Double-turbine rotating stabilized platform water circulation torque testing device and testing system

Abstract

The utility model provides a water circulation torque testing device for a double-turbine rotating stabilized platform, which can detect the output torque of the rotating stabilized platform at the same time when a hydraulic driving test is carried out, so that the measured data is closer to the actual working condition data of a rotating underground guide tool. The water circulation torque testing device comprises an adapter drill collar, a first square elbow and a dynamometric rod, wherein a linear first flow channel for water flow to pass through is arranged in the adapter drill collar in a penetrating manner; the small-diameter end of the adapter drill collar is detachably connected with the end part of the drill collar; a supporting sleeve coaxial with the adapter drill collar is arranged in the first square elbow, and the supporting sleeve horizontally extends from the outer wall of the bent part of the first square elbow to the center of the first opening end; a rotating part is arranged in the supporting sleeve; the two ends of the force measuring rod are connected with the digital display torque meter and an output shaft of the double-turbine rotating stable platform respectively, the force measuring rod is assembled in the supporting sleeve, and the force measuring rod is connected with the rotating part so that the force measuring rod can freely rotate in the supporting sleeve.

Description

Technical Field

[0001] The utility model relates to the field of performance testing of downhole steering tools for rotary steering drilling, and more specifically, to a water circulation torque testing device and a testing system for a dual-turbine rotary stable platform. Background Technique

[0002] For the structure of a dynamic rotary steering drilling tool, please refer to Figure 1 , which includes a drill collar 1, a single-axis stable platform body 2 arranged on the axis of the drill collar 1, an upper suspension paddle assembly 3 and a lower suspension paddle assembly 4 for fixing the single-axis stable platform body 2 and located at both ends thereof respectively, and an upper turbine assembly 5 and a lower turbine assembly 6 for providing drive.

[0003] The single-axis stable platform body 2 is supported by the upper suspension paddle assembly 3 and the lower suspension paddle assembly 4 and has a rotational degree of freedom along the axis of the drill collar 1. The single-axis stable platform body 2 uses two turbines and remains stationary relative to the earth, isolating the rotation of the drill collar 1, thereby providing a spatial attitude indication for the rotary steering tool. When the drill collar 1 rotates, the single-axis stable platform body 2 will follow due to the action of resistance such as inertial force and bearing friction. When the mud flushes the upper turbine assembly 5 and the lower turbine assembly 6, the upper turbine assembly 5 rotates forward and the lower turbine assembly 6 rotates backward. Since two turbines are used, this dynamic rotary steering drilling tool is simply referred to as a "dual-turbine rotary stable platform".

[0004] A single-axis rate gyroscope and a torque motor (composed of the upper and lower turbine assemblies 6) installed axially along the single-axis stable platform body 2 of the dual-turbine rotary stable platform form a rate stabilization loop, making the single-axis stable platform body 2 remain stationary and stable relative to the earth, thereby isolating the rotation of the drill collar 1. In addition to maintaining the stability of the rotary stable platform itself, the stabilizing torque also needs to output torque to control the balance of other components.

[0005] In the existing rotary stable platform testing system (Gao Yi, Kang Simin, "Measurement and Control Technology of Full Rotary Steering Drilling Tools"), a mechanical bench and a hydraulic drive testing system are used to measure torque and conduct hydraulic drive testing respectively. However, the torque data measured by using the mechanical bench in the above testing method is not accurate enough; and the hydraulic drive testing system has no torque output function and cannot detect the stability and output torque of the stable platform body during hydraulic drive testing. Utility Model Content

[0006] The purpose of the utility model is to provide a water circulation torque testing device for a dual-turbine rotary stable platform, which can detect the output torque of the rotary stable platform while conducting hydraulic drive testing.

