clamping member 46 in a helical transmission.

[0081] In this embodiment, a first bearing is fixedly mounted on the housing 11, the inner ring of the first bearing is fixedly connected to the housing 11, and the outer ring of the first bearing is a turntable gear 43. Figure 10 As shown, the inner ring of the bearing is fixedly mounted on the housing 11, and the outer ring of the bearing is a turntable gear 43. In this embodiment, the turntable gear 43 and the bevel gear 44 are two components. During installation, the bevel gear 44 is fixed to the turntable gear 43. Figure 10 As shown directly above. In a specific embodiment, the turntable gear 43 and the bevel gear 44 can also be set as an integral structure of the same component, that is, the bevel gear 44 can be directly set above the turntable gear 43. In this embodiment, the turntable gear 43 is a full circle of gears set on the outer surface of the bearing outer ring to realize the meshing transmission between the pinion 42 and the turntable gear 43.

[0082] like Figure 11 As shown, one end of the clamping member 46 is provided with an external thread, and the bevel gear 45 is provided with an internal thread and is fixedly connected to the housing 11 through the second bearing 47. The external thread and the internal thread are screwed together for a helical drive connection. The other end of the clamping member 46 ( Figure 11 The left end of the clamping member 46 passes through the housing 11 and is slidably connected to it. The other end of the clamping member 46 is set as a polygonal structure. The housing 11 corresponding to it is also provided with a polygonal through hole for the clamping member 46 to pass through. The clamping member 46 is in a clamping state on the rotary sealing assembly.

[0083] In this embodiment, Figure 11 The clamping element 46 and its cooperating second bearing 47 are arranged in a four-equal-distribution structure, which achieves balanced clamping force of the clamping element 46 on the rotary seal assembly and improves the reliability of clamping. In a specific embodiment, the clamping element 46 can be set in a larger number to meet the requirements according to the actual well control conditions.

[0084] In this embodiment, the working process of the clamping mechanism 4 is as follows: Before the rotary sealing assembly 12 is inserted, the clamping member 46 is located in the housing 11 and will not protrude from the inner surface of the main through hole; the rotary sealing assembly 12 is inserted into the housing 11 from above the main through hole. When it reaches the set position, the single output actuator 41 is controlled to drive the pinion 42 connected to the output end of the single output actuator 41 to rotate. The pinion 42 is driven by the turntable gear 43, which drives the bevel gear 44 to rotate. The bevel gear 44 drives the four bevel gears 45 to rotate. When the bevel gears 45 rotate, the clamping member 46, which is threaded to them, will be engaged with the main through hole. Figure 11 The relative movement occurs in the horizontal direction as shown. Since the bevel gear 45 is fixed to the housing 11 by the second bearing 47, the bevel gear 45 moves in... Figure 11 Since the rotary seal assembly 12 does not move horizontally, the clamping member 46 will move towards the center of the housing 11, thereby pressing the rotary seal assembly 12 downward along the axial direction of the housing 11. When it is necessary to remove the rotary seal assembly 12, the single-output actuator 41 is controlled to retract the clamping member 46 into the housing 11.

[0085] See the flowchart of the first working state in this embodiment. Figure 14 This is a flowchart illustrating throttling control via a rotary blowout preventer with throttling function. During throttling operation, the direct-acting shut-off valve 25 is closed, while only the first side-wing shut-off valve 31 and the second side-wing shut-off valve 34 are open. The fluid flow direction in the flow channel is as follows: Figure 14 As indicated by the middle arrow, fluid throttling control is achieved by controlling the first side wing throttle valve 32. That is, in this embodiment, fluid throttling control is performed through one throttling control channel, while the other channel serves as a backup.

[0086] See the flowchart for the second working state in this embodiment. Figure 15 This is a flowchart illustrating throttling control via a rotary blowout preventer with throttling function. During throttling operation, the direct-acting shut-off valve 25 is closed, while the first side wing shut-off valve 31, the second side wing shut-off valve 34, the third side wing shut-off valve 38, and the fourth side wing shut-off valve 37 are simultaneously opened. The fluid flow direction in the flow channel is as follows: Figure 15 As indicated by the middle arrow. Then, by controlling the first side wing throttle valve 32 and the second side wing throttle valve 36 respectively, throttling control of the fluid is achieved.

[0087] See the flowchart for the third working state in this embodiment. Figure 16 That is, the rotary blowout preventer with throttling control function is in a straight-through state, while the first side wing shut-off valve 31, the second side wing shut-off valve 34, the third side wing shut-off valve 38, and the fourth side wing shut-off valve 37 are closed, and the straight-through shut-off valve 25 is opened. The fluid flow direction in the flow channel is as follows: Figure 16As indicated by the middle arrow, the water flows directly out from the straight-through shut-off valve 25.

