WO2022057224A1

WO2022057224A1 - Monitoring system and monitoring method for wind-assisted rotor

Info

Publication number: WO2022057224A1
Application number: PCT/CN2021/081530
Authority: WO
Inventors: 陈少峰; 郭峰山; 黄国富; 吴幼华
Original assignee: 中船重工（上海）节能技术发展有限公司
Priority date: 2020-09-21
Filing date: 2021-03-18
Publication date: 2022-03-24
Also published as: CN112033476A

Abstract

A monitoring system and monitoring method for a wind-assisted rotor, the monitoring system for a wind-assisted rotor comprising: a controller (14), acceleration sensors (11), a strain gauge (151), a laser rangefinder (12) and an alarm module (13). Multiple sets of acceleration sensors (11) are used to detect the vibration speed and vibration acceleration of a base (22). The controller (14) is used to drive the alarm module (13) to issue a first-level alarm when the vibration speed exceeds a first speed threshold, and/or the vibration acceleration exceeds a first acceleration threshold. The strain gauge (151) is used to detect deformation data of an outer cylinder (21). The controller (14) is used to drive the alarm module (13) to issue the first-level alarm when the deformation data exceeds a first deformation threshold. The laser rangefinder (12) is used to detect the eccentricity of the outer cylinder (21). The controller (14) is used to to drive the alarm module (13) to issue the first-level alarm when the eccentricity exceeds a first eccentric threshold. The system monitors the operation state of a wind-assisted rotor to ensure the safe operation of the wind-assisted rotor.

Description

A monitoring system and monitoring method for wind-assisted rotor

This application claims the priority of Chinese patent application 202010997162.2 with a filing date of September 21, 2020. This application cites the full text of the above Chinese patent application.

technical field

The present disclosure relates to the field of display technology, and in particular, to a monitoring system and a monitoring method for a wind-assisted rotor.

Background technique

As a new type of marine energy-saving and consumption-reducing device, the wind-assisted rotor has the characteristics of good energy-saving effect, strong boost force, and can be used in conjunction with other energy-saving devices. The development and application of push rotors.

However, the wind-assisted rotor has unavoidable characteristics such as large size, high height, fast rotation speed, and unstable working environment. In order to ensure the safe operation of the wind-assisted rotor, it must be Strengthen quality supervision. The quality supervision in the processing and installation stage mainly focuses on the processing of the outer cylinder, segmented splicing and other processes. It is a short-term and static process and is relatively easy to implement.

The quality supervision in the operation stage not only needs to evaluate and analyze the effect of energy saving and consumption reduction in the whole cycle, but also has many operating state parameters of the wind booster rotor. Inadvertently, the operating state of the wind-assisted rotor may exceed the equipment limit and cause harm to the ship.

SUMMARY OF THE INVENTION

The embodiments of the present disclosure provide a monitoring system and a monitoring method for a wind-assisted rotor, so as to monitor the operation state of the wind-assisted rotor and ensure the safe operation of the wind-assisted rotor.

In a first aspect, an embodiment of the present disclosure provides a monitoring system for a wind-assisted rotor, including: a controller; multiple sets of acceleration sensors, multiple strain gauges, and at least two laser rangefinders electrically connected to the controller and alarm module;

The multiple groups of acceleration sensors are respectively arranged on the base of the wind-assisted rotor for detecting the vibration speed and vibration acceleration of the base; the controller is used to detect when the vibration speed exceeds the first speed threshold, And/or, when the vibration acceleration exceeds the first acceleration threshold, the alarm module is driven to issue a first-level alarm;

The strain gauge is arranged on the inner wall of the outer cylinder of the wind-assisted rotor, and is used to detect the deformation data of the outer cylinder; the controller is used to drive the alarm module when the deformation data exceeds a first deformation threshold issue a first-level alert;

The laser rangefinder is arranged in a plane perpendicular to the extension direction of the outer cylinder, and is used to detect the eccentricity of the outer cylinder; the controller is used to detect the eccentricity of the outer cylinder when the eccentricity exceeds a first eccentricity threshold When the alarm module is driven to issue a first-level alarm.

In a second aspect, an embodiment of the present disclosure further provides a method for monitoring a wind-assisted rotor, which is applicable to the monitoring system for a wind-assisted rotor provided by any embodiment of the present disclosure, and the method for monitoring a wind-assisted rotor includes:

Control multiple groups of acceleration sensors to detect the vibration speed and vibration acceleration of the base, and drive the alarm module to issue a first-level alarm when the vibration speed exceeds the first speed threshold, and/or when the vibration acceleration exceeds the first acceleration threshold ;

controlling the strain gauge to detect the deformation data of the outer cylinder of the wind-assisted rotor, and driving the alarm module to issue a first-level alarm when the deformation data exceeds a first deformation threshold;

The laser range finder is controlled to detect the eccentricity of the outer cylinder, and when the eccentricity exceeds the first eccentricity threshold, the alarm module is driven to issue a first-level alarm.