[0007] The embodiments of the utility model are implemented as follows:

[0008] A water circulation torque test device for a dual-turbine rotary stable platform. The water circulation torque test device includes an adapter drill collar, a first right-angle elbow, and a force-measuring rod. The adapter drill collar is a multi-stage linear adapter, and a linear first flow channel for water flow to pass through is provided through the inside of the adapter drill collar. The smaller-diameter end of the adapter drill collar is inserted into the end of the drill collar and is detachably connected to the end of the drill collar. Both ends of the first right-angle elbow are provided with connecting flanges, and a through second arc-shaped flow channel is provided inside the first right-angle elbow. The first open end at the upper part of the first right-angle elbow is flange-connected to the larger-diameter end of the adapter drill collar. A support sleeve coaxial with the adapter drill collar is provided inside the first right-angle elbow, and the support sleeve extends horizontally from the outer wall of the bent part of the first right-angle elbow towards the center of the first open end. A rotating part is provided inside the support sleeve. The two ends of the force-measuring rod are respectively connected to a digital display torque meter and the output shaft of the dual-turbine rotary stable platform. The force-measuring rod is assembled inside the support sleeve, and the force-measuring rod is connected to the rotating part so that the force-measuring rod can rotate freely inside the support sleeve.

[0009] In a preferred embodiment of the present utility model, a support platform is fixedly provided on the inner wall of the first open end of the first right-angle elbow. The support platform extends from the inner wall of the first right-angle elbow towards the support sleeve to fixedly support the support sleeve.

[0010] In a preferred embodiment of the present utility model, the support sleeve and the support platform are of an integral structure, and a part of the support sleeve extends out of the first right-angle elbow.

[0011] In a preferred embodiment of the present utility model, a sealing ring is provided between the force-measuring rod and the support sleeve.

[0012] In a preferred embodiment of the present utility model, the adapter drill collar is successively provided with a frustum part, a cylindrical part, and a flange part. The outer wall of the frustum part is provided with threads, and a first flow channel a with the same diameter as the drill collar flow channel is axially provided inside. The first flow channel a is cylindrical. The diameter of the cylindrical part is the same as that of the drill collar 1, and a first flow channel b and a first flow channel c are provided inside the cylindrical part. Among them, the first flow channel b is an extension of the first flow channel a, and the diameter of the first flow channel b is the same as that of the first flow channel a. The first flow channel c is a frustum-shaped enlarged flow channel. The upper bottom diameter of the first flow channel c is the same as the diameter of the first flow channel b, and the lower bottom diameter of the first flow channel c is larger than the upper bottom diameter. The flange part is used to connect the first right-angle elbow, and the lower bottom of the first flow channel c extends to the flange part.

[0013] In a preferred embodiment of the present utility model, the force-measuring rod includes a first force-measuring head, a second force-measuring head, and a force-measuring rod body. A first assembly groove for clamping the output shaft is provided inside the first force-measuring head. A second assembly groove for connecting the digital display torque meter is provided inside the second force-measuring head. The two ends of the force-measuring rod body are respectively connected to the first force-measuring head and the second force-measuring head, and the diameter of the force-measuring rod body is smaller than the diameter of the first force-measuring head / second force-measuring head.

[0014] In a preferred embodiment of the present utility model, the rotating part includes one or more ball bearings.

[0015] In a preferred embodiment of the present utility model, the above-mentioned water circulation torque testing device further includes a second right-angle elbow, the third opening end of the second right-angle elbow is connected to the second opening end of the first right-angle elbow, and the second right-angle elbow and the first right-angle elbow are connected into an "S" shape.

[0016] In a preferred embodiment of the present utility model, connection flanges are provided at both ends of the second right-angle elbow.

[0017] The present utility model further provides a water circulation torque testing system for a dual-turbine rotating stable platform, including the water circulation torque testing device of any one of the above. It is characterized in that the water circulation torque testing system includes a hydraulic drive testing system. Connect the water inlet end of the drill collar to the water outlet end of the hydraulic drive testing system, and connect the water outlet end of the first / second right-angle elbow to the water inlet end of the hydraulic drive testing system to form a water circulation torque testing system.

[0018] The beneficial effects of the embodiments of the present utility model are as follows:

[0019] 1. It can be assembled on the hydraulic drive testing system. While completing the hydraulic drive test, it can detect the stability and output torque of the single-axis stable platform body inside the drill collar.

[0020] 2. Compared with the traditional method of using mechanical drive to test the rotation speed and torque of the main shaft, this testing device can better fit the actual working conditions of hydraulic pulse-driven drilling, and the obtained test data is more accurate, laying a foundation for the overall performance of the downhole steering tool for rotary steerable drilling, the controllability of the stable control platform, parameter setting, and parameter optimization.

