LNG ship safety monitoring device

Abstract

When the LNG ship safety monitoring device is used, the demisting fan is started, heat generated by the monitor is blown to the monitoring glass, meanwhile, the monitor is cooled, the monitoring glass is demisted through hot air, and after demisting is finished, the demisting air is discharged through the waterproof ventilation holes, so that it is guaranteed that the monitor can conduct monitoring better, and the safety of the ship is guaranteed. Therefore, the LNG ship safety monitoring device can carry out monitoring better, and the problem that fog exists on the monitoring glass and influences monitoring is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of LNG ships, in particular to a safety monitoring device for LNG ships. BACKGROUND

[0002] LNG ships are liquefied natural gas transport ships, and LNG ships are used for sea transportation of liquefied natural gas to complete sea transportation of liquefied natural gas.

[0003] Because the environment at sea is more complex than on land, there is relatively more water vapor in the process of sea transportation, and LNG needs to be stored at low temperature, which causes the temperature of some areas on the ship to be lower. The traditional safety monitoring system is covered with a layer of water mist due to the temperature drop, so that the safety monitoring device for LNG ships cannot monitor the liquefied natural gas tank, affecting the safety during transportation. Once the liquefied natural gas tank leaks or is damaged, a very serious accident will occur.

[0004] At the same time, the safety monitoring system on the LNG ship is often set very high, and it is very inconvenient to use manual demisting. Moreover, the environment at sea is complex, and once the sea waves attack, the LNG ship will sway, further increasing the difficulty of manual demisting.

[0005] Therefore, there is an urgent need for a safety monitoring device for LNG ships to solve the problem of difficulty in demisting of the safety monitoring device for LNG ships. CONTENT OF THE INVENTION

[0006] Therefore, it is necessary to provide a safety monitoring device for LNG ships to solve the above problems.

[0007] Embodiments of the present application provide a safety monitoring device for LNG ships, comprising:

[0008] A shell, an accommodating cavity is formed in the interior of the shell;

[0009] A communication pipeline, one end of the communication pipeline is fixed on a hull plate of the LNG ship, the other end is fixed on the shell and communicated with the accommodating cavity, and the communication pipeline is provided with a waterproof ventilation hole communicated with the accommodating cavity;

[0010] A demisting fan is arranged in the accommodating cavity;

[0011] A monitor is arranged in the accommodating cavity;

[0012] A monitoring glass is installed on the shell, the monitor is located between the demisting fan and the monitoring glass, the shooting head of the monitor is arranged opposite to the monitoring glass, and the demisting fan is used to blow the heat generated by the monitor to the monitoring glass.

[0013] In at least one embodiment of the present application, the LNG ship safety monitoring device further comprises:

[0014] A ring-shaped heating wire is installed on the monitoring glass close to the side of the monitor.

[0015] In at least one embodiment of the present application, the ring-shaped heating wire is arranged in a spiral shape on the surface of the monitoring glass, and the orthographic projection of the ring-shaped heating wire on the surface of the monitoring glass is located outside the orthographic projection of the shooting head of the monitor on the surface of the monitoring glass.

[0016] In at least one embodiment of the present application, the ring-shaped heating wire is arranged on the surface of the blade of the demisting fan for heating the airflow entering the demisting fan.

[0017] In at least one embodiment of the present application, the LNG ship safety monitoring device further comprises:

[0018] A first driving motor is arranged in the communication pipeline, and the output shaft of the first driving motor at least partially extends into the accommodating cavity;

[0019] A mounting plate is located in the accommodating cavity and fixedly connected with the output shaft of the first driving motor, and the monitor is mounted on the mounting plate;

[0020] The first driving motor is used to drive the mounting plate and the monitor to rotate horizontally around the central axis of the output shaft.

[0021] In at least one embodiment of the present application, the LNG ship safety monitoring device further comprises:

[0022] A second driving motor is arranged on the mounting plate, and the output shaft of the second driving motor is fixedly connected with the monitor to drive the monitor to rotate around the central axis of the output shaft of the second driving motor.

[0023] In at least one embodiment of the present application, the first driving motor and the second driving motor are arranged vertically.

