Explosion-proof drive system for umbilical cable winding and unwinding and umbilical cable winding and unwinding device

Abstract

The present application relates to winch drive system technical field, especially to a kind of umbilical cable winding and unwinding explosion-proof drive system and umbilical cable winding and unwinding equipment.Wherein, umbilical cable winding and unwinding explosion-proof drive system includes the winch drum of winding umbilical cable, pneumatic motor, speed reducer and main control proportional valve, gas source is connected to the air inlet end of main control proportional valve, and after being connected to the air inlet and outlet of pneumatic motor through two working ends of main control proportional valve, drive pneumatic motor forward and reverse rotation by switching the working position of main control proportional valve, speed reducer is installed on the main shaft of pneumatic motor and is transmission connection with winch drum, realize the action of umbilical cable winding and unwinding.The above-mentioned umbilical cable winding and unwinding explosion-proof drive system and including this umbilical cable winding and unwinding explosion-proof drive system umbilical cable winding and unwinding equipment use compressed air as power transmission medium, avoid the hidden trouble of explosion and pollution caused by oil leakage caused by using electricity, liquid, especially suitable for the occasion of high environmental pollution and explosion-proof requirement.

Description

Technical Field

[0001] This invention relates to the field of winch drive system technology, and in particular to an explosion-proof drive system and device for umbilical cable winding and unwinding. Background Technology

[0002] Currently, there are two main types of drive systems used to power winches on ships: electric drive and hydraulic drive. However, in situations with strict requirements for system explosion-proof performance, both electric and hydraulic drive systems require explosion-proof motors and other electrical products as the power source. Even then, a high degree of explosion-proof performance cannot be achieved. Hydraulic drive systems also have the problem of hydraulic oil leakage, which can easily cause environmental pollution. In addition, using a hydraulic drive requires an additional hydraulic power system to be installed on the ship, which is costly and occupies a large space; electric drive systems require even higher explosion-proof requirements for motors, cylinders, and other electrical components, resulting in higher costs as well. Summary of the Invention

[0003] In view of the above problems, one object of the present invention is to provide an explosion-proof drive system for umbilical cable retraction and deployment, so as to ensure the safety of the retraction and deployment equipment in explosion-proof environments and solve the defects of existing electro-hydraulic drive systems.

[0004] Another objective of this invention is to provide an umbilical cable take-up and drop device suitable for explosion-proof applications and to control equipment costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An explosion-proof drive system for umbilical cable winding and unwinding includes a winch drum for winding the umbilical cable, a pneumatic motor, a reducer, and a main control proportional valve. The air source is connected to the air inlet of the main control proportional valve and then to the air inlet and outlet of the pneumatic motor through the two working ends of the main control proportional valve. The pneumatic motor is driven to rotate in both directions by switching the working position of the main control proportional valve. The reducer is mounted on the main shaft of the pneumatic motor and is connected to the winch drum for transmission, thereby realizing the winding and unwinding action of the umbilical cable.

[0007] Specifically, it also includes a brake cylinder, on which a brake block is provided to act on the winch drum. The air source is connected to the rod chamber and rodless chamber of the brake cylinder through a brake control valve. By switching the working position of the brake control valve, the brake on the winch drum is achieved.

[0008] Specifically, it also includes a switching pneumatic valve, a local control pilot valve, and a remote control pilot valve. Pilot gas is selectively connected to the inlet of either the local control pilot valve or the remote control pilot valve via the switching pneumatic valve. The working ends of the local control pilot valve and the remote control pilot valve are connected to the control port of the main control proportional valve through a first shuttle valve, forming the control loop of the main control proportional valve. The local control function or the remote control function is selected by choosing the working position of the switching pneumatic valve, and the working position of the main control proportional valve is selected by switching the working position of the local control pilot valve or the remote control pilot valve.