In the present disclosure, a monitoring system for a wind-assisted rotor includes multiple sets of acceleration sensors, multiple strain gauges, and at least two laser rangefinders. Among them, the acceleration sensor can measure the vibration speed and vibration acceleration of the base of the wind-assisted rotor, and the controller drives the alarm module to issue a first-level alarm when the vibration speed exceeds the first speed threshold or the vibration acceleration exceeds the first acceleration threshold, prompting the crew. Overhaul the base to prevent the base from affecting the hull; the strain gauge can measure the deformation data of the rotor (outer cylinder) of the wind-assisted rotor during the rotation process, and the controller drives the alarm module to issue an alarm when the deformation data exceeds the first deformation threshold. The first-level alarm reminds the crew to reinforce the outer cylinder to prevent the deformation of the outer cylinder from causing danger; the laser range finder can measure the eccentricity of the outer cylinder, and the controller can drive the alarm module to issue a first-level alarm when the eccentricity is greater than the first eccentricity threshold to avoid The outer cylinder shakes during the rotation, which causes great harm. In this embodiment, the monitoring system can monitor various operating parameters of the wind-assisted rotor in real time, and even issue an alarm when the operating state exceeds the safe range, so that the user can perform maintenance and ensure the safe operation of the wind-assisted rotor.

Description of drawings

1 is a schematic structural diagram of a monitoring system for a wind-assisted rotor provided by an embodiment of the present disclosure;

2 is a schematic structural diagram of a wind-assisted rotor provided by an embodiment of the present disclosure;

3 is a schematic structural diagram of another wind-assisted rotor provided by an embodiment of the present disclosure;

4 is a schematic structural diagram of another monitoring system for a wind-assisted rotor provided by an embodiment of the present disclosure;

5 is a schematic structural diagram of another wind-assisted rotor provided by an embodiment of the present disclosure;

6 is a schematic flowchart of a monitoring method for a force-assisted rotor provided by an embodiment of the present disclosure;

7 is a schematic flowchart of another method for monitoring a wind-assisted rotor provided by an embodiment of the present disclosure;

FIG. 8 is a schematic flowchart of a monitoring method for a wind-assisted rotor provided by an embodiment of the present disclosure.

detailed description

The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, but not to limit the present disclosure. It should also be noted that, for the convenience of description, the drawings only show some but not all structures related to the present disclosure.

During the operation of the rotor (outer cylinder) of the wind-assisted rotor monitoring system, abnormal vibration, deformation, etc. not only reflect the abnormal working state of the rotor's local equipment, but also may reflect the overall operating state of the rotor and the working environment beyond the allowable range. , must be emergency braking to prevent the occurrence of danger. In the monitoring system of the wind-assisted rotor in this embodiment, by analyzing the possible risks during the operation of the rotor, it proposes the tolerance limit of each part of the rotor, and collects and analyzes the operating parameters through various sensors, so as to monitor the operation of the rotor. Process. Once the operating parameters exceed the limit, an alarm will be issued, or the operation of the wind-assisted rotor will be stopped urgently.

Specifically, an embodiment of the present disclosure provides a monitoring system for a wind-assisted rotor, including: a controller; multiple sets of acceleration sensors, multiple strain gauges, at least two laser rangefinders, and an alarm module electrically connected to the controller ;

Multiple sets of acceleration sensors are respectively arranged on the base of the wind-assisted rotor to detect the vibration speed and vibration acceleration of the base; the controller is used to detect when the vibration speed exceeds the first speed threshold, and/or, the vibration acceleration exceeds the first speed threshold. When an acceleration threshold is reached, the alarm module is driven to issue a first-level alarm;

The strain gauge is arranged on the inner wall of the outer cylinder of the wind-assisted rotor, and is used to detect the deformation data of the outer cylinder; the controller is used to drive the alarm module to issue a first-level alarm when the deformation data exceeds the first deformation threshold;

The laser rangefinder is arranged in the plane perpendicular to the extension direction of the outer cylinder, and is used to detect the eccentricity of the outer cylinder; the controller is used to drive the alarm module to issue a first-level alarm when the eccentricity exceeds the first eccentricity threshold.

In the embodiment of the present disclosure, the monitoring system for the wind-assisted rotor includes multiple sets of acceleration sensors, multiple strain gauges, and at least two laser rangefinders. Among them, the acceleration sensor can measure the vibration speed and vibration acceleration of the base of the wind-assisted rotor, and the controller drives the alarm module to issue a first-level alarm when the vibration speed exceeds the first speed threshold or the vibration acceleration exceeds the first acceleration threshold, prompting the crew. Overhaul the base to prevent the base from affecting the hull; the strain gauge can measure the deformation data of the rotor (outer cylinder) of the wind-assisted rotor during the rotation process, and the controller drives the alarm module to issue an alarm when the deformation data exceeds the first deformation threshold. The first-level alarm reminds the crew to reinforce the outer cylinder to prevent the deformation of the outer cylinder from causing danger; the laser range finder can measure the eccentricity of the outer cylinder, and the controller can drive the alarm module to issue a first-level alarm when the eccentricity is greater than the first eccentricity threshold to avoid The outer cylinder shakes during the rotation, which causes great harm. In this embodiment, the monitoring system can monitor various operating parameters of the wind-assisted rotor in real time, and even issue an alarm when the operating state exceeds the safe range, so that the user can perform maintenance and ensure the safe operation of the wind-assisted rotor.

