A method of using an external pump station on an anchor chain

Abstract

The present application relates to the technical field of ship anchor chain operation, and more particularly to a method for using external pump station to wind anchor chain, comprising the following steps: S1: building a winding anchor chain operation system, the operation system comprising an external pump station, an anchor windlass, an anchor chain tensioning device, a hydraulic control pipeline, an adaptive connection joint and a monitoring module; S2: connecting the external pump station to the hydraulic control pipeline and the adaptive connection joint; S3: adjusting to an operation pressure matching the load requirement of the anchor chain to be wound; S4: starting the external pump station to output hydraulic oil of a preset pressure to the hydraulic drive end of the anchor windlass through the hydraulic control pipeline; S5: during the winding of the anchor chain; S6: completing the winding operation of the anchor chain; the present application uses an external pump station to replace a traditional built-in pump station, the external pump station is configured with a frequency conversion speed regulation module and a pressure feedback regulation module, the output pressure regulation range is 0.5-30 MPa, and the power output parameters can be flexibly adjusted according to different requirements of the diameter, weight, material and operation environment of the anchor chain to be wound.

Description

Technical Field

[0001] This invention relates to the field of ship anchor chain operation technology, and more particularly to a method for using an external pump station to install anchor chains. Background Technology

[0002] Currently, anchor chain installation on ships and marine engineering equipment largely relies on the equipment's built-in pump stations to power anchor winches and tensioning devices, which has several limitations: the power output of the built-in pump station is fixed, making it difficult to adapt to the anchor chain installation requirements of different specifications and loads; when the built-in pump station malfunctions or is under maintenance, anchor chain installation must be suspended, affecting the construction progress; the installation space of the built-in pump station is limited, maintenance is inconvenient, and its adaptability is poor, making it unable to flexibly connect with different types of anchor winch equipment.

[0003] When using the above-mentioned technology, the following technical problems were found in the existing technology: In traditional anchor chain installation, the synchronous coordination and control accuracy of power supply, anchor chain tensioning, and guide rollers is low, which easily leads to problems such as anchor chain jamming and uneven force distribution, posing safety hazards. In order to solve the above-mentioned technical problems, this invention proposes a method for installing anchor chains using an external pump station. Through the flexible adaptation, precise pressure control, and coordinated regulation of the external pump station, efficient, safe, and highly adaptable anchor chain installation is achieved, which has significant inventiveness. Summary of the Invention

[0004] The purpose of this invention is to provide a method for using anchor chains on external pumping stations to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: In a first aspect, the present invention provides a method for using an anchor chain on an external pumping station, comprising the following steps: S1: Set up the anchor chain operation system, which includes an external pump station, anchor winch, anchor chain tensioning device, hydraulic control pipeline, adapter connector and monitoring module; S2: Establish a detachable sealed hydraulic connection between the external pump station and the hydraulic drive end of the anchor winch and the anchor chain tensioning device through hydraulic control pipelines and adapter connectors; S3: The monitoring module is used to test the sealing of the external pump station, hydraulic control pipeline and various connection parts and to adjust the pressure until the working pressure matches the load requirements of the anchor chain to be installed; S4: Start the external pump station and output hydraulic oil at a preset pressure to the hydraulic drive end of the anchor winch through the hydraulic control pipeline to drive the anchor winch to run and drive the anchor chain to move up. At the same time, control the anchor chain tensioning device to adjust the tension of the anchor chain in real time. S5: During the process of anchoring the chain, the monitoring module collects the force value of the anchor chain, the output pressure value of the external pump station, and the temperature value of the hydraulic oil in real time, and dynamically adjusts the output pressure of the external pump station and the operating speed of the anchor winch according to the collected values; S6: After the anchor chain is hoisted to the preset position, turn off the external pump station, release the residual pressure in the hydraulic control pipeline, and disassemble the connections between the external pump station, the anchor winch, and the anchor chain tensioning device to complete the operation of anchoring the chain.

