FLNG ship berthing loading and unloading system

Abstract

The invention discloses an FLNG ship berthing loading and unloading system. The FLNG ship berthing loading and unloading system comprises a conveying assembly arranged between an FLNG ship and an LNG transport ship, a separation monitor arranged on the FLNG ship and at least two guarantee steel wire ropes with different lengths, wherein the guarantee steel wire ropes are connected between the separation monitor and the LNG transport ship. One end of each guarantee steel wire rope is separably connected with the separation monitor, and the other end is fixed on the LNG transport ship; the separation monitor is electrically connected with the remote control cabinet; the system monitors the separation states of the steel wire ropes with different lengths through the separation monitor and uploads signals to the remote control cabinet, and the remote control cabinet triggers alarms of corresponding levels and executes corresponding safety measures. Therefore, the technical effects that the alarm level is gradually upgraded and the countermeasures are gradually increased are achieved, and the problems that in the prior art, graded early warning cannot be conducted on the distance overrun of the two ships in the berthing process, and consequently risk identification is not timely and the handling measures are single are solved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of ships, ocean engineering and clean energy, and particularly relates to a FLNG ship berthing loading and unloading system. BACKGROUND

[0002] The FLNG ship is a new type of floating production storage and offloading device based on an upper module for processing, liquefaction, power management and liquefied natural gas storage management system based on a ship body, which is applied to offshore gas field exploitation and has the characteristics of low investment cost, short construction period, small development risk and convenient migration.

[0003] The FLNG ship integrates offshore natural gas exploitation, processing, liquefaction and storage, is usually deployed in an offshore natural gas field far from a land terminal, and therefore the produced LNG is mainly transferred to the land terminal through an LNG transport ship.

[0004] When two ships are in berthing and transfer operation, because both of them float on the sea, the relative position has great floating and instability, and the LNG is a low-temperature, flammable and explosive dangerous product; once the unloading circuit leaks or breaks, great danger will be caused to the operation environment and the two ships. SUMMARY

[0005] The FLNG ship berthing loading and unloading system of the application is used to solve the technical problems in the background art.

[0006] The technical scheme provided by the application is as follows: a FLNG ship berthing loading and unloading system, comprising: a conveying assembly for material conveying between a FLNG ship and an LNG transport ship, a disengagement monitor arranged on the FLNG ship, and at least two safeguard steel wires connected between the disengagement monitor and the LNG transport ship. The safeguard steel wires are different in length, and one end of each of the safeguard steel wires is detachably connected to the disengagement monitor. The disengagement monitor is electrically connected to a remote control cabinet, and the remote control cabinet is electrically connected to an operation panel; the disengagement monitor monitors the disengagement state of the safeguard steel wires and uploads a disengagement signal to the remote control cabinet; the remote control cabinet triggers different levels of alarms according to the disengagement of the safeguard steel wires of different lengths, and executes corresponding measures according to the corresponding alarm levels.

[0007] In one embodiment, the safeguard steel wires are two, which are a first steel wire and a second steel wire; the length of the first steel wire is smaller than that of the second steel wire; the corresponding measures executed according to the corresponding alarm levels include: When the first steel wire of the first length disengages from the disengagement monitor, the disengagement monitor uploads a disengagement signal to the remote control cabinet, the remote control cabinet sends an instruction to the operation panel, and the operation panel sends a pre-alarm; When the second length of the second steel wire rope is disengaged from the disengagement monitor, the disengagement monitor transmits a disengagement signal to the remote control cabinet, the remote control cabinet issues an instruction to control the conveying assembly to stop conveying the material, and the operation panel issues a first-level alarm.

[0008] In an embodiment, the three steel wire ropes are a first steel wire rope, a second steel wire rope, and a third steel wire rope; the first steel wire rope has a length smaller than that of the second steel wire rope, and the second steel wire rope has a length smaller than that of the third steel wire rope; and the corresponding measures according to the corresponding alarm levels include: When the first length of the first steel wire rope is disengaged from the disengagement monitor, the disengagement monitor transmits a disengagement signal to the remote control cabinet, the remote control cabinet issues an instruction to the operation panel, and the operation panel issues a pre-alarm; When the second length of the second steel wire rope is disengaged from the disengagement monitor, the disengagement monitor transmits a disengagement signal to the remote control cabinet, the remote control cabinet issues an instruction to control the conveying assembly to stop conveying the material, and the operation panel issues a first-level alarm; When the third length of the third steel wire rope is disengaged from the disengagement monitor, the disengagement monitor transmits a disengagement signal to the remote control cabinet: If the pre-alarm or the first-level alarm already exists, the remote control cabinet issues an instruction to control the conveying assembly to disconnect, and the operation panel issues a second-level alarm; If there is no pre-alarm or first-level alarm, the remote control cabinet issues an instruction to make the fault indicator on the operation panel always on.

