Shock-resistant self-adaptive limiting device for ship steam pipeline

Abstract

The invention relates to an anti-impact self-adaptive limiting device for a ship steam pipeline, and belongs to the technical field of ship steam pipeline impact resistance. The anti-impact self-adaptive limiting device comprises a shock absorption damping mechanism which comprises a damper rotationally connected with a ship body and a pipe clamp connected with the damper and surrounding the pipeline; the inner diameter of the pipe clamp is larger than the outer diameter of the pipeline, and an annular gap is formed between the pipe clamp and the pipeline. The gap maintaining mechanism is arranged on the pipe clamp, and the gap maintaining mechanism is used for enabling the inner side wall of the pipe clamp not to make contact with the outer side wall of the pipeline. Therefore, the pipe clamp connected with the damper can be prevented from making contact with the steam pipeline in daily operation of the ship body, and then vibration noise generated by the steam pipeline is prevented from being directly transmitted to the ship body through the damper. In addition, when the ship body is collided and impacted, the impact force is transmitted to the steam pipeline, the amplitude of the steam pipeline exceeds the annular gap, the steam pipeline makes contact with the pipe clamp, the impact force is transmitted to the damper through the pipe clamp, the damper achieves buffering energy consumption, and then the effect of protecting the steam pipeline is achieved.

Description

Technical Field

[0001] This application relates to the technical field of ship steam pipeline anti - impact, and particularly relates to a ship steam pipeline anti - impact adaptive limiting device. Background Art

[0002] As an important part of the ship power system driven by steam turbines, the steam pipeline system may be damaged under the impact of waves, collisions with other ships, etc. in the complex marine environment, directly affecting the safety of the ship power system, equipment, and the safety of the crew on board. Therefore, it is necessary to set limits at key positions of the steam pipeline to cope with external impacts.

[0003] In related technologies, generally, a hydraulic damper is used to limit the displacement of the pipeline under impact conditions. The steam pipeline deforms and undergoes thermal displacement under the action of factors such as hot - state operation, variable - condition operation, pressure fluctuations, and mechanical vibrations. Although the traditional hydraulic damper can extend or shorten following the deformation of the steam pipeline during operation, the hydraulic damper still adopts a rigid - contact design and contacts the pipeline during daily operation. Due to the stiffness of the damper itself, a sound - short - circuit phenomenon will occur, directly transmitting the vibration of the equipment and the vibration noise generated by the steam pipeline to the hull, affecting the acoustic performance and stability of the ship.

[0004] Therefore, there is an urgent need for a new device that can avoid rigid contact, prevent sound - short - circuit during daily operation, and effectively limit the displacement of the pipeline under impact conditions. Summary of the Invention

[0005] In view of the deficiencies or one of the deficiencies mentioned in the above - mentioned background art, the embodiments of this application provide a ship steam pipeline anti - impact adaptive limiting device, which can avoid rigid contact, prevent sound - short - circuit during daily operation, and effectively limit the displacement of the pipeline under impact conditions.

[0006] The embodiments of this application provide a ship steam pipeline anti - impact adaptive limiting device, including: A shock - absorbing damping mechanism, which includes a damper rotatably connected to the hull, and a pipe clamp connected to the damper and surrounding the pipeline. The inner diameter of the pipe clamp is larger than the outer diameter of the pipeline, and an annular gap is formed between the pipe clamp and the pipeline; A gap - maintaining mechanism, which is arranged on the pipe clamp and is used to prevent the inner side wall of the pipe clamp from contacting the outer side wall of the pipeline.

[0007] In some embodiments, the damper is hinged to the hull, and the gap - maintaining mechanism includes an extendable rod with adjustable length. The two ends of the extendable rod are respectively hinged to the hull and the pipe clamp.

[0008] In some embodiments, the number of the telescopic rods is at least two and they are distributed on both sides of the damper, and the telescopic rods on both sides and the hull form a triangular structure.

[0009] In some embodiments, the telescopic rod is an electric telescopic rod, and the gap maintaining mechanism further includes a distance sensor and a controller. The distance sensor is used to detect the gap distance between the pipe clamp and the pipeline, so that the controller can adjust the length of the electric telescopic rod according to the gap distance.