[0088] See the structural schematic diagram of this embodiment two. Figure 12 and Figure 13 Compared to Embodiment 1, a flow detection module is added. This flow detection module is located at the fourth interface 24 of the multi-port connector 2 and is connected to the multi-port connector 2. Specifically, the flow detection module includes a flow meter 51, a first flow shut-off valve 52, and a second flow shut-off valve 53. The flow meter 51 extends upwards in the direction of the main through-hole. The first flow shut-off valve 52 and the second flow shut-off valve 53 are respectively located at both ends of the flow meter 51 and are connected to it. The inlet of the flow meter 51 is the flow detection input interface, located at the fourth interface 24 and connected to the multi-port connector 2. That is, a fifth interface connected to the flow detection inlet is provided at the fourth interface 24 of the multi-port connector 2, and the fifth interface forms an integral structure with the multi-port connector 2. The outlet of the second flow shut-off valve 53 is the flow detection output interface. The first flow shut-off valve 52 is also located at the fourth interface 24, forming an integral structure with the multi-port connector 2. The first flow shut-off valve 52 and the second flow shut-off valve 53... Figure 13 The valves are arranged vertically and horizontally in the indicated direction. A dual-output flow actuator 54 is provided between the first flow shut-off valve 52 and the second flow shut-off valve 53 to drive the first flow shut-off valve 52 and the second flow shut-off valve 53 to be in an open and closed state, respectively. A second right-angle connector 55 is provided at the outlet of the second flow shut-off valve 53, and the second right-angle connector 55 and the outlet of the first flow shut-off valve 52 are connected by a three-way connector 56. Similarly, the control module is electrically connected to the flow detection module, that is, the control module controls the opening and closing of each valve through the dual-output flow actuator 54.

[0089] The dual-output flow actuator 54 drives the first flow shut-off valve 52 and the second flow shut-off valve 53 to be in an open and closed state, respectively. That is, when it is necessary to detect the flow rate of the fluid, the dual-output flow actuator 54 makes the first flow shut-off valve 52 closed and the second flow shut-off valve 53 open. The fluid then passes through the flow meter 51, flows out from the output end of the second flow shut-off valve 53, and finally flows out through the three-way connector 56, thus realizing the detection of the fluid flow rate.

[0090] If flow detection is not required, the first flow shut-off valve 52 is opened and the second flow shut-off valve 53 is closed by the flow dual-output actuator 54. The fluid does not pass through the flow meter 51 and flows directly out from the three-way connector 56 at the output end of the first flow shut-off valve 52.

[0091] See the flowchart of the first working state in this embodiment two. Figure 17This is a flowchart illustrating flow detection via a rotary blowout preventer with throttling control. The throttling control module is in the closed state, meaning the first side-wing shut-off valve 31, the second side-wing shut-off valve 34, the third side-wing shut-off valve 38, and the fourth side-wing shut-off valve 37 are all closed. During flow detection, the direct-connect shut-off valve 25 is open, while the first flow shut-off valve 52 is closed and the second flow shut-off valve 53 is open. The fluid passes through the flow meter 51 and then flows out from the output of the second flow shut-off valve 53. The fluid flow direction in the flow channel is as follows: Figure 17 As indicated by the middle arrow, the flow rate of the fluid is detected.

[0092] See the flowchart for the second working state in this embodiment. Figure 18 The first flow shut-off valve 52 is in the open state, and... Figure 17 In contrast, when the second flow shut-off valve 53 is closed, the fluid does not pass through the flow meter 51, and the fluid flow direction in the flow channel is as follows: Figure 18 As indicated by the middle arrow, the flow is directly discharged from the output end of the first flow shut-off valve 52.

[0093] See the flowchart for the third working state in this embodiment two. Figure 19 This is a flowchart illustrating simultaneous throttling control and flow detection via a rotary blowout preventer with throttling control function. The direct-acting shut-off valve 25 is closed, while the first side-wing shut-off valve 31, the second side-wing shut-off valve 34, the third side-wing shut-off valve 38, and the fourth side-wing shut-off valve 37 are simultaneously open. The fluid flow direction in the flow channel is as follows: Figure 19 As indicated by the middle arrow; then, the first side wing throttle valve 32 and the second side wing throttle valve 36 are controlled respectively to achieve throttling control of the fluid. Simultaneously, the first flow cut-off valve 52 is closed, and the second flow cut-off valve 53 is open. The fluid passes through the flow meter 51 and then flows out from the output end of the second flow cut-off valve 53. The fluid flow direction in the flow channel is as follows: Figure 19 As indicated by the middle arrow, the flow rate of the fluid is detected.

[0094] In the above Figures 14 to 19 In the above text, the "E" next to the first side wing throttle valve 32 and the second side wing throttle valve 36 is an abbreviation for "electric actuator," indicating that in this embodiment, the first side wing throttle valve 32 and the second side wing throttle valve 36 operate electrically. Figure 17 , 18 In section 19, the "FE" next to flow meter 51 is an abbreviation for "Flow Element (Flow Detection Unit)," where "1" indicates the sequence number. Simultaneously, the throttling control module can operate in either a single throttling control and standby mode, or both throttling channels can be used simultaneously, depending on the actual operating conditions.