[0006] As a preferred implementation manner, in step S1, the external pump station is equipped with a variable frequency speed regulation module and a pressure feedback regulation module. The variable frequency speed regulation module is used to adjust the rotation speed of the pump station motor, and the pressure feedback regulation module is used to receive the pressure signal of the monitoring module and automatically adjust the output pressure.

[0007] As a preferred implementation manner, in step S2, the adaptor connection joint includes a male joint and a female joint. An elastic sealing ring and an anti-misinsertion protrusion are provided on the male joint, and a sealing groove and an anti-misinsertion card slot are correspondingly provided on the female joint. After connection, secondary fixation is carried out through a locking nut.

[0008] As a preferred implementation manner, in step S3, the airtightness detection adopts the pressure holding method, specifically: inject hydraulic oil with a preset pressure into the hydraulic control pipeline, hold the pressure for 3 - 5 minutes. If the pressure drop does not exceed the preset threshold, it is determined that the airtightness is qualified. As a preferred implementation manner, the preset pressure is 1.2 - 1.5 times the operating pressure.

[0009] As a preferred implementation manner, in step S4, the adjustment method of the anchor chain tensioning device is automatic adjustment. When the monitoring module detects that the force value of the anchor chain is lower than the preset lower limit value, the tensioning device automatically increases the tensioning force; when the force value of the anchor chain is higher than the preset upper limit value, the tensioning device automatically reduces the tensioning force to ensure that the force on the anchor chain is always within the preset range.

[0010] As a preferred implementation manner, in step S5, the monitoring module includes a tension sensor, a pressure sensor, and a temperature sensor. The tension sensor is installed at the contact part between the anchor chain tensioning device and the anchor chain, the pressure sensor is installed at the output end of the external pump station, and the temperature sensor is installed in the middle of the hydraulic control pipeline. The detection data of each sensor is transmitted to the control terminal in real time.

[0011] As a preferred implementation manner, in step S5, the specific logic of dynamic adjustment is that when the temperature value of the hydraulic oil exceeds the preset temperature threshold, the external pump station automatically reduces the output pressure and improves the heat dissipation efficiency; when the force value of the anchor chain suddenly increases and exceeds the emergency threshold, the external pump station immediately stops outputting, and the anchor winch brakes emergently.

[0012] In a preferred embodiment, in step S1, the operating system further includes an emergency pressure relief device, which is connected in parallel with the hydraulic control pipeline. When an abnormal pressure or equipment failure occurs during operation, the pressure in the pipeline can be quickly released through the emergency pressure relief device.

[0013] In a preferred embodiment, in step S4, the output pressure of the external pump station is adjustable from 0.5 to 30 MPa, which can be adapted to the diameter, weight and working environment of the anchor chain to be installed.

[0014] In a preferred embodiment, step S5 also includes an anchor chain guide roller step, in which the anchor chain is guided in real time by the guide roller set at the anchor winch entrance to prevent the anchor chain from shifting or getting stuck during the chain loading process.