[0021] 3. Compared with the traditional hydraulic drive testing system, this testing device can measure the rotation torque of the single-axis stable platform body during the hydraulic drive test, providing a more accurate basis for parameter setting and parameter optimization to control the balance of other components on the drill collar. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of a dynamic rotary steerable drilling tool according to an embodiment of the present utility model;

[0024] Figure 2 Schematic structural diagram of the water circulation torque test device for the dual-turbine rotary stabilization platform according to an embodiment of the present invention;

[0025] Figure 3 Schematic structural diagram of the support table and the support sleeve according to an embodiment of the present invention;

[0026] Figure 4 Flowchart of the usage method of the water circulation torque test device for the dual-turbine rotary stabilization platform according to an embodiment of the present invention;

[0027] Reference numerals: drill collar 1; single-axis stabilization platform body 2; upper suspension paddle assembly 3; lower suspension paddle assembly 4; upper turbine assembly 5; lower turbine assembly 6; output shaft 001;

[0028] Adapter drill collar 100; first flow channel 110; first flow channel 110a; first flow channel 110b; first flow channel 110c; frustum portion 120; cylindrical portion 130; flange portion 140; first right-angle elbow 200; connecting flange 201; support sleeve 210; sealing ring 211; ball bearing 212; second arc-shaped flow channel 220; support table 230; force-measuring rod 300; first force-measuring head 310; second force-measuring head 320; force-measuring rod body 330; digital display torque meter 400; second right-angle elbow 500. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention claimed, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0031] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0033] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] In the existing rotary stable platform test system, the test bench is composed of a base, upper and lower support brackets for supporting the stable control platform and support bearings, upper and lower drive motors, a friction simulation mechanism, torque and speed measurement equipment, etc., and is tested by a hydraulic drive test system. Although the torque output can be measured, through mechanical simulation, there are still differences between the simulated working conditions and the actual hydraulic drive drilling working condition data, and usually the data is slightly adjusted for data correction. The traditional hydraulic drive test system, on the other hand, does not have a torque output function and cannot detect the stability and output torque of the stable platform body during hydraulic drive testing.

[0036] Although there are no specific index requirements for the overshoot in the control of the rotary stable platform, too large an overshoot easily causes the platform to generate rotational motion, increasing the difficulty of platform stable control and reducing the system control performance. Therefore, a test system that more closely fits the actual drilling working conditions is needed to complete various data index tests, thereby overcoming the occurrence of data overshoot.

[0037] First Embodiment

[0038] Please refer to Figure 2, this embodiment provides a water circulation torque test device for a dual-turbine rotary stabilization platform. The water circulation torque test device includes a transition drill collar 100, a first right-angle elbow 200 connected to the transition drill collar 100, and a force measuring rod 300 that penetrates the transition drill collar 100 and the first right-angle elbow 200 and is located on the central axis of the transition drill collar 100. One end of the force measuring rod 300 is connected to the output shaft 001 of the dual-turbine rotary stabilization platform, and one end is connected to a digital display torque meter 400. Thus, while the water circulation torque test device leads out the driving water flow, it measures the output torque of the rotary stabilization platform.

[0039] Among them, the transition drill collar 100 is a multi-stage straight adapter. A straight first flow channel 110 for water flow to pass through is provided inside the transition drill collar 100 in a penetrating manner; the smaller-diameter end of the transition drill collar 100 is inserted into and fixed to the end of the drill collar 1, and the smaller-diameter end of the transition drill collar 100 is detachably connected to the end of the drill collar 1.

[0040] In this embodiment, the detachable connection method between the transition drill collar 100 and the end of the drill collar 1 is selected as a threaded connection. The alternative connection methods can also be: snap connection, pin connection, key connection or other detachable fixed connection methods.

[0041] Specifically, the transition drill collar 100 is integrally formed by a frustum part 120, a cylindrical part 130 and a flange part 140 arranged in sequence.

