Deepwater umbilical cable torque dynamic monitoring device

Abstract

The invention relates to a deepwater umbilical cable torque dynamic monitoring device, and belongs to the field of marine cable monitoring, the deepwater umbilical cable torque dynamic monitoring device comprises a head unit and a tail unit, the head unit and the tail unit are fixed on the outer wall of an umbilical cable at an interval, and the head unit and the tail unit are connected through a rigid rod piece; and torque sensors are arranged in the head unit and the tail unit. The device has the beneficial effects that when a worker places down the umbilical cable, the torque sensors on the head unit and the tail unit respectively monitor the torsion angles of two positions of the umbilical cable, then the accumulated torque of the umbilical cable in the interval is calculated according to the angle difference value of the two positions, the structure is simple, the measurement precision is high, the torque state can be output in real time, and the working efficiency is improved. The posture and lowering speed of the mine car and the umbilical cable are convenient to adjust.

Description

Technical Field

[0001] The invention relates to the field of marine cable monitoring, and in particular to a deepwater umbilical cable torque dynamic monitoring device. Background Art

[0002] An umbilical cable is a combination of cable units used for underwater operations. Its main function is to provide power, electrical signals, data transmission, etc. to underwater equipment.

[0003] In deep-sea mining operations, one of the steps is to lower the mining vehicle. The deep-water umbilical cable connects the mining vehicle from the ship to the seabed. In this process, factors such as wave impact and uneven distribution of the mining vehicle mass may cause the umbilical cable to twist. At the same time, the ocean current has a continuous drag force on the mining vehicle with an irregular shape, which also causes the torque in the umbilical cable to accumulate continuously. The accumulation of torque in the umbilical cable may lead to very serious consequences.

[0004] When the torque is too large and exceeds the torque limit bearing capacity of the umbilical cable, it will cause the functional layer to fail. Secondly, the torque continues to accumulate. When the mining vehicle hits the bottom, the cable relaxes and may cause torsional entanglement failure at the end. The above two torsional failure mechanisms pose a serious threat to the safety of the mining vehicle operation process, and the umbilical cable torque needs to be monitored.

[0005] At the same time, due to the ever-changing marine environmental conditions, torque accumulation is closely related to the real-time environmental conditions and has the characteristics of dynamic change. Therefore, real-time monitoring is required to adjust the posture and lowering speed of the mine car and umbilical cable in time according to the current actual torque. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a device capable of performing real-time dynamic monitoring of the torque of a deepwater umbilical cable.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: a deepwater umbilical cable torque dynamic monitoring device, comprising a head unit and a tail unit, the head unit and the tail unit are fixed on the outer wall of the umbilical cable at intervals, and the head unit and the tail unit are connected by a rigid rod;

[0008] Torque sensors are arranged in both the head unit and the tail unit.

[0009] The beneficial effect of the present invention is that when the staff lowers the umbilical cable, the torque sensors on the head unit and the tail unit respectively monitor the torsion angles of the two positions of the umbilical cable, and then calculate the cumulative torque of the umbilical cable in the interval according to the angle difference between the two positions. The structure is simple, the measurement accuracy is high, and the torque state can be output in real time, which is convenient for adjusting the posture and lowering speed of the mine car and the umbilical cable.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, a plurality of anti-bending device units are arranged on the outer wall of the umbilical cable, two adjacent anti-bending device units are connected in sequence, and the head unit and the tail unit are connected to the anti-bending device units respectively.

[0012] The beneficial effect of adopting the above further scheme is that the anti-bending device unit connects the head unit and the tail unit to form a continuous bending limiter group that is engaged in sequence, and the bending limiter group is mounted on the umbilical cable. When the torque monitoring is completed, the bending limiter group that is engaged in sequence has a minimum bending radius to prevent the umbilical cable from excessive bending.

[0013] Further, the head unit and the tail unit each include an inner cylinder, the inner cylinder is fixedly sleeved on the umbilical cable, an outer cylinder is rotatably sleeved on the outer wall of the inner cylinder, and a torque sensor is arranged between the outer wall of the inner cylinder and the inner wall of the outer cylinder;

[0014] The outer cylinders of the head unit and the tail unit are connected via a rigid rod.

[0015] The beneficial effect of adopting the above further scheme is that the two outer cylinders of the head unit and the tail unit are relatively fixed after being connected by rigid rods. When the two inner cylinders twist following the umbilical cable, the two outer cylinders serve as a reference for torque sensors to monitor the twisting angles of the two inner cylinders.