[0015] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the present invention replaces the traditional built-in pump station with an external pump station. The external pump station is equipped with a variable frequency speed control module and a pressure feedback adjustment module, and the output pressure adjustment range is 0.5-30MPa. The power output parameters can be flexibly adjusted according to different requirements such as the diameter, weight, material and working environment of the anchor chain to be installed. When the built-in pump station of the equipment malfunctions or requires maintenance, the present invention can quickly set up an external pump station operation system. The anchor chain operation can be started without waiting for the built-in pump station to be repaired, avoiding work stoppage and significantly shortening the construction cycle. At the same time, the external pump station is easy to install and dismantle, and the maintenance space is not limited by the equipment structure, making subsequent maintenance more efficient. By monitoring the key parameters such as anchor chain stress, pump station output pressure, and hydraulic oil temperature in real time, and combining them with the automatic adjustment of the anchor chain tensioning device and the cooperation of the guide rollers, the power supply, anchor chain tensioning, and guide rollers work together to effectively prevent problems such as deviation, jamming, and uneven stress during the anchor chain loading process. At the same time, an emergency pressure relief device and emergency braking logic are configured to respond quickly in case of emergencies such as abnormal pressure, excessive temperature, or sudden changes in anchor chain stress, so as to avoid safety accidents and significantly improve operational safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the operation system built by the present invention S1; Figure 3 This is a schematic diagram of the connection of the S2 device of the present invention; Figure 4 This is a schematic diagram of the S3 test and debugging of the present invention; Figure 5 This is a schematic diagram of the anchor chain operation on S4 of the present invention; Figure 6 This is a schematic diagram of the dynamic monitoring and control of S5 in this invention; Figure 7 This is a schematic diagram illustrating the handling of abnormal parameters in this invention; Figure 8 This is a schematic diagram illustrating the emergency response triggering method of the present invention; Figure 9 This is a schematic diagram of the completion of operation S6 in this invention; Figure 10 This is a schematic diagram illustrating the activation of the security control system of this invention. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Example 1 Please refer to the attached document. Figure 1-10 This embodiment provides a method for installing anchor chains using an external pump station, applied to anchor chain installation operations on offshore platforms. The anchor chain to be installed has a diameter of 89mm and a weight of 150kg / m. The operating environment is nearshore waters with wind force ≤5. The specific steps are as follows: S1: Set up the anchor chain operation system; the operation system includes an external pump station, anchor winch, anchor chain tensioning device, hydraulic control pipeline, adapter connector, monitoring module and emergency pressure relief device.

[0021] The external pumping station uses a YCB-40 variable vane pump, equipped with a variable frequency speed control module (model: VFD037B43A) and a pressure feedback regulation module (model: PT124G-111). The variable frequency speed control module can realize stepless adjustment of motor speed from 0 to 1500 r / min, and the pressure feedback regulation module can receive pressure signals and automatically adjust the output pressure. The anchor winch is a JM-10 hydraulic anchor winch with a rated tensile force of 100kN; the anchor chain tensioning device is a pneumatic tensioner with an adjustment range of 0-50kN; the hydraulic control pipeline is a high-pressure rubber hose with a rated working pressure of 40MPa and an inner diameter of 25mm; the matching connector is a male-female structure, with an O-ring elastic sealing ring (material: nitrile rubber) and two anti-misinsertion protrusions on the male connector, and a corresponding sealing groove and anti-misinsertion slot on the female connector; the locking nut is an M42 stainless steel nut. The monitoring module includes a tension sensor (model: HLJ-100, range 0-200kN, accuracy ±0.5%FS), a pressure sensor (model: PX409-030G10V, range 0-40MPa, accuracy ±0.25%FS), and a temperature sensor (model: PT100, measurement range -50℃-200℃, accuracy ±0.1℃); the emergency pressure relief device uses a Y2-Ha20L electromagnetic relief valve, which is connected in parallel with the hydraulic control pipeline.

[0022] S2: Connect all equipment; establish a detachable sealed hydraulic connection between the output end of the external pump station and the hydraulic drive end of the anchor winch and the hydraulic interface of the anchor chain tensioning device through the hydraulic control pipeline and the adapter connector; When connecting, first align the anti-misinsertion protrusion of the male connector with the anti-misinsertion groove of the female connector, insert it, and confirm that the elastic sealing ring is fully embedded in the sealing groove. Then tighten the lock nut clockwise (tightening torque is 80 N·m) to complete the secondary fixation and ensure that the connection is reliable and leak-free.

