CN113003453B - Traction winch between crude oil transfer barge and oil tanker and control method thereof - Google Patents
Traction winch between crude oil transfer barge and oil tanker and control method thereof Download PDFInfo
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- CN113003453B CN113003453B CN202110182843.8A CN202110182843A CN113003453B CN 113003453 B CN113003453 B CN 113003453B CN 202110182843 A CN202110182843 A CN 202110182843A CN 113003453 B CN113003453 B CN 113003453B
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- winch
- driving motor
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- cable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/08—Driving gear incorporating fluid motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/16—Tying-up; Shifting, towing, or pushing equipment; Anchoring using winches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
- B66D1/505—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a traction winch between a crude oil barge and an oil tanker and a control method thereof, wherein the traction winch comprises a servo motor, a hydraulic variable pump, a one-way valve, a proportional overflow valve, an energy accumulator, a pressure sensor, a driving motor and a winch roller, wherein the energy accumulator is respectively connected with one end of the one-way valve, one end of the proportional overflow valve and one end of the driving motor, the other end of the one-way valve is connected with the servo motor, the other end of the driving motor is connected with the input end of the winch roller, and the output end of the winch roller, namely a winch cable, is connected with a VLCC ship; the other end of the driving motor is also provided with a pressure sensor; the one-way valve, the pressure sensor, the proportional overflow valve, the servo motor and the hydraulic variable pump are connected with the controller together. Providing a traction winch with a motion compensation function; when the pulling force of the towing cable is overlarge, the winch can unreel; when the pulling force of the towing rope becomes small, the winch can be wound; the variation range of the towing force is reduced, and the amplitude of the steep rise of the pulling force is greatly reduced; the service life of the towing rope is prolonged, and the occurrence of cable breakage accidents is avoided.
Description
Technical Field
The invention relates to the field of ships, in particular to a traction winch between a crude oil transfer barge and an oil tanker and a control method thereof.
Background
Under the background of low price loitering of international crude oil and great reduction of operation cost of global marine oil companies, the CTV (Cargo Transfer Vessel) for reducing the oil unloading cost of FPSO is brought forward. The deepwater dynamic positioning crude oil transfer device with a brand-new concept can cause great challenges to the traditional existing crude oil transfer mode in the market. Aiming at market demands, a new crude oil export operation concept, namely a mode of 'FPSO + CTV + conventional oil tanker', is firstly proposed by combining Nantong middle and far shipping and Guangdong middle and far shipping under middle and far ocean heavy industry flags and researching and developing by a domestic famous research institute: crude oil processed by the FPSO is transpered through a CTV upper side loading system, the CTV is unloaded to a conventional oil tanker through a crude oil export system, and compared with the traditional 'FPSO + shuttle oil tanker', the mode is expected to achieve the effects of large crude oil one-time conveying loading capacity, low cost, small operation risk, energy conservation, environmental protection, strong adaptability and the like. Meanwhile, the CTV also solves the bottleneck that a shuttle tanker must be used in partial marginal oil fields and short distances, improves the operation range and the operation conditions of the conventional tanker of the VLCC grade, and reduces the loading cost of crude oil.
While the use of a towing winch is required between the crude oil barge and the tanker VLCC, the CTV vessel is kept alongside the FPSO by towing the VLCC vessel with the towing winch. Due to the influence of wind, wave and current and the like, the CTV ship and the VLCC can generate swinging motion, and the pulling force on a towing winch towing cable can be changed; the towing cable tension can change within a certain range, and the larger the wind waves are, the larger the tension change range is. When the storm is too great, the CTV may move sharply against the tanker, causing the winch cable tension to rise steeply, which may cause the cable to break, resulting in a safety accident. Traction winches on the market today do not cope well with such situations.
Disclosure of Invention
The invention aims to solve at least one of the defects in the prior art and provides a traction winch between a crude oil transfer barge and a tanker and a control method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
provides a traction winch between a crude oil barge and an oil tanker, which comprises a servo motor, a hydraulic variable pump, a one-way valve, a proportional overflow valve, an energy accumulator, a pressure sensor, a driving motor and a winch roller,
the energy accumulator is respectively connected with one end of the one-way valve, the proportional overflow valve and one end of the driving motor, the other end of the one-way valve is connected with the servo motor, the other end of the driving motor is connected with the input end of the winch drum, and the output end of the winch drum, namely a winch cable, is connected with the VLCC ship;
the other end of the driving motor is also provided with a pressure sensor;
the one-way valve, the pressure sensor, the proportional overflow valve, the servo motor and the hydraulic variable pump are connected with the controller together.