[0095] In this embodiment, both output actuators are electrically driven structures. A manual drive mechanism can also be added to ensure that the system can operate normally through the manual mechanism in the event of failure or malfunction of the electrically driven structure.

[0096] In this embodiment, the through hole on the housing 11 for the clamping member 46 to pass through, and the clamping member 46 can be set to a non-circular shape according to actual use to prevent the clamping member 46 from rotating.

[0097] In the embodiments provided by this utility model, the straight-through shut-off valve 25, the first flow shut-off valve 52, and the inlet of the flow meter 51 are all integrated with the multi-port connector 2, that is, the above-mentioned multiple components are combined together, making the structure more compact and the volume smaller. At the same time, in specific applications, it can be set as a separate structure according to the actual situation.

[0098] In this embodiment, all shut-off valves use plug valves as their valve cores. In specific embodiments, other types of shut-off valves, such as gate valves or ball valves, can be selected according to their operating conditions.

[0099] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rotary blowout preventer with throttling control function, characterized in that, Includes rotary blowout preventer assembly, multi-port connector and throttling control module; The rotary blowout preventer assembly includes a housing and a rotary seal assembly. The housing has a main through-hole, two side wing outlets and a straight outlet. The rotary seal assembly is disposed in the main through-hole, and a straight shut-off valve is disposed at the straight outlet. The throttling control module includes two modules: a first throttling control module and a second throttling control module. The two side outlets are the first side outlet and the second side outlet, respectively. The first throttling control module is connected to the first side outlet and the multi-port connector, and the second throttling control module is connected to the second side outlet and the multi-port connector. The throttling control module extends upward in the direction of the main through hole. The multi-port connector has a first interface, a second interface and a third interface, the first interface is connected to the straight-through outlet, and the straight-through shut-off valve is disposed at the first interface end; The first throttling control module is connected to the second interface, and the second throttling control module is connected to the third interface.

2. A rotary blowout preventer with throttling control function according to claim 1, characterized in that, The first throttling control module includes a first side wing shut-off valve, a second side wing shut-off valve, and a first side wing throttling valve. The first side wing outlet, the first side wing shut-off valve, the first side wing throttling valve, the second side wing shut-off valve, and the second interface are connected in sequence, and the first side wing throttling valve extends upward toward the main through hole.

3. A rotary blowout preventer with throttling control function according to claim 2, characterized in that, The second throttling control module includes a third side wing shut-off valve, a fourth side wing shut-off valve, and a second side wing throttling valve. The second side wing outlet, the third side wing shut-off valve, the second side wing throttling valve, the fourth side wing shut-off valve, and the third interface are connected in sequence, and the second side wing throttling valve extends upward toward the main through hole.

4. A rotary blowout preventer with throttling control function according to claim 2, characterized in that, The first wing shut-off valve, the second wing shut-off valve, and the first wing throttle valve all have right-angle flow channels.

5. A rotary blowout preventer with throttling control function according to claim 3, characterized in that, The third wing shut-off valve, the fourth wing shut-off valve, and the second wing throttle valve all have right-angle flow channels.

6. A rotary blowout preventer with throttling control function according to claim 4, characterized in that, The first side wing shut-off valve and the second side wing shut-off valve are arranged facing each other, and a throttling dual-output actuator is provided between the first side wing shut-off valve and the second side wing shut-off valve to drive the first side wing shut-off valve and the second side wing shut-off valve to be in the same open and closed state.

7. A rotary blowout preventer with throttling control function according to claim 5, characterized in that, The third and fourth side wing shut-off valves are arranged facing each other, and a throttling dual-output actuator is provided between the third and fourth side wing shut-off valves to drive the third and fourth side wing shut-off valves to be in a state of simultaneous opening and closing.

8. A rotary blowout preventer with throttling control function according to claim 2, characterized in that, A filter element is provided in the flow channel at the outlet end of the first side wing shut-off valve.

9. A rotary blowout preventer with throttling control function according to claim 3, characterized in that, The outlet end of the third side wing shut-off valve is equipped with a filter element.

10. A rotary blowout preventer with throttling control function according to any one of claims 2 to 9, characterized in that, It also includes a flow detection module, and the multi-port connector also has a fourth interface, the flow detection module being disposed at the fourth interface end and connected to the multi-port connector.

11. A rotary blowout preventer with throttling control function according to claim 10, characterized in that, The flow detection module includes a flow meter, a first flow shut-off valve, and a second flow shut-off valve. The flow meter extends upward in the direction of the main through-hole. The first flow shut-off valve and the second flow shut-off valve are respectively located at both ends of the flow meter and communicate with the flow meter. The inlet of the flow meter is a flow detection input interface, which is located at the fourth interface end. The outlet of the second flow shut-off valve is a flow detection output interface.

12. A rotary blowout preventer with throttling control function according to claim 11, characterized in that, The first flow shut-off valve and the second flow shut-off valve are arranged facing each other, and a flow dual-output actuator is provided between the first flow shut-off valve and the second flow shut-off valve to drive the first flow shut-off valve and the second flow shut-off valve to be in an open and closed state respectively.

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