[0010] In some embodiments, the number of the distance sensors is multiple, and the multiple distance sensors are arranged on the pipe clamp or the pipeline and are distributed circumferentially.

[0011] In some embodiments, an elastic rod is fixed to the end of the telescopic rod, and the elastic rod is rotatably connected to the hull or the pipe clamp through a hinge.

[0012] In some embodiments, a disengaging mechanism is fixed to the end of the telescopic rod. The disengaging mechanism is rotatably connected to the hull or the pipe clamp through a hinge. The disengaging mechanism includes a connecting rod and a rod sleeve that are snap-connected to each other.

[0013] In some embodiments, the gap maintaining mechanism includes a first magnetic ring arranged on the pipe clamp and a second magnetic ring arranged on the pipeline and located inside the first magnetic ring. The first magnetic ring and the second magnetic ring interact with each other to keep an annular gap between the pipe clamp and the pipeline.

[0014] In some embodiments, the gap maintaining mechanism includes a plurality of jet nozzles arranged on the pipe clamp and distributed circumferentially. The jet nozzles apply thrust through jetting to keep an annular gap between the pipe clamp and the pipeline.

[0015] In some embodiments, the gap maintaining mechanism includes a pull rope for pulling the pipe clamp and an adjusting member for adjusting the length of the pull rope. The adjusting member changes the position of the pipe clamp by adjusting the length of the pull rope to keep an annular gap between the pipe clamp and the pipeline.

[0016] The beneficial effects brought by the technical solution provided in this application include: The embodiment of this application provides a shock-resistant adaptive limiting device for a ship steam pipeline. Due to the shock-absorbing damping mechanism, it includes a damper rotatably connected to the hull and a pipe clamp connected to the damper and surrounding the pipeline. The inner diameter of the pipe clamp is larger than the outer diameter of the pipeline and forms an annular gap with the pipeline; the gap maintaining mechanism is arranged on the pipe clamp, and the gap maintaining mechanism is used to prevent the inner side wall of the pipe clamp from contacting the outer side wall of the pipeline.

[0017] Therefore, during the daily operation of the hull, the pipe clamp connected to the damper can be prevented from contacting the steam pipeline, thereby preventing the vibration noise generated by the steam pipeline from being directly transmitted to the hull through the damper. Additionally, when the hull is impacted by a collision, the impact force is transmitted to the steam pipeline. When the amplitude of the steam pipeline exceeds the annular gap, the steam pipeline comes into contact with the pipe clamp, and the impact force is transmitted to the damper through the pipe clamp. The damper realizes buffering and energy consumption, thereby playing a role in protecting the steam pipeline. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Structural schematic diagram of the limiting device according to an embodiment of the present application; Figure 2 Installation schematic diagram of the telescopic rod according to an embodiment of the present application; Figure 3 Installation schematic diagram of the distance sensor according to an embodiment of the present application; Figure 4 Structural schematic diagram of the disengaging mechanism according to an embodiment of the present application; Figure 5 Installation schematic diagram of the magnetic ring according to an embodiment of the present application; Figure 6 Installation schematic diagram of the jet nozzle according to an embodiment of the present application.

[0020] In the drawings, the list of components represented by each reference numeral is as follows: 1, hull; 2, damper; 3, pipeline; 4, pipe clamp; 5, telescopic rod; 6, distance sensor; 7, controller; 8, connecting rod; 9, rod sleeve; 10, first magnetic ring; 11, second magnetic ring; 12, jet nozzle. Detailed Embodiments

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0022] In view of the deficiencies or one of the deficiencies proposed in the above background art, the embodiment of the present application provides a ship steam pipeline anti-shock adaptive limiting device, which can avoid rigid contact and prevent sound short-circuit during daily operation, and effectively limit the pipeline displacement under shock conditions.

