CN214376889U

CN214376889U - Liquefaction alarm system for solid bulk cargo for ship and bulk cargo ship

Info

Publication number: CN214376889U
Application number: CN202120615202.2U
Authority: CN
Inventors: 周海仲
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-10-08
Anticipated expiration: 2031-03-25

Abstract

The utility model provides a marine solid bulk cargo liquefaction alarm system and bulk carrier. The liquefaction alarm system for the marine solid bulk cargo comprises a power supply, a level sensor, a signal collector, a computer control terminal and an alarm; wherein: the power supply is used for supplying power to the level sensor and the signal collector; the bulk goods level sensor monitors the position information of bulk goods in real time, converts the position information into signals and transmits the signals to the signal collector; the signal collector collects signals transmitted by the material level sensor and transmits the signals to the computer control terminal; the computer control terminal receives the signal transmitted by the signal collector and triggers an alarm signal when the position of the bulk cargo exceeds a preset threshold value; and the alarm gives an alarm when receiving the alarm signal. The alarm system can be used for monitoring the liquefaction condition of the bulk cargo in the cargo hold of the bulk cargo ship in real time in all weather and giving an alarm when the bulk cargo is liquefied, has high alarm reliability and is favorable for improving the safety of the ship in transporting the solid bulk cargo.

Description

Liquefaction alarm system for solid bulk cargo for ship and bulk cargo ship

Technical Field

The utility model relates to an alarm system especially relates to a solid bulk cargo liquefaction alarm system and bulk carrier for ship.

Background

Shipping is the most prominent mode of transportation in international logistics. At present, about 90% of the total freight volume of import and export in China is transported by sea, which is more than 2/3 of the total freight volume of international trade. In the beginning of 2020, the total number of the global 100 tons and above commercial ships is 9.8 ten thousand, and the total number is 20.6 hundred million tons. Bulk cargo is typically transported by bulk carriers. Bulk carriers are short for bulk carriers and are specially used for transporting unpacked goods, such as bulk dry bulk goods of coal, ore, salt, cement and the like. By the end of 12 months in 2020, total 12312 ships were sold in the global dry bulk market, with a capacity of 9.12 million tons.

When the ship sails on the sea, the ship is subjected to storm loads and sways, and the main engine, the generator and other mechanical equipment can cause the ship body structure to vibrate. The easily fluidized solid bulk cargo can cause the original structure to be damaged under the action of external excitation load, and the water among solid particles is extruded to move, so that the viscosity of part of cargo areas is reduced, the fluidity is enhanced, and then the water flows along with the swinging of the ship, so that the stability of the ship is insufficient, and the ship even overturns in serious conditions, thereby bringing great personnel and property losses.

According to the statistics of the international association of dry bulk shippers, from 2009 to 2018, 188 shipmen were lost due to accidents, and 9 shippers were lost due to liquefaction of bulk cargo, resulting in loss of lives of 101 shipmen. It follows that the consequences of a ship accident caused by liquefaction of bulk cargo are among the most serious of all types of accidents.

A common monitoring method for liquefaction (i.e. fluidization) of bulk cargo is manual detection by a crew opening the cargo hold cover when sea conditions are good during sailing. However, this manual monitoring is often not timely and effective due to the effects of weather, sea conditions, and crew expertise and responsibility; particularly, liquefaction of cargo in the cargo hold and threat to ships generally occur in bad weather and sea conditions, and at the time, the cargo hold cover must be strictly closed, and manual detection cannot be performed, so that stability and safety during transportation of bulk cargo cannot be effectively guaranteed.

At present, no technical means is available for monitoring whether the goods are fluidized when the bulk cargo ship loads the easily fluidized bulk cargo, so that great potential safety hazards are generated, and the safety of the ship and the lives of crew are seriously threatened. In view of this, the utility model is especially provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a marine solid bulk cargo liquefaction alarm system and bulk carrier, this alarm system can carry out all-weather real-time supervision to the liquefaction condition of bulk cargo in the bulk carrier cargo hold and report to the police when the goods produces the liquefaction, and the reliability of reporting to the police is high, security when being favorable to improving the boats and ships transportation solid bulk cargo.

The utility model provides a liquefaction alarm system for solid bulk cargo for ships, which comprises a power supply, a level sensor, a signal collector, a computer control terminal and an alarm; wherein:

the power supply is used for supplying power to the level sensor and the signal collector;

the bulk goods level sensor monitors the position information of bulk goods in real time, converts the position information into signals and transmits the signals to the signal collector;

the signal collector collects signals transmitted by the material level sensor and transmits the signals to the computer control terminal;

the computer control terminal receives the signal transmitted by the signal collector and triggers an alarm signal when the position of the bulk cargo exceeds a preset threshold value;

and the alarm gives an alarm when receiving the alarm signal.

