Hose saddle slow descending system

Abstract

The invention discloses a hose saddle slow descending system, belongs to the technical field of ship filling equipment, is applied to a ship filling system, and is suitable for emergency falling slow descending protection of a filling hose after an active safety separation device is separated. The device is provided with the descent control device, the descent control device can be compactly installed in a shore-based saddle or a ship saddle, through cooperation of a planetary gear transmission mechanism and a centrifugal friction damping structure, friction resistance can be adjusted in a self-adaptive mode according to the descending speed of a hose separation part, and constant-speed slow descending is achieved; meanwhile, the device has the advantages of being simple in structure, timely in transmission response, high in shore-ship two-way working condition adaptability and high in generalization degree, effectively solves the protection problem of accidental falling of the hose in the two-way filling operation, and guarantees safe operation of shore-to-ship and ship-to-shore filling operation.

Description

Technical Field

[0001] This invention relates to the field of marine refueling equipment technology, specifically to a hose saddle slow descent system, which is particularly suitable for slow descent protection of the refueling hose after the active safety release device has been disengaged. Background Technology

[0002] Ship refueling is a crucial part of ship operation. The refueling hose, as a core component for media transmission, is typically mounted at both ends on dedicated saddles on the refueling end (shore base or refueling vessel) and the receiving vessel, respectively. It is a critical stress point in the refueling system. On the refueling end side, the refueling hose is connected to the ship's active safety disengagement device. During actual refueling operations, factors such as wind, ship swaying, fluctuations in refueling medium pressure, equipment operational deviations, or unexpected external impacts can cause the relative distance between the refueling end and the receiving vessel to abnormally increase. When the distance exceeds the preset safety threshold of the ship's refueling system, the active safety disengagement device triggers an automatic separation action. The separated components can then automatically seal immediately, preventing damage to the refueling hose due to excessive pulling or media leakage from the outset. However, after the active safety disconnect device completes the separation, the refueling hose will fall rapidly and freely under the combined action of its own weight, the gravity of the medium inside the hose, and the inertia of the fall. This can easily cause damage such as impact, bending, and tearing to the disconnection part of the active safety disconnect device, the refueling hose body, and other equipment, which may lead to medium leakage, equipment failure, or even more serious operational safety accidents.

[0003] Currently, there are very few measures to mitigate the fall of refueling hoses after detachment. Traditional protective methods rely solely on emergency handling by operators or simple limiting structures. These methods cannot effectively control the fall speed of the refueling hose, are difficult to adapt to the dynamic operating conditions of ship refueling operations, and cannot prevent impact damage from the rapid fall of the refueling hose, which can easily lead to safety accidents such as equipment damage and media leakage. Therefore, there is an urgent need for a hose saddle-based slow-descent system adapted to ship refueling systems to achieve slow-descent protection after the refueling hose detaches. Summary of the Invention

[0004] The purpose of this invention is to provide a hose saddle slow descent system adapted to a ship refueling system, which enables slow descent protection of the refueling hose after the active safety release device is triggered.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A hose saddle-mounted descent system, applied in a ship refueling system, includes a descent device and a saddle. The saddle is fixedly mounted at the refueling end and supports the refueling hose. An active safety release device is connected to one end of the refueling hose on the saddle. The descent device is disposed within the internal cavity of the saddle and includes a base, a centrifugal shaft assembly, and a reel. The base is fixedly connected to the saddle, and a left support and a right support are fixedly connected to both ends of the base, respectively. The centrifugal shaft assembly is rotatably connected to the left and right supports at both ends. The reel is coaxial with the centrifugal shaft assembly and rotatably connected to the centrifugal shaft assembly at both ends. A planetary gear is mounted on the left support, and the planetary gear meshes with the reel and the centrifugal shaft assembly for transmission. The centrifugal shaft assembly is provided with a radially sliding centrifugal block, and a fixed surface is provided on the outer surface of the centrifugal block. Equipped with friction plates, the reel has a rope groove on its outer circumference and a rope wound around it. One end of the rope is fixed to the reel, and the other end leads out of the decelerator and is fixedly connected to the hose detachment part of the active safety detachment device. During normal refueling operations, the rope is in a slack or slightly tensioned state. When the receiving vessel drifts due to an accident, causing the distance between the receiving vessel and the refueling end to exceed the safety threshold set by the ship's refueling system and triggering the active safety detachment device to separate its left and right parts, the hose detachment part of the active safety detachment device falls under the action of gravity, causing the rope to be pulled out quickly and driving the reel to rotate. The power is transmitted to the centrifugal shaft assembly through the planetary gears and drives the centrifugal block to perform centrifugal motion. The friction plates rub against the inner wall of the reel, generating damping force, slowing down the rotation speed of the reel, and realizing the slow descent of the hose detachment part.