[0023] See Figures 1 to 6 As shown, the embodiment of the present application provides a ship steam pipeline anti-shock adaptive limiting device, including: A shock-absorbing damping mechanism, which includes a damper 2 rotatably connected to the hull 1, and a pipe clamp 4 connected to the damper 2 and surrounding the pipeline 3. The inner diameter of the pipe clamp 4 is larger than the outer diameter of the pipeline 3 and forms an annular gap with the pipeline 3; A gap maintaining mechanism, which is arranged on the pipe clamp 4 and is used to prevent the inner side wall of the pipe clamp 4 from contacting the outer side wall of the pipeline 3.

[0024] The ship steam pipeline anti-shock adaptive limiting device of the embodiment of the present application is provided with a shock-absorbing damping mechanism and a gap maintaining mechanism. The shock-absorbing damping mechanism includes a damper 2 rotatably connected to the hull 1, a pipe clamp 4 fixedly connected to the damper 2 and surrounding the pipeline 3. The inner diameter of the pipe clamp 4 is larger than the outer diameter of the pipeline 3 and forms an annular gap with the pipeline 3. The gap maintaining mechanism is used to prevent the inner side wall of the pipe clamp 4 from contacting the outer side wall of the pipeline 3.

[0025] When the hull 1 is in daily operation, the vibration amplitude of the pipeline 3 is small and will not exceed the annular gap. Therefore, under the daily operation condition of the hull 1, the pipeline 3 can be non-contact with the pipe clamp 4 connected to the damper 2, thereby preventing the vibration noise generated by the steam pipeline from being directly transmitted to the hull 1 through the damper 2, playing a role in avoiding rigid contact during daily operation to prevent sound short-circuit.

[0026] When the hull 1 is impacted by an external object, the impact force is transmitted to the pipeline 3 through the hull 1, causing the vibration amplitude of the pipeline 3 to exceed the annular gap, resulting in the contact between the pipeline 3 and the pipe clamp 4. The impact force on the pipeline 3 is transmitted to the damper 2 through the pipe clamp 4, and the damper 2 buffers and consumes energy to protect the pipeline 3, thereby effectively limiting the displacement of the pipeline 3 under shock conditions.

[0027] Exemplarily, the damper 2 in this embodiment can be rotatably connected to the hull 1 through a spherical hinge or a common hinge seat. The damper 2 adopts a hydraulic damper. The pipe clamp 4 includes a connecting seat fixedly connected to the hydraulic damper and a U-shaped rod fixed on the connecting seat; the gap maintaining mechanism can adopt elastic tie rods or elastic ropes, and multiple elastic tie rods or elastic ropes are used to cooperate and pull the pipe clamp 4 at multiple angles to prevent the inner side wall of the pipe clamp 4 from contacting the outer side wall of the pipeline 3 and maintain the annular gap.

[0028] In some alternative embodiments: See Figures 1 to 6As shown in the figure, an anti-shock adaptive limiting device for a ship steam pipeline is provided in an embodiment of the present application. The damper 2 of the anti-shock adaptive limiting device for the ship steam pipeline is hinged to the hull 1. The clearance maintaining mechanism includes a telescopic rod 5 with adjustable length. The two ends of the telescopic rod 5 are respectively hinged to the hull 1 and the pipe clamp 4.

[0029] In the embodiment of the present application, the damper 2 is hinged to the hull 1 through a hinge seat. The two ends of the telescopic rod 5 of the clearance maintaining mechanism are respectively hinged to the hull 1 and the pipe clamp 4. The telescopic rod 5 can adopt an electric, pneumatic or hydraulic drive cylinder. The telescopic rod 5, the damper 2 and the hull 1 form a triangle. By adjusting the length of the telescopic rod 5, the position of the pipe clamp 4 connected to the telescopic rod 5 can be actively changed. Utilizing the stability of the triangle, the length of the telescopic rod 5 is locked, thereby locking the position of the pipe clamp 4, so that an annular clearance is maintained between the pipe clamp 4 and the pipeline 3.

[0030] In some alternative embodiments: Refer to Figures 1 to 6 As shown in the figure, an anti-shock adaptive limiting device for a ship steam pipeline is provided in an embodiment of the present application. The number of telescopic rods 5 of the anti-shock adaptive limiting device for the ship steam pipeline is at least two and is distributed on both sides of the damper 2. The telescopic rods 5 on both sides form a triangular structure with the hull 1.