[0042] The outer wall of the frustum part 120 is provided with threads for threaded connection with the end of the drill collar 1. Axially inside the frustum part 120, there is a first flow channel 110a with the same diameter as the flow channel of the drill collar 1, and the first flow channel 110a is cylindrical.

[0043] The diameter of the cylindrical part 130 is the same as that of the drill collar 1. Inside the cylindrical part 130, there are a first flow channel 110b and a first flow channel 110c. Among them, the first flow channel 110b is an extension of the first flow channel 110a, and the diameter of the first flow channel 110b is the same as that of the first flow channel 110a. The first flow channel 110c is a frustum-shaped expansion flow channel, which reduces the impact on the support sleeve or support platform at the first right-angle elbow 200 while discharging the water flow, and is used to ensure the stable test effect of the force measuring rod 300. The upper bottom diameter of the first flow channel 110c is the same as the diameter of the first flow channel 110b, and the lower bottom diameter of the first flow channel 110c is larger than the upper bottom diameter.

[0044] The flange part 140 is used to stably connect the first right-angle elbow 200, and the lower bottom of the first flow channel 110c extends to the flange part 140.

[0045] The first flow channel 110a, the first flow channel 110b and the first flow channel 110c together constitute the first flow channel 110 inside the transition drill collar 100.

[0046] The first right-angle elbow 200 includes a support sleeve 210 that horizontally extends from the outer wall of the bent portion of the first right-angle elbow 200 towards the center of the first opening end and is coaxial with the adapter drill collar 100, and a force-measuring rod 300 that is assembled inside the support sleeve 210 and can rotate freely.

[0047] Specifically, connection flanges 201 are provided at both ends of the first right-angle elbow 200. The first opening end at the upper part of the first right-angle elbow 200 is flange-connected to the larger-diameter end flange of the adapter drill collar 100. A flange gasket is provided between the connection flange 201 and the flange portion 140 of the adapter drill collar 100, and then they are fastened and connected by bolts.

[0048] A second arc-shaped flow channel 220 that runs through from end to end is provided inside the first right-angle elbow 200. The angle of the second arc-shaped flow channel 220 is 90°, which is used to reduce the flow loss of the fluid. A pipe body that horizontally extends from the outer wall of the bent portion of the first right-angle elbow 200 towards the center of the first opening end is provided inside the second arc-shaped flow channel 220, which is the support sleeve 210. The support sleeve 210 is used to assemble the force-measuring rod 300 and needs to be coaxial with the central axes of the drill collar 1 and the adapter drill collar 100.

[0049] In order to further increase the stability effect of the support sleeve 210, a support platform 230 is fixedly provided on the inner wall of the first opening end of the first right-angle elbow 200. The support platform 230 extends from the inner wall of the first right-angle elbow 200 towards the support sleeve 210 and is connected to the support sleeve 210 to fix the support sleeve 210.

[0050] The shape and structure of the support platform 230 are not limited, as long as it can ensure the stability of the support sleeve 210. In this embodiment, please refer to Figure 3 , the selected support platform 230 is composed of three support rods distributed in a circular array. Both ends of the support platform 230 are respectively connected to the inner wall of the first right-angle elbow 200 and the outer wall of the support sleeve 210.

[0051] The support sleeve 210 and the support platform 230 are of an integral structure. In this embodiment, they are selected to be welded. In other embodiments, the support sleeve 210, the support platform 230, and the first right-angle elbow 200 can also be integrally cast. A part of the support sleeve 210 extends out of the first right-angle elbow 200 to lead out part of the structure of the force-measuring rod 300, which is convenient for connecting torque measuring equipment.

[0052] In order to further ensure the sealing between the force-measuring rod 300 and the support sleeve 210 and prevent the test medium from flowing out of the support sleeve 210, a sealing ring 211 is provided between the force-measuring rod 300 and the support sleeve 210. The test medium can be water flow or mud.

[0053] To ensure that the force measuring rod 300 can rotate freely within the support sleeve 210, a rotating part is provided within the support sleeve 210, such that under the action of the rotating part, the force measuring rod 300 is connected to the support sleeve 210 in a manner that allows it to rotate about its axis.

