Power distribution box and explosion-proof power supply system

Abstract

The utility model discloses a power distribution box and an explosion-proof power supply system, and relates to the technical field of single point mooring. The power distribution box comprises a shell, a power supply module, a power distribution module and a switch module. A handle is arranged at the top in the shell in the first direction. The power supply module comprises a power connector, the power connector is used for being connected with an external power supply, and the power connector is arranged on one side of the shell in a protruding mode in the second direction. The power distribution module comprises a plurality of output sockets used for being connected with an external load, and the output sockets are located on the two sides of the shell in the third direction and arranged in the second direction; the switch module is located on the side, away from the power connector, of the shell in the second direction. By adopting the technology provided by the utility model, the portability of the power distribution box can be effectively improved, so that the power distribution box can cope with various emergencies.

Description

Technical Field

[0001] The utility model relates to the technical field of single point mooring, and particularly relates to a power distribution box and an explosion-proof power supply system. Background Art

[0002] A single point mooring system (SPM) is a maritime mooring technology mainly used for the loading and unloading operations of oil tankers in deep water areas, especially in areas without deep water ports. Therefore, explosion protection is one of the key factors for the safe operation of the single point mooring system.

[0003] At present, the main explosion protection measures adopted by the single point mooring system include using tools with explosion-proof functions, prohibiting open flames, and using non-explosion-proof electrical appliances. In particular, the power distribution equipment in the single point mooring system needs to use a distribution box with corresponding explosion-proof certification because electric sparks or high temperatures may be generated inside, such as the IEC 60079 and GB 3836 series standards. Among them, the explosion-proof distribution boxes currently used in the single point mooring system are mostly large cabinet types to integrate various control and monitoring systems. However, this large distribution box is heavy and large in volume, resulting in low flexibility and difficulty in coping with emergency scenarios. Summary of the Utility Model

[0004] The utility model provides a power distribution box and an explosion-proof power supply system to solve the problem in the prior art that the distribution box is too large, resulting in low flexibility and difficulty in applying to emergency scenarios.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is to provide a power distribution box and a power supply system. The power distribution box includes: a housing, a power supply module, a power distribution module, and a switch module.

[0006] A handle is provided at the top of the housing along a first direction; the power supply module includes a power connector for connecting to an external power supply, and the power connector protrudes from one side of the housing along a second direction.

[0007] The power distribution module includes a plurality of output sockets for connecting to external loads, and the output sockets are located on both sides of the housing along a third direction and are arranged in a row along the second direction; the switch module is located on the side of the housing away from the power connector along the second direction.

[0008] The beneficial effects brought by the technical solution provided by the utility model compared with the prior art are:

[0009] It is connected to an external power supply through the power interface of the power supply module, so that in the event of an emergency scenario (such as the need to quickly respond to changes in loading and unloading operations), it can be connected to an external load through multiple power connectors of the power supply module for power supply. Among them, a handle is provided on the top of the housing, which is convenient for the staff to transfer the power distribution box to a suitable space for use, and a plurality of output sockets are arranged on the side of the housing, further improving the space occupancy rate of the power distribution box and facilitating the user to plug in the external load.

[0010] In addition, compared with the current large-scale distribution box with a cabinet door and the switch module is arranged inside the cabinet door, the above-mentioned switch module is externally arranged on the housing, making the inside of the power distribution box form a whole. The staff can directly operate the switch from the outside, further improving its convenience on the basis of ensuring the various functions of the large-scale distribution box.

[0011] In some embodiments, the power distribution box further includes an overvoltage protection module, and the overvoltage protection module is connected to the power supply module, so that when the supply voltage of the external power supply is lower than the set voltage value, the power connector can be disconnected.

[0012] Adopting the above technical solution, since the explosion-proof battery may have battery short circuits, etc. under overvoltage, adding overvoltage protection and automatically tripping at low voltage can effectively prevent the battery from running out of power.

[0013] In some embodiments, the power supply module is also provided with a diode connected to the power connector, wherein the maximum forward current of the diode is greater than the supply current of the external power supply, and the maximum reverse voltage of the diode is greater than the highest voltage of the external power supply.

[0014] Adopting the above technical solution, a series diode is used to block the reverse flow of current, thereby avoiding the generation of circulating current.