The invention also provides a control method of the traction winch between the crude oil barge and the oil tanker, which comprises the following steps,
when the traction winch is started, the controller controls and increases the rotating speed of the servo motor and the displacement of the hydraulic variable pump to supply oil to the driving motor and the energy accumulator, the pressure at the other end of the driving motor, namely the inlet, is increased, the driving motor rotates forwards to pull the VLCC ship,
continuously acquiring a pressure value at an inlet of a driving motor monitored by a pressure sensor, controlling and reducing the rotating speed of a servo motor and the discharge capacity of a hydraulic variable pump when the monitored pressure value reaches a first threshold value, controlling a one-way valve to be closed to keep the pressure value at the inlet of the driving motor constant, keeping the tension of a winch cable of a winch drum constant at the moment, and keeping the constant output torque of the driving motor;
when the tension of a winch cable pulling the VLCC suddenly rises, namely the tension of the winch cable exceeds the output torque of the driving motor, the driving motor reversely rotates to release the winch cable to avoid the winch cable from being broken, at the moment, oil at the inlet of the driving motor is output to the energy accumulator to be stored,
continuously acquiring a pressure value at the inlet of the driving motor detected by the pressure sensor, and controlling the proportional overflow valve to open for overflow when the monitored pressure value reaches a second threshold value so as to keep the pressure value at the inlet of the driving motor constant;
when the tension of a winch cable pulling the VLCC is suddenly reduced, namely the tension of the winch cable is lower than the output torque of the driving motor, the driving motor rotates forwards to recover the winch cable, and the energy accumulator releases oil so that the pressure value at the inlet of the driving motor is constant.
And further, the control method further comprises the steps of continuously obtaining a pressure value at an inlet of the driving motor, which is detected by the pressure sensor, judging that the traction winch has a leakage hidden danger when the detected pressure value is lower than a third threshold value, controlling the servo motor and the hydraulic variable pump to work, supplying oil to the driving motor and the energy accumulator, and improving the working pressure of the traction winch.
Further, the first threshold and the second threshold are set manually, and are determined through a large number of experiments according to environmental factors of an actual sea area, the VLCC ship and a winch cable, and the maximum traction force of the traction winch is in positive correlation with the second threshold.
Further, the third threshold is set manually, and is determined by a large number of experiments specifically according to the model of the driving motor.
The beneficial effects of the invention are as follows:
the invention provides a traction winch with a motion compensation function; when the pulling force of the towing cable is too large, the winch can be unreeled; when the towing cable pulling force is reduced, the winch can be wound; the variation range of the towing force is reduced, and the amplitude of the steep rise of the pulling force is greatly reduced; the service life of the towing rope is prolonged, and the occurrence of cable breakage accidents is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram showing a structure of a traction winch between a crude oil barge and a tanker.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
With reference to fig. 1, embodiment 1 proposes a traction winch between a crude oil barge and a tanker, which comprises a servo motor 1, a hydraulic variable pump 2, a check valve 3, a proportional overflow valve 4, an accumulator 5, a pressure sensor 6, a driving motor 7 and a winch drum 8,
the energy accumulator 5 is respectively connected with one end of the one-way valve 3, the proportional overflow valve 4 and one end of the driving motor 7, the other end of the one-way valve 3 is connected with the servo motor 1, the other end of the driving motor 7 is connected with the input end of the winch drum 8, and the output end of the winch drum 8, namely a winch cable, is connected with the VLCC ship;
the other end of the driving motor 7 is also provided with a pressure sensor 6;
the check valve 3, the pressure sensor 6, the proportional overflow valve 4, the servo motor 1 and the hydraulic variable pump 2 are connected with a controller together.
In operation,
when the hydraulic variable displacement pump is started, the rotating speed of the servo motor 11 and the displacement of the hydraulic variable displacement pump 22 are increased, oil is supplied to the driving motor 77 and the energy accumulator 55, the pressure of the motor inlet is increased, the motor rotates forwards, and a load is pulled;
when the pressure sensor 6 detects that the pressure at the inlet of the motor reaches a certain value, the rotating speed of the servo motor 1 and the displacement of the variable pump are reduced, so that the pump source is in an unloading state; the one-way valve 3 is closed to play a pressure maintaining role, the pressure at the inlet of the motor is kept unchanged, the winch keeps certain output torque, and the tension on the cable of the winch is constant.
If the tension of the cable suddenly rises and the tension of the cable exceeds the output torque of the motor, the winch is pulled to rotate reversely, and part of the redundant cable is released to avoid the cable from being broken. At the moment, the motor works in a pump state, and oil output from the motor inlet enters the energy accumulator 5 to store energy; the pressure of the motor inlet and the pressure of the energy accumulator 5 can be gradually increased, when the pressure is increased to the set pressure value of the proportional overflow valve 4, the proportional overflow valve 4 is opened to overflow, and the pressure is not increased any more; in the pressure rising process, the pulling force of the winch cable is increased; the maximum pull of the cable depends on the set pressure value of proportional relief valve 4, which can be modified by the controller.