The above is the core idea of the present disclosure, and the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present disclosure.

1 is a schematic structural diagram of a monitoring system for a wind-assisted rotor provided by an embodiment of the present disclosure. As shown in FIG. 1 , the wind-assisted rotor includes a controller 14 ; A plurality of strain gauges 151 , at least two laser rangefinders 12 and an alarm module 13 . As shown in FIG. 2, FIG. 2 is a schematic structural diagram of a wind-assisted rotor provided by an embodiment of the present disclosure. The wind-assisted rotor includes an inner tower 23 and an outer cylinder 21. The inner tower 23 is fixedly connected to the base 22, and the outer The barrel 21 is movably connected with the base 22 and can rotate around the inner tower 23 . During the rotation of the rotor (outer cylinder 21), the impact of the vibration of the base 22 on the hull. For example, when the base 22 vibrates too violently, the rotation of the outer cylinder 21 may be affected, and the outer cylinder 21 may even be damaged. Set up multiple sets of acceleration sensors 11, optionally, multiple sets of three-phase acceleration sensors can be used to monitor the vibration speed and vibration acceleration of the base 22, and when the vibration speed exceeds the first speed threshold, and/or, the vibration acceleration When the first acceleration threshold is exceeded, a first-level alarm is issued, prompting the crew to repair the base 22, for example, to detect whether the screws fixing the base 22 are loose or not. Optionally, in order to further enhance the detection accuracy of the pedestal, when monitoring the vibration of the pedestal 22, first determine the position of the area where the pedestal 22 vibrates obviously by means of numerical calculation or experiment, and connect the multiple groups of acceleration sensors 11 It is installed at the place where the vibration of each base 22 is obvious, and the vibration speed and acceleration of the area are monitored online.

At the same time, the high-speed rotation of the outer cylinder 21 easily causes the deformation of the outer cylinder 21, which has a greater impact on the rotor outer cylinder 21. In this implementation, a plurality of strain gauges 151 are arranged on the inner wall of the outer cylinder to detect the deformation data of the outer cylinder. The controller 14 When the deformation data exceeds the first deformation threshold, the driving alarm module 13 issues a first-level alarm. Because the outer cylinder 21 is formed by splicing a plurality of sheet-like structures 211 , the areas where the outer cylinder 21 is greatly deformed are the areas where the outer cylinder segments meet, the mounting seat connection between the inner tower 23 and the outer cylinder 21 . Optionally, this embodiment is optional. As shown in FIG. 3 , FIG. 3 is a schematic structural diagram of another wind-assisted rotor provided by an embodiment of the present disclosure. At least one strain gauge 151 is disposed outside the wind-assisted rotor. At the junction of the cylinder segments; at least one strain gauge 151 is arranged at the connection of the mounting seat between the inner tower 23 of the wind-assisted rotor and the outer cylinder 21; the deformation data of the outer cylinder 21 includes at least one of the following: tensile deformation, Compression set and torsional set. For each monitoring section, at least four sets of strain gauges 151 need to be symmetrically arranged in the circumferential direction to monitor the tensile, compression and torsion data of the outer cylinder, so as to effectively avoid damage to the outer cylinder 21 . At the current stage of processing and installation of the outer cylinder, it is divided into 6 pieces of sheet-like structures 211 . The position where the outer cylinder 21 has the greatest strain is the position where the second, third and fourth sections of outer cylinders meet from top to bottom. After calculation, the ultimate strain can reach 2000με, and the strain under normal working conditions is below 500με. In this test plan, four sets of strain gauges 151 are to be installed on each of the three cross sections to test the tension, compression and torsion at various angles.

Optionally, continuing to refer to FIG. 3 , the monitoring system for the wind-assisted rotor may further include: a wireless strain node 161 and a wireless receiver 171 ; the wireless strain node 161 is arranged on the inner wall of the outer cylinder and is used to obtain the deformation data output by the strain gauge 151 The wireless receiver 171 is arranged on the outer wall of the inner tower for receiving the deformation data output by the wireless strain node 161 and sending the deformation data to the controller; the wireless strain node 161 adopts battery power supply, slip ring power supply, wireless electromagnetic induction power supply and solar power supply. at least one of. In this embodiment, the wireless strain node 161 is connected to the strain gauge 151 through a wire, and can obtain the deformation data output by the strain gauge 151. The wireless receiver 171 realizes wireless communication connection with the wireless strain node 161, and can output the deformation data to the in the controller.

In this embodiment, the wireless strain node 161 can use at least one of battery power supply, slip ring power supply, wireless electromagnetic induction power supply and solar power supply. The wireless strain node 161 is arranged on the outer wall of the outer cylinder and rotates with the outer cylinder 21, so the wireless strain The node 161 needs to be charged by means of wireless charging, such as slip ring power supply, wireless electromagnetic induction power supply, solar power supply, etc., or by the rechargeable battery provided on the outer cylinder 21, and the wireless strain node 161 is not charged in this embodiment. limited. Optionally, as shown in FIG. 3 , the wireless strain node 161 is powered by solar energy; the monitoring system for the wind-assisted rotor may further include: a solar panel 18 ; When the wireless strain node 161 is powered by solar power, a solar cell panel 18 can be arranged on the vertex of the outer cylinder 21 to supply power to the wireless strain node. In addition, if the wireless strain node 161 is powered by a slip ring power supply, power supply slip rings can be provided on the inner wall of the outer cylinder and the outer wall of the inner tower, so that the main power module on the base 22 sends power to the wireless strain node 161 .