[0031] In the embodiment of the present application, the number of telescopic rods 5 is two and is distributed on both sides of the damper 2. The two ends of the two telescopic rods 5 are respectively hinged to the hull 1 and the pipe clamp 4, forming a triangle with the hull 1. By adjusting the lengths of the telescopic rods 5 on both sides, the position of the pipe clamp 4 connected to the telescopic rods 5 can be actively changed. Utilizing the stability of the triangle, the lengths of the telescopic rods 5 on both sides are locked, thereby locking the position of the pipe clamp 4, so that an annular clearance is maintained between the pipe clamp 4 and the pipeline 3. Exemplarily, the annular clearance formed between the pipe clamp 4 and the pipeline 3 in this embodiment is greater than 0 and does not exceed 2 mm.

[0032] In some alternative embodiments: Refer to Figures 1 to 6 As shown in the figure, an anti-shock adaptive limiting device for a ship steam pipeline is provided in an embodiment of the present application. The telescopic rod 5 of the anti-shock adaptive limiting device for the ship steam pipeline is an electric telescopic rod. The clearance maintaining mechanism further includes a distance sensor 6 and a controller 7. The distance sensor 6 is used to detect the clearance distance between the pipe clamp 4 and the pipeline 3, so that the controller 7 can adjust the length of the electric telescopic rod according to the clearance distance.

[0033] In the embodiment of the present application, the telescopic rod 5 is an electric telescopic rod. The electric telescopic rod and the distance sensor 6 are both electrically connected to the controller 7. The distance sensor 6 is installed inside the pipe clamp 4 and is used to detect the clearance distance from the inner side wall of the pipe clamp 4 to the outer side wall of the pipeline 3, and cooperate with the controller 7 to adjust the length of the electric telescopic rod in real time, so that an annular clearance is maintained between the pipe clamp 4 and the pipeline 3.

[0034] It should be noted that when the hull 1 is in normal operation, the vibration amplitude and vibration speed of the pipeline 3 are small, and the controller 7 has sufficient reaction speed to adjust the length of the electric telescopic rod, so that an annular gap is maintained between the pipe clamp 4 and the pipeline 3. Therefore, under normal operating conditions of the hull 1, the pipeline 3 can be not in contact with the pipe clamp 4 connected to the damper 2, thereby preventing the vibration noise generated by the steam pipeline from being directly transmitted to the hull 1 through the damper 2, playing a role in avoiding rigid contact during normal operation to prevent acoustic short-circuit.

[0035] When the hull 1 is impacted by an external object, the impact force is transmitted to the pipeline 3 through the hull 1, making the vibration amplitude and vibration speed of the pipeline 3 far exceed the reaction speed of the controller 7 to adjust the electric telescopic rod. The pipeline 3 will contact the pipe clamp 4, and the impact force on the pipeline 3 can be transmitted to the damper 2 through the pipe clamp 4. The damper 2 buffers and dissipates energy to protect the pipeline 3, thereby effectively limiting the displacement of the pipeline 3 under impact conditions.

[0036] In some alternative embodiments: Refer to Figures 1 to 6 As shown, the embodiment of the present application provides a shock-resistant adaptive limit device for a ship steam pipeline. The number of distance sensors 6 of the shock-resistant adaptive limit device for a ship steam pipeline is multiple, and the multiple distance sensors 6 are arranged on the pipe clamp 4 or the pipeline 3 and distributed circumferentially.

[0037] In the embodiment of the present application, the number of the distance sensors 6 is set to four. The four distance sensors 6 are all embedded inside the pipe clamp 4 and are equally spaced in a ring shape. The four distance sensors 6 are respectively located on the upper, lower, left, and right sides of the pipeline 3, and the gap distances Y1, Y2, X1, and X2 in the up, down, left, and right four directions can be measured in sequence.