In an embodiment, the power supply is configured to convert power from the marine vessel power system to power suitable for the level sensor and the signal collector.

In one embodiment, the marine solid bulk cargo liquefaction alarm system comprises a plurality of level sensors respectively mounted at upper portions of a plurality of cargo holds, the plurality of cargo holds respectively having respective numbers, each level sensor being configured to monitor distance information of bulk cargo to the level sensor in real time.

Further, the level sensor is a radar sensor, a laser sensor or an ultrasonic sensor.

In one embodiment, the computer-controlled terminal is integrated with a calculation and evaluation module which is used to convert the distance information of the bulk goods from the fill level sensor into height information of the bulk goods and to plot a curve of the change of the height of the bulk goods over time on the basis of the height information.

Further, the computer control terminal can change the alarm threshold value according to the type of the bulk cargo to complete the setting of the alarm function.

Further, the computer control terminal can monitor the height information of the bulk cargo in real time, and display the serial number of the alarm cargo compartment and trigger the alarm when the position of the bulk cargo exceeds a preset alarm threshold value.

In one embodiment, the alarm is an audible and visual alarm, and the audible and visual alarm comprises an alarm lamp and an electroacoustic alarm.

Further, the liquefied warning system for the solid bulk cargo for the ship further comprises a display, the display is used for displaying a human-computer interaction interface of the computer control terminal in real time, and the display can display height information of the bulk cargo, a curve of the cargo height changing along with time, a cargo compartment number for warning and system function information in real time.

The utility model also provides a bulk cargo ship is equipped with above-mentioned arbitrary ship solid bulk cargo liquefaction alarm system.

The utility model discloses a marine solid bulk cargo liquefaction alarm system utilizes level sensor real-time supervision bulk cargo's positional information, the position of computer control terminal at bulk cargo triggers the alarm when exceeding preset threshold value and reports to the police, thereby can carry out all-weather to bulk cargo's liquefaction condition in the bulk cargo hold, 24 h's real-time supervision provides the warning when the goods produces the liquefaction, this alarm system does not rely on weather, sea state and crewman's professional level, the various uncertainties that exist of manual monitoring have been avoided, the security and the reliability of warning are high, security when being favorable to improving boats and ships transportation solid bulk cargo, and then avoid personnel and property loss.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a liquefaction alarm system for solid bulk cargo for ships according to an embodiment of the present invention.

Description of reference numerals:

1: a power source; 2: a level sensor; 3: a signal collector; 4: a computer control terminal; 5: an alarm; 6: a display.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1, the liquefaction alarm system for the marine solid bulk cargo of the embodiment includes a power supply 1, a level sensor 2, a signal collector 3, a computer control terminal 4 and an alarm 5; wherein: the power supply 1 is used for supplying power to the level sensor 2 and the signal collector 3; the level sensor 2 monitors the position information of the bulk cargo in real time, converts the position information into a signal and transmits the signal to the signal collector 3; the signal collector 3 collects the signal transmitted by the level sensor 2 and transmits the signal to the computer control terminal 4; the computer control terminal 4 receives the signal transmitted by the signal collector 3 and triggers an alarm signal when the position of the bulk cargo exceeds a preset threshold value; the alarm 5 gives an alarm when receiving the alarm signal.

The liquefaction alarm system for the solid bulk cargo for the ship of the embodiment is mainly used for monitoring the liquefaction condition of the solid bulk cargo loaded in the cargo hold of the bulk cargo ship and giving an alarm when the bulk cargo is liquefied, so that a crew can take safety measures as early as possible to prevent the bulk cargo from being continuously liquefied and ensure the safety of the ship and the crew, and further ensure the safety of the bulk cargo during transportation.

In the alarm system, a power supply 1 is mainly used for supplying power to a level sensor 2 and a signal collector 3; the specific type and power supply mode of the power supply 1 are not limited as long as the above power supply function can be achieved, for example, the power supply can convert the power of the ship power system into the power (mainly, voltage, ac/dc form) suitable for the level sensor and the signal collector. In the embodiment, the power supply 1 can supply power to the level sensor 2 and the signal collector 3 by converting alternating current of a power system of the bulk carrier into direct current of 24V; in other embodiments, other conventional power supplies in the art may be used to supply power.