[0054] In this embodiment, the rotating part is selected as a ball bearing 212. In other embodiments, it can also be achieved by redesigning the support sleeve 210 and providing rolling elements such as balls or rollers on its inner wall. The number of ball bearings 212 is not limited and can be one or more, which can be determined according to the specifications of the first right-angle elbow 200 or the force-bearing condition of the force measuring rod 300.

[0055] Specifically, in this embodiment, two ball bearings 212 are selected, and bearing bushings are also configured on the ball bearings 212 to further enhance the sealing effect.

[0056] Both ends of the force measuring rod 300 are respectively connected to the digital display torque meter 400 and the output shaft 001 of the double-turbine rotary stabilizing platform. The force measuring rod 300 is assembled within the support sleeve 210, and the force measuring rod 300 is connected to the rotating part, enabling the force measuring rod 300 to rotate freely within the support sleeve 210. Thus, the digital display torque meter 400 can measure the torque output of the single-axis stabilizing platform body 2 during the follow-up process.

[0057] Specifically, the force measuring rod 300 includes a first force measuring head 310, a second force measuring head 320, and a force measuring rod body 330. A first assembly groove for clamping the output shaft is provided inside the first force measuring head 310. In this embodiment, the first force measuring head 310 and the single-axis stabilizing platform body 2 are assembled using a key and keyway clamping structure, and the structure of the key and keyway is not limited, as long as the first force measuring head 310 and the shaft body can be fixedly assembled.

[0058] A second assembly groove for connecting the digital display torque meter 400 is provided inside the second force measuring head 320. The connection structure between the second force measuring head 320 and the digital display torque meter 400 has a wider range of choices compared to the connection structure of the first force measuring head 310. It can choose threaded connection, key and keyway clamping, or snap connection such as snap buckle and slot.

[0059] Both ends of the force measuring rod body 330 are respectively connected to the first force measuring head 310 and the second force measuring head 320, and the diameter of the force measuring rod body 330 is smaller than the diameter of the first force measuring head 310 / second force measuring head 320. The force measuring rod body 330 can be selected as an integral structure or a split structure for convenient assembly, that is, the force measuring rod body 330 can be split into two sections in the middle section. The first force measuring head 310 and a part of the force measuring rod body 330 are an integral body, and the second force measuring head 320 and a part of the force measuring rod body are an integral body. This split structure can be achieved by detachable connection methods such as key and keyway, threaded connection, etc.

[0060] The water circulation torque test device further includes a second right-angle elbow 500 for guiding the test medium. It can form a "C"-shaped structure with the first right-angle elbow 200. For the convenience of connection, ensuring the transmission direction of the medium, and avoiding flow losses, etc., the second right-angle elbow 500 and the first right-angle elbow 200 can also be connected into an "S" shape as in this embodiment.

[0061] Specifically, connection flanges are provided at both ends of the second right-angle elbow 500. The third open end of the second right-angle elbow 500 is connected to the second open end of the first right-angle elbow 200. Similarly, a flange gasket is provided between the first right-angle elbow 200 and the second right-angle elbow 500, and then they are firmly connected by bolts.

[0062] Second Embodiment

[0063] This embodiment provides a water circulation torque test system for a dual-turbine rotary stable platform, including the adapter drill collar 100, the first right-angle elbow 200, the freely rotatable force-measuring rod 300 disposed within the first elbow, and the second right-angle elbow 500 in the first embodiment. It is characterized in that the water circulation torque test system further includes a hydraulic drive test system. The water inlet end of the drill collar is connected to the water outlet end of the hydraulic drive test system, and the water outlet ends of the first / second right-angle elbows are connected to the water inlet end of the hydraulic drive test system to form a water circulation torque test system.

[0064] The hydraulic drive test system is a sealed-circulation test system, which at least includes a liquid storage tank for storing the flowing medium. The liquid outlet end of the second right-angle elbow 500 is connected to the liquid inlet end of the liquid storage tank through a pipeline, and the liquid outlet end of the liquid outlet pipe is connected to the liquid inlet end of the drill collar 1. A centrifugal pump is provided on the pipeline to realize the water circulation in the pipeline. Other instruments for regulating the medium flow rate or measurement, such as valves and flow meters, are also provided on the water circulation pipeline and will not be elaborated here.