[0016] Furthermore, at least two connection blocks are evenly fixedly connected to the circumferential outer wall of the outer cylinder around the axis, and through holes are opened on the connection blocks. The rigid rod passes through the through holes of two adjacent outer cylinders to connect the two outer cylinders.

[0017] The beneficial effect of adopting the above further solution is that the rigid rod passes through the through hole to fix the two outer cylinders so that they are relatively stationary.

[0018] Furthermore, the rigid rod is an electric telescopic rod, which is installed in a through hole on any outer cylinder, and the telescopic end of the electric telescopic rod points to the through hole of an adjacent outer cylinder.

[0019] The beneficial effect of adopting the above further solution is: when the electric telescopic rod is extended, the outer cylinders of the head unit and the tail unit are connected, so that the two outer cylinders are relatively fixed and no relative displacement occurs, and the two outer cylinders serve as the reference for torque monitoring of the two inner cylinders;

[0020] When the monitoring is completed, the electric telescopic rod retracts, the outer cylinders of the head unit and the tail unit separate, and the head unit and the tail unit only serve as bending limiters that engage with adjacent anti-bending devices in sequence to prevent the umbilical cable from excessive bending.

[0021] Furthermore, a wireless signal transceiver is installed on the outer cylinder, and the wireless signal transceiver is electrically connected to the electric telescopic rod to drive the electric telescopic rod to extend and retract.

[0022] The beneficial effect of adopting the above further solution is that the wireless signal transceiver makes it easy for the staff to remotely control the extension and retraction of the electric telescopic rod, and the operation is safe and convenient.

[0023] Furthermore, one end of the inner cylinder extends out of the outer cylinder and a first ring platform is fixedly connected to the outer wall, and a first ring groove is formed on the inner wall of one end of the outer cylinder away from the first ring platform;

[0024] One end of the anti-bending device unit is connected to the first annular platform adjacent to the inner cylinder, and the other end of the anti-bending device unit is connected to the first annular groove adjacent to the outer cylinder.

[0025] The beneficial effect of adopting the above further solution is that the first ring platform and the first ring groove are easy to connect with the anti-bending device unit, have a simple structure, can rotate freely, and will not hinder torque monitoring.

[0026] Further, the anti-bending device unit includes an anti-bending cylinder, a second ring platform is fixedly connected to the outer wall of one end of the anti-bending cylinder, a second ring groove is opened on the inner wall of the other end of the anti-bending cylinder, and the second ring platform of the anti-bending cylinder is rotatably located in the second ring groove of the adjacent anti-bending cylinder;

[0027] The second annular platform of the anti-bending device unit located at the head end is rotatably located in the first annular groove adjacent to the outer cylinder, and the second annular groove of the anti-bending device unit located at the tail end is rotatably connected to the first annular platform adjacent to the inner cylinder.

[0028] The beneficial effect of adopting the above further scheme is that the anti-bending cylinder can be connected with the bow unit and the tail unit to form a continuous bending limiter group that is engaged in sequence. It has a simple structure, can rotate freely, has a minimum bending radius, and can prevent the umbilical cable from excessive bending.

[0029] Furthermore, the torque sensor is a non-contact dynamic torque sensor.

[0030] The beneficial effects of adopting the above further solution are: the non-contact torque monitoring sensor has high monitoring accuracy, is not easy to wear, and has a long service life.

[0031] Furthermore, the inner cylinder and the outer cylinder are both made of polyurethane material.

[0032] The beneficial effect of adopting the above further scheme is that the polyurethane material has high strength, high wear resistance and corrosion resistance, and is suitable for harsh working conditions such as seawater. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1It is an overall schematic diagram of the present invention.

[0034] Figure 2 It is a schematic diagram of the inner cylinder and the outer cylinder of the present invention.

[0035] Figure 3 It is a schematic diagram of the connection block of the present invention.

[0036] Figure 4 It is a schematic diagram of the anti-bending cylinder of the present invention.

[0037] Figure 5 It is a working schematic diagram of the present invention.

[0038] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0039] 1. Umbilical cable; 2. Rigid rod; 3. Torque sensor; 4. Inner cylinder; 5. Outer cylinder; 6. Wireless signal transceiver; 7. Connecting block; 8. Through hole; 9. First ring platform; 10. First ring groove; 11. Anti-bending cylinder; 12. Second ring platform; 13. Second ring groove. DETAILED DESCRIPTION

[0040] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0041] Example 1

[0042] like Figures 1 to 5 As shown, a deepwater umbilical cable torque dynamic monitoring device comprises a head unit and a tail unit, wherein the head unit and the tail unit are fixed on the outer wall of the umbilical cable 1 at intervals, and the head unit and the tail unit are connected by a rigid rod 2;

[0043] The head unit and the tail unit are both provided with a torque sensor 3 .