The working principle of the alarm system of the embodiment is as follows: when the bulk cargo in the cargo hold is liquefied, the height of the cargo will change. Specifically, when the ship is not shaken violently, the cargo height will rise or fall to a certain degree; when the ship is shaken violently, the liquefied cargo generates a free liquid level and is shaken in the cargo hold along with the ship shaking, so that the cargo is highly unstable. Therefore, the liquefaction condition of the bulk cargo can be obtained by monitoring the height of the bulk cargo in the cargo hold in real time, and if the height change of the bulk cargo exceeds the variation of the alarm threshold value, the alarm 5 is triggered by the computer control terminal 4 to give an alarm, so that a shipman can be reminded to take safety measures as early as possible to avoid liquefaction of the bulk cargo and ensure the safety of ships and shipmen.

The level sensor 2 is mainly used for monitoring the position information of bulk goods in real time; the position information is not strictly limited and may be height information of the bulk cargo or position information related to the height information of the bulk cargo; it will be appreciated that if the level sensor 2 is used to monitor position information which is correlated with the level information of the bulk goods, the position information of the bulk goods can subsequently be converted into level information by means of the computer control terminal 4.

In the present embodiment, the level sensor 2 is used for monitoring the distance information (related to the height information) of the bulk cargo to the level sensor in real time, in which case the level sensor 2 can be mounted in the upper part of the cargo hold; in other embodiments, the level sensor 2 can also directly monitor the height position of the bulk goods in real time. The specific type of level sensor 2 is not strictly limited and may be a radar sensor, a laser sensor, an ultrasonic sensor, etc. which calculates the distance from the cargo surface to the sensor by transmitting an ultrasonic, laser or electromagnetic radar signal from the sensor and receiving an echo signal generated by the cargo surface, which distance may be regarded as position information of the bulk cargo. After monitoring the above-mentioned position information of the bulk goods, the fill-level sensor 2 converts it into an electrical signal, a digital signal or other information output in a desired form according to a certain rule.

The level sensor 2 may be provided in plurality, a plurality of level sensors 2 may be respectively installed at upper portions of a plurality of cargo tanks, each of the plurality of cargo tanks having a respective number, and each level sensor 2 is used for monitoring distance information of bulk cargo to the level sensor 2 in real time; when the position of the bulk cargo exceeds a preset alarm threshold value, the computer control terminal 4 can display the alarm cargo compartment number and trigger the alarm 5.

The signal collector 3 is mainly used for collecting signals transmitted by the level sensor 2 and transmitting the signals to the computer control terminal 4. When the material level sensor 2 outputs a digital signal, the signal collector 3 can directly adopt the digital signal and transmit the digital signal to the computer control terminal 4; when the level sensor 2 outputs an electrical signal, the signal collector 3 can convert the electrical signal into a digital signal and transmit the digital signal to the computer control terminal 4.

The computer control terminal 4 is mainly used for receiving the signal transmitted by the signal collector 3 and triggering an alarm signal when the position of the bulk cargo exceeds a preset threshold value; the specific setting manner of the preset threshold is not strictly limited, and may be, for example, a normal height range of the bulk cargo (i.e., a height range when liquefaction does not occur), and at this time, the computer control terminal 4 triggers an alarm signal when detecting that the position of the bulk cargo exceeds the normal height. In addition, the preset threshold value can also be set as the maximum height change value of the bulk cargo, i.e. the difference between the initial height and the height at which liquefaction occurs, and the computer control terminal 4 triggers an alarm signal when detecting that the position change of the bulk cargo exceeds the maximum height change value. The specific value of the preset threshold value may be tested according to the conventional method in the art according to the type of the bulk cargo, and may be preset in the computer control terminal 4.

Further, in the liquefaction alarm system for the ship solid bulk cargo of the present embodiment, a plurality of preset threshold values for different types of bulk cargo may be preset in the computer control terminal 4, and the computer control terminal 4 may set a corresponding preset threshold value according to the type of the bulk cargo. The type of bulk cargo is not critical and can be, for example, bulk dry bulk cargo such as coal, ore, salt, cement, etc. At this time, the computer control terminal 4 can change the alarm threshold value according to the type of the bulk cargo to complete the alarm function, so that the liquefaction conditions of various types of bulk cargo can be monitored and alarmed.

