LNG unloading arm with wind-resistant swing-preventing auxiliary mechanism

Abstract

The utility model relates to the technical field of unloading arms, in particular to an LNG unloading arm with a wind-resistant swing-preventing auxiliary mechanism, which comprises a supporting column, an auxiliary stabilizing component, a limiting component and a rotating column, the auxiliary stabilizing component for stabilizing the supporting column is arranged outside the supporting column, the rotating column capable of rotating is arranged at the top of the supporting column, and the limiting component is arranged on the rotating column. A limiting assembly for preventing the rotating column from swinging is arranged between the auxiliary stabilizing assembly and the rotating column. The limiting assembly comprises a telescopic driving part, the output end of the telescopic driving part is movably connected with a connecting rod, a rotating shaft is fixed to one end of the connecting rod, a clamping rod is fixed to the rotating shaft, and one end of the clamping rod is connected with a fixing block used for fixing the rotating column. The limiting assembly is installed between the supporting column and the rotating column, so that rotation of the rotating column is limited, the discharging arm can be prevented from swinging in strong wind weather, and troubles caused by swinging of the discharging arm to discharging are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of unloading arms, in particular to an LNG unloading arm with a wind-resistant and anti-swing auxiliary mechanism. Background Art

[0002] LNG unloading arm, also known as LNG (liquefied natural gas) loading and unloading arm, is a rigid articulated pipeline system installed on the dock or FLNG device for LNG unloading. It is mainly composed of inner arm, outer arm, bearing, control system, disconnection system, swivel joint, quick connector, hydraulic drive wheel and other components. LNG unloading arm plays an important role as a connecting channel between LNG transport ship and receiving station pipeline, and is the core equipment of the receiving station. Through its telescopic and rotation, it is connected to the interface of the LNG loading ship, and with the help of liquid gas pump, liquefied natural gas is transported from the ship to the land tank area, or LNG stored in the tank area is loaded onto the ship.

[0003] Chinese patent CN115479213A discloses an LNG unloading arm structure, which belongs to the field of LNG unloading technology, and includes a riser, wherein a connecting seat is provided at the upper end of the riser, and a first rotating frame is installed on the connecting seat, and a second rotating frame is connected to the end of the first rotating frame, and the first rotating frame and the second rotating frame are provided with hinged unloading pipes, and a buffer structure is installed on the riser.

[0004] In the above structure, the buffer structure can play a buffering role when the unloading arm is stored, avoiding direct collision between the second rotating frame and the vertical pipe. It is installed in conjunction with the fixed plate, which can not only be positioned during installation, but also ensure stability after installation. The buffer contact piece performs the first buffering at the moment of contact, and is used in conjunction with structures such as springs to improve the buffering effect. The pushing structure can assist in pushing out the unloading arm when it is working, ensuring that the unloading arm can be quickly extended. Through the set pushing frame, the rotating sleeve rolls during the process of pushing the unloading arm, thereby ensuring the pushing effect. Although this structure solves the problem of facilitating the rapid extension of the unloading arm, the unloading arm will rotate and swing under the action of wind in windy weather, thereby causing trouble for natural gas unloading. Utility Model Content

[0005] The utility model aims to provide an LNG unloading arm with a wind-resistant and anti-swing auxiliary mechanism, which limits the rotation of the rotating column by installing a limiting component between the supporting column and the rotating column, thereby preventing the unloading arm from swinging in windy weather and preventing the unloading arm from causing trouble to the unloading.

[0006] To solve the problems of the prior art, the utility model provides an LNG unloading arm with an anti-wind and anti-swing auxiliary mechanism, comprising a support column, an auxiliary stabilization component, a limit component and a rotating column, wherein the outside of the support column is provided with an auxiliary stabilization component for stabilizing the support column, a rotatable rotating column is provided on the top of the support column, and a limit component for preventing the rotating column from swinging is provided between the auxiliary stabilization component and the rotating column; the limit component comprises a telescopic driving component, an output end of the telescopic driving component is movably connected with a connecting rod, one end of the connecting rod is fixed with a rotating shaft, a clamping rod is fixed on the rotating shaft, and one end of the clamping rod is connected with a fixing block for fixing the rotating column.

[0007] Preferably, the limiting assembly also includes a fixed plate, and the fixed plate is fixed to the outside of the support column, one end of the telescopic drive member is movably arranged at the bottom of the fixed plate through an axis, and a bearing seat is also fixed to the outside of the fixed plate, and the rotating shaft is rotatably arranged in the bearing seat.