[0009] In an embodiment, the disengagement monitor includes at least two sensing pins and proximity switches corresponding to the sensing pins; the sensing pins are connected to the FLNG ship through shear pins, and the steel wire ropes are connected to one of the sensing pins; the proximity switches are electrically connected to a junction box, and the junction box is connected to the remote control cabinet through a cable.

[0010] In an embodiment, the shapes of the sensing pins are different.

[0011] In an embodiment, the LNG transport ship is provided with a cable winch, a fixed steel wire rope is wound on the cable winch, and a free end of the fixed steel wire rope is connected to the safety steel wire rope through a shackle.

[0012] In an embodiment, the conveying assembly includes a conveying pump arranged in a storage bin of the FLNG ship, a first conveying pipe connected to the conveying pump, and a second conveying pipe connected to an LNG transport ship liquid hose interface; the first conveying pipe and the second conveying pipe are connected through a release joint; a conveying pipe total valve is arranged on one side of the first conveying pipe close to the conveying pump, and an emergency shutdown valve is arranged on one side of the first conveying pipe close to the release joint.

[0013] In one embodiment, the remote control cabinet is electrically connected with a distributed control system and an emergency shutdown system, the emergency shutdown system is electrically connected with a valve control box and a pump starter, the valve control box is electrically connected with a delivery pipe total valve, and the pump starter is electrically connected with a delivery pump.

[0014] In one embodiment, the remote control cabinet is electrically connected with a pneumatic control device, the pneumatic control device is communicated with a release joint and an emergency shutdown valve respectively, and is used for controlling the closing of the emergency shutdown valve and controlling the release between the release joint and the second delivery pipe.

[0015] Compared with the prior art, the present application has the following beneficial effects: (1) The FLNG ship berthing and unloading system of the present application adopts at least two different lengths of safety wire ropes, and through the detachable connection with the disengagement monitor, when the distance between the two ships gradually increases, the different lengths of safety wire ropes can be sequentially pulled off and disconnected, achieving the purpose of grading monitoring and early warning of the relative distance between the two ships, thereby realizing the technical effect of gradually upgrading the alarm level and gradually tightening the response measures, and further solving the problem that the existing technology cannot grade the over-limit of the distance between the two ships during berthing, leading to untimely risk identification and single disposal measures.

[0016] (2) The FLNG ship berthing and unloading system of the present application adopts the mode of setting a cable winch 5 on the LNG transport ship and connecting multiple safety wire ropes with the fixed wire rope 22 through the shackle 4, by adjusting the effective length of the fixed wire rope 22, the trigger reference of the different lengths of safety wire ropes can be flexibly adapted to the required safety distance between the two ships during actual operation, thereby realizing the technical effect that the monitoring alarm level matches the safety demand under different working conditions, and further solving the problem that the existing fixed length safety wire rope cannot be flexibly adjusted, leading to inaccurate early warning or insufficient safety redundancy. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structure schematic diagram of the FLNG ship berthing and unloading system of embodiment 1 of the present application; Figure 2 is a structure schematic diagram of the FLNG ship berthing and unloading system of embodiment 2 of the present application; Figure 3 is a structure schematic diagram of the disengagement monitor in embodiment 2 of the present application; Figure 4 is a flowchart of the FLNG ship berthing and unloading system of the present application.

[0018] The reference signs are as follows: 1, remote control cabinet; 2, operation panel; 3, disengagement monitor; 4, unloading buckle; 5, cable winch; 6, LNG carrier cargo hose interface; 7, second delivery pipe; 8, release joint; 9, emergency shutdown valve; 10, delivery pipe total valve; 11, delivery pump; 12, shear pin; 13, induction bolt; 14, first steel wire rope; 15, second steel wire rope; 16, third steel wire rope; 17, junction box; 18, cable; 19, first proximity switch; 20, second proximity switch; 21, third proximity switch; 22, fixed steel wire rope; 23, pneumatic control device; 24, distributed control system; 25, emergency shutdown system; 26, valve control box; 27, pump starter. DETAILED DESCRIPTION

[0019] The application will be described in detail below with specific examples. The following examples will help those skilled in the art to further understand the application, but do not limit the application in any form. It should be noted that for those skilled in the art, without departing from the concept of the application, a number of changes and improvements can be made. These are within the scope of the application.