[0024] In at least one embodiment of the present application, the LNG ship safety monitoring device further comprises:

[0025] An infrared tracker is mounted on the mounting plate and arranged opposite to the monitoring glass.

[0026] In at least one embodiment of the present application, the LNG ship safety monitoring device further comprises:

[0027] A circuit board is arranged on the mounting plate and electrically connected with the infrared tracker, the first driving motor, the second driving motor, the annular heating wire, the defogging fan and the monitor.

[0028] In at least one embodiment of the present application, the circuit board comprises:

[0029] A signal transmission module is configured to transmit a video signal.

[0030] An infrared tracking module is configured to generate a tracking signal according to an infrared temperature.

[0031] A tracking driving module is configured to drive the first driving motor or the second driving motor to rotate according to the tracking signal.

[0032] The LNG ship safety monitoring device according to the embodiment has at least the following beneficial effects:

[0033] The LNG ship safety monitoring device provided above is used, the defogging fan is started, the heat generated by the monitor is blown to the monitoring glass, the monitor is cooled at the same time, the hot air defogs the monitoring glass, and the hot air is discharged through the waterproof ventilation hole after defogging, so that the monitor can better perform monitoring, the LNG ship safety monitoring device can better perform monitoring, and the problem that the monitoring glass cannot be monitored due to the presence of fog on the monitoring glass is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0034] In the drawings, like reference numerals refer to like elements throughout the various drawings. The drawings are not necessarily to scale, emphasis instead being placed on illustrating principles of the application. It should be understood that the drawings are merely depictions of some embodiments of the application and should not be construed as limiting the scope of the application.

[0035] Figure 1 FIG. 1 is a structural schematic diagram of an LNG ship safety monitoring device according to an embodiment of the present application;

[0036] Figure 2 FIG. 2 is an exploded view of the LNG ship safety monitoring device according to the embodiment of the present application;

[0037] Figure 3 FIG. 3 is a sectional view of the LNG ship safety monitoring device according to the embodiment of the present application; Figure 1

[0038] FIG. 4 is another angle sectional view of the LNG ship safety monitoring device according to the embodiment of the present application; Figure 4 Figure 1 FIG. 5 is a structural block diagram of a circuit board according to the embodiment of the present application.

[0039] Figure 5 Figure 2

[0040] MAIN ELEMENT SYMBOL EXPLANATION ​​​

[0041] 100, LNG ship safety monitoring device;

[0042] 110, housing; 110a, accommodating cavity;

[0043] 120, communication pipeline; 120a, waterproof air vent;

[0044] 130, demisting fan;

[0045] 140, monitor;

[0046] 150, monitoring glass;

[0047] 160, annular heating wire;

[0048] 170, first driving motor;

[0049] 180, mounting plate;

[0050] 190, second driving motor;

[0051] 200, infrared tracker;

[0052] 210, circuit board; 211, signal transmission module; 212, infrared tracking module; 213, tracking driving module. DETAILED DESCRIPTION

[0053] The embodiments of the present application will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of, but not all of the embodiments of the present application.

[0054] It should be noted that when one component is considered to be "connected" to another component, it can be directly connected to the other component or can exist with a middle component. When one component is considered to be "provided on" another component, it can be directly provided on the other component or can exist with a middle component. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and the like used herein are for illustrative purposes only.

[0055] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0056] The embodiments of the present application provide a LNG ship safety monitoring device 100, comprising:

[0057] The housing 110 has an accommodating cavity 110a formed inside;

[0058] A communication pipe 120 is fixed at one end to a hull plate of the LNG ship and at the other end to the shell 110 and communicates with the accommodating cavity 110a, and the communication pipe 120 is provided with a waterproof ventilation hole 120a communicating with the accommodating cavity 110a;

[0059] A defogging fan 130 is arranged in the accommodating cavity 110a.

[0060] A monitor 140 is arranged in the accommodating cavity 110a.

[0061] A monitoring glass 150 is installed on the shell 110, the monitor 140 is located between the defogging fan 130 and the monitoring glass 150, and the shooting head of the monitor 140 faces the monitoring glass 150.