[0008] Preferably, the auxiliary stabilization assembly includes a support rod and a limiting ring, the limiting ring is formed by two semicircular structures spliced ​​together, one end of the support rod is movably connected to the outside of the limiting ring through an axis, and there are several support rods distributed outside the limiting ring, and the other end of the support rod is connected to a support plate for support through an axis.

[0009] Preferably, the auxiliary stabilization assembly further includes a threaded rod and a clamp ring, wherein the clamp ring is clamped on the outside of the support column and is interconnected with one end of the threaded rod, and the threaded rod passes through the limiting ring and is connected to a knob.

[0010] Preferably, a top frame is fixedly connected to the top of the rotating column, one end of the top frame is connected to a counterweight box, and a plurality of counterweight blocks are placed in the counterweight box.

[0011] Preferably, a second pipe is movably provided at the other end of the top frame, a driven wheel is fixed to the outside of the second pipe, a first pipe is also connected to the top frame, one end of the first pipe is movably connected to the second pipe, the other end of the first pipe passes through the top frame and is connected to the pipe in the top frame, the pipe in the top frame extends to the rotating column and the support column and is connected to a pipe interface.

[0012] Preferably, a rotating driving member is fixed to the outside of the counterweight box via a support member, an output end of the rotating driving member is connected to a driving wheel, and the driving wheel and the driven wheel are connected to each other via a belt.

[0013] Preferably, the second pipeline rotates synchronously with the rotation of the driven wheel.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the LNG unloading arm with wind-resistant and anti-swing auxiliary mechanism has a reasonable structure and has the following advantages:

[0015] By arranging a limit position component between the support column and the rotating column, and fixing the fixed plate on the outside of the support column, when encountering strong winds, by starting the telescopic driving member, the telescopic driving member causes the connecting rod to rotate, and since the connecting rod and the rotating shaft are connected to each other, the rotating shaft is rotated, so that the rotating shaft drives the clamping rod to rotate, and the clamping rod clamps the fixed block to the outside of the rotating column, thereby limiting the rotation of the rotating column. When encountering strong winds, the unloading arm will not swing, which is convenient for subsequent unloading and improves the safety of the unloading arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an LNG unloading arm with a wind-resistant and anti-swing auxiliary mechanism.

[0017] Figure 2 The present invention is a schematic diagram of the front view structure of an LNG unloading arm with a wind-resistant and anti-swing auxiliary mechanism.

[0018] Figure 3 The diagram is a top view of the structure of an LNG unloading arm with a wind-resistant and anti-swing auxiliary mechanism.

[0019] Figure 4 The present invention is a schematic diagram of the upward structural view of a limit assembly of an LNG unloading arm having an auxiliary mechanism for resisting wind and preventing swinging.

[0020] Figure 5 The present invention is a schematic diagram of a top view structure of an LNG unloading arm with a wind-resistant and anti-swing auxiliary mechanism.

[0021] Figure 6 The present invention is a schematic diagram of the three-dimensional structure of an auxiliary stabilizing component of an LNG unloading arm having an auxiliary mechanism for resisting wind and preventing swinging.

[0022] The numbers in the figure are: 1. support column; 2. auxiliary stabilizing assembly; 201. support rod; 2011. limit ring; 2012. support plate; 202. threaded rod; 2021. clamping ring; 3. limit assembly; 301. fixed plate; 3011. bearing seat; 3012. rotating shaft; 302. telescopic drive member; 3021. connecting rod; 303. clamping rod; 3031. fixed block; 4. rotating column; 5. top frame; 6. first pipeline; 7. second pipeline; 8. driven wheel; 9. rotating drive member; 10. driving wheel; 11. counterweight box; 12. counterweight block; 13. pipeline interface. DETAILED DESCRIPTION