[0020] As shown in Figures 1-4 The application is a FLNG ship berthing and unloading system, which comprises: a remote control cabinet 1 arranged in the FLNG ship instrument equipment room (IRR), an operation panel 2 arranged in the central control room (CCR), the remote control cabinet 1 and the operation panel 2 are electrically connected, a delivery assembly for material delivery between the FLNG ship and the LNG carrier, a disengagement monitor 3 arranged at the FLNG ship side, and at least two different lengths of safety steel wire ropes; one end of each safety steel wire rope is connected to the disengagement monitor 3 through separable connection, and the other end is connected to the LNG carrier.

[0021] The disengagement monitor 3 is used to detect whether the safety steel wire rope is disengaged, and to upload the disengagement signal to the system remote control cabinet 1; after the system remote control cabinet 1 receives the disengagement signal, different levels of alarms are triggered according to the action of different steel wire ropes, and corresponding measures are taken, so that when the distance between the two ships exceeds the safe range, safety measures can be taken in time to avoid hose rupture or large-scale leakage of liquid cargo. Specifically: The remote control cabinet 1 adopts a wall-mounted electrical cabinet, which is internally provided with a programmable logic controller (PLC), an input / output module (I / O), and a network switch (HUB) for collecting signals uploaded by the disengagement monitor 3 and interacting with the FLNG ship distributed control system 24 (DCS), the emergency shutdown system 25 (ESD), the pneumatic control device 23 and the operation panel 2.

[0022] The disengagement monitor 3 is arranged on the side of the FLNG ship, and the disengagement monitor 3 comprises: an induction plug 13 connected through a shear pin 12, and a proximity switch corresponding to the induction plug 13, the induction plug 13 being connected with the safety wire; the proximity switch is electrically connected with a junction box 17, and the junction box 17 is connected with a remote control cabinet 1 through a cable 18; the number of the shear pin 12, the induction plug 13 and the proximity switch is consistent with the number of the safety wire; when the distance between the two ships is greater than the length of the safety wire, the tension of the safety wire exceeds the rated breaking force of the corresponding shear pin 12, the shear pin 12 is broken, the corresponding induction plug 13 of the safety wire is pulled out, and then the corresponding proximity switch senses and sends a signal to the remote control cabinet 1 through the junction box 17 and the cable 18. The mechanical breaking is used as a trigger condition, so that the trigger condition is clear, the anti-interference performance is high, the alarm grading is intuitive, the maintenance is simple, and the safety and reliability of the whole FLNG ship berthing and unloading monitoring system are improved.

[0023] In order to further increase the reliability of the monitoring structure, each induction plug 13 is processed into different shapes to match different positions, so that the installation error of the induction plug 13 can be effectively prevented, and the corresponding arrangement of the safety wire with the induction plug 13 and the proximity switch is ensured.

[0024] In the process of transporting the cargo liquid from the storage cabin to the LNG transport ship on the FLNG ship, a conveying assembly is arranged; the conveying assembly of the embodiment comprises: a submerged cargo liquid conveying pump 11, a first conveying pipe, a second conveying pipe 7, a release joint 8, a conveying pipe total valve 10 and an emergency shutdown valve 9; the conveying pump 11 is communicated with the first conveying pipe, the second conveying pipe 7 is communicated with a LNG transport ship cargo liquid hose interface 6, and the first conveying pipe is communicated with the second conveying pipe 7 through the release joint 8; the first conveying pipe is provided with the conveying pipe total valve 10 at one end close to the conveying pump 11, and is provided with the emergency shutdown valve 9 at one end close to the release joint 8; the detachable connection of the first conveying pipe and the second conveying pipe 7 is realized through the release joint 8, and the disconnection in an emergency is ensured.

[0025] The cargo liquid flow path is: the cargo liquid is pumped out by the submerged cargo liquid conveying pump 11, and then is conveyed through the first conveying pipe→the conveying pipe total valve 10→the first conveying pipe→the emergency shutdown valve 9→the release joint 8→the second conveying pipe 7→the LNG transport ship cargo liquid hose interface 6→finally to the LNG transport ship cargo liquid cabin.