[0038] Exemplarily, when Y1 < Y2 and X1 > X2, the length of the telescopic rod 5 can be adjusted to control the pipe clamp 4 to first translate longitudinally and then laterally or first laterally and then longitudinally, so that the center of the pipe clamp 4 returns to the central axis of the pipeline 3. For example, first control the pipe clamp 4 to translate leftward by 0.5(X1 - X2). After updating the values of Y1, Y2, X1, and X2 and determining that the gaps in the left and right directions are equal, then control the pipe clamp 4 to translate downward by 0.5(Y2 - Y1). Finally, update the gap distances in the up, down, left, and right four directions again to determine that the center of the pipe clamp 4 returns to the central axis of the pipeline 3.

[0039] In some other embodiments, two electric telescopic rods are symmetrically installed and form a triangle with the hull 1, and the movement strokes ΔL1 and ΔL2 of the two electric telescopic rods can be converted by the following formula. When X1 = X2 and Y1 = Y2, both ΔL1 and ΔL2 are 0, that is, the gap adjustment is completed; ; Wherein, Y1, Y2, X1, and X2 are the clearance distances in the up, down, left, and right directions respectively, S is the distance between the hinge points of the two electric telescopic rods and the hull 1, L + ΔL1 is the distance between the hinge points at both ends of the left electric telescopic rod, and L + ΔL2 is the distance between the hinge points at both ends of the right electric telescopic rod.

[0040] It should be noted that the above clearance adjustment actions are continuously repeated. After each adjustment, the values of Y1, Y2, X1, and X2 can be updated for verification. Even if there is a misalignment error between the center position of the pipe clamp 4 and the central axis of the pipeline 3 after adjustment according to the action strokes ΔL1 and ΔL2, Y1, Y2, X1, and X2 can be obtained again to update ΔL1 and ΔL2, and the adjustment can be carried out again. That is, after multiple updates and adjustments, the center position of the pipe clamp 4 can approach the central axis of the pipeline 3, and finally the situation of X1 = X2 and Y1 = Y2 can be satisfied.

[0041] In some alternative embodiments: Refer to Figures 1 to 6 As shown, the embodiment of the present application provides a ship steam pipeline anti-shock adaptive limiting device. An elastic rod is fixed to the end of the telescopic rod 5 of the ship steam pipeline anti-shock adaptive limiting device, and the elastic rod is rotatably connected to the hull 1 or the pipe clamp 4 through a hinge.

[0042] An elastic rod is fixed to the end of the telescopic rod 5 in the embodiment of the present application. The elastic rod is rotatably connected to the hull 1 or the pipe clamp 4 through a hinge. The elastic rod can be arranged at both ends or any one end of the telescopic rod 5. The elastic rod can undergo telescopic deformation under the impact condition of the hull 1, which can prevent the telescopic rod 5 from locking the position of the pipe clamp 4, and can effectively protect the pipeline 3 by only restricting the displacement of the pipeline 3 without buffering energy consumption. Exemplarily, the elastic rod can be a rubber rod, a spring rod, or a rod-shaped spring.

[0043] Specifically, when the hull 1 is in the daily working condition, the telescopic rod 5 can transmit tensile force or supporting force through the elastic rod, and thus does not affect the adjustment of the position of the pipe clamp 4; when the hull 1 is impacted by an external object, the impact force is transmitted to the pipeline 3 through the hull 1, causing the vibration amplitude of the pipeline 3 to exceed the annular clearance, resulting in the contact between the pipeline 3 and the pipe clamp 4. The impact force on the pipeline 3 is transmitted to the damper 2 through the pipe clamp 4, and the telescopic rod 5 undergoes telescopic deformation accordingly. The pipe clamp 4 will not be locked by the telescopic rod 5, enabling the damper 2 to expand and contract to buffer energy consumption, thereby restricting the displacement of the pipeline 3 under the impact condition and effectively protecting the pipeline 3 at the same time.

[0044] In some alternative embodiments: Refer to Figures 1 to 6 As shown, the embodiment of the present application provides a ship steam pipeline anti-shock adaptive limiting device. A disengaging mechanism is fixed to the end of the telescopic rod 5 of the ship steam pipeline anti-shock adaptive limiting device, and the disengaging mechanism is rotatably connected to the hull 1 or the pipe clamp 4 through a hinge. The disengaging mechanism includes a connecting rod 8 and a rod sleeve 9 that are snap-connected to each other.