In addition, the diameter and length of the outer cylinder 21 are relatively large, which makes it difficult to process. If the rotor outer cylinder is processed asymmetrically, it will cause the rotor to shake during the rotation process and increase the risk of deformation of the outer cylinder. Specifically, the height of the inner tower is less than The height of the outer cylinder, if the rotor outer cylinder is processed asymmetrically, under the action of centrifugal force, the top of the outer cylinder without the support of the inner tower will shake during the rotation process, which will deviate from the original motion trajectory and cause great harm to the rotor. No less than 2 laser rangefinders are arranged in the surrounding environment of the outer cylinder 21, and the laser rangefinders can be installed at a certain interval angle, and the interval angle can be 151-90 degrees. To monitor the eccentricity of the outer cylinder 21, the controller can When the eccentricity exceeds the first eccentricity threshold, the alarm module is driven to issue a first-level alarm, prompting the crew to perform maintenance. In this embodiment, a non-contact laser surface velocimeter can be used to measure the swaying amplitude of the rotor, that is, the measurement of the eccentricity, through the interference waves formed by two laser beams at a certain angle. Exemplarily, the laser range finder can be installed at a distance of 300 mm from the surface of the outer cylinder 21, the detectable shaking amplitude is between ±100 mm, the minimum resolution is 10 μm, and the sampling frequency is 20 kHz, which is suitable for the use of the rotor prototype.

To sum up, the monitoring system of the wind-assisted rotor in this embodiment can drive the alarm module to issue a first-level alarm when the vibration speed exceeds the first speed threshold or the vibration acceleration exceeds the first acceleration threshold, and drive when the deformation data exceeds the first deformation threshold. The alarm module issues a first-level alarm, and drives the alarm module to issue a first-level alarm when the eccentricity is greater than the first eccentricity threshold. Make the rotor work within the parameter limit, improve the monitoring accuracy, and effectively avoid damage to the outer cylinder of the wind-assisted rotor.

On the basis of the above embodiment, optionally, the monitoring system for the wind-assisted rotor may further include: a noise monitor 15; the noise monitor 15 is arranged in the working environment of the wind-assisted rotor and is used to measure the wind-assisted rotor The controller 14 is electrically connected to the noise monitor 15 for driving the alarm module 13 to issue a first-level alarm when the noise value exceeds the first noise threshold.

The main sources of rotor noise are the rotation of the motor and the rotor, and the friction of the limit wheel. During the rotation of the rotor, the noise generated, the impact on the working environment of the crew, the monitoring of the noise, the real-time measurement of the noise level of the rotor working area through the noise monitor 15, the controller 14 and the noise monitor 15 are electrically connected to monitor the noise. When the value exceeds the first noise threshold, the alarm module 13 is driven to issue a first-level alarm. The main sources of rotor noise are the rotation of the motor and the rotor, and the friction of the limit wheel. This test plan uses the existing hand-held sound level meter in the ship room to test the noise level of the rotor, analyze the noise spectrum, and guide the development of vibration reduction and noise reduction.

Optionally, FIG. 4 is a schematic structural diagram of another wind-assisted rotor monitoring system provided by an embodiment of the present disclosure, and FIG. 5 is a structural schematic diagram of another wind-assisted rotor provided by an embodiment of the present disclosure. The monitoring system of the rotor may also include: a patch-type temperature sensor 16 and an infrared temperature sensor; the patch-type temperature sensor 16 is arranged on the motor casing of the wind-assisted rotor to detect the ambient temperature of the motor; the controller 14 and the patch-type temperature sensor 16 The temperature sensor 16 is electrically connected to calculate the bearing temperature of the motor according to the motor ambient temperature; the controller 14 is also used to drive the alarm module 13 to issue a first-level alarm when the bearing temperature of the motor is greater than the first bearing temperature threshold; the infrared temperature sensor 16 is set In the working environment of the wind-assisted rotor, it is used to measure the temperature of the limit wheel of the wind-assisted rotor; the controller 14 is electrically connected with the infrared temperature sensor 16, and is used for when the temperature of the limit wheel is greater than the temperature of the first limit wheel When the threshold value is reached, the alarm module 13 is driven to issue a first-level alarm.

The motor rotates at high speed under high load, which causes the motor to heat up and affects the motor. The SMD temperature sensor 16 is installed at the motor bearing bush and the outer casing to monitor the motor ambient temperature in real time. After the data is transmitted to the controller 14, the heat transfer calculation software in the system is used to convert the motor bearing temperature to assess whether the motor bearing is overheated, and drive the alarm module 13 to issue a first-level alarm when the motor bearing temperature is greater than the first bearing temperature threshold.