[0065] Third Embodiment

[0066] This embodiment provides a method for using a water circulation torque test device for a dual-turbine rotary stable platform, including the water circulation torque test device for a dual-turbine rotary stable platform described in the first embodiment or the second embodiment. Please refer to Figure 4 , and this method for using includes:

[0067] First, assemble the force measuring rod 300 in the first right-angle elbow 200 to ensure that the force measuring rod 300 can rotate freely in the support sleeve 210. One of the assembly methods can be selected: the force measuring rod 300 adopts a split structure, and the second force measuring head 320 part of the force measuring rod 300 is inserted into the support sleeve 210 from the bending part of the first right-angle elbow 200, and the first force measuring head 310 part of the force measuring rod 300 is inserted into the support sleeve 210 from the first opening end of the first right-angle elbow 200, and then the two parts of the force measuring rod 300 are assembled together to form an integral force measuring rod 300, and the force measuring rod 300 can be freely rotated by moving the force measuring rod 300;

[0068] The adapter drill collar 100 and the first right angle elbow 200 are connected. One of the assembly methods can be selected: a flange gasket is arranged between the flange portion 140 of the adapter drill collar 100 and the connecting flange 201 of the first right angle elbow 200, and then the adapter drill collar 100 and the first right angle elbow 200 are fastened and connected by bolts to assemble the adapter drill collar 100 and the first right angle elbow 200 into a whole;

[0069] The adapter drill collar 100 is assembled and fixed on the drill collar 1, and one end of the force measuring rod 300 is connected to the output shaft of the double turbine rotating stable platform. The force measuring rod 300 is moved, and the force measuring rod 300 can rotate freely;

[0070] The first right-angle elbow 200 and the second right-angle elbow 500 are assembled. One of the assembly methods is to set a flange gasket between the connection flanges 201 of the first right-angle elbow 200 and the second right-angle elbow 500, and then fasten them with bolts, and at the same time assemble the digital torque meter 400 to the force measuring rod 300 to complete the assembly of the new water circulation torque test device.

[0071] The medium inlet of the drill collar 1 is connected to the medium outlet of the hydraulic drive test system, and the medium outlet of the second right-angle elbow 500 is connected to the centrifugal pump through a pipeline, and then the centrifugal pump is connected to the medium recovery port of the hydraulic drive test system.

[0072] In summary, the advantages of the water circulation torque testing device provided in this embodiment are:

[0073] 1. It can be assembled on the hydraulic drive test system to detect the stability and output torque of the single-axis stable platform body 2 inside the drill collar 1 while completing the hydraulic drive test;

[0074] 2. Compared with the traditional mechanical drive method to test the rotation speed and torque of the main shaft, this test device can better fit the actual working conditions of hydraulic pulse driven drilling, and the test data obtained is more accurate, laying a foundation for the overall performance of the downhole steering tool of rotary steering drilling and the controllability of the stable control platform, parameter setting and parameter optimization;

[0075] 3. Compared with the traditional hydraulic drive test system, this test device can measure the rotational torque of the uniaxial stable platform body 2 during the hydraulic drive test process, providing a more accurate parameter setting and an optimization basis for the parameters to control the balance of other components on the drill collar 1.

[0076] This specification describes examples of the embodiments of the present utility model, and does not mean that these embodiments illustrate and describe all possible forms of the present utility model. It should be understood that the embodiments in the specification can be implemented in various alternative forms. The drawings do not need to be drawn to scale; some features can be enlarged or reduced to show the details of specific components. The specific structural and functional details disclosed should not be construed as limiting, but are merely a representative basis for teaching those skilled in the art to implement the present utility model in various forms. Those skilled in the art should understand that the multiple features described and illustrated with reference to any one of the drawings can be combined with the features illustrated in one or more other drawings to form embodiments not explicitly illustrated or described. The described combined features provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the present utility model can be used for specific applications or implementations as needed.