[0044] The beneficial effect of this embodiment is that when the staff lowers the umbilical cable 1, the head unit and the tail unit are installed on the umbilical cable 1. If the umbilical cable 1 is twisted, the torque sensors 3 on the head unit and the tail unit respectively monitor the twisting angles at two positions, and then calculate the accumulated torque of the umbilical cable 1 in the interval according to the angle difference between the two positions. The structure is simple, the measurement accuracy is high, and the torque state can be output in real time, which is convenient for adjusting the posture and lowering speed of the mine car and the umbilical cable 1.

[0045] like Figure 1 As shown, a plurality of anti-bending device units are arranged on the outer wall of the umbilical cable 1, two adjacent anti-bending device units are connected in sequence, and the head unit and the tail unit are connected to the anti-bending device units respectively.

[0046] The beneficial effect of adopting the preferred scheme in the above embodiment is: the anti-bending device unit connects the head unit and the tail unit to form a continuous bending limiter group that is engaged in sequence, and the bending limiter group is sleeved on the umbilical cable 1. When the torque monitoring is completed, the bending limiter group that is engaged in sequence has a minimum bending radius to prevent the umbilical cable 1 from excessive bending.

[0047] Specifically, in this embodiment, the head unit and the tail unit are arranged at intervals, the tail unit is located at the end of the umbilical cable 1 closest to the seabed mining car, and the anti-bending device unit can be installed between the head unit and the tail unit;

[0048] You can also choose to install the head unit between multiple anti-bending device units, depending on monitoring needs and actual project conditions.

[0049] like Figures 2 to 3 As shown, the head unit and the tail unit both include an inner cylinder 4, the inner cylinder 4 is fixedly sleeved on the umbilical cable 1, an outer cylinder 5 is movably sleeved on the outer wall of the inner cylinder 4, one end of the torque sensor 3 is fixedly connected to the outer wall of the inner cylinder 4, and the other end of the torque sensor 3 is fixedly connected to the inner wall of the outer cylinder 5;

[0050] The outer cylinders 5 of the head unit and the tail unit are connected via a rigid rod 2 .

[0051] The beneficial effect of adopting the preferred scheme in the above embodiment is that the two outer cylinders 5 of the head unit and the tail unit are relatively fixed after being connected by the rigid rod 2, and when the two inner cylinders 4 twist following the umbilical cable 1, the two outer cylinders 5 serve as a reference for the torque sensor 3 to monitor the twisting angle of the two inner cylinders 4.

[0052] Specifically, the head unit and the tail unit are cylindrical and are fixedly sleeved on the outer wall of the umbilical cable 1;

[0053] Because the inner cylinder 4 is tightly connected to the umbilical cable 1, the inner cylinder 4 will be driven to rotate together when the umbilical cable 1 is twisted, while the two outer cylinders 5 are relatively fixed after being connected by the rigid rod 2 and will not move with the inner cylinder 4. As a unified monitoring reference when the two inner cylinders 4 rotate, when the two inner cylinders 4 rotate in the two outer cylinders 5, the two torque sensors 3 respectively monitor the torsion angles, thereby obtaining different readings;

[0054] The head unit and the tail unit are located at different positions on the umbilical cable 1, the torsion angles and torques of the two inner cylinders 4 are different, and the readings of the torque sensor 3 are also different. The reading obtained by the tail unit minus the reading obtained by the head unit is the angle difference, and the angle difference is divided by the length of the middle anti-bending device unit to obtain the torsion angle per unit length. The torsion angle per unit length is multiplied by the total length of the umbilical cable 1 lowered and the torsional stiffness of the umbilical cable 1 to obtain the cumulative torque value.

[0055] like Figures 2 to 3 As shown, at least two connection blocks 7 are evenly fixed on the circumferential outer wall of the outer cylinder 5 around the axis, and through holes 8 are opened on the connection blocks 7. The rigid rod 2 passes through the through holes 8 of two adjacent outer cylinders 5 to connect the two outer cylinders 5.

[0056] The beneficial effect of adopting the preferred solution in the above embodiment is that the rigid rod 2 passes through the through hole 8 to fix the two outer cylinders 5 so that they are relatively stationary.

[0057] like Figures 1 to 3 As shown, the rigid rod 2 is an electric telescopic rod, which is installed in a through hole 8 on any outer cylinder 5 , and the telescopic end of the electric telescopic rod points to the through hole 8 of the adjacent outer cylinder 5 .