If the cable is loosened, the tension of the cable is reduced; when the pulling force of the mooring rope is smaller than the output torque of the motor, the motor rotates forwards to recover the mooring rope, the pressure at the inlet of the motor is reduced, and the oil stored in the energy accumulator 5 is released.
When the pressure at the inlet of the motor is reduced to a certain lower limit value due to leakage and the like, the servo motor 1 and the variable displacement pump work, and a pump source supplies oil to the inlet of the motor and the energy accumulator 5, so that the working pressure of the system is improved.
The oil source adopts the servo motor 1 and the variable pump, the rotating speed of the servo motor 1 and the discharge capacity of the variable pump can be adjusted simultaneously to adjust the oil supply quantity of the oil source, and the response speed is high.
Example 2, the present invention also provides a method for controlling a winch hauled between a crude oil barge and a tanker, comprising the following steps,
when the traction winch is started, the controller controls to increase the rotating speed of the servo motor 1 and the displacement of the hydraulic variable pump 2 to supply oil to the driving motor 7 and the energy accumulator 5, at the moment, the pressure at the other end of the driving motor 7, namely the inlet, is increased, the driving motor 7 rotates forwards to pull the VLCC ship,
continuously acquiring a pressure value at an inlet of a driving motor 7 monitored by a pressure sensor 6, controlling to reduce the rotating speed of a servo motor 1 and the discharge capacity of a hydraulic variable pump 2 when the monitored pressure value reaches a first threshold value, controlling a one-way valve 3 to close to keep the pressure value at the inlet of the driving motor 7 constant, keeping the tension of a winch cable of a winch drum 8 constant at the moment, and keeping the driving motor 7 at constant output torque;
when the tension of a winch cable pulling the VLCC suddenly rises, namely the tension of the winch cable exceeds the output torque of the driving motor 7, the driving motor 7 reversely rotates to release the winch cable to avoid the winch cable from being broken, at the moment, oil at the inlet of the driving motor 7 is output to the energy accumulator 5 for storage,
continuously acquiring a pressure value at an inlet of a driving motor 7, which is detected by a pressure sensor 6, and controlling a proportional overflow valve 4 to open for overflow when the monitored pressure value reaches a second threshold value so as to enable the pressure value at the inlet of the driving motor 7 to be constant;
when the tension of the winch cable pulling the VLCC is suddenly reduced, namely the tension of the winch cable is lower than the output torque of the driving motor 7, the driving motor 7 rotates forwards, the winch cable is recovered, and the energy accumulator 5 releases oil, so that the pressure value at the inlet of the driving motor 7 is constant.
As a preferred embodiment of the present invention, the control method further includes continuously obtaining a pressure value at an inlet of the driving motor 7 detected by the pressure sensor 6, determining that the traction winch has a potential leakage hazard when the detected pressure value is lower than a third threshold, controlling the servo motor 1 and the hydraulic variable pump 2 to operate, supplying oil to the driving motor 7 and the accumulator 5, and increasing the working pressure of the traction winch.
In the preferred embodiment, a detection mode that the hidden danger of leakage of the traction winch is caused is additionally arranged, so that the working pressure of the traction winch can be further improved.
As a preferred embodiment of the present invention, the first threshold and the second threshold are manually set, and are determined by a large number of experiments according to environmental factors of an actual sea area, the VLCC ship, and the winch cable, wherein the maximum traction force of the traction winch has a positive correlation with the second threshold.
In a preferred embodiment of the present invention, the third threshold is set manually, and is determined by a large number of experiments specifically according to the model of the driving motor 7.
The oil source of the traction winch adopts the servo motor and the variable pump, the rotating speed of the servo motor and the discharge capacity of the variable pump can be adjusted simultaneously to adjust the oil supply amount of the oil source, and the response speed is high.
While the present invention has been described in considerable detail and with particular reference to a few illustrative embodiments thereof, it is not intended to be limited to any such details or embodiments or any particular embodiments, but it is to be construed as effectively covering the intended scope of the invention by providing a broad, potential interpretation of such claims in view of the prior art with reference to the appended claims. Furthermore, the foregoing describes the invention in terms of embodiments foreseen by the inventor for which an enabling description was available, notwithstanding that insubstantial modifications of the invention, not presently foreseen, may nonetheless represent equivalents thereto.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the present invention shall fall within the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means. The invention is capable of other modifications and variations in its technical solution and/or its implementation, within the scope of protection of the invention.