[0045] At the end of the telescopic rod 5 in the embodiment of the present application, a disconnection mechanism is fixed. The disconnection mechanism is rotatably connected to the hull 1 or the pipe clamp 4 through a hinge. The disconnection mechanism can be arranged at both ends or any one end of the telescopic rod 5. The disconnection mechanism can be separated or misaligned and shortened when the hull 1 is impacted, which can prevent the telescopic rod 5 from locking the position of the pipe clamp 4, so that only the displacement of the pipeline 3 can be restricted and the energy consumption cannot be buffered, effectively protecting the pipeline 3.

[0046] Specifically, the disconnection mechanism includes a connecting rod 8 and a rod sleeve 9 that are snap-connected to each other. The end of the telescopic rod 5 is fixedly connected to the rod sleeve 9. The connecting rod 8 is rotatably connected to the hull 1 or the pipe clamp 4 through a hinge. Since the connecting rod 8 and the rod sleeve 9 are snap-connected to each other, when the hull 1 is in the daily working condition, the tensile force or the supporting force can be transmitted through the connecting rod 8 and the rod sleeve 9, and thus the position of the pipe clamp 4 is not affected during adjustment; When the hull 1 is impacted by an external object, the impact force transmitted to the connecting rod 8 or the rod sleeve 9 will exceed the snap-locking force between the connecting rod 8 and the rod sleeve 9, causing the connecting rod 8 to separate from the rod sleeve 9 or the connecting rod 8 to further slide into the rod sleeve 9, thereby preventing the telescopic rod 5 from locking the position of the pipe clamp 4, enabling the damper 2 to expand and contract to buffer energy consumption, and thus restricting the displacement of the pipeline 3 under the impact condition while effectively protecting the pipeline 3.

[0047] In some alternative embodiments: Refer to Figures 1 to 6 As shown, the embodiment of the present application provides a ship steam pipeline anti-impact adaptive limiting device. The clearance maintaining mechanism of the ship steam pipeline anti-impact adaptive limiting device includes a first magnetic ring 10 arranged on the pipe clamp 4 and a second magnetic ring 11 arranged on the pipeline 3 and located inside the first magnetic ring 10. The first magnetic ring 10 and the second magnetic ring 11 interact with each other to keep an annular clearance between the pipe clamp 4 and the pipeline 3.

[0048] In the embodiment of the present application, the first magnetic ring 10 is embedded in the inner side wall of the pipe clamp 4, and the second magnetic ring 11 is embedded in the outer side wall of the pipeline 3. The second magnetic ring 11 is located inside the first magnetic ring 10. Both the first magnetic ring 10 and the second magnetic ring 11 can be formed by splicing arc-shaped magnetic blocks. By using the mutual repulsive force between the first magnetic ring 10 and the second magnetic ring 11, an annular clearance can be maintained between the pipe clamp 4 and the pipeline 3.

[0049] Specifically, when the hull 1 is operating normally, the vibration amplitude of the pipeline 3 is small and the impact force received is small. The mutual repulsive force between the first magnetic ring 10 and the second magnetic ring 11 can keep an annular clearance between the pipe clamp 4 and the pipeline 3. Therefore, under the daily operating condition of the hull 1, the pipeline 3 does not contact the pipe clamp 4 connected to the damper 2, thereby preventing the vibration noise generated by the steam pipeline from being directly transmitted to the hull 1 through the damper 2, playing a role in avoiding rigid contact during daily operation to prevent acoustic short-circuiting.

[0050] When the hull 1 is impacted by an external object, the impact force is transmitted through the hull 1 to the pipeline 3. The impact force received by the pipeline 3 is relatively large, causing the vibration amplitude and vibration speed of the pipeline 3 to increase. The pipeline 3 can overcome the mutual repulsive force between the first magnetic ring 10 and the second magnetic ring 11 and come into contact with the pipe clamp 4. The impact force on the pipeline 3 is transmitted through the pipe clamp 4 to the damper 2, and the damper 2 buffers and dissipates energy to protect the pipeline 3, thereby effectively restricting the displacement of the pipeline 3 under impact conditions.