[0077] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A water circulation torque test device for a double-turbine rotary stable platform, characterized in that The water circulation torque testing device includes: An adapter drill collar, which is a multi-stage straight adapter. A straight first flow channel for water flow to pass through is provided through the inside of the adapter drill collar. The smaller-diameter end of the adapter drill collar is inserted into the end of the drill collar and is detachably connected to the end of the drill collar. A first right-angle elbow. Connecting flanges are provided at both ends of the first right-angle elbow. A second arc-shaped flow channel is provided through the inside of the first right-angle elbow. The first open end at the upper part of the first right-angle elbow is flange-connected to the larger-diameter end of the adapter drill collar. A support sleeve coaxial with the adapter drill collar is provided inside the first right-angle elbow. The support sleeve extends horizontally from the outer wall of the bent part of the first right-angle elbow towards the center of the first open end. A rotating part is provided inside the support sleeve. A measuring force rod, with both ends respectively connected to the output shaft of a digital display torque meter and a double-turbine rotary stabilizing platform. The measuring force rod is assembled inside the support sleeve, and the measuring force rod is connected to the rotating part so that the measuring force rod can rotate freely inside the support sleeve.

2. The water circulation torque test device for the dual-turbine rotary stabilization platform according to claim 1, wherein A support platform is also fixedly provided on the inner wall of the first open end of the first right-angle elbow. The support platform extends from the inner wall of the first right-angle elbow towards the support sleeve to fixedly support the support sleeve.

3. The water circulation torque test device for the double-turbine rotary stabilization platform according to claim 2, characterized in that, The support sleeve and the support platform are of an integral structure, and part of the support sleeve extends out of the first right-angle elbow.

4. The water circulation torque test device for the double-turbine rotary stabilization platform according to any one of claims 1-3, characterized in that, A sealing ring is provided between the measuring force rod and the support sleeve.

5. The water circulation torque test device for the dual-turbine rotary stabilization platform according to any one of claims 1-3, characterized in that The adapter drill collar is sequentially provided with: A frustum part. Threads are provided on the outer wall of the frustum part. A first flow channel a with the same diameter as the drill collar flow channel is axially provided inside. The first flow channel a is cylindrical. A cylindrical part. The diameter of the cylindrical part is the same as the diameter of the drill collar. A first flow channel b and a first flow channel c are provided inside the cylindrical part. Among them, the first flow channel b is an extension of the first flow channel a, and the diameter of the first flow channel b is the same as the diameter of the first flow channel a. The first flow channel c is a frustum-shaped expanding flow channel. The upper base diameter of the first flow channel c is the same as the diameter of the first flow channel b, and the lower base diameter of the first flow channel c is larger than the upper base diameter. A flange part for connecting the first right-angle elbow. The lower base of the first flow channel c extends to the flange part.

6. The water circulation torque test device for the dual-turbine rotary stabilization platform according to any one of claims 1-3, characterized in that, The measuring force rod includes: A first measuring head. A first assembly groove for clamping the output shaft is provided inside the first measuring head. A second measuring head. A second assembly groove for connecting the digital display torque meter is provided inside the second measuring head. A measuring force rod body, with both ends respectively connected to the first measuring head and the second measuring head, and the diameter of the measuring force rod body is smaller than the diameter of the first measuring head / second measuring head.

7. The water circulation torque test device for the dual-turbine rotary stabilization platform according to any one of claims 1-3, characterized in that, The rotating part includes one or more ball bearings.

8. The water circulation torque test device for the dual-turbine rotary stable platform according to any one of claims 1-3, characterized in that, The water circulation torque testing device further includes a second right-angle elbow. The third open end of the second right-angle elbow is connected to the second open end of the first right-angle elbow. The second right-angle elbow and the first right-angle elbow are connected into an "S" shape.

9. The water circulation torque test device for the dual-turbine rotary stabilization platform according to claim 7, characterized in that, Connecting flanges are provided at both ends of the second right-angle elbow.

10. A water circulation torque test system for a dual-turbine rotary stabilization platform, comprising the water circulation torque test device for the dual-turbine rotary stabilization platform according to any one of claims 1-9, characterized in that, The described water cycle torque test system includes a hydraulic drive test system. Connect the water inlet end of the drill collar to the water outlet end of the hydraulic drive test system, and connect the water outlet end of the first / second right-angle elbow to the water inlet end of the hydraulic drive test system, the water cycle torque test system.

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