[0062] Please refer to Figures 1-4 In this embodiment, when in use, the defogging fan 130 is started to blow the heat generated by the monitor 140 to the monitoring glass 150, at the same time, the monitor 140 is cooled, the hot air defogs the monitoring glass 150, and after defogging, the hot air is discharged through the waterproof ventilation hole 120a, so as to ensure that the monitor 140 can better monitor, so that the LNG ship safety monitoring device 100 can better monitor, and the problem that the monitoring glass 150 cannot be monitored due to the existence of fog is avoided.

[0063] It should be noted that the shell 110 is a substantially hemispherical shell 110, the accommodating cavity 110a is a hollow space in the shell 110, the communication pipe 120 is a hollow annular pipe, the waterproof ventilation hole 120a is a through groove, and the communication pipe 120 is provided with a waterproof plate, the waterproof plate blocks the waterproof ventilation hole 120a in the direction of the waterproof ventilation hole 120a, and a connecting groove is formed between the waterproof plate and the communication pipe 120, the connecting groove communicates the waterproof ventilation hole 120a and the inside of the communication pipe 120, so as to avoid water entering the communication pipe 120 through the waterproof ventilation hole 120a. In some examples, the defogging fan 130 can be a fan. The monitor 140 can be a camera. The monitoring glass 150 can be transparent glass.

[0064] In at least one embodiment of the present application, the LNG ship safety monitoring device 100 further comprises an annular heating wire 160 installed on the monitoring glass 150 close to the monitor 140.

[0065] Please refer to Figures 1-4In the embodiment, the annular heating wire 160 is used for heating, and the defogging fan 130 blows the heat generated by the monitor 140 and the annular heating wire 160 to the monitor glass 150, so as to defog the monitor glass 150 and avoid that the monitor 140 cannot monitor through the monitor glass 150 due to the fog.

[0066] It should be noted that the annular heating wire 160 is an annular heating wire made of materials such as iron-chromium-aluminum alloy, nickel-chromium alloy, and copper-nickel alloy. The heat generated by the annular heating wire 160 is used for heating the monitor glass 150, so as to avoid that the fog is attached to the monitor glass 150 and ensure that the picture shot by the monitor 140 can be clearly presented.

[0067] In at least one embodiment of the present application, the annular heating wire 160 is spirally arranged on the surface of the monitor glass 150, and the orthographic projection of the annular heating wire 160 on the surface of the monitor glass is located at the periphery of the orthographic projection of the shooting head of the monitor 140 on the surface of the monitor glass.

[0068] Please refer to Figures 1-4 In the embodiment, the annular heating wire 160 is arranged at the periphery of the shooting head of the monitor 140, so that the annular heating wire 160 does not block the monitor 140, and the monitor 140 is not blocked due to the arrangement position of the annular heating wire 160.

[0069] In some embodiments, the annular heating wire 160 can also be arranged on the surface of the blade of the defogging fan 130.

[0070] The airflow entering the defogging fan 130 can be heated by the annular heating wire 160, so that the air blown by the defogging fan 130 to the monitor glass is warm air with a certain temperature and can be used for defogging. Such arrangement not only avoids that the annular heating wire 160 affects the monitoring field of view of the monitor 140, but also provides warm air when the monitor 140 generates less heat, so as to ensure the defogging effect.

[0071] In some embodiments, the blade of the defogging fan 130 is also made of metal material, so that the heat generated by the annular heating wire 160 can be conducted to the entire surface of the blade, so as to increase the contact area with the airflow and improve the heating efficiency.

[0072] In at least one embodiment of the present application, the waterproof ventilation hole 120a is arranged at the end of the communication duct 120 away from the shell 110.

[0073] Please refer to Figures 1-4In the embodiment, the waterproof vent 120a is arranged at the end of the communication pipe 120 away from the shell 110, so that the hot air can be discharged through the waterproof vent 120a after defogging the monitoring glass 150, and the water outside can be prevented from directly entering the accommodation cavity 110a through the waterproof vent 120a, thereby protecting the elements inside the LNG ship safety monitoring device 100.