In the present embodiment, since the level sensor 2 monitors the distance information from the bulk cargo to the level sensor in real time, the computer control terminal 4 further integrates a calculation and analysis module for converting the distance information from the bulk cargo to the level sensor 2 into the height information of the bulk cargo and plotting a curve of the change of the cargo height with time according to the height information. The calculation and analysis module is not strictly limited as long as the corresponding function can be realized, for example, a cargo alarm software system and the like can be realized, and at this time, the cargo alarm software system can be loaded in the computer control terminal 4 so as to realize the functions. It can be understood that the computer control terminal 4 of the present embodiment can monitor the height information of the bulk cargo in real time, draw a curve of the cargo height changing with time, display the cargo compartment number for alarming, complete the alarm function setting, and implement other system functions.

The alarm 5 is mainly used for giving an alarm when receiving an alarm signal; the type of the alarm 5 is not limited, and for example, an audible and visual alarm or the like may be used, and the audible and visual alarm includes an alarm lamp and an electroacoustic alarm 5, which can emit both audible and visible alarm signals at the same time, and has a good alarm effect.

In addition, the liquefaction alarm system for the ship solid bulk cargo of the embodiment may further include a display 6, and the display 6 is configured to display a human-computer interaction interface of the computer control terminal in real time, including information such as height information of the bulk cargo, a time-varying curve of the cargo height, a cargo compartment number where an alarm occurs, and a system parameter setting interface in real time, so that a crew can conveniently check the information at any time.

During the sea transportation of bulk cargo, if the cargo is liquefied, the height of the cargo can be reduced to a certain extent when the ship is sailed under a calm sea condition; when the ship is sailed under a high sea condition, the liquefied goods are shaken, the height of the goods is fluctuated, the changes of the heights of the goods can be detected by the alarm system of the embodiment and give an alarm according to the threshold value set in the computer control terminal software in advance, and after receiving the alarm signal, a crew can start an emergency plan in time according to the field situation, such as timely draining the water in the cargo hold, immediately driving to a nearby wind-sheltering port, changing the course to reduce the rolling, getting contact with a company or a rescue unit to request for rescue, starting a ship abandoning program to prepare the ship abandoning work to strive for the escape time, and the like. The alarm system does not depend on weather, sea conditions and professional levels of crews, various uncertainties existing in manual monitoring are avoided, and the alarm safety and reliability are high.

The liquefaction alarm system for the solid bulk cargo for the ship of the embodiment utilizes the level sensor 2 to monitor the position information of the bulk cargo in real time, the computer control terminal 4 triggers the alarm 5 to give an alarm when the position of the bulk cargo exceeds a preset threshold value, so that the liquefaction condition of the bulk cargo in a bulk cargo hold can be monitored in real time for 24 hours in all weather, and the alarm can be provided when the bulk cargo is liquefied.

Example 2

The embodiment provides a bulk carrier, which is provided with a liquefaction alarm system for the solid bulk cargo for the ship, wherein the liquefaction alarm system for the solid bulk cargo for the ship comprises a power supply, a radar level sensor, a signal collector, a computer control terminal, an alarm software system and an audible and visual alarm.

And the power supply is used for supplying power to the level sensor and the signal collector. The power type and voltage are not critical as long as the requirements of the device are met.

The radar level sensor is arranged at the upper part of the cargo hold and is used for detecting the distance from the cargo to the sensor and transmitting a specific current signal to the signal collector; the basic principle is that electromagnetic waves with certain frequency are vertically and downwards transmitted, the electromagnetic waves reflect echoes upwards after encountering the upper surface of the cargo, the echoes are received by the sensor, and the distance between the upper surface of the cargo in the cabin and the sensor can be obtained by calculating the time difference between transmitted and received signals, multiplying the light speed by the time difference and dividing the time difference by 2.

When the cargo in the cargo hold is liquefied, there will be some variation in cargo height. When the ship does not shake violently, the cargo height can be reduced to a certain degree; when the ship is shaken violently, the liquefied cargo generates free liquid level and is shaken in the cargo hold along with the ship shaking, so that the cargo is unstable in height. The distance from the upper surface of the goods to the sensor is monitored in real time through the radar level sensor, data are sent to the control terminal, the control terminal calculates the height of the goods in real time through software, and when the height of the goods generates a variable quantity exceeding a preset alarm threshold value, a signal is automatically sent to the alarm to send an alarm.

The signal collector is used for collecting the electric signal sent by the level sensor, converting the electric signal into a digital signal and transmitting the digital signal to the computer control terminal.

The computer control terminal is used for loading a cargo alarm software system, and the software system is used for calculating the height of the cargo through an algorithm and keeping continuous monitoring along with time. And when the height of the goods has a change value meeting the preset condition of the system, triggering the audible and visual alarm.