[0023] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figure 1 — Figure 6 As shown, the utility model provides: an LNG unloading arm with an auxiliary mechanism for preventing wind and swing, comprising a support column 1, an auxiliary stabilizing component 2, a limiting component 3 and a rotating column 4, the supporting column 1 is provided with an auxiliary stabilizing component 2 for stabilizing the supporting column 1 on the outside, the supporting column 1 bears the weight of the entire unloading arm and provides a stable base for it, a rotating column 4 that can rotate is provided on the top of the supporting column 1, and a limiting component 3 for preventing the rotating column 4 from swinging is provided between the auxiliary stabilizing component 2 and the rotating column 4; the limiting component 3 includes a telescopic driving member 302, and the telescopic driving member 30 2 is movably connected with a connecting rod 3021 at one end of the connecting rod 3021, a rotating shaft 3012 is fixed to one end of the connecting rod 3021, a clamping rod 303 is fixed to the rotating shaft 3012, one end of the clamping rod 303 is connected to a fixing block 3031 for fixing the rotating column 4, the limiting assembly 3 also includes a fixing plate 301, and the fixing plate 301 is fixed to the outside of the support column 1, one end of the telescopic driving member 302 is movably set at the bottom of the fixing plate 301 through an axis, and a bearing seat 3011 is also fixed to the outside of the fixing plate 301, and the rotating shaft 3012 is rotatably set in the bearing seat 3011.

[0025] In this embodiment, the telescopic driving member 302 is started, and the telescopic driving member 302 causes the connecting rod 3021 to rotate. Since the connecting rod 3021 is interconnected with the rotating shaft 3012, the rotating shaft 3012 is rotated, so that the rotating shaft 3012 drives the clamping rod 303 to rotate. The clamping rod 303 clamps the fixed block 3031 to the outside of the rotating column 4, thereby limiting the rotation of the rotating column 4. When encountering strong winds, the unloading arm will not swing, which facilitates subsequent unloading and improves the safety of the unloading arm.

[0026] The auxiliary stabilization component 2 includes a support rod 201 and a limiting ring 2011. The limiting ring 2011 is formed by two semicircular structures spliced ​​together. One end of the support rod 201 is movably connected to the outside of the limiting ring 2011 through an axis, and there are several support rods 201 distributed outside the limiting ring 2011. The other end of the support rod 201 is connected to a support plate 2012 for support through an axis. The auxiliary stabilization component 2 also includes a threaded rod 202 and a clamping ring 2021. The clamping ring 2021 is clamped on the outside of the support column 1 and is interconnected with one end of the threaded rod 202. The threaded rod 202 passes through the limiting ring 2011 and is connected to a knob.

[0027] In this embodiment, by putting the limit ring 2011 on the outside of the support column 1, the threaded rod 202 is rotated to clamp the clamping ring 2021 to the outside of the auxiliary stabilization component 2. At this time, the support rod 201 is opened, so that the support plate 2012 is in contact with the ground, and the unloading arm is supported by the external auxiliary support, thereby making the unloading arm more stable.

[0028] The top of the rotating column 4 is fixedly connected to a top frame 5, one end of the top frame 5 is connected to a counterweight box 11, and a plurality of counterweight blocks 12 are placed in the counterweight box 11. The counterweight blocks 12 are used to balance the weight of the discharge arm, especially when rotating or moving, to ensure the stability and safety of the discharge arm. The other end of the top frame 5 is movably provided with a second pipe 7, and a driven wheel 8 is fixed to the outside of the second pipe 7. The top frame 5 is also connected to a first pipe 6, one end of the first pipe 6 is movably connected to the second pipe 7, and the other end of the first pipe 6 passes through the top frame 5 and is connected to the pipe in the top frame 5. The pipe in the top frame 5 extends to the rotating column 4 and the support column 1 and is connected to a pipe interface 13.

[0029] The counterweight box 11 is externally fixed with a rotating driving member 9 through a supporting member, the output end of the rotating driving member 9 is connected to a driving wheel 10, the driving wheel 10 and the driven wheel 8 are connected to each other through a belt, and the second pipe 7 rotates synchronously with the driven wheel 8. When the second pipe 7 needs to be rotated, the rotating driving member 9 is started and drives the driving wheel 10 to rotate. The driving wheel 10 transmits the rotational force to the driven wheel 8 through the belt, thereby driving the second pipe 7 to rotate.