[0006] Furthermore, a first bearing is fixedly installed inside the left and right supports. The centrifugal shaft assembly includes a sun gear shaft. Both ends of the sun gear shaft are rotatably connected to the left and right supports through the first bearings. A centrifugal block bearing cover is fixedly installed near the left end of the sun gear shaft. A second bearing is fixedly installed on the centrifugal block bearing cover. A third bearing is fixedly installed on the right side of the reel. The sun gear shaft is rotatably connected to the reel through the second and third bearings.

[0007] Furthermore, the left support is fixedly provided with three planetary gears arranged in a triangular pattern. The planetary gears can rotate freely and do not mesh with each other. The left end of the sun gear shaft is fixedly provided with a sun gear, which is located between the three planetary gears and meshes with them simultaneously. The left end of the reel is fixedly connected with an internal gear ring, and the three planetary gears are located inside the internal gear ring and mesh with it simultaneously.

[0008] Furthermore, three first limiting stops are evenly distributed on the right side of the centrifugal block bearing cover, and the sun gear shaft is also fixedly equipped with a centrifugal block cover. A second limiting stop corresponding to the position of the first limiting stops is provided on the left side of the centrifugal block cover. Three centrifugal blocks are placed between the centrifugal block bearing cover and the centrifugal block cover. The centrifugal blocks are fan-shaped and located in the radial groove formed by the first and second limiting stops. The friction plate is fixedly connected to the outer circular surface of the centrifugal block by screws.

[0009] Furthermore, the sun gear shaft is provided with a square shaft section, and a shoulder is provided between the square shaft section and the sun gear. The central hole of the centrifugal block bearing cover is a combination of a round hole and a first square hole. The round hole is fitted onto the shoulder, and the first square hole is fitted onto the square shaft section. The centrifugal block cover has a second square hole in its center, which is fitted onto the square shaft section. The left end of the centrifugal block bearing cover is close to the end face of the sun gear. A centrifugal block positioning sleeve and a limiting sleeve are passed through the square shaft section. The two ends of the centrifugal block positioning sleeve are close to the centrifugal block bearing cover and the centrifugal block cover, respectively. The two ends of the limiting sleeve are close to the centrifugal block cover and the third bearing, respectively.

[0010] Furthermore, a square head is fixedly provided at one end of the sun gear shaft on the right support, and a handle is sleeved on the square head.

[0011] Furthermore, a buffer seat is fixedly installed at the end of the saddle near the active safety release device. The buffer seat has a window for the rope to pass through, and an elastic pad is fixedly installed on the upper surface of the buffer seat.

[0012] Compared with the prior art, the beneficial effects of the present invention are: This invention is equipped with a descent device that can be compactly installed inside a shore-based saddle or a ship's saddle. Through the cooperation of a planetary gear transmission mechanism and a centrifugal friction damping structure, it can adaptively adjust the friction resistance according to the descent speed of the hose detachment point, achieving uniform and slow descent. It also features a simple structure, timely transmission response, high adaptability to both shore and ship operating conditions, and strong versatility. It effectively solves the problem of preventing accidental hose falls during bidirectional refueling operations, ensuring the safe conduct of shore-to-ship and ship-to-shore refueling operations. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the installation of the flexible hose saddle descent system of the present invention; Figure 2 This is a three-dimensional structural diagram of the decelerator of the present invention; Figure 3 This is a half-sectional schematic diagram of the decelerator of the present invention; Figure 4 This is a schematic diagram of the exploded structure of the decelerator of the present invention (I); Figure 5This is a schematic diagram (II) of the explosive structure of the decelerator of the present invention; Figure 6 This is an exploded structural diagram of the centrifugal shaft assembly of the present invention.