[0026] In the embodiment, the remote control cabinet 1 is electrically connected with an emergency shutdown system 25 (ESD) of the FLNG ship in a hard-wired manner, and the emergency shutdown system 25 directly controls a pump starter 27 and a valve control box 26 through hard-wiring, so that the opening and closing of the conveying pump 11 and the conveying pipe total valve 10 can be realized when necessary.

[0027] The pneumatic control device 23 is arranged at a position close to the release joint 8 on the deck in the embodiment, and the pneumatic control device 23 is internally provided with a pressure cylinder which stores a sufficient amount of compressed nitrogen gas for driving the emergency shut-off valve 9 and the release joint 8. When receiving an emergency shut-off signal from the remote control cabinet 1, the pneumatic control device 23 controls the closing of the emergency shut-off valve 9 and the release of the connection between the release joint 8 and the second delivery pipe 7 through a pneumatic pressure tube.

[0028] In the embodiment, the electrically controlled delivery pipe total valve 10 and the pneumatically controlled emergency shut-off valve 9 are arranged at the same time to form double safety control; the delivery pipe total valve 10 can be precisely opened and closed through the remote control cabinet 1 in a normal operation state, which is convenient for realizing automatic management and remote centralized control; the pneumatically controlled emergency shut-off valve 9 has the characteristics of fast action response, being controlled by gas source pressure, and not needing complex electrical signal transmission, and can still reliably perform the shut-off action in the case of power failure, communication failure or sudden accidents, thereby ensuring the safety of the loading and unloading process; through the cooperation of the two types of valves, the electrically precise control in normal state + pneumatically rapid shut-off in abnormal condition can be realized, so that the system has high fault tolerance and safety redundancy, thereby effectively reducing the risk caused by the failure of a single control mode, and ensuring that the loading and unloading process of dangerous media such as liquefied natural gas is safer and more reliable.

[0029] The FLNG ship berthing and unloading system of the embodiment adopts at least two safety steel wires with different lengths, and is connected in a detachable manner with the disengagement monitor 3, so that when the distance between the two ships gradually increases, the safety steel wires with different lengths can be sequentially pulled off and disconnected, thereby achieving the purpose of grading monitoring and early warning of the relative distance between the two ships, and realizing the technical effects of gradually upgrading the alarm level and gradually tightening the response measures, and further solving the problems in the prior art that the distance between the two ships during berthing cannot be graded and early warned, resulting in untimely risk identification and single disposal measures.

[0030] Embodiment 1 In the embodiment, the safety steel wires are two: a first steel wire 14 (shorter) and a second steel wire 15 (longer); the disengagement monitor 3 includes: two sensing plugs 13 connected to the FLNG ship through shear pins 12, a first proximity switch 19 and a second proximity switch 20 arranged correspondingly to the sensing plugs 13; the first steel wire 14 is connected to a sensing plug 13 and corresponds to the first proximity switch 19, and the second steel wire 15 is connected to another sensing plug 13 and corresponds to the second proximity switch 20. The corresponding measures according to the corresponding alarm level include: Pre-alarm: When the distance between the two ships exceeds the length of the first steel wire 14 (shorter), the first steel wire 14 pulls the corresponding sensing pin 13, when the pulling force of the first steel wire 14 exceeds the rated breaking force of the corresponding shear pin 12, the shear pin 12 breaks, the corresponding sensing pin 13 of the first steel wire 14 is pulled out, the first proximity switch 19 senses and transmits the disengagement signal to the remote control cabinet 1, the remote control cabinet 1 sends instructions to the operation panel 2, the buzzer on the system operation panel 2 will sound an alarm with a continuous tone, at the same time, the remote control cabinet 1 sends a MODBUS signal to the distributed control system 24 of the FLNG ship, which attracts the attention of the staff and takes appropriate preventive measures.