During the rotation of the outer cylinder of the rotor, in order to prevent the lower end of the outer cylinder from shaking too much, 8 limit wheels are installed on the outside of the lower end of the outer cylinder for tightening. In the process of friction between the limit wheel and the outer cylinder and high-speed rotation, if the pressure between the limit wheel and the outer cylinder is too large, the temperature of the limit wheel will be too high, which will affect the use of the equipment. In this embodiment, a non-contact infrared temperature sensor 16 is used to measure the temperature of the contact position between the limit wheel and the outer cylinder, and when the limit wheel temperature is greater than the first limit wheel temperature threshold, the alarm module 13 is driven to issue a first-level alarm, Prompt the crew to cool down.

Optionally, the monitoring system for the wind-assisted rotor may further include: a first rotational speed measuring instrument 18 and a second rotational speed measuring instrument 19; the first rotational speed measuring instrument 18 is arranged on the motor bearing and is used to detect the rotational speed of the motor; the second rotational speed The measuring instrument 19 is arranged on the outer cylinder and is used to detect the rotation speed of the outer cylinder; the controller 14 is electrically connected to the first rotation speed measuring instrument 18 and the second rotation speed measuring instrument 19 respectively, and is used to obtain the rotation speed between the motor rotation speed and the outer cylinder rotation speed. The difference is used to drive the alarm module to issue a first-level alarm when the speed difference is greater than the first speed difference threshold.

During the operation of the wind-assisted rotor, the motor drives the outer cylinder to rotate, which is connected by the pulley. When the pulley wears and slips, there is a risk of a sudden stall when the outer cylinder rotates. In order to distinguish whether the pulley is slipping, it is necessary to measure the speed of the motor and the speed of the outer cylinder separately, and compare the difference between the two. When the difference is too large, it is slipping, and the pulley should be replaced in time. The first rotational speed measuring instrument 18 is used to measure the rotational speed of the electrode, and the second rotational speed measuring instrument 19 is used to measure the rotational speed of the outer cylinder. The controller 14 compares the above-mentioned rotational speed of the electrode with the rotational speed of the outer cylinder. The drive alarm module issues a first-level alarm. When there is a speed change gear between the motor and the outer cylinder, for the comparison of the speed of the two, the conversion of the speed must be considered. The motor speed can be measured in the form of outputting the motor running frequency by using the frequency converter matched with the motor; or by installing an encoder (the first speed measuring instrument 18 ) on the motor bearing. For the measurement of the rotational speed of the outer cylinder, a pulse-type rotational speed measuring instrument (the second rotational speed measuring instrument 19 ) or an encoder can be used.

Optionally, the monitoring system for the wind-assisted rotor may further include a storage module and a communication module; the storage module is electrically connected to the controller 14 for storing the detection data of the acceleration sensor 11, the strain gauge and the laser range finder 12, and store the alarm information of the alarm module 13; the communication module is electrically connected to the controller 14, and is used to remotely transmit the detection data of the acceleration sensor 11, the strain gauge 151 and the laser range finder 12 and the alarm information of the alarm module 13 to the shore. base system.

The monitoring system of the wind-assisted rotor has an interface to the alarm system of the whole ship, and can also operate independently. When the monitoring system of the wind booster rotor is connected to the whole ship alarm system, the abnormal parts and parameters can be displayed in a highlighted form on the operation interface, and a first-level alarm can be issued to the crew in the form of sound or light, prompting The crew performs maintenance and solves the abnormal operation. Of course, in this embodiment, multi-level alarms, such as a second-level alarm, a third-level alarm, etc., can be set, so as to adopt different solutions for overloaded operation of different degrees. For example, a secondary alarm can be set, and when the parameter exceeds the emergency braking threshold, the control system of the wind-assisted rotor can be bypassed and the authority to implement emergency braking on the rotor. The monitoring system of the wind-assisted rotor includes a storage module, which can store the real-time measurement data of each sensor and record each secondary alarm. In addition, the monitoring system of the wind booster rotor also includes a communication module, which can include a 4G module, a 5G module or a satellite communication module, which is used to remotely transmit the detection data and alarm information stored in the storage module to the shore-based system, which is convenient for the ship Donghe designers can grasp the operation of the wind booster rotor in real time.

Based on the same concept, an embodiment of the present disclosure also provides a monitoring method for a wind-assisted rotor. FIG. 6 is a schematic flowchart of a method for monitoring a force-assisted rotor provided by an embodiment of the present disclosure. As shown in FIG. 6 , the method of this embodiment includes the following steps:

Step S110, control multiple groups of acceleration sensors to detect the vibration speed and vibration acceleration of the base, and drive the alarm module to issue a first-level alarm when the vibration speed exceeds the first speed threshold, and/or when the vibration acceleration exceeds the first acceleration threshold.

Step S120 , controlling the strain gauge to detect the deformation data of the outer cylinder of the wind-assisted rotor, and driving the alarm module to issue a first-level alarm when the deformation data exceeds the first deformation threshold.

Step S130 , controlling the laser range finder to detect the eccentricity of the outer cylinder, and driving the alarm module to issue a first-level alarm when the eccentricity exceeds the first eccentricity threshold.