[0009] Specifically, the pilot gas is supplied by a gas source through a gas supply circuit. This circuit includes a local emergency stop pneumatic valve, a remote emergency stop pneumatic valve, a first on / off valve, and a second on / off valve. The gas source is connected to the inlet of the first on / off valve, the second on / off valve, the remote emergency stop pneumatic valve, and the control port of the first on / off valve. The working ends of the first on / off valve and the remote emergency stop pneumatic valve are both connected to the inlet of the local emergency stop pneumatic valve. The working end of the local emergency stop pneumatic valve is connected to the control port of the second on / off valve. The working end of the second on / off valve is connected to the inlet of the switching pneumatic valve. Initially, a portion of the gas source passes through the first on / off valve, the remote emergency stop pneumatic valve, and the local emergency stop pneumatic valve. The passage of the actuated valve acts on the second on / off valve, switching the pneumatic valve to obtain pilot gas; when the local emergency stop pneumatic valve is pressed, the air source through the local emergency stop pneumatic valve is blocked, the second on / off valve loses its pilot gas source and switches its working position, the pilot gas of the switching pneumatic valve is blocked, and the main control proportional valve blocks the drive air source of the pneumatic motor; when the remote emergency stop pneumatic valve is pressed, the air source through the remote emergency stop pneumatic valve is blocked, and the first on / off valve is controlled to switch its working position, the air source through the first on / off valve is blocked, the second on / off valve loses its pilot gas source and switches its working position, the pilot gas of the switching pneumatic valve is blocked, and the main control proportional valve blocks the drive air source of the pneumatic motor.

[0010] Specifically, an interlock valve is installed between the local emergency stop pneumatic valve and the second on / off valve. The interlock valve is linked with the equipment door to switch the working position, thereby controlling the air supply and realizing the safety interlock function.

[0011] In particular, pressure gauges are installed in both the gas source and the pilot gas delivery pipelines.

[0012] Specifically, the reducer has a built-in brake assembly. The two working ends of the main control proportional valve are connected to the brake port of the reducer through the second shuttle valve. When an air source is supplied, the brake assembly does not work, allowing the reducer to rotate freely; when no air source is supplied, the brake assembly stops the reducer.

[0013] Specifically, torque limiters are installed on the drive shafts of the reducer and the winch drum.

[0014] Specifically, it also includes an air source processor, through which the air source is filtered and stabilized before entering the air intake of the main control proportional valve.

[0015] On the other hand, the present invention adopts the following technical solution:

[0016] An umbilical cable take-up and drop device includes the aforementioned explosion-proof drive system for umbilical cable take-up and drop.

[0017] In summary, the beneficial effects of the present invention are as follows: compared with the prior art, the explosion-proof drive system and umbilical cable deployment / retraction device have the following advantages:

[0018] (1) Compressed air is used as the power transmission medium, which avoids the explosion-proof hazards caused by the use of electricity and hydraulics and the pollution caused by oil leakage. It is especially suitable for occasions with high requirements for environmental pollution and explosion protection.

[0019] (2) The winch drum is braked by a brake cylinder, which improves the reliability of the equipment.

[0020] (3) The pneumatic motor is controlled to rotate in both directions by local and remote control methods, thereby realizing the winding and unwinding of the winch drum;

[0021] (4) The emergency stop function of the winch drum is realized through local emergency stop and remote emergency stop methods;

[0022] (5) The interlock valve improves the safety of equipment use;

[0023] (6) Constant torque control is achieved by the torque limiter between the winch drum and the reducer, which not only protects the drum and umbilical cable from breaking due to overload, but also reduces the impact of the inertial force of the drum starting and stopping on the pneumatic motor, etc. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the explosion-proof drive system for umbilical cable deployment and retraction provided in an embodiment of the present invention.