[0031] Primary alarm: When the distance between the two ships exceeds the length of the second steel wire 15 (longer), the second steel wire 15 pulls the corresponding sensing pin 13, when the pulling force of the second steel wire 15 exceeds the rated breaking force of the corresponding shear pin 12, the shear pin 12 breaks, the corresponding sensing pin 13 of the second steel wire 15 is pulled out, the second proximity switch 20 senses and transmits the disengagement signal to the remote control cabinet 1, the primary alarm (LSD1) red light on the system operation panel 2 in the central control room will start to flash, at the same time, the buzzer on the system operation panel 2 will sound an alarm with a continuous tone, at the same time, the remote control cabinet 1 sends a Modbus signal to the distributed control system 24 of the FLNG ship, and sends a signal to the FLNG ship emergency shutdown system (ESD) 25 through hardwiring from the system remote control cabinet 1, the FLNG ship emergency shutdown system 25 sends signals to the pump starter (ST) 27 and the valve control cabinet (VCC) 26 of the FLNG ship through hardwiring at the same time, respectively stopping the cargo liquid delivery pump 11 and closing the cargo liquid delivery pipe total valve 10, to stop the FLNG ship from outputting cargo liquid.

[0032] Embodiment 2 In this embodiment, the safety steel wire is three: the first steel wire 14 (shorter), the second steel wire 15 (medium) and the third steel wire 16 (longer); the disengagement monitor 3 includes: three shear pins 12 (connected to the sensing pins 13 on the FLNG ship, the first proximity switch 19, the second proximity switch 20 and the third proximity switch 21 corresponding to the sensing pins 13; the first steel wire 14 is connected with a sensing pin 13 and corresponds to the first proximity switch 19, the second steel wire 15 is connected with another sensing pin 13 and corresponds to the second proximity switch 20, and the third steel wire 16 is connected with another sensing pin 13 and corresponds to the third proximity switch 21. The corresponding measures according to the corresponding alarm level include: Pre-alarm: When the distance between the two ships exceeds the length of the first length (short) of the first steel wire rope 14, the first steel wire rope 14 pulls the corresponding inductive pin 13, when the first steel wire rope 14 pulling force exceeds the rated breaking force of the corresponding shear pin 12, the shear pin 12 breaks, the corresponding inductive pin 13 of the first steel wire rope 14 is pulled out, the first proximity switch 19 senses and transmits the disengagement signal to the remote control cabinet 1, the remote control cabinet 1 sends instructions to the operation panel 2, the buzzer on the system operation panel 2 will sound an alarm with a continuous tone, at the same time, the remote control cabinet 1 sends a MODBUS signal to the distributed control system 24 of the FLNG ship, which attracts the attention of the staff and takes appropriate preventive measures.

[0033] Primary alarm: When the distance between the two ships exceeds the length of the second length (medium) of the second steel wire rope 15, the second steel wire rope 15 pulls the corresponding inductive pin 13, when the second steel wire rope 15 pulling force exceeds the rated breaking force of the corresponding shear pin 12, the shear pin 12 breaks, the corresponding inductive pin 13 of the second steel wire rope 15 is pulled out, the second proximity switch 20 senses and transmits the disengagement signal to the remote control cabinet 1, the primary alarm (LSD1) red light on the system operation panel 2 in the central control room will start to flash, at the same time, the buzzer on the system operation panel 2 will sound an alarm with a continuous tone, at the same time, the remote control cabinet 1 sends a Modbus signal to the distributed control system 24 of the FLNG ship, and the system remote control cabinet 1 sends a signal to the FLNG ship emergency shutdown system (ESD) 25 through hardwiring, the FLNG ship emergency shutdown system 25 sends signals to the pump starter (ST) 27 and the valve control box (VCC) 26 of the FLNG ship through hardwiring, respectively stopping the cargo liquid delivery pump 11 and closing the cargo liquid delivery pipe total valve 10, to stop the FLNG ship from outputting cargo liquid to the outside; Secondary alarm: When the distance between the two ships exceeds the length of the third length (long) of the third steel wire rope 16, the third steel wire rope 16 pulls the corresponding inductive pin 13, when the third steel wire rope 16 pulling force exceeds the rated breaking force of the corresponding shear pin 12, the shear pin 12 breaks, the corresponding inductive pin 13 of the third steel wire rope 16 is pulled out, the third proximity switch 21 senses and transmits the disengagement signal to the remote control cabinet 1; If a pre-alarm or a primary alarm has existed, the secondary alarm (LSD2) red light on the system operation panel 2 of the central control room will start to flash, at the same time, the buzzer on the system operation panel 2 will sound with continuous tone; the speaker and the flashing light near the equipment on the deck will be powered on all the time to give a warning; the remote control cabinet 1 sends a signal to the distributed control system 24 of the FLNG ship through MODBUS, and the signal is sent again from the system remote control cabinet 1 to the FLNG ship emergency shutdown system (ESD) 25 through hardwiring, the FLNG ship emergency shutdown system 25 sends signals again to the FLNG ship cargo liquid delivery pump starter (ST) 27 and the valve control cabinet (VCC) 26 through hardwiring at the same time, respectively for judging and stopping the cargo liquid delivery pump 11 and judging and closing the cargo liquid delivery pipe total valve 10, to stop the FLNG ship from outputting cargo liquid to the outside; the system remote control cabinet 1 sends a closing command of the emergency shutdown valve 9 and a release command of the release joint 8 to the pneumatic control device 23 after 10 seconds of time delay; the pneumatic control device 23 controls the closing of the emergency shutdown valve 9 and the release of the connection between the emergency release joint 8 and the second delivery pipe 7 through the air pressure tube, to reduce the leakage range of the LNG cargo liquid and protect the second delivery pipe 7 between the two ships.