The audible and visual alarm is used for sending audible and visual alarm when receiving the trigger signal, and comprises an alarm lamp and an electroacoustic alarm.

Further, the liquefied warning system for the solid bulk cargo for the ship further comprises a screen, wherein the screen is used for displaying the real-time height of the cargo, the change curve of the height of the cargo along with time, the cargo compartment number for warning and a software operation interface.

The bulk cargo ship of the embodiment is provided with the alarm system, the distance between cargo in the cargo hold and the sensor is monitored in real time through the level sensor, the distance is converted into real-time information of the height of the cargo in the cargo hold through the computer control terminal, and a cargo liquefaction sound-light alarm signal can be sent out when the change of the height of the cargo exceeds an alarm threshold value. In addition, the monitoring software pre-installed on the control terminal can modify the alarm threshold value according to the cargo type, and can display a software interface through the display, wherein the software interface can display the height of the cargo in the cabin in real time, draw a change curve of the height of the cargo along with time and inquire the height of the cargo in the cabin at any time.

The bulk carrier can realize all-weather 24-hour monitoring of the cargo liquefaction condition and provide alarm, does not depend on manual monitoring, avoids various uncertainties of manual monitoring, and is safe and reliable; in addition, the bulk carrier can set scientific alarm threshold values aiming at different cargos, so that the alarm is credible and reliable. The bulk cargo ship of the embodiment can realize the real-time monitoring of the height of the cargo in the cargo hold of the ship by installing the level sensor at the top of the cargo hold of the ship and combining with the signal output equipment and the alarm software system designed according to the actual condition of the ship. If the cargo is liquefied, the height of the cargo can be reduced to a certain extent when the cargo is sailed under a calm sea condition; when sailing at high sea, the liquefied cargo will slosh and the height of the cargo page will fluctuate, and these changes in cargo height can be detected by the alarm system and an alarm generated according to settings in the software beforehand. The bulk carrier of the embodiment can monitor the liquefaction condition of the goods in the cabin in real time for 24 hours, and gives an alarm when the goods are liquefied, so that a crew can take safety measures as early as possible, and the stability and the safety of the bulk carrier in the process of transporting the bulk goods are greatly improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A liquefaction alarm system for solid bulk cargo for ships is characterized by comprising a power supply, a level sensor, a signal collector, a computer control terminal and an alarm; wherein:

and the alarm gives an alarm when receiving the alarm signal.

2. The marine solid bulk cargo liquefaction alarm system of claim 1 wherein the power supply is adapted to convert power from the marine vessel power system to power suitable for the level sensor and the signal collector.

3. The marine solid bulk cargo liquefaction alarm system of claim 1, comprising a plurality of level sensors respectively mounted at upper portions of a plurality of cargo tanks, the plurality of cargo tanks each having a respective number, each level sensor being adapted to monitor in real time distance information of the bulk cargo to the level sensor.

4. The marine solid bulk cargo liquefaction alarm system of claim 3, wherein the level sensor is a radar sensor, a laser sensor or an ultrasonic sensor.

5. The liquefaction alarm system for bulk solid bulk cargo of claim 1, wherein the computerized control terminal is integrated with a calculation and analysis module for converting distance information of the bulk cargo from the level sensor into height information of the bulk cargo and plotting a curve of the cargo height with time based on the height information.

6. The liquefaction alarm system for bulk cargo of a ship according to claim 1, wherein the computer control terminal is capable of changing the alarm threshold value according to the kind of bulk cargo to perform the alarm function setting.

7. The liquefaction alarm system for the marine solid bulk cargo of claim 1, wherein the computer control terminal is capable of monitoring the height information of the bulk cargo in real time and displaying the alarm cargo compartment number and triggering the alarm when the position of the bulk cargo exceeds a preset alarm threshold.

8. The marine solid bulk cargo liquefaction alarm system of claim 1, wherein the alarm is an audible and visual alarm, the audible and visual alarm including an alarm light and an electro-acoustic alarm.

9. The liquefaction alarm system for the ship solid bulk cargo according to claim 1, further comprising a display, wherein the display is used for displaying a human-computer interaction interface of the computer control terminal in real time, and the display can display the height information of the bulk cargo, the curve of the cargo height changing along with time, the alarming cargo compartment number and the system function information in real time.

10. A bulk carrier provided with a liquefaction warning system for solid bulk cargo for ships according to any one of claims 1 to 9.