[0025] In the picture:

[0026] 1-Windlock drum; 2-Pneumatic motor; 3-Reducer; 4-Main control proportional valve; 5-Air source processor; 6-Second shuttle valve; 7-Brake cylinder; 8-Brake control valve; 9-Switching pneumatic valve; 10-Local control pilot valve; 11-Remote control pilot valve; 12-First shuttle valve; 13-Local emergency stop pneumatic valve; 14-Remote emergency stop pneumatic valve; 15-First on / off valve; 16-Second on / off valve; 17-Interlock valve; 18-Torque limiter; 19-Pressure gauge. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, a mechanical connection, an electrical connection, or an indirect connection via an intermediate medium. They can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] In the description of this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The technical solutions of this invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] Please see Figure 1 As shown in the figure, this preferred embodiment provides an explosion-proof drive system for umbilical cable winding and unwinding, including a winch drum 1 for winding the umbilical cable, a pneumatic motor 2, a reducer 3, and a main control proportional valve 4. An air source is connected to the air inlet of the main control proportional valve 4, and then through the two working ends of the main control proportional valve 4 to the air inlet and outlet of the pneumatic motor 2. The rotation of the pneumatic motor 2 is controlled by switching the working position of the main control proportional valve 4. The reducer 3 is mounted on the main shaft of the pneumatic motor 2 and is connected to the winch drum 1 for transmission, thereby realizing the winding and unwinding action of the umbilical cable. In the comparison figure, when the main control proportional valve 4 is in the left or right position, the pneumatic motor 2 rotates forward or reverse; when the main control proportional valve 4 is in the neutral position, the pneumatic motor 2 is not powered.

[0031] The gas source here is compressed gas that has been filtered and stabilized by the gas source processor 5, providing the system with a clean and stable power transmission medium.

[0032] Specifically, the reducer 3 has a built-in brake assembly. The two working ends of the main control proportional valve 4 are connected to the brake port of the reducer 3 through the second shuttle valve 6. When an air source is supplied, the brake assembly does not function, allowing the reducer 3 to rotate freely; when no air source is supplied, the brake assembly stops the reducer 3. The brake assembly here is a common component in the field of reducers and will not be described further.

[0033] To prevent the brake function of the reducer 3 from failing and affecting the braking of the winch drum 1, the drive system also includes a brake cylinder 7. The piston rod of the brake cylinder 7 is equipped with a brake block that acts on the winch drum 1. The air source is connected to the rod chamber and rodless chamber of the brake cylinder 7 through the brake control valve 8. By switching the working position of the brake control valve 8, i.e., manually switching the brake control valve 8 to the left position in the comparison diagram, the air source enters the rodless chamber of the brake cylinder 7 through the left position of the brake control valve 8, and then the piston rod of the cylinder extends, driving the brake block to press against the side of the winch drum 1, thereby achieving braking of the winch drum 1.

[0034] Specifically, the switching action of the main control proportional valve 4 can be controlled locally or remotely. The drive system also includes a switching pneumatic valve 9, a local control pilot valve 10, and a remote control pilot valve 11. The pilot gas is connected to either the inlet of the local control pilot valve 10 or the inlet of the remote control pilot valve 11 via the switching pneumatic valve 9. The working ends of the local control pilot valve 10 and the remote control pilot valve 11 are connected to the control port of the main control proportional valve 4 via the first shuttle valve 12, forming the control loop of the main control proportional valve 4.

[0035] By selecting the working position of the switching pneumatic valve 9, the local control function or the remote control function can be selected. By switching the working position of the local control pilot valve 10 or the remote control pilot valve 11, the working position of the main control proportional valve 4 can be selected. In the comparison diagram, when the function of the switching pneumatic valve 9 is in the lower position, the pilot gas enters the local control pilot valve 10 to realize the local control function, and the remote function is disabled. When the button of the switching pneumatic valve 9 is operated, when the function of the switching pneumatic valve 9 is in the upper position, the pilot gas enters the remote control pilot valve 11 to realize the remote control function, and the local function is disabled.

[0036] Furthermore, the pilot gas is supplied by the gas source through the gas supply circuit. Since the pilot gas is the control power source of the main control proportional valve 4, the emergency stop of the winch drum 1 can be achieved by controlling its on / off state.

[0037] The gas supply circuit is equipped with a local emergency stop pneumatic valve 13, a remote emergency stop pneumatic valve 14, a first on / off valve 15, and a second on / off valve 16. The gas source is connected to the inlet of the first on / off valve 15, the second on / off valve 16, the remote emergency stop pneumatic valve 14, and the control port of the first on / off valve 15. The working end of the first on / off valve 15 and the working end of the remote emergency stop pneumatic valve 14 are connected to the inlet of the local emergency stop pneumatic valve 13. The working end of the local emergency stop pneumatic valve 13 is connected to the control port of the second on / off valve 16. The working end of the second on / off valve 16 is connected to the inlet of the switching pneumatic valve 9.