[0058] The beneficial effects of the preferred solution in the above embodiment are: when the electric telescopic rod is extended, the outer cylinder 5 of the head unit and the tail unit are connected, so that the two outer cylinders 5 are relatively fixed and no relative displacement occurs. The two outer cylinders 5 serve as the reference for torque monitoring of the two inner cylinders 4;

[0059] When the monitoring is finished, the electric telescopic rod is retracted, and the outer cylinders 5 of the head unit and the tail unit are separated. The head unit and the tail unit only serve as bending limiters that engage with adjacent anti-bending devices in sequence to prevent the umbilical cable 1 from excessive bending.

[0060] like Figure 1 to Figure 2 As shown, a wireless signal transceiver 6 is installed on the outer cylinder 5, and the wireless signal transceiver 6 is electrically connected to the electric telescopic rod to drive the electric telescopic rod to extend and retract.

[0061] The beneficial effect of adopting the preferred solution in the above embodiment is that the wireless signal transceiver 6 facilitates the staff to remotely control the extension and retraction of the electric telescopic rod, and the operation is safe and convenient.

[0062] like Figure 1 to Figure 2 As shown, one end of the inner cylinder 4 extends out of the outer cylinder 5 and a first ring platform 9 is fixedly connected to the outer wall, and a first ring groove 10 is formed on the inner wall of the end of the outer cylinder 5 away from the first ring platform 9;

[0063] The anti-bending device unit is connected to the first annular platform 9 adjacent to the inner cylinder 4 , and the anti-bending device unit is connected to the first annular groove 10 adjacent to the outer cylinder 5 .

[0064] The beneficial effects of adopting the preferred solution in the above embodiment are: the first ring platform 9 and the first ring groove 10 are easy to connect with the anti-bending device unit, have a simple structure, can rotate freely, and will not hinder torque monitoring.

[0065] like Figures 1 to 4As shown, the anti-bending device unit includes an anti-bending cylinder 11, a second ring platform 12 is fixedly connected to the outer side wall of one end of the anti-bending cylinder 11, and a second ring groove 13 is opened on the inner side wall of the other end of the anti-bending cylinder 11, and the second ring platforms 12 of two adjacent anti-bending cylinders 11 extend into the second ring groove 13;

[0066] The second annular platform 12 of the anti-bending device unit is connected to the first annular groove 10 adjacent to the outer cylinder 5 , and the second annular groove 13 of the anti-bending device unit is connected to the first annular platform 9 adjacent to the inner cylinder 4 .

[0067] The beneficial effect of adopting the preferred scheme in the above embodiment is that the anti-bending cylinder 11 can be connected to the head unit and the tail unit to form a continuous bending limiter group that is engaged in sequence. It has a simple structure, can rotate freely, has a minimum bending radius, and prevents the umbilical cable 1 from excessive bending.

[0068] like Figure 1 to Figure 2 As shown, the torque sensor 3 is a non-contact dynamic torque sensor.

[0069] The beneficial effects of adopting the preferred solution in the above embodiment are: the non-contact torque monitoring sensor has high monitoring accuracy, no friction loss, and long service life.

[0070] Specifically, the non-contact dynamic torque sensor is an existing technology, and non-contact monitoring can be achieved through several methods such as magnetic coupling principle, Hall element principle, and magnetic induction intensity change principle. A ring body is sleeved on the outer wall of the inner cylinder 4, and a Hall element and a magnet are set on the inner wall of the outer cylinder 5. The outer cylinder 5 is stationary relative to the inner cylinder 4. When the inner cylinder 4 rotates with the umbilical cable 1, it drives the ring body to rotate. The Hall element monitors the changes in the magnetic field and magnetic flux between the ring body and the magnet, and then outputs an electrical signal; by measuring the different electrical signals of the tail unit and the head unit, the torque value can be calculated through formula calculation.

[0071] like Figures 1 to 3 As shown, the inner cylinder 4 and the outer cylinder 5 are both made of polyurethane material.

[0072] The beneficial effect of adopting the above further scheme is that the polyurethane material has high strength, high wear resistance and corrosion resistance, and is suitable for harsh working conditions such as seawater.

[0073] Example 2

[0074] Specific working process:

[0075] Step 1: Before the umbilical cable 1 is lowered, the electric telescopic rod of the torque monitoring head unit is ejected and inserted into the through hole 8 of the torque monitoring tail unit.

[0076] Step 2: During the lowering of the umbilical cable 1, the support vessel or the onshore terminal obtains the readings of the torque monitoring head unit and the torque monitoring tail unit through wireless communication. At this time, the readings are all angle values.