Claims (4)
1. The control method of the traction winch between the crude oil barge and the oil tanker is characterized in that the traction winch between the crude oil barge and the oil tanker comprises a servo motor, a hydraulic variable pump, a one-way valve, a proportional overflow valve, an energy accumulator, a pressure sensor, a driving motor and a winch roller,
the energy accumulator is respectively connected with one end of the one-way valve, the proportional overflow valve and one end of the driving motor, the other end of the one-way valve is connected with one end of the hydraulic variable pump, the other end of the hydraulic variable pump is connected with the servo motor, the other end of the driving motor is connected with the input end of the winch drum, and the output end of the winch drum, namely a winch cable, is connected with the VLCC ship;
the other end of the driving motor is also provided with a pressure sensor;
the one-way valve, the pressure sensor, the proportional overflow valve, the servo motor and the hydraulic variable pump are connected with the controller together;
the control method comprises the following steps of,
when the traction winch is started, the controller controls and increases the rotating speed of the servo motor and the displacement of the hydraulic variable pump to supply oil to the driving motor and the energy accumulator, the pressure at the other end of the driving motor, namely the inlet, is increased, the driving motor rotates forwards to pull the VLCC ship,
continuously acquiring a pressure value at an inlet of a driving motor monitored by a pressure sensor, controlling and reducing the rotating speed of a servo motor and the discharge capacity of a hydraulic variable pump when the monitored pressure value reaches a first threshold value, controlling a one-way valve to be closed to keep the pressure value at the inlet of the driving motor constant, keeping the tension of a winch cable of a winch drum constant at the moment, and keeping the constant output torque of the driving motor;
when the tension of a winch cable pulling the VLCC suddenly rises, namely the tension of the winch cable exceeds the output torque of the driving motor, the driving motor reversely rotates to release the winch cable to avoid the winch cable from being broken, at the moment, oil at the inlet of the driving motor is output to the energy accumulator for storage,
continuously acquiring a pressure value at the inlet of the driving motor detected by the pressure sensor, and controlling the proportional overflow valve to open for overflow when the monitored pressure value reaches a second threshold value so as to enable the pressure value at the inlet of the driving motor to be constant;
when the tension of a winch cable pulling the VLCC is suddenly reduced, namely the tension of the winch cable is lower than the output torque of the driving motor, the driving motor rotates forwards to recover the winch cable, and the energy accumulator releases oil so that the pressure value at the inlet of the driving motor is constant.
2. The method for controlling the winch of the crude oil barge and the tanker according to claim 1, wherein the method further comprises the steps of continuously obtaining a pressure value at an inlet of the driving motor detected by the pressure sensor, judging that the winch has a hidden leakage danger when the detected pressure value is lower than a third threshold value, controlling a servo motor and a hydraulic variable pump to work, supplying oil to the driving motor and an accumulator, and increasing the working pressure of the winch.
3. The method as claimed in claim 1, wherein the first threshold value and the second threshold value are manually set, and the maximum tractive force of the winch is determined by a lot of experiments according to environmental factors of an actual sea area, the VLCC ship and winch cables, and the second threshold value is positively correlated with the maximum tractive force of the winch.
4. The method as claimed in claim 2, wherein the third threshold is manually set and determined by a large number of experiments according to the type of the driving motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110182843.8A CN113003453B (en) | 2021-02-08 | 2021-02-08 | Traction winch between crude oil transfer barge and oil tanker and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110182843.8A CN113003453B (en) | 2021-02-08 | 2021-02-08 | Traction winch between crude oil transfer barge and oil tanker and control method thereof |
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| CN113003453B true CN113003453B (en) | 2022-10-25 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205204701U (en) * | 2015-11-17 | 2016-05-04 | 徐工集团工程机械股份有限公司 | Roll up cable control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100439200C (en) * | 2007-04-10 | 2008-12-03 | 浙江大学 | Underwater drawing body passive heave compensation system based on constant pressure difference |
| CN201201875Y (en) * | 2008-04-16 | 2009-03-04 | 中船华南船舶机械有限公司 | Constant tension device of hydraulic winch |
| CN103482517A (en) * | 2013-10-17 | 2014-01-01 | 上海海洋大学 | Constant tension control device of hydraulic winch |
| CN107161898B (en) * | 2017-07-06 | 2018-11-06 | 杭州流控机器制造有限公司 | A kind of hydraulic control system and its method of tension windlass |
| JP2019014591A (en) * | 2017-07-10 | 2019-01-31 | 株式会社神戸製鋼所 | Work machine |
| EP3647252A1 (en) * | 2018-10-31 | 2020-05-06 | ABB Schweiz AG | Method for operating towing winch and electric drive for towing winch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205204701U (en) * | 2015-11-17 | 2016-05-04 | 徐工集团工程机械股份有限公司 | Roll up cable control system |
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