[0038] In the initial state, a portion of the gas source acts on the second on-off valve 16 through the passage of the first on-off valve 15, the remote emergency stop pneumatic valve 14, and the local emergency stop pneumatic valve 13, so that the switching pneumatic valve 9 obtains pilot gas. In the comparison diagram, the first on-off valve 15 is in the upper function, the remote emergency stop pneumatic valve 14 is in the lower function, the local emergency stop pneumatic valve 13 is in the lower function, and the second on-off valve 16 switches to the upper function.

[0039] When the local emergency stop pneumatic valve 13 is pressed, the air source through the local emergency stop pneumatic valve 13 is blocked, the second on / off valve 16 loses the pilot air source and switches its working position, so that the pilot gas of the switching pneumatic valve 9 is blocked, and then the main control proportional valve 4 blocks the drive air source of the pneumatic motor 2. In the comparison diagram, the local emergency stop pneumatic valve 13 is in the upper function, and the second on / off valve 16 switches to the lower function.

[0040] When the remote emergency stop pneumatic valve 14 is pressed, the air source through the remote emergency stop pneumatic valve 14 is blocked, and the first on / off valve 15 is controlled to switch its working position. With the air source through the first on / off valve 15 blocked, the second on / off valve 16 loses its pilot air source and switches its working position, thus blocking the pilot gas of the switching pneumatic valve 9. Consequently, the main control proportional valve 4 blocks the drive air source of the pneumatic motor 2. In the comparison diagram, the remote emergency stop pneumatic valve 14 is in the upper function, the first on / off valve 15 is in the lower function, and the second on / off valve 16 switches to the lower function.

[0041] An interlock valve 17 is also installed between the local emergency stop pneumatic valve 13 and the second on / off valve 16. The interlock valve 17 is linked with the equipment door to switch working positions, thereby controlling the gas supply. In the comparison diagram, when the equipment door is closed, the interlock valve 17 is in the upper position. At this time, the pilot gas can reach the local control pilot valve 10 or the remote control pilot valve 11 through the interlock valve 17 to achieve normal control and drive the winch drum 1. When the equipment door is open, the interlock valve 17 is in the lower position. At this time, the pilot gas cannot pass through the interlock valve 17, and the winch drum 1 cannot move, thus achieving the safety interlock function. The interlock valve 17 here, as a control element for mutual locking between various actions, can be arranged at each door of the equipment, or at other mechanisms that require interlocking (such as the emergency handle storage area).

[0042] A torque limiter 18 is installed between the reducer 3 and the winch drum 1. When the load torque reaches a certain value during operation or rest, the torque limiter 18 will work to achieve constant torque protection for the winch drum 1. This protects the winch drum 1 and the umbilical cable, preventing the umbilical cable from breaking due to overload, and also reduces the impact of the inertial force of the winch drum 1 on the pneumatic motor 2 and other components during start-up and stop.

[0043] In addition, pressure gauges 19 are installed in both the gas source and the pilot gas delivery pipelines to monitor the system pressure and ensure stable system operation.

[0044] In response, this embodiment also provides an umbilical cable deployment and retrieval device, which adopts the above-mentioned explosion-proof drive system for umbilical cable deployment and retrieval. It utilizes a combination of multiple pneumatic and mechanical components to realize functions such as umbilical cable deployment and retrieval, braking, local and remote switching operation, emergency stop, safety interlock, and constant torque protection control. It avoids the explosion-proof hazards and oil leakage pollution caused by the use of electricity and hydraulic systems, and is particularly suitable for occasions with high environmental pollution and explosion-proof requirements.