[0023] S3: Sealing Test and Pressure Adjustment; The pressure of the hydraulic control pipeline is collected by the pressure sensor of the monitoring module, and a pressure holding method is used for sealing test: 25MPa hydraulic oil (the preset working pressure is 20MPa, and the preset pressure is 1.25 times the working pressure) is introduced into the hydraulic control pipeline and held for 4 minutes. During this period, the pressure sensor monitors the pressure change in real time. The pressure eventually drops to 0.3MPa, which does not exceed the preset threshold (0.5MPa), and the sealing is deemed qualified. Subsequently, the output pressure is adjusted to 20MPa through the pressure feedback adjustment module of the external pump station to match the load requirements of the anchor chain to be installed. At the same time, the preset force range of the anchor chain tensioning device is adjusted to 30-50kN.

[0024] S4: Start the anchor chain loading operation; start the external pump station, output 20MPa hydraulic oil to the hydraulic drive end of the anchor winch through the hydraulic control pipeline, drive the anchor winch to run at a speed of 5m / min, and drive the anchor chain to load; at the same time, the anchor chain tensioning device enters the automatic adjustment mode, responding to the tension signal of the monitoring module in real time: when the tension sensor detects that the anchor chain force is 28kN (lower than the preset lower limit of 30kN), the tensioning device automatically increases the tension until the force value stabilizes at 32kN; when the detected force value is 52kN (higher than the preset upper limit of 50kN), the tensioning device automatically decreases the tension to ensure that the anchor chain force is always within the preset range of 30-50kN; Meanwhile, guide rollers installed at the anchor winch inlet guide the anchor chain to prevent it from shifting or getting stuck during the chain loading process.

[0025] S5: Dynamic monitoring and control; During the anchor chain loading process, the sensors of the monitoring module collect data in real time and transmit it to the control terminal (PLC control cabinet): the tension sensor collects the anchor chain force value every 0.5 seconds, the pressure sensor collects the external pump station output pressure value every 1 second, and the temperature sensor collects the hydraulic oil temperature value every 2 seconds.

[0026] The dynamic adjustment logic is as follows: When the hydraulic oil temperature rises to 65℃ (the preset temperature threshold is 60℃), the variable frequency speed control module of the external pump station automatically reduces the motor speed to 1200r / min, and at the same time starts the pump station's own forced cooling fan (speed increased to 2000r / min) to improve heat dissipation efficiency until the temperature drops to 58℃. When the anchor chain stress suddenly increases to 120kN (the emergency threshold is 100kN), the pressure feedback adjustment module immediately sends a stop signal, the external pump station stops outputting hydraulic oil, and the anchor winch achieves emergency braking through the hydraulic brake to prevent the anchor chain from breaking.

[0027] S6: Finishing the work; After the anchor chain is loaded to the preset position (confirmed by the limit switch on the anchor winch), turn off the motor of the external pump station, slowly release the residual pressure in the hydraulic control line through the emergency pressure relief device (pressure drops to 0MPa), then loosen the locking nut of the adapter connector, disassemble the connection between the external pump station and the anchor winch and anchor chain tensioning device, tidy up the hydraulic control line and all equipment, and complete this anchor chain loading operation.

[0028] This embodiment completes the anchor chain installation operation of the offshore platform using the above method. There are no anchor chain jams, deviations, or leaks during the operation. The anchor chain is subjected to uniform force, and the operation efficiency is 30% higher than the traditional built-in pump station mode. Moreover, no safety hazards occurred throughout the process, which fully verifies the high efficiency, safety, and stability of the method of the present invention.

[0029] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A method for using anchor chains on an external pumping station, characterized in that, Includes the following steps: S1: Set up the anchor chain operation system, which includes an external pump station, anchor winch, anchor chain tensioning device, hydraulic control pipeline, adapter connector and monitoring module; S2: Establish a detachable sealed hydraulic connection between the external pump station and the hydraulic drive end of the anchor winch and the anchor chain tensioning device through hydraulic control pipelines and adapter connectors; S3: The monitoring module is used to test the sealing of the external pump station, hydraulic control pipeline and various connection parts and to adjust the pressure until the working pressure matches the load requirements of the anchor chain to be installed; S4: Start the external pump station and output hydraulic oil at a preset pressure to the hydraulic drive end of the anchor winch through the hydraulic control pipeline to drive the anchor winch to run and drive the anchor chain to move up. At the same time, control the anchor chain tensioning device to adjust the tension of the anchor chain in real time. S5: During the anchor chain installation process, the monitoring module collects the anchor chain force value, external pump station output pressure value and hydraulic oil temperature value in real time, and dynamically adjusts the output pressure of the external pump station and the operating speed of the anchor winch based on the collected values. S6: After the anchor chain is loaded to the preset position, turn off the external pump station, release the residual pressure in the hydraulic control line, disconnect the external pump station from the anchor winch and anchor chain tensioning device, and complete the anchor chain loading operation.