[0051] In some alternative embodiments: Refer to Figures 1 to 6 As shown, the embodiment of the present application provides a shock-resistant and self-adaptive limiting device for a ship steam pipeline. The clearance maintaining mechanism of the shock-resistant and self-adaptive limiting device for the ship steam pipeline includes a plurality of jet nozzles 12 arranged on the pipe clamp 4 and distributed circumferentially. The jet nozzles 12 apply a thrust through jetting to maintain an annular clearance between the pipe clamp 4 and the pipeline 3.

[0052] Inside the pipe clamp 4 of the embodiment of the present application, a plurality of jet nozzles 12 facing the pipeline 3 are embedded. The plurality of jet nozzles 12 are distributed at equal intervals in a ring shape. The gas ejected from the plurality of jet nozzles 12 can generate a force acting on the pipeline 3. Due to the mutual action of forces, a reverse thrust will be generated and act on the pipe clamp 4. By controlling the pressure of the ejected gas and keeping the reverse thrust at an appropriate magnitude, an annular clearance can be maintained between the pipe clamp 4 and the pipeline 3.

[0053] Specifically, when the hull 1 is operating normally, the vibration amplitude of the pipeline 3 is small, and the impact force received is small. The reverse thrust generated by the ejected gas acts on the pipe clamp 4, which can keep an annular clearance between the pipe clamp 4 and the pipeline 3. Therefore, under the normal operating conditions of the hull 1, the pipeline 3 can be non-contact with the pipe clamp 4 connected to the damper 2, thereby preventing the vibration noise generated by the steam pipeline from being directly transmitted to the hull 1 through the damper 2, playing a role in avoiding rigid contact during normal operation to prevent acoustic short circuit.

[0054] When the hull 1 is impacted by an external object, the impact force is transmitted through the hull 1 to the pipeline 3. The impact force received by the pipeline 3 is relatively large, causing the vibration amplitude and vibration speed of the pipeline 3 to increase. The pipeline 3 can overcome the mutual repulsive force between the first magnetic ring 10 and the second magnetic ring 11 and come into contact with the pipe clamp 4. The impact force on the pipeline 3 is transmitted through the pipe clamp 4 to the damper 2, and the damper 2 buffers and dissipates energy to protect the pipeline 3, thereby effectively restricting the displacement of the pipeline 3 under impact conditions.

[0055] In some alternative embodiments: Refer to Figures 1 to 6As shown in the figure, an embodiment of the present application provides a shock-resistant and self-adaptive limiting device for a ship's steam pipeline. The gap maintaining mechanism of the shock-resistant and self-adaptive limiting device for a ship's steam pipeline includes a pull rope for pulling the pipe clamp 4 and an adjusting component for adjusting the length of the pull rope. The adjusting component changes the position of the pipe clamp 4 by adjusting the length of the pull rope so as to maintain an annular gap between the pipe clamp 4 and the pipeline 3.

[0056] The gap maintaining mechanism of the embodiment of the present application includes a pull rope and an adjusting component (not shown in the figure). Exemplarily, the adjusting component can adopt an automatic wire winder fixed on the hull 1. By arranging two pull ropes to pull the pipe clamp 4, the two pull ropes are symmetrically distributed on both sides of the damper 2 and form an angle greater than ninety degrees with the damper 2. Two automatic wire winders are used to wind up the pull ropes on both sides respectively to tighten the pull ropes to maintain the position of the pipe clamp 4, so as to maintain an annular gap between the pipe clamp 4 and the pipeline 3.

[0057] When the hull 1 is operating normally, the vibration amplitude of the pipeline 3 is small and will not exceed the annular gap. Therefore, under the normal operating conditions of the hull 1, the pipeline 3 can be non-contact with the pipe clamp 4 connected to the damper 2, thereby preventing the vibration noise generated by the steam pipeline from being directly transmitted to the hull 1 through the damper 2, playing a role in avoiding rigid contact during normal operation to prevent acoustic short-circuit.