[0015] In some embodiments, the output socket is also provided with a protective cover, and the protective cover can rotate clockwise or counterclockwise around the second direction to close or fasten the corresponding output socket. Further, a label sticker is provided on the outer surface of the protective cover.

[0016] Adopting the above technical solution, setting the protective cover can effectively prevent dust, moisture or other foreign objects from damaging the output socket or entering the inside of the distribution box.

[0017] In some embodiments, the switch module includes a plurality of switches arranged in an array along the third direction, wherein a protective cover is convexly provided on the switch, and the protective cover can rotate clockwise or counterclockwise around the second direction to close or fasten the plurality of switches.

[0018] With the above technical solution, due to the relatively harsh marine environment, when the switch module is externally installed, it is vulnerable to environmental factors and may cause the switch to fail. Therefore, a switch protective cover is added to protect the switch when it is not in operation.

[0019] In some embodiments, the present application also provides an explosion-proof power supply system, including the above power distribution box, explosion-proof battery, explosion-proof solar panel and overcharge protection device.

[0020] The explosion-proof battery is connected to the power interface of the power distribution box and serves as a power source; the explosion-proof solar panel is connected to the explosion-proof battery and is used to convert light energy into electrical energy; the overcharge protection device is connected to the explosion-proof battery, so that when the charging voltage of the explosion-proof battery is greater than the second set voltage, the connection between the explosion-proof battery and the explosion-proof solar panel is disconnected.

[0021] With the above technical solution, through the above explosion-proof power supply system, it can be quickly connected to the above explosion-proof box to provide power when charging is required in case of emergencies, and ensure the stable power supply of multiple external loads. Among them, explosion-proof solar panels and explosion-proof batteries are used to ensure the explosion-proof performance of the entire power supply system.

[0022] In addition, an overcharge protection device is also added to avoid thermal runaway caused by too high battery temperature during overcharging and extend the service life of the battery.

[0023] In some embodiments, the explosion-proof battery is embedded in the explosion-proof box, and an air filter is provided inside the explosion-proof box.

[0024] With the above technical solution, by embedding the explosion-proof battery in the explosion-proof box, its explosion-proof performance is improved. Among them, since hydrogen gas is generated during the charging and discharging process of the battery, an air filter is added to enable the internal of the explosion-proof box to exchange gas with the outside, so as to further improve the explosion-proof performance of the explosion-proof battery.

[0025] In some embodiments, the explosion-proof box further includes an upper cover plate and a lower cover plate, and the air filter is located between the upper cover plate and the lower cover plate along the first direction.

[0026] With the above technical solution, when the battery is charging and discharging, the internal temperature of the explosion-proof box will rise, causing hydrogen gas to move upward in the explosion-proof box due to its low density. The air filter is arranged between the upper cover plate and the lower cover plate, which is more convenient for discharging hydrogen gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments. Obviously, the attached drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these drawings, where:

[0028] Figure 1 is a schematic three-dimensional structure diagram of an embodiment of a power distribution box provided by the present utility model;

[0029] Figure 2 is a schematic connection structure block diagram of an embodiment of a power distribution box provided by the present utility model;

[0030] Figure 3 is a schematic connection block diagram of an embodiment of an explosion-proof power supply system provided by the present utility model;

[0031] Figure 4 is an internal structure diagram of an explosion-proof box of an embodiment of a power supply protection system provided by the present utility model;

[0032] Figure 5 is a schematic three-dimensional structure diagram of an explosion-proof box of an embodiment of a power supply protection system provided by the present utility model.

[0033] In the figure:

[0034] housing - 10; handle - 11; power supply module - 20; power connector - 21; power distribution module - 30; output socket - 31; protective cover - 32; switch module - 40; protective cover - 41;

[0035] overvoltage protection module - 50; explosion-proof battery - 60; explosion-proof solar panel - 70; overcharge protection device - 80; explosion-proof box - 90; air filter - 91; upper cover plate - 92; lower cover plate - 93. Specific embodiments

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0037] For the convenience of subsequent description, before describing the specific structure of the power distribution box, this application first combines Figure 1The first direction (Z), the second direction (X), and the third direction (Y) are defined. Among them, when the power distribution box is placed normally, the first direction is its height direction, such as the Z direction; the second direction is its length direction when the power distribution box is placed normally, such as the X direction; the third direction is its width direction when the power distribution box is placed normally, such as the Y direction. In this application, the first direction (Z), the second direction (X), and the third direction (Y) are perpendicular to each other.