[0077] Step 3: The following algorithm is built into the onshore terminal: the reading of the torque monitoring tail unit is subtracted from the value of the torque monitoring head unit to obtain the angle difference, the angle difference is divided by the length of the middle anti-bending device unit to obtain the torsion angle per unit length, and the torsion angle per unit length is multiplied by the total length of the umbilical cable 1 lowered and the torsional stiffness of the umbilical cable 1 to obtain the cumulative torque value.

[0078] Step 4: After the umbilical cable 1 touches the bottom, the torque monitoring of the lowering process of the umbilical cable 1 ends, and the electric telescopic rod is automatically retracted through the terminal control. With the further release of the umbilical cable 1 and the movement of the mine car, the torque monitoring head unit, the torque monitoring tail unit and the middle anti-bending unit engage with each other to form a continuous bending limiter with a minimum bending radius, which plays the role of limiting the bending of the umbilical cable.

[0079] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0080] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0081] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0084] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A deepwater umbilical cable torque dynamic monitoring device, characterized in that: It comprises a head unit and a tail unit, wherein the head unit and the tail unit are fixed on the outer wall of the umbilical cable (1) at intervals, and the head unit and the tail unit are connected via a rigid rod (2); Torque sensors (3) are provided in both the head unit and the tail unit.

2. A deepwater umbilical cable torque dynamic monitoring device according to claim 1, characterized in that: A plurality of anti-bending device units are arranged on the outer wall of the umbilical cable (1), two adjacent anti-bending device units are connected in sequence, and the head unit and the tail unit are respectively connected to the anti-bending device units.

3. A deepwater umbilical cable torque dynamic monitoring device according to claim 1 or 2, characterized in that: The head unit and the tail unit both comprise an inner cylinder (4), the inner cylinder (4) being fixedly sleeved on the umbilical cable (1), an outer cylinder (5) being rotatably sleeved on the outer wall of the inner cylinder (4), and a torque sensor (3) being arranged between the outer wall of the inner cylinder (4) and the inner wall of the outer cylinder (5); The outer cylinders (5) of the head unit and the tail unit are connected via a rigid rod (2).

4. A deepwater umbilical cable torque dynamic monitoring device according to claim 3, characterized in that: At least two connection blocks (7) are evenly fixedly connected to the circumferential outer wall of the outer cylinder (5) around the axis, and each of the connection blocks (7) is provided with a through hole (8). The rigid rod (2) passes through the through holes (8) of two adjacent outer cylinders (5) to connect the two outer cylinders (5).

5. A deepwater umbilical cable torque dynamic monitoring device according to claim 4, characterized in that: The rigid rod (2) is an electric telescopic rod, which is installed in a through hole (8) on any outer cylinder (5), and the telescopic end of the electric telescopic rod points to the through hole (8) of the adjacent outer cylinder (5).

6. A deepwater umbilical cable torque dynamic monitoring device according to claim 5, characterized in that: A wireless signal transceiver (6) is installed on each of the outer cylinders (5); the wireless signal transceiver (6) is electrically connected to the electric telescopic rod and is used to drive the electric telescopic rod to extend and retract.

7. A deepwater umbilical cable torque dynamic monitoring device according to claim 3, characterized in that: One end of the inner cylinder (4) extends out of the outer cylinder (5) and a first ring platform (9) is fixedly connected to the outer wall; a first ring groove (10) is formed on the inner wall of the end of the outer cylinder (5) away from the first ring platform (9); One end of the anti-bending device unit is connected to a first annular platform (9) adjacent to the inner cylinder (4), and the other end of the anti-bending device unit is connected to a first annular groove (10) adjacent to the outer cylinder (5).

8. A deepwater umbilical cable torque dynamic monitoring device according to claim 7, characterized in that: The anti-bending device unit comprises an anti-bending cylinder (11), a second ring platform (12) is fixedly connected to the outer side wall of one end of the anti-bending cylinder (11), a second ring groove (13) is opened on the inner side wall of the other end of the anti-bending cylinder (11), and the second ring platform (12) of the anti-bending cylinder (11) is rotatably located in the second ring groove (13) of the adjacent anti-bending cylinder (11); The second annular platform (12) of the anti-bending device unit located at the head end is rotatably located in the first annular groove (10) of the adjacent outer cylinder (5), and the second annular groove (13) of the anti-bending device unit located at the tail end is rotatably connected to the first annular platform (9) of the adjacent inner cylinder (4).

9. A deepwater umbilical cable torque dynamic monitoring device according to claim 3, characterized in that: The torque sensor (3) is a non-contact dynamic torque sensor.

10. A deepwater umbilical cable torque dynamic monitoring device according to claim 3, characterized in that: The inner cylinder (4) and the outer cylinder (5) are both made of polyurethane material.

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