[0014] In the diagram: 1-Left support, 1-1-Planetary gear, 2-Centrifuge shaft assembly, 2-1-Sun gear shaft, 2-2-Sun gear, 2-3-Square shaft section, 2-4-Square head, 2-5-Second bearing, 2-6-Centrifuge block bearing cover, 2-6A-First limit stop, 2-6B-First square hole, 2-7-Centrifuge block positioning sleeve, 2-8-Centrifuge block, 2-9-Friction pad, 2-10-Screw, 2-11-Centrifuge block cover, 2-11A-Second square hole, 2-11B-Second limit stop, 2-12-Limit sleeve, 2-13-Third bearing, 3-Reel, 3-1-Internal gear ring, 4-Right support, 5-Handle, 6-Base, 7-Rope, 8-Saddle, 8-1-Buffer seat, 8-2-Window, 8-3-Elastic pad, 9-Active safety release device, 10-Addition hose, 11-First bearing. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0016] Please see Figures 1-6 One embodiment provided by the present invention: A hose saddle descent system is applied to a ship refueling system, including a descent device and a saddle 8. The saddle 8 is fixedly installed at the refueling end (shore base or refueling vessel). The saddle 8 supports the refueling hose 10. An active safety disconnect device 9 is connected to one end of the refueling hose 10 on the saddle 8. The active safety disconnect device is detailed in our patent application No. 202610239764.9: A FanERC Ship Refueling Active Safety Disconnect Device. Its function is to automatically disconnect and close the pipeline in an emergency, which will not be described in detail here. The descent device is housed within the internal cavity of the saddle 8, saving operating space and enhancing equipment safety. The descent device includes a base 6, a centrifugal shaft assembly 2, and a reel 3. The base 6 serves as the mounting base and is fixedly connected to the saddle 8. Left supports 1 and right supports 4 are fixedly connected to both ends of the base 6. The centrifugal shaft assembly 2 is rotatably connected to both ends of the left and right supports 1 and 4. The reel 3 is coaxial with the centrifugal shaft assembly 2 and rotatably connected to both ends of the centrifugal shaft assembly 2. A planetary gear 1-1 is mounted on the left support 1, which meshes with the reel 3 and the centrifugal shaft assembly 2 for transmission. The centrifugal shaft assembly 2 has radially sliding centrifugal blocks 2-8, with friction plates 2-9 fixedly mounted on their outer surface. The outer circumference of the reel 3 has a rope groove and a rope 7 is wound around it. One end of the rope 7 is fixed to the reel 3, and the other end extends outside the descent device and is disconnected from the active safety disengagement device. The hose detachment part of the active safety detachment device 9 (i.e., the right half after the active safety detachment device 9 is separated, which is fixedly connected to the refueling hose 10 and falls down together with the refueling hose 10) is fixedly connected. During normal refueling operations, the rope 7 is in a slack or slightly tensioned state. When the receiving vessel drifts due to an accident, causing the distance between the receiving vessel and the refueling end to exceed the safety threshold set by the ship refueling system and triggering the active safety detachment device 9 to separate its left and right parts, the hose detachment part of the active safety detachment device 9 instantly loses its restraint and falls under the action of gravity, which drives the rope 7 to be pulled out quickly and drives the reel 3 to rotate. The power is transmitted to the centrifugal shaft assembly 2 through the planetary gear 1-1 and drives the centrifugal block 2-8 to perform centrifugal motion. The friction plate 2-9 rubs against the inner wall of the reel 3, generating a damping force, which slows down the rotation speed of the reel 3 and realizes the slow descent of the hose detachment part.

[0017] The left support 1 and the right support 4 are fixedly equipped with a first bearing 11. The centrifugal shaft assembly 2 includes a sun gear shaft 2-1. The two ends of the sun gear shaft 2-1 are rotatably connected to the left support 1 and the right support 4 through the first bearing 11. The sun gear shaft 2-1 is fixedly equipped with a centrifugal block bearing cover 2-6 near the left end. The centrifugal block bearing cover 2-6 is fixedly equipped with a second bearing 2-5. The right side of the reel 3 is fixedly equipped with a third bearing 2-13. The sun gear shaft 2-1 is rotatably connected to the reel 3 through the second bearing 2-5 and the third bearing 2-13.