[0074] In at least one embodiment of the present application, the LNG ship safety monitoring device 100 further comprises:

[0075] The first driving motor 170 is arranged in the communication pipe 120, and an output shaft of the first driving motor 170 at least partially extends into the accommodation cavity 110a;

[0076] The mounting plate 180 is located in the accommodation cavity 110a and is fixedly connected with the output shaft of the first driving motor 170, and the monitor 140 is mounted on the mounting plate 180;

[0077] The first driving motor 170 is used to drive the mounting plate 180 and the monitor 140 to rotate together around the central axis of the output shaft of the first driving motor 170.

[0078] Please refer to Figures 1-4 In the embodiment, the first driving motor 170 drives the mounting plate 180 to rotate, so as to drive the monitor 140 to rotate by a certain angle, thereby adjusting the shooting angle of the monitor 140.

[0079] It should be further explained that the mounting plate 180 is fixedly connected with the shell 110 by screws, the shell 110 is slidingly connected with the communication pipe 120, the mounting plate 180 is plate-shaped, the shell 110 is provided with an annular sliding groove, and the end of the communication pipe 120 is provided with an annular sliding plate, so as to realize rotation and relative sliding through the annular sliding groove and the annular sliding plate.

[0080] The first driving motor 170 can be an electric motor.

[0081] In at least one embodiment of the present application, the LNG ship safety monitoring device 100 further comprises a second driving motor 190 arranged on the mounting plate 180, and an output shaft of the second driving motor 190 is fixedly connected with the monitor 140, so as to drive the monitor 140 to rotate around the central axis of the output shaft of the second driving motor 190.

[0082] Please refer to Figures 1-4 In the embodiment, the second driving motor 190 drives the monitor 140 to rotate, so as to enable the monitor 140 to deflect relative to the mounting plate 180, thereby adjusting the monitoring range of the monitor 140.

[0083] The second driving motor 190 can also be an electric motor.

[0084] In at least one embodiment of the present application, the first driving motor 170 is arranged perpendicularly to the arrangement direction of the second driving motor 190.

[0085] Please refer to Figures 1-4 In the present embodiment, the first driving motor 170 is arranged along the axis of the communication pipeline 120, so that when the first driving motor 170 rotates, the monitor 140 is driven to rotate along the circumference of the communication pipeline 120 to adjust the horizontal direction of the monitor 140, and the arrangement direction of the second driving motor 190 is perpendicular to that of the first driving motor 170, so that when the second driving motor 190 rotates, the monitor 140 is driven to rotate relative to the mounting plate 180 to adjust the pitch angle of the monitor 140.

[0086] In at least one embodiment of the present application, the LNG ship safety monitoring device 100 further comprises an infrared tracker 200 arranged on the mounting plate 180 and arranged opposite to the monitoring glass 150.

[0087] Please refer to Figures 1-4 In the present embodiment, the infrared tracker 200 arranged on the mounting plate 180 can monitor external pedestrians or abnormal heat sources, so that the angle of the monitor 140 is adjusted by the infrared tracker 200 to monitor the situation of the LNG ship in time.

[0088] The main component of LNG is methane, which will vaporize rapidly once it leaks. The infrared tracker 200 can quickly and accurately detect the presence and concentration change of methane and other hydrocarbon gases by using the absorption characteristics of different gases to infrared spectrum. If the LNG leaks and then catches fire, the infrared tracker 200 can detect the infrared spectrum emitted by the flame burning to discover the danger in time. In some embodiments, the infrared tracker 200 is an infrared probe, for example, it can be a S509-CH4 infrared gas sensor of Claira, UK, which is developed based on the Beer-Lambert law and infrared spectrum theory and can accurately detect methane.

[0089] In at least one embodiment of the present application, the LNG ship safety monitoring device 100 further comprises a circuit board 210 arranged on the mounting plate 180 and electrically connected to the infrared tracker 200, the first driving motor 170, the second driving motor 190, the annular heating wire 160, the defogging fan 130 and the monitor 140.