2. The method for using an anchor chain on an external pumping station according to claim 1, characterized in that, In step S1, the external pump station is equipped with a variable frequency speed control module and a pressure feedback adjustment module. The variable frequency speed control module is used to adjust the speed of the pump station motor, and the pressure feedback adjustment module is used to receive the pressure signal from the monitoring module and automatically adjust the output pressure.

3. The method for using an anchor chain on an external pumping station according to claim 1, characterized in that, In step S2, the adapter connector includes a male connector and a female connector. The male connector is provided with an elastic sealing ring and an anti-misinsertion protrusion, and the female connector is provided with a corresponding sealing groove and an anti-misinsertion slot. After connection, it is fixed for a second time by tightening the lock nut.

4. A method for using an external pumping station anchor chain according to claim 1, characterized in that, In step S3, the sealing test adopts the pressure holding method, which is as follows: hydraulic oil at a preset pressure is introduced into the directional hydraulic control pipeline and the pressure is held for 3-5 minutes. If the pressure drop does not exceed the preset threshold, the sealing is deemed qualified. The preset pressure is 1.2-1.5 times the working pressure.

5. A method for using an external pumping station anchor chain according to claim 1, characterized in that, In step S4, the anchor chain tensioning device is adjusted automatically. When the monitoring module detects that the anchor chain force is lower than the preset lower limit, the tensioning device automatically increases the tension; when the anchor chain force is higher than the preset upper limit, the tensioning device automatically decreases the tension, ensuring that the anchor chain force is always within the preset range.

6. A method for using an external pumping station anchor chain according to claim 1, characterized in that, In step S5, the monitoring module includes a tension sensor, a pressure sensor, and a temperature sensor. The tension sensor is installed at the contact point between the anchor chain tensioning device and the anchor chain, the pressure sensor is installed at the output end of the external pump station, and the temperature sensor is installed in the middle of the hydraulic control pipeline. The detection data of each sensor is transmitted to the control terminal in real time.

7. A method for using an anchor chain on an external pumping station according to claim 1, characterized in that, The specific logic of dynamic adjustment in step S5 is as follows: when the hydraulic oil temperature exceeds the preset temperature threshold, the external pump station automatically reduces the output pressure and improves the heat dissipation efficiency; when the anchor chain force suddenly increases and exceeds the emergency threshold, the external pump station immediately stops outputting and the anchor winch is braked in an emergency.

8. A method for using an external pumping station anchor chain according to claim 2, characterized in that, In step S1, the operating system also includes an emergency pressure relief device, which is connected in parallel with the hydraulic control pipeline. When an abnormal pressure or equipment failure occurs during operation, the pressure in the pipeline can be quickly released through the emergency pressure relief device.

9. A method for using an external pumping station anchor chain according to claim 5, characterized in that, In step S4, the output pressure of the external pump station can be adjusted from 0.5 to 30 MPa, and can be adapted to the diameter, weight and working environment of the anchor chain to be installed.

10. A method for using an anchor chain on an external pumping station according to claim 6, characterized in that, Step S5 also includes the anchor chain guide roller step, in which the anchor chain is guided in real time by the guide roller set at the anchor winch entrance to prevent the anchor chain from shifting or getting stuck during the chain loading process.

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