The monitoring system of the wind-assisted rotor includes multiple sets of acceleration sensors, multiple strain gauges and at least two laser rangefinders. Among them, the acceleration sensor can measure the vibration speed and vibration acceleration of the base of the wind-assisted rotor, and the controller drives the alarm module to issue a first-level alarm when the vibration speed exceeds the first speed threshold or the vibration acceleration exceeds the first acceleration threshold, prompting the crew. Overhaul the base to prevent the base from affecting the hull; the strain gauge can measure the deformation data of the rotor (outer cylinder) of the wind-assisted rotor during the rotation process, and the controller drives the alarm module to issue an alarm when the deformation data exceeds the first deformation threshold. The first-level alarm reminds the crew to reinforce the outer cylinder to prevent the deformation of the outer cylinder from causing danger; the laser range finder can measure the eccentricity of the outer cylinder, and the controller can drive the alarm module to issue a first-level alarm when the eccentricity is greater than the first eccentricity threshold to avoid The outer cylinder shakes during the rotation, which causes great harm. In this embodiment, the monitoring system can monitor various operating parameters of the wind-assisted rotor in real time, and even issue an alarm when the operating state exceeds the safe range, so that the user can perform maintenance and ensure the safe operation of the wind-assisted rotor.

On the basis of the above-mentioned embodiments, the embodiments of the present disclosure further provide a method for monitoring a wind-assisted rotor. The monitoring method for a wind-assisted rotor is provided with two levels of monitoring data limits, the smaller level being the first level. level alarm (sound and light alarm) limit; the larger level two is the level two alarm limit, which can brake the wind booster rotor urgently, so that the wind booster rotor stops working. FIG. 7 is a schematic flowchart of another method for monitoring a wind-assisted rotor provided by an embodiment of the present disclosure. As shown in FIG. 7 , the method of this embodiment further includes the following steps:

Step S210, in the first time threshold after the alarm module sends out the first-level alarm, continue to judge whether the vibration speed exceeds the first speed threshold or whether the vibration acceleration exceeds the first acceleration threshold; if so, control the braking component to brake the outer cylinder, and issued a secondary alarm.

Step S220: Continue to judge that the deformation data exceeds the first deformation threshold within the first time threshold after the alarm module issues a first-level alarm; if so, control the braking component to brake the outer cylinder and issue a second-level alarm.

Step S230: Continue to judge that the eccentricity exceeds the first eccentricity threshold within the first time threshold after the alarm module issues the first-level alarm; if so, control the braking component to brake the outer cylinder and issue a second-level alarm.

The monitoring system of the wind-assisted rotor, independent of the wind-assisted rotor, is the key to ensuring the safe operation of the rotor. In this embodiment, a second-level alarm is set. When each parameter exceeds the first set threshold, a first-level alarm is issued. Remind the staff to check the abnormal state in time. If the staff solves the above abnormal state within the first time threshold, the outer cylinder can continue to rotate, and the controller can store the next-level alarm record in the memory. If the staff does not resolve the abnormal state within the first time threshold, or if no one conducts investigation, a secondary alarm can be issued, the wind booster rotor can be formulated, and the secondary alarm can be recorded. Optionally, the above-mentioned first time threshold may be 5 min to 10 min.

This implementation only introduces the second-level alarm for parameters such as the vibration speed and acceleration of the base, the deformation data of the outer cylinder, and the eccentricity of the outer cylinder. Of course, the parameters that determine the operating state of the wind-assisted rotor in this embodiment can also be Including the noise value of the wind-assisted rotor, the bearing temperature of the motor, the temperature of the limit wheel of the wind-assisted rotor, and the speed difference between the motor speed and the outer cylinder speed, etc. Optionally, within the first time threshold after the alarm module issues a first-level alarm, continue to judge whether the noise value exceeds the first noise threshold; if so, control the braking component to brake the outer cylinder and issue a second-level alarm; Within the first time threshold after the module issues a first-level alarm, it continues to judge whether the bearing temperature of the motor exceeds the first bearing temperature threshold; if so, it controls the braking component to brake the outer cylinder and issues a second-level alarm; Within the first time threshold after the first-level alarm, continue to judge whether the temperature of the limit wheel exceeds the first limit wheel temperature threshold; if so, control the braking component to brake the outer cylinder and issue a second-level alarm; when the alarm module issues a first-level alarm Within the first time threshold after the alarm, continue to judge whether the speed difference between the motor speed and the outer cylinder speed exceeds the first speed difference threshold; if so, control the braking component to brake the outer cylinder and issue a secondary alarm.

In this embodiment, when the measured data exceeds the first-level limit, the monitoring system sends out an acousto-optic alarm to remind the staff to investigate the abnormal state in time. If the staff solves the problem of abnormal operation of the rotor within a limited time, the rotor will continue to work, and the alarm system only needs to record the alarm data. If the staff cannot solve the abnormal operation within the limited time, the rotor will be braked urgently, and the alarm data will be recorded, and the second-level alarm will be used to effectively enhance the monitoring efficiency of the monitoring system of the wind-assisted rotor, and check the abnormal situation as soon as possible.