[0090] Please refer to Figures 1-5In the embodiment, the infrared tracker 200, the first driving motor 170, the second driving motor 190, the annular heating wire 160, the defogging fan 130 and the monitor 140 are controlled by the circuit board 210 to better monitor the situation on the LNG ship.

[0091] In at least one embodiment of the present application, the circuit board 210 comprises:

[0092] The signal transmission module 211 is configured to transmit a video signal.

[0093] The infrared tracking module 212 is configured to generate a tracking signal according to an infrared temperature.

[0094] The tracking driving module 213 is configured to drive the first driving motor 170 or the second driving motor 190 to rotate according to the tracking signal.

[0095] Please refer to ​ In the embodiment, the video image captured by the monitor 140 is transmitted by the signal transmission module 211, so that the controller can accurately and timely understand the situation on the LNG ship. The infrared tracking module 212 can track the heat source signal in the picture, so that the tracking driving module 213 can track the heat source signal, so as to ensure that the picture can accurately capture the heat source signal and avoid safety accidents.

[0096] The above is only an embodiment of the present application, and it should be pointed out that those skilled in the art can make improvements without departing from the creative concept of the present application, but these all belong to the protection scope of the present application.

Claims

1. A safety monitoring device for LNG ships, characterized in that, include: The shell has an internal cavity. A connecting pipe, one end of which is fixed to the hull plate of the LNG ship, and the other end of which is fixed to the shell and connected to the receiving cavity, wherein the connecting pipe has a waterproof ventilation hole that communicates with the receiving cavity; A defogging fan is disposed within the accommodating cavity; The monitor is located within the accommodating cavity; A monitoring glass is mounted on the housing. The monitor is located between the defogging fan and the monitoring glass, and the camera head of the monitor is directly opposite the monitoring glass. The defogging fan is used to blow the heat generated by the monitor toward the monitoring glass.

2. The LNG ship safety monitoring device according to claim 1, characterized in that, The LNG ship safety monitoring device also includes: A ring-shaped heating wire is installed on the monitoring glass near the monitor.

3. The LNG ship safety monitoring device according to claim 2, characterized in that, The annular heating wire is spirally wound around the surface of the monitoring glass, and the orthographic projection of the annular heating wire on the surface of the monitoring glass is located outside the orthographic projection of the camera head of the monitor on the surface of the monitoring glass.

4. The LNG ship safety monitoring device according to claim 2, characterized in that, The annular heating wire is disposed on the surface of the blades of the defogging fan to heat the airflow entering the defogging fan.

5. The LNG ship safety monitoring device according to claim 2, characterized in that, The LNG ship safety monitoring device also includes: A first drive motor is disposed within the communicating pipe, and the output shaft of the first drive motor extends at least partially into the accommodating cavity; A mounting plate is located inside the accommodating cavity and is fixedly connected to the output shaft of the first drive motor; the monitor is mounted on the mounting plate. The first drive motor is used to drive the mounting plate and the monitor to rotate horizontally together around the central axis of the output shaft of the first drive motor.

6. The LNG ship safety monitoring device according to claim 5, characterized in that, The LNG ship safety monitoring device also includes: A second drive motor is mounted on the mounting plate, and the output shaft of the second drive motor is fixedly connected to the monitor to drive the monitor to rotate around the central axis of the output shaft of the second drive motor.

7. The LNG ship safety monitoring device according to claim 6, characterized in that, The first drive motor and the second drive motor are set perpendicular to each other.

8. The LNG ship safety monitoring device according to claim 6, characterized in that, The LNG ship safety monitoring device also includes: An infrared tracker is mounted on the mounting plate and positioned directly opposite the monitoring glass.

9. The LNG ship safety monitoring device according to claim 8, characterized in that, The LNG ship safety monitoring device also includes: The circuit board is mounted on the mounting plate and is electrically connected to the infrared tracker, the first drive motor, the second drive motor, the annular heating wire, the defogging fan, and the monitor.

10. The LNG ship safety monitoring device according to claim 9, characterized in that, The circuit board includes: The signal transmission module is used to transmit video signals; The infrared tracking module generates a tracking signal based on infrared temperature. The tracking drive module drives the first drive motor or the second drive motor to rotate according to the tracking signal.

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