[0058] When the hull 1 is impacted by an external object, the impact force is transmitted to the pipeline 3 through the hull 1, causing the vibration amplitude of the pipeline 3 to exceed the annular gap, resulting in contact between the pipeline 3 and the pipe clamp 4. The impact force on the pipeline 3 is transmitted to the damper 2 through the pipe clamp 4, and the damper 2 buffers and dissipates energy to protect the pipeline 3, thereby effectively limiting the displacement of the pipeline 3 under impact conditions.

[0059] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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 therefore cannot be understood as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" 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 it 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 application can be understood according to specific circumstances.

[0060] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0061] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather will conform to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A shock-resistant and self-adaptive limiting device for a ship's steam pipeline, characterized in that Comprising: A shock absorption damping mechanism, which includes a damper (2) rotatably connected to the hull (1), and a pipe clamp (4) connected to the damper (2) and surrounding the pipe (3). The inner diameter of the pipe clamp (4) is larger than the outer diameter of the pipe (3), and an annular gap is formed between the pipe clamp (4) and the pipe (3); A gap maintaining mechanism, which is arranged on the pipe clamp (4), and is used to keep the inner side wall of the pipe clamp (4) from contacting the outer side wall of the pipe (3).

2. The shock-resistant and self-adaptive limit device for ship steam pipes according to claim 1, characterized in that: The damper (2) is hinged to the hull (1), and the gap maintaining mechanism includes a telescopic rod (5) with adjustable length. The two ends of the telescopic rod (5) are respectively hinged to the hull (1) and the pipe clamp (4).

3. The shock-resistant and self-adaptive limit device for ship steam pipes according to claim 2, characterized in that: The number of the telescopic rods (5) is at least two and they are distributed on both sides of the damper (2). The telescopic rods (5) on both sides and the hull (1) form a triangular structure.

4. The shock-resistant and self-adaptive limit device for ship steam pipes according to claim 2 or 3, characterized in that: The telescopic rod (5) is an electric telescopic rod, and the gap maintaining mechanism further includes a distance sensor (6) and a controller (7). The distance sensor (6) is used to detect the gap distance between the pipe clamp (4) and the pipe (3), so that the controller (7) can adjust the length of the electric telescopic rod according to the gap distance.

5. The shock-resistant and self-adaptive limit device for ship steam pipes according to claim 4, characterized in that: The number of the distance sensors (6) is multiple, and the multiple distance sensors (6) are arranged on the pipe clamp (4) or the pipe (3) and are distributed circumferentially.

6. The shock-resistant and self-adaptive limit device for ship steam pipes according to claim 2 or 3, characterized in that: An elastic rod is fixed to the end of the telescopic rod (5), and the elastic rod is rotatably connected to the hull (1) or the pipe clamp (4) through a hinge.

7. The shock-resistant and self-adaptive limit device for ship steam pipes according to claim 2 or 3, characterized in that: A disengagement mechanism is fixed to the end of the telescopic rod (5), and the disengagement mechanism is rotatably connected to the hull (1) or the pipe clamp (4) through a hinge. The disengagement mechanism includes a connecting rod (8) and a rod sleeve (9) which are snap-connected to each other.

8. The shock-resistant and self-adaptive limit device for ship steam pipes according to claim 1, characterized in that: The gap maintaining mechanism includes a first magnetic ring (10) arranged on the pipe clamp (4), and a second magnetic ring (11) arranged on the pipe (3) and located inside the first magnetic ring (10). The first magnetic ring (10) and the second magnetic ring (11) interact with each other to keep an annular gap between the pipe clamp (4) and the pipe (3).

9. The shock-resistant and self-adaptive limit device for ship steam pipes according to claim 1, characterized in that: The gap maintaining mechanism includes a plurality of jet nozzles (12) arranged circumferentially on the pipe clamp (4), and the jet nozzles (12) apply a thrust through jetting to maintain an annular gap between the pipe clamp (4) and the pipeline (3).

10. The ship steam pipeline anti-shock adaptive limit device according to claim 1, characterized in that: The gap maintaining mechanism includes a pull rope for pulling the pipe clamp (4), and an adjusting component for adjusting the length of the pull rope. The adjusting component changes the position of the pipe clamp (4) by adjusting the length of the pull rope so as to maintain an annular gap between the pipe clamp (4) and the pipeline (3).

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