On the basis of the above embodiments, the embodiments of the present disclosure further provide a monitoring method for a wind-assisted rotor. FIG. 8 is a schematic flowchart of a monitoring method for a wind-assisted rotor provided by an embodiment of the present disclosure. As shown in FIG. 8 , the method of this embodiment includes the following steps:

Step S310, determine whether the vibration speed exceeds the second vibration threshold or whether the vibration acceleration exceeds the second vibration acceleration threshold; if so, control the braking component to brake the outer cylinder and issue a secondary alarm.

Step S320, judging that the deformation data exceeds the second deformation threshold; if so, control the braking component to brake the outer cylinder, and issue a secondary alarm.

Step S330, judging that the eccentricity exceeds the second eccentricity threshold; if so, control the braking component to brake the outer cylinder, and issue a secondary alarm.

In this embodiment, the threshold corresponding to the second-level alarm is set, that is, when the existing parameter exceeds the threshold corresponding to the second-level alarm, the controller controls the braking component of the wind-assisted rotor to directly brake the outer cylinder to prevent dangerous situations. This implementation only introduces the second-level thresholds for parameters such as the vibration speed and vibration acceleration of the base, the deformation data of the outer cylinder, and the eccentricity of the outer cylinder. The parameters may also include the noise value of the wind-assisted rotor, the bearing temperature of the motor, the temperature of the limiting wheel of the wind-assisted rotor, and the rotational speed difference between the rotational speed of the motor and the rotational speed of the outer cylinder. Optionally, judge whether the noise value exceeds the second noise threshold; if so, control the braking component to brake the outer cylinder and issue a second-level alarm; judge whether the bearing temperature of the motor exceeds the second bearing temperature threshold; The moving part brakes the outer cylinder and issues a secondary alarm; judges whether the temperature of the limit wheel exceeds the temperature threshold of the second limit wheel; if so, controls the braking part to brake the outer cylinder and issues a secondary alarm; judges the motor speed Whether the rotational speed difference between the rotational speed of the outer cylinder and the outer cylinder exceeds the second rotational speed difference threshold; if so, control the braking component to brake the outer cylinder and issue a secondary alarm.

Optionally, in this embodiment, the first speed threshold of vibration of the base may be 7.1mm/s, the second speed threshold may be 10mm/s; the first noise threshold may be 90dBA, and the second noise threshold may be 95dBA; The first deformation threshold can be 1000με, the second deformation threshold can be 2000με; the first eccentricity threshold of the outer cylinder can be 5mm, and the second eccentricity threshold can be 10mm; the first bearing temperature threshold can be 50°C, and the second bearing temperature threshold can be The temperature threshold of the first limit wheel can be 65°C, and the temperature threshold of the second limit wheel can be 75°C; the first speed difference threshold between the motor and the outer cylinder can be 1%, and the second speed difference threshold can be 1%. It can be 2%. It should be noted that the above-mentioned secondary parameter threshold is a specific example of this embodiment, and each parameter threshold can also adopt other specific numerical ranges according to the material characteristics of the wind booster rotor and the relevant requirements of the ship construction specification. , which is not limited in this embodiment.

In this embodiment, the alarm system includes two levels of monitoring data limits, the smaller one is the first level alarm limit; the larger level two is the emergency braking limit, which effectively enhances the wind power booster rotor's limit. Monitor the monitoring efficiency of the system and detect abnormal situations early.

Note that the above are only preferred embodiments of the present disclosure and applied technical principles. Those skilled in the art will understand that the present disclosure is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present disclosure. Therefore, although the present disclosure has been described in detail through the above embodiments, the present disclosure is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present disclosure. The scope is determined by the scope of the appended claims.

Claims

A monitoring system for a wind-assisted rotor, comprising: a controller; multiple sets of acceleration sensors, multiple strain gauges, at least two laser rangefinders and an alarm module electrically connected to the controller;

The multiple groups of acceleration sensors are respectively arranged on the base of the wind-assisted rotor for detecting the vibration speed and vibration acceleration of the base; the controller is used to detect when the vibration speed exceeds the first speed threshold, And/or, when the vibration acceleration exceeds the first acceleration threshold, the alarm module is driven to issue a first-level alarm;

The strain gauge is arranged on the inner wall of the outer cylinder of the wind-assisted rotor, and is used to detect the deformation data of the outer cylinder; the controller is used to drive the alarm module when the deformation data exceeds a first deformation threshold issue a first-level alert;

The laser rangefinder is arranged in a plane perpendicular to the extension direction of the outer cylinder, and is used to detect the eccentricity of the outer cylinder; the controller is used to detect the eccentricity of the outer cylinder when the eccentricity exceeds a first eccentricity threshold When the alarm module is driven to issue a first-level alarm.
The monitoring system for a wind-assisted rotor according to claim 1, further comprising: a noise monitor;

The noise monitor is arranged in the working environment of the wind-assisted rotor, and is used for measuring the noise value of the wind-assisted rotor; the controller is electrically connected to the noise monitor, and is used for detecting the noise in the wind-assisted rotor. When the value exceeds the first noise threshold, the alarm module is driven to issue a first-level alarm.
The monitoring system for a wind-assisted rotor according to claim 1, further comprising: a patch-type temperature sensor and an infrared temperature sensor;