[0018] Three planetary gears 1-1 arranged in a triangular pattern are fixedly mounted on the left support 1, ensuring the uniformity and stability of power transmission and avoiding the force concentration problem of single gear transmission. The planetary gears 1-1 can rotate freely and do not mesh with each other. A sun gear 2-2 is fixedly mounted on the left end of the sun gear shaft 2-1, located between the three planetary gears 1-1 and meshing with them simultaneously. An internal gear ring 3-1 is fixedly connected to the left end of the reel 3, with the three planetary gears 1-1 located within the internal gear ring 3-1 and meshing with it simultaneously. Thus, a defined transmission ratio is formed between the reel 3 (as the input end) and the centrifugal shaft assembly 2 (as the output end) through the planetary gear mechanism. Due to the speed-increasing effect of the planetary gears, the rotational speed of the centrifugal shaft assembly 2 will be higher than that of the reel 3, thereby amplifying the centrifugal effect and improving the damping sensitivity.

[0019] Three first limit stops 2-6A are evenly distributed on the right side of the centrifugal block bearing cover 2-6. A centrifugal block cover 2-11 is also fixedly installed on the sun gear shaft 2-1. A second limit stop 2-11B corresponding to the position of the first limit stop 2-6A is provided on the left side of the centrifugal block cover 2-11. Three centrifugal blocks 2-8 are placed between the centrifugal block bearing cover 2-6 and the centrifugal block cover 2-11. The centrifugal blocks 2-8 are fan-shaped and are located in the radial grooves formed by the first limit stops 2-6A and the second limit stops 2-11B. The grooves play a role in circumferential positioning and radial guidance for the centrifugal blocks 2-8, ensuring that they maintain the correct posture during sliding. The friction plate 2-9 is evenly attached to the inner wall of the reel 3. The friction plate 2-9 is fixedly connected to the outer surface of the centrifugal block 2-8 by screws 2-10. The head of the screw 2-10 is lower than the outer surface of the friction plate 2-9 to avoid direct contact between the screw 2-10 and the inner wall of the reel 3.

[0020] To ensure precise axial positioning of all components, the sun gear shaft 2-1 is provided with a square shaft section 2-3. A shoulder is provided between the square shaft section 2-3 and the sun gear 2-2. The center hole of the centrifugal block bearing cover 2-6 is a combination of a round hole and a first square hole 2-6B. The round hole fits onto the shoulder, and the first square hole 2-6B fits onto the square shaft section 2-3, achieving circumferential fixation and ensuring synchronous power transmission. The centrifugal block cover 2-11 has a second square hole 2-11A at its center. The second square hole 2-11A fits onto the square shaft section 2-3, achieving circumferential fixation. The left end of the retaining cover 2-6 is close to the end face of the sun gear 2-2. The square shaft section 2-3 is provided with a centrifugal block positioning sleeve 2-7 and a limiting sleeve 2-12. The two ends of the centrifugal block positioning sleeve 2-7 are close to the centrifugal block bearing cover 2-6 and the centrifugal block cover 2-11 respectively, precisely controlling the distance between them to reserve a suitable axial clearance for the centrifugal block 2-8, so that it can slide freely in the radial direction without jamming. The two ends of the limiting sleeve 2-12 are close to the centrifugal block cover 2-11 and the third bearing 2-13 respectively, providing auxiliary support and positioning for the centrifugal block cover 2-11.

[0021] The sun gear shaft 2-1 has a square head 2-4 machined at one end of the right support 4. The square head 2-4 is fitted with a handle 5 for manually retrieving the hose detachment part of the active safety detachment device 9.

[0022] A buffer seat 8-1 is fixedly installed at one end of the saddle 8 near the active safety release device 9. The buffer seat 8-1 has a window 8-2 for the rope 7 to pass through. The edges of the window 8-2 are rounded to avoid cutting the rope. An elastic pad 8-3 is fixedly installed on the upper surface of the buffer seat 8-1. When the hose release part slowly descends to the bottom, it first contacts the elastic pad 8-3 to obtain the final cushion, avoiding rigid collision with the saddle 8, and realizing flexible protection throughout the entire process from fall to stop.