[0034] If there is no pre-alarm or primary alarm, the secondary alarm (LSD2) red light, the buzzer and the speaker and the flashing light near the equipment on the deck on the system operation panel 2 will not act; the proximity switch fault yellow indicator light on the operation panel 2 will always be on, indicating that the equipment is malfunctioning. The equipment fault signal will also be sent from the system remote control cabinet 1 to the distributed control system 24 of the FLNG ship through Modbus signal.

[0035] Embodiment 3 This embodiment is further improved on the basis of Embodiment 1 or 2, and a cable winch 5 is arranged on the LNG transport ship, the fixed wire rope 22 is wound on the cable winch 5, and the free end of the fixed wire rope 22 is connected with the shackles 4, so that the connection ends of the wire rope and the LNG transport ship are connected to the shackles 4.

[0036] In this embodiment, the safe distance between the two ships is determined according to the length of the second delivery pipe 7, the fixed wire rope 22 is arranged to a suitable length, the excess fixed wire rope 22 is wound on the drum of the cable winch 5 and the drum is fixed so that the length of the wire rope does not change; when the distance between the two ships exceeds the sum of the length of the shortest safety wire rope and the fixed wire rope 22, a pre-alarm is triggered; when the distance between the two ships exceeds the sum of the length of the medium-length safety wire rope and the fixed wire rope 22, a primary alarm is triggered; when the distance between the two ships exceeds the sum of the length of the longest safety wire rope and the fixed wire rope 22, a secondary alarm is triggered.

[0037] The fixed steel wire rope 22 is used in combination with the safety steel wire rope, so that the alarm triggering length of the safety steel wire rope can be adjusted by the length of the fixed steel wire rope 22, the adaptability and flexibility of the system are enhanced, and the safety control requirements under different sea conditions and loading and unloading working conditions can be met.

[0038] In the embodiment, the cable winch 5 is arranged on the LNG transport ship, and the plurality of safety steel wire ropes and the fixed steel wire rope 22 are connected uniformly through the shackles 4. By adjusting the effective length of the fixed steel wire rope 22, the triggering reference of the safety steel wire rope with different lengths can be flexibly adapted to the required safety distance between the two ships in actual operation, so that the monitoring alarm level is matched with the safety requirements under different working conditions, and the technical effect is realized. In turn, the problem that the existing fixed length safety steel wire rope cannot be flexibly adjusted, resulting in inaccurate early warning or insufficient safety redundancy, is solved.

[0039] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0040] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An FLNG ship berthing and loading / unloading system, characterized in that, include: The material conveying assembly between the FLNG ship and the LNG carrier, the detachment monitor (3) installed on the FLNG ship, and at least two safety wire ropes connected between the detachment monitor (3) and the LNG carrier; Each of the aforementioned protective steel wire ropes has a different length, and one end of each rope is detachably connected to the detachment monitor (3). The detachment monitor (3) is electrically connected to the remote control cabinet (1), and the remote control cabinet (1) is electrically connected to the operation panel (2); the detachment monitor (3) monitors the detachment status of the safety wire rope and uploads the detachment signal to the remote control cabinet (1); the remote control cabinet (1) triggers different levels of alarms according to the detachment of different lengths of safety wire ropes, and performs corresponding measures according to the corresponding alarm level.