[0030] Working principle: When in use, after the unloading arm is installed, the driving wheel 10 is rotated by rotating the rotating driving member 9, and the driving wheel 10 rotates the driven wheel 8 through the belt, thereby rotating the second pipeline 7. After the second pipeline 7 is docked with the corresponding interface on the loading ship, the natural gas on the loading ship is transported to the receiving station. In order to prevent the unloading arm from swinging in windy weather, the telescopic driving member 302 is started, and the telescopic driving member 302 will rotate the connecting rod 3021. Since the connecting rod 3021 is connected to the rotating shaft 3012, the rotating shaft 3012 is rotated. Thereby, the rotating shaft 3012 drives the clamping rod 303 to rotate, and the clamping rod 303 clamps the fixed block 3031 to the outside of the rotating column 4, thereby limiting the rotation of the rotating column 4. When encountering strong winds, the unloading arm will not swing. In order to make the unloading arm more stable, the limit ring 2011 is sleeved on the outside of the support column 1, and the rotation of the threaded rod 202 clamps the clamping ring 2021 to the outside of the auxiliary stabilization component 2. At this time, the support rod 201 is opened, so that the support plate 2012 is in contact with the ground, and the unloading arm is supported by the external auxiliary support, thereby making the unloading arm more stable.

[0031] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. An LNG unloading arm with a wind-resistant and anti-swing auxiliary mechanism, characterized in that: The invention comprises a support column (1), an auxiliary stabilizing component (2), a limiting component (3) and a rotating column (4); the supporting column (1) is provided with an auxiliary stabilizing component (2) for stabilizing the supporting column (1) on the outside; the supporting column (1) is provided with a rotatable rotating column (4) on the top; and a limiting component (3) for preventing the rotating column (4) from swinging is provided between the auxiliary stabilizing component (2) and the rotating column (4); The limiting assembly (3) comprises a telescopic driving member (302), the output end of the telescopic driving member (302) is movably connected to a connecting rod (3021), one end of the connecting rod (3021) is fixed with a rotating shaft (3012), a clamping rod (303) is fixed on the rotating shaft (3012), and one end of the clamping rod (303) is connected to a fixing block (3031) for fixing the rotating column (4).

2. The LNG unloading arm with wind-resistant and anti-swing auxiliary mechanism according to claim 1 is characterized in that: The limiting assembly (3) also includes a fixing plate (301), and the fixing plate (301) is fixed to the outside of the support column (1), one end of the telescopic driving member (302) is movably arranged at the bottom of the fixing plate (301) through an axis, and a bearing seat (3011) is also fixed to the outside of the fixing plate (301), and the rotating shaft (3012) is rotatably arranged in the bearing seat (3011).

3. The LNG unloading arm with wind-resistant and anti-swing auxiliary mechanism according to claim 1 is characterized in that: The auxiliary stabilization component (2) comprises a support rod (201) and a limiting ring (2011); the limiting ring (2011) is formed by two semicircular structures spliced ​​together; one end of the support rod (201) is movably connected to the outside of the limiting ring (2011) via an axis, and a plurality of support rods (201) are distributed outside the limiting ring (2011); the other end of the support rod (201) is connected to a support plate (2012) for support via an axis.

4. The LNG unloading arm with wind-resistant and anti-swing auxiliary mechanism according to claim 3 is characterized in that: The auxiliary stabilization assembly (2) also includes a threaded rod (202) and a clamping ring (2021), wherein the clamping ring (2021) is clamped on the outside of the support column (1) and is interconnected with one end of the threaded rod (202), and the threaded rod (202) passes through the limiting ring (2011) and is connected to a knob.

5. The LNG unloading arm with wind-resistant and anti-swing auxiliary mechanism according to claim 1 is characterized in that: The top of the rotating column (4) is fixedly connected to a top frame (5), one end of the top frame (5) is connected to a counterweight box (11), and a plurality of counterweight blocks (12) are placed in the counterweight box (11).

6. The LNG unloading arm with wind-resistant and anti-swing auxiliary mechanism according to claim 5 is characterized in that: A second pipe (7) is movably provided at the other end of the top frame (5), a driven wheel (8) is fixed outside the second pipe (7), and a first pipe (6) is also connected to the top frame (5), one end of the first pipe (6) is movably connected to the second pipe (7), the other end of the first pipe (6) passes through the top frame (5) and is connected to the pipe in the top frame (5), and the pipe in the top frame (5) extends to the rotating column (4) and the supporting column (1) and is connected to a pipe interface (13).

7. The LNG unloading arm with wind-resistant and anti-swing auxiliary mechanism according to claim 5, characterized in that: A rotating driving member (9) is fixed to the outside of the counterweight box (11) via a supporting member, an output end of the rotating driving member (9) is connected to a driving wheel (10), and the driving wheel (10) and the driven wheel (8) are connected to each other via a belt.

8. The LNG unloading arm with wind-resistant and anti-swing auxiliary mechanism according to claim 6 is characterized in that: The second pipe (7) rotates synchronously with the rotation of the driven wheel (8).

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