[0023] The specific working process is as follows: After the active safety release device 9 is separated, the hose release part of the active safety release device 9 and the filling hose 10 fall under the action of gravity, the rope 7 is pulled out, and the reel 3 is rotated. The internal gear ring 3-1 of the reel 3 drives the planetary gear 1-1 on the left support assembly 1 to rotate. The planetary gear 1-1 then drives the sun gear shaft 2-1 to rotate through the sun gear 2-2. Since the sun gear shaft 2-1 is fixedly connected to the centrifugal block bearing cover 2-6 and the centrifugal block cover 2-11 through the square shaft 2-3, the centrifugal block bearing cover 2-6 and the centrifugal block cover 2-11 rotate together with the sun gear shaft 2-1. The centrifugal block 2-8 located between the two slides radially outward under the action of centrifugal force, causing the friction plate 2-9 to press against the inner wall of the reel 3, generating a friction damping force. This friction damping force acts in the opposite direction on the reel 3, slowing down its rotation speed, thereby controlling the release speed of the rope 7 and realizing the slow descent of the hose release part. More importantly, the faster the hose detachment descends, the higher the speed of reel 3, the greater the centrifugal force, the greater the positive pressure of friction plates 2-9, and the damping force is simultaneously enhanced, forming a negative feedback adjustment. This enables adaptive adjustment of the descent speed of the hose detachment, ultimately allowing the hose detachment to descend slowly at a near-uniform speed, avoiding free-fall impact damage and achieving a fall-resistant protection effect. This is suitable for complex working conditions of shore-to-ship and ship-to-shore bidirectional refueling, significantly improving the equipment and operational safety of ship refueling operations.

[0024] When it is necessary to retrieve the detached part of the hose from the active safety detachment device 9, the operator turns the handle 5, which drives the reel 3 to rotate in the opposite direction, rewinding the rope 7 back onto the reel 3. Because the rotation speed is extremely low during manual retrieval, the centrifugal blocks 2-8 generate almost no centrifugal force, and the friction plates 2-9 are in a state of detachment or slight contact with the inner wall of the reel 3. Therefore, the retrieval operation has very little resistance, making it easy and effortless.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hose saddle descent system, applied in a ship refueling system, comprising a descent device and a saddle (8), wherein the saddle (8) is fixedly disposed at the refueling end, the saddle (8) supports a refueling hose (10), and an active safety release device (9) is connected to one end of the refueling hose (10) located on the saddle (8), characterized in that, The descent device is located in the internal cavity of the saddle (8). The descent device includes a base (6), a centrifugal shaft assembly (2), and a reel (3). The base (6) is fixedly connected to the saddle (8). A left support (1) and a right support (4) are fixedly connected to both ends of the base (6). The centrifugal shaft assembly (2) is rotatably connected to the left support (1) and the right support (4) at both ends. The reel (3) is coaxial with the centrifugal shaft assembly (2) and rotatably connected to both ends of the centrifugal shaft assembly (2). A planetary gear (1-1) is installed on the left support (1). The planetary gear (1-1) meshes with the reel (3) and the centrifugal shaft assembly (2) respectively. The centrifugal shaft assembly (2) is provided with a radially sliding centrifugal block (2-8). A friction plate (2-9) is fixedly provided on the outer surface of the centrifugal block (2-8). The outer circumference of the reel (3) is provided with a rope groove and wound with rope. The rope (7) is fixed at one end to the reel (3) and the other end leads out to the outside of the decelerator and is fixedly connected to the hose detachment part of the active safety detachment device (9). During normal refueling operations, the rope (7) is in a slack or slightly tensioned state. When the receiving vessel drifts due to an accident, causing the distance between the receiving vessel and the refueling end to exceed the safety threshold set by the ship refueling system and triggering the active safety detachment device (9) to separate its left and right parts, the hose detachment part of the active safety detachment device (9) falls under the action of gravity, which drives the rope (7) to be pulled out quickly and drives the reel (3) to rotate. The power is transmitted to the centrifugal shaft assembly (2) through the planetary gear (1-1) and drives the centrifugal block (2-8) to make centrifugal motion. The friction plate (2-9) rubs against the inner wall of the reel (3) to generate damping force, which slows down the rotation speed of the reel (3) and realizes the slow descent of the hose detachment part.