The patch-type temperature sensor is arranged on the motor casing of the wind-assisted rotor, and is used to detect the ambient temperature of the motor; the controller is electrically connected to the patch-type temperature sensor, and is used to detect the ambient temperature of the motor according to the The ambient temperature calculates the bearing temperature of the motor; the controller is further configured to drive the alarm module to issue a first-level alarm when the bearing temperature of the motor is greater than the first bearing temperature threshold;

The infrared temperature sensor is arranged in the working environment of the wind-assisted rotor, and is used to measure the temperature of the limit wheel of the wind-assisted rotor; the controller is electrically connected to the infrared temperature sensor for use in When the temperature of the limit wheel is greater than the first limit wheel temperature threshold, the alarm module is driven to issue a first-level alarm.
The monitoring system for a wind-assisted rotor according to claim 1, further comprising: a first rotational speed measuring instrument and a second rotational speed measuring instrument;

The first rotational speed measuring instrument is arranged on the motor bearing and is used to detect the rotational speed of the motor; the second rotational speed measuring instrument is arranged on the outer cylinder and is used to detect the rotational speed of the outer cylinder; A rotational speed measuring instrument is electrically connected to the second rotational speed measuring instrument, and is used for obtaining the rotational speed difference between the rotational speed of the motor and the rotational speed of the outer cylinder, and for obtaining the rotational speed difference between the rotational speed difference and the first rotational speed difference threshold when the rotational speed difference is greater than the first rotational speed difference threshold. When the drive alarm module issues a first-level alarm.
The monitoring system for a wind-assisted rotor according to claim 1, wherein at least one strain gauge is arranged at the intersection of the outer cylinder segments of the wind-assisted rotor; at least one strain gauge is arranged at the wind-assisted rotor the connection of the mounting seat between the inner tower of the rotor and the outer cylinder;

The deformation data of the outer cylinder includes at least one of the following: tensile deformation, compression deformation and torsional deformation.
The monitoring system for a wind-assisted rotor according to claim 1, further comprising: a wireless strain node and a wireless receiver;

The wireless strain node is arranged on the inner wall of the outer cylinder, and is used for obtaining the deformation data output by the strain gauge;

The wireless receiver is arranged on the outer wall of the inner tower, and is used for receiving the deformation data output by the wireless strain node and sending the deformation data to the controller;

The wireless strain node adopts at least one of battery power supply, slip ring power supply, wireless electromagnetic induction power supply and solar power supply.
The monitoring system for a wind-assisted rotor according to claim 6, wherein the wireless strain node is powered by solar energy;

The monitoring system for the wind-assisted rotor further includes: a solar cell panel; the solar cell panel is arranged on the top of the outer cylinder.
The monitoring system for a wind-assisted rotor according to claim 1, further comprising: a storage module and a communication module;

The storage module is electrically connected to the controller, and is used for storing the detection data of the acceleration sensor, the strain gauge and the laser rangefinder, and storing the alarm information of the alarm module;

The communication module is electrically connected with the controller, and is used for remotely transmitting the detection data of the acceleration sensor, the strain gauge and the laser range finder and the alarm information of the alarm module to the shore-based system.
A method for monitoring a wind-assisted rotor, characterized in that it is applicable to the monitoring system for a wind-assisted rotor according to any one of the preceding claims 1-8, and the monitoring method for a wind-assisted rotor comprises:

Control multiple groups of acceleration sensors to detect the vibration speed and vibration acceleration of the base, and drive the alarm module to issue a first-level alarm when the vibration speed exceeds the first speed threshold, and/or when the vibration acceleration exceeds the first acceleration threshold ;

controlling the strain gauge to detect the deformation data of the outer cylinder of the wind-assisted rotor, and driving the alarm module to issue a first-level alarm when the deformation data exceeds a first deformation threshold;

The laser range finder is controlled to detect the eccentricity of the outer cylinder, and when the eccentricity exceeds the first eccentricity threshold, the alarm module is driven to issue a first-level alarm.
The monitoring method for a wind-assisted rotor according to claim 9, further comprising:

Continue to judge whether the vibration speed exceeds the first speed threshold or whether the vibration acceleration exceeds the first acceleration threshold within the first time threshold after the alarm module issues the first-level alarm; if so, control the braking component brake the outer cylinder and issue a secondary alarm;

Within the first time threshold after the alarm module issues the first-level alarm, continue to judge that the deformation data exceeds the first deformation threshold; if so, control the braking component to brake the outer cylinder and issue a second-level alarm ;

Within the first time threshold after the alarm module issues the first-level alarm, continue to judge that the eccentricity exceeds the first eccentricity threshold; if so, control the braking component to brake the outer cylinder and issue a second-level alarm .
The monitoring method for a wind-assisted rotor according to claim 9, further comprising:

Determine whether the vibration speed exceeds the second vibration threshold or whether the vibration acceleration exceeds the second vibration acceleration threshold; if so, control the braking component to brake the outer cylinder and issue a secondary alarm;

Determine that the deformation data exceeds the second deformation threshold; if so, control the braking component to brake the outer cylinder, and issue a secondary alarm;

It is judged that the eccentricity exceeds the second eccentricity threshold; if so, the braking component is controlled to brake the outer cylinder, and a secondary alarm is issued.