[0045] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof drive system for umbilical cable retraction and deployment, characterized in that, The system includes a winch drum for winding the umbilical cable, a pneumatic motor, a reducer, and a main control proportional valve. The air source is connected to the air inlet of the main control proportional valve and then to the air inlet and outlet of the pneumatic motor through the two working ends of the main control proportional valve. The pneumatic motor is driven to rotate in both directions by switching the working position of the main control proportional valve. The reducer is mounted on the main shaft of the pneumatic motor and is connected to the winch drum for transmission, thereby realizing the winding and unwinding of the umbilical cable. It also includes a switching pneumatic valve, a local control pilot valve, and a remote control pilot valve. Pilot gas is selectively connected to the inlet of the local control pilot valve or the inlet of the remote control pilot valve through the switching pneumatic valve. The working end of the local control pilot valve and the working end of the remote control pilot valve are connected to the control port of the main control proportional valve through a first shuttle valve to form the control loop of the main control proportional valve. The pilot gas is supplied by the gas source through a gas supply circuit. The gas supply circuit includes a local emergency stop pneumatic valve, a remote emergency stop pneumatic valve, a first on / off valve, and a second on / off valve. The gas source is connected to the inlet of the first on / off valve, the second on / off valve, the remote emergency stop pneumatic valve, and the control port of the first on / off valve. The working ends of the first on / off valve and the remote emergency stop pneumatic valve are both connected to the inlet of the local emergency stop pneumatic valve. The working end of the local emergency stop pneumatic valve is connected to the control port of the second on / off valve. The working end of the second on / off valve is connected to the inlet of the switching pneumatic valve. In the initial state, a portion of the gas source acts on the second on-off valve through the passage of the first on-off valve, the remote emergency stop pneumatic valve, and the local emergency stop pneumatic valve, and the switching pneumatic valve obtains pilot gas; When the local emergency stop pneumatic valve is pressed, the air source passing through the local emergency stop pneumatic valve is blocked, the second on / off valve loses its pilot air source and switches its working position, the pilot gas of the switching pneumatic valve is blocked, and the main control proportional valve blocks the drive air source of the pneumatic motor. When the remote emergency stop pneumatic valve is pressed, the air source through the remote emergency stop pneumatic valve is blocked, and the first on / off valve is controlled to switch its working position. The air source through the first on / off valve is blocked, the second on / off valve loses its pilot air source and switches its working position, the pilot gas of the switching pneumatic valve is blocked, and the main control proportional valve blocks the drive air source of the pneumatic motor.

2. The explosion-proof drive system for umbilical cable retraction and deployment according to claim 1, characterized in that: It also includes a brake cylinder, on which a brake block is provided to act on the winch drum. An air source is connected to the rod chamber and rodless chamber of the brake cylinder through a brake control valve. By switching the working position of the brake control valve, the winch drum can be braked.

3. The explosion-proof drive system for umbilical cable retraction and deployment according to claim 1, characterized in that: An interlock valve is also provided between the local emergency stop pneumatic valve and the second on / off valve. The interlock valve is linked with the equipment door to switch the working position, thereby controlling the air supply and realizing the safety interlock function.

4. The explosion-proof drive system for umbilical cable retraction and deployment according to claim 1, characterized in that: Pressure gauges are installed in both the gas source and the pipeline for delivering the pilot gas.

5. The explosion-proof drive system for umbilical cable retraction and deployment according to claim 1, characterized in that: The reducer has a built-in brake assembly. The two working ends of the main control proportional valve are connected to the brake port of the reducer through the second shuttle valve. When an air source is supplied, the brake assembly does not work, allowing the reducer to rotate freely; when no air source is supplied, the brake assembly stops the reducer.

6. The explosion-proof drive system for umbilical cable retraction and deployment according to claim 1, characterized in that: A torque limiter is provided on the drive shaft of the reducer and the winch drum.

7. The explosion-proof drive system for umbilical cable retraction and deployment according to claim 1, characterized in that: It also includes an air source processor, through which the air source is filtered and stabilized before entering the air inlet of the main control proportional valve.

8. An umbilical cable take-up and drop device, characterized in that, Including the explosion-proof drive system for umbilical cable retraction as described in any one of claims 1-7.

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