2. The flexible saddle descent system according to claim 1, characterized in that, The left support (1) and right support (4) are fixedly provided with first bearings (11). The centrifugal shaft assembly (2) includes a sun gear shaft (2-1). The two ends of the sun gear shaft (2-1) are rotatably connected to the left support (1) and right support (4) through the first bearings (11). The sun gear shaft (2-1) is fixedly provided with a centrifugal block bearing cover (2-6) near the left end. The centrifugal block bearing cover (2-6) is fixedly provided with a second bearing (2-5). The right side of the reel (3) is fixedly provided with a third bearing (2-13). The sun gear shaft (2-1) is rotatably connected to the reel (3) through the second bearing (2-5) and the third bearing (2-13).

3. The flexible saddle descent system according to claim 2, characterized in that, The left support (1) is fixedly provided with three planetary gears (1-1) arranged in a triangular pattern. The planetary gears (1-1) can rotate freely and do not mesh with each other. The left end of the sun gear shaft (2-1) is fixedly provided with a sun gear (2-2). The sun gear (2-2) is located between the three planetary gears (1-1) and meshes with the planetary gears (1-1) at the same time. The left end of the reel (3) is fixedly connected with an internal gear ring (3-1). The three planetary gears (1-1) are located inside the internal gear ring (3-1) and mesh with the internal gear ring (3-1) at the same time.

4. The flexible saddle descent system according to claim 2, characterized in that, Three first limit stops (2-6A) are evenly distributed on the right side of the centrifugal block bearing cover (2-6). The sun gear shaft (2-1) is also fixedly provided with a centrifugal block cover (2-11). A second limit stop (2-11B) corresponding to the position of the first limit stop (2-6A) is provided on the left side of the centrifugal block cover (2-11). Three centrifugal blocks (2-8) are placed between the centrifugal block bearing cover (2-6) and the centrifugal block cover (2-11). The centrifugal blocks (2-8) are fan-shaped and located in the radial groove formed by the first limit stop (2-6A) and the second limit stop (2-11B). The friction plate (2-9) is fixedly connected to the outer surface of the centrifugal block (2-8) by screws (2-10).

5. A flexible saddle descent system according to claim 2, characterized in that, The sun gear shaft (2-1) is provided with a square shaft section (2-3), and a shoulder is provided between the square shaft section (2-3) and the sun gear (2-2). The center hole of the centrifugal block bearing cover (2-6) is a combination of a round hole and a first square hole (2-6B). The round hole is fitted onto the shoulder, and the first square hole (2-6B) is fitted onto the square shaft section (2-3). The centrifugal block cover (2-11) has a second square hole (2-11A) at its center. The centrifugal block bearing cover (2-6) is fitted onto the square shaft section (2-3). The left end of the centrifugal block bearing cover (2-6) is close to the end face of the sun gear (2-2). The square shaft section (2-3) is provided with a centrifugal block positioning sleeve (2-7) and a limiting sleeve (2-12). The two ends of the centrifugal block positioning sleeve (2-7) are close to the centrifugal block bearing cover (2-6) and the centrifugal block cover (2-11) respectively. The two ends of the limiting sleeve (2-12) are close to the centrifugal block cover (2-11) and the third bearing (2-13) respectively.

6. The flexible saddle descent system according to claim 2, characterized in that, The sun gear shaft (2-1) is fixedly provided with a square head (2-4) at one end of the right support (4), and the square head (2-4) is fitted with a handle (5).

7. The flexible saddle descent system according to claim 1, characterized in that, A buffer seat (8-1) is fixedly installed at one end of the saddle (8) near the active safety release device (9). The buffer seat (8-1) has a window (8-2) for the rope (7) to pass through. An elastic pad (8-3) is fixedly installed on the upper surface of the buffer seat (8-1).

Images