2. The FLNG ship berthing and loading / unloading system as described in claim 1, characterized in that, There are two protective wire ropes, namely a first wire rope (14) and a second wire rope (15); the length of the first wire rope (14) is shorter than that of the second wire rope (15); the corresponding measures to be implemented according to the corresponding alarm level include: When the first wire rope (14) of the first length is detached from the detachment monitor (3), the detachment monitor (3) uploads the detachment signal to the remote control cabinet (1), the remote control cabinet (1) sends an instruction to the operation panel (2), and the operation panel (2) issues a pre-alarm. When the second steel wire rope (15) of the second length detaches from the detachment monitor (3), the detachment monitor (3) uploads the detachment signal to the remote control cabinet (1), the remote control cabinet (1) issues an instruction to control the conveying component to stop material conveying, and at the same time, the operation panel (2) issues a first-level alarm.

3. The FLNG ship berthing and loading / unloading system as described in claim 1, characterized in that, There are three protective steel wire ropes: a first steel wire rope (14), a second steel wire rope (15), and a third steel wire rope (16); the length of the first steel wire rope (14) is less than that of the second steel wire rope (15), and the length of the second steel wire rope (15) is less than that of the third steel wire rope (16); the corresponding measures to be implemented according to the corresponding alarm level include: When the first wire rope (14) of the first length is detached from the detachment monitor (3), the detachment monitor (3) uploads the detachment signal to the remote control cabinet (1), the remote control cabinet (1) sends an instruction to the operation panel (2), and the operation panel (2) issues a pre-alarm. When the second steel wire rope (15) of the second length is detached from the detachment monitor (3), the detachment monitor (3) uploads the detachment signal to the remote control cabinet (1), the remote control cabinet (1) issues an instruction to control the conveying component to stop material conveying, and at the same time, the operation panel (2) issues a first-level alarm. When the third wire rope (16) of the third length detaches from the detachment monitor (3), the detachment monitor (3) uploads a detachment signal to the remote control cabinet (1): If a pre-alarm or a first-level alarm already exists, the remote control cabinet (1) issues a command to control the conveying component to disconnect, and at the same time, the operation panel (2) issues a second-level alarm. If there is no pre-alarm or Level 1 alarm, the remote control cabinet (1) issues a command and the fault indicator light on the operation panel (2) remains on.

4. An FLNG ship berthing and loading / unloading system as described in claim 2 or 3, characterized in that, The detachment monitor (3) includes: at least two sensing pins (13), and a proximity switch corresponding to the sensing pins (13); the sensing pins (13) are connected to the FLNG ship via shear pins (12), and the safety wire rope is connected to one of the sensing pins (13); the proximity switch is electrically connected to a junction box (17), and the junction box (17) is connected to the remote control cabinet (1) via a cable (18).

5. The FLNG ship berthing and loading / unloading system as described in claim 4, characterized in that, The shapes of the sensing pins (13) are different.

6. The FLNG ship berthing and loading / unloading system as described in claim 1, characterized in that, The LNG carrier is equipped with a cable winch (5), on which a fixed steel wire rope (22) is wound. The free end of the fixed steel wire rope (22) is connected to the safety steel wire rope through a shackle (4).

7. The FLNG ship berthing and loading / unloading system as described in claim 1, characterized in that, The delivery assembly includes: a delivery pump (11) installed in the storage tank of the FLNG ship, a first delivery pipe connected to the delivery pump (11), and a second delivery pipe (7) connected to the cargo hose interface (6) of the LNG carrier; the first delivery pipe and the second delivery pipe (7) are connected by a release connector (8); a main delivery valve (10) is provided on the side of the first delivery pipe near the delivery pump (11), and an emergency shut-off valve (9) is provided on the side of the first delivery pipe near the release connector (8).

8. The FLNG ship berthing and loading / unloading system as described in claim 7, characterized in that, The remote control cabinet (1) is electrically connected to a distributed control system (24) and an emergency shutdown system (25). The emergency shutdown system (25) is electrically connected to a valve control box (26) and a pump starter (27). The valve control box (26) is electrically connected to the main valve (10) of the delivery pipe, and the pump starter (27) is electrically connected to the delivery pump (11).

9. The FLNG ship berthing and loading / unloading system as described in claim 7, characterized in that, The remote control cabinet (1) is electrically connected to a pneumatic control device (23), which is connected to the release connector (8) and the emergency shut-off valve (9) respectively, and is used to control the closing of the emergency shut-off valve (9) and control the release between the release connector (8) and the second delivery pipe (7).

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