[0038] It can be understood that the perpendicularity in this application is not absolute perpendicularity. The approximate perpendicularity caused by processing errors and assembly errors (for example, the included angle between two structural features is 89.9°) is also within the scope of the perpendicularity in this application.

[0039] See Figures 1 to 2 as shown in Figure 1 FIG. 10 shows a schematic perspective view of an embodiment of a power distribution box provided in this application; Figure 2 FIG. 12 shows a connection structure block diagram of an embodiment of a power distribution box provided in this application.

[0040] In some embodiments, the power distribution box includes: a housing 10, a power supply module 20, a power distribution module 30, and a switch module 40.

[0041] A handle 11 is provided at the top of the housing 10 along the first direction; the power supply module 20 includes a power connector 21, and the power connector 21 is used to connect to an external power supply. Among them, the power connector 21 protrudes from one side of the housing 10 along the second direction.

[0042] The power distribution module 30 includes a plurality of output sockets 31 for connecting to external loads. Among them, the output sockets 31 are located on both sides of the housing 10 along the third direction and are arranged along the second direction; the switch module 40 is located on the side of the housing 10 away from the power connector 21 along the second direction.

[0043] In the embodiment of this application, by connecting the power interface of the power supply module 20 to an external power supply, it is possible to connect to an external load through a plurality of power connectors 21 of the power supply module 20 for power supply in the event of an emergency scenario (for example, when it is necessary to quickly respond to changes in loading and unloading operations). Exemplarily, the external load can be a pressure sensor, a monitoring device, etc.

[0044] Among them, a handle is provided at the top of the housing 10, which is convenient for the staff to transfer the power distribution box to a suitable space for use. Combined with Figure 1 as shown in Figure 1 FIG. 31 shows one handle, but the number of handles in this application is not limited. For example, two handles can also be provided at intervals along the second direction.

[0045] Exemplarily, a plurality of output sockets 31 are arranged on the side surface of the housing 10. While improving the space occupancy rate of the power distribution box, it is convenient for users to plug in external loads. A protective cover 32 is provided on the outer cover of the output socket 31. Among them, the protective cover 32 can rotate clockwise or counterclockwise around the second direction to close or fasten the corresponding output socket 31. Thus, when the socket is in an idle state, it can effectively prevent dust, moisture or other foreign objects from damaging the output socket 31 or entering the interior of the distribution box. Further, an identification sticker is provided on the outer surface of the protective cover 32, which also facilitates the distinction between multiple different output sockets 31.

[0046] In addition, compared with the current large-scale distribution box with a cabinet door and the switch module 40 is arranged inside the cabinet door, the above-mentioned external arrangement of the switch module 40 on the housing 10 makes the inside of the power distribution box form a whole, and the staff can directly operate the switch from the outside, further improving its convenience.

[0047] Exemplarily, the switch module 40 includes a plurality of switches arranged in an array along the third direction (located inside the protective cover 41 and not shown in the figure). The protective cover 41 can rotate clockwise or counterclockwise around the second direction to close or fasten the plurality of switches. Among them, in order to facilitate the opening or closing of the protective cover 41, a lifting rod convenient for the staff to operate is also provided.

[0048] In some embodiments, the power distribution box further includes an overvoltage protection module 50. The overvoltage protection module 50 is connected to the power supply module 20, so that when the supply voltage of the external power supply is lower than the set voltage value, the power connector 21 can be disconnected.

[0049] In the embodiment of the present application, since the explosion-proof battery 60 may have battery short circuits or the like under overvoltage, overvoltage protection is added, and it automatically trips at low voltage, which can effectively prevent the battery from running out of power. Exemplarily, a relay or a switch can be set. When the voltage is too low, the power supply connection between the explosion-proof battery 60 and the power distribution box is disconnected.

[0050] In some embodiments, the power supply module 20 is also provided with a diode connected to the power connector 21. Among them, the maximum forward current of the diode is greater than the supply current of the external power supply, and the maximum reverse voltage of the diode is greater than the highest voltage of the external power supply.

[0051] In the embodiment of the present application, in the power distribution box or any DC circuit, a series diode can prevent reverse current caused by wiring errors or circuit failures to block the reverse flow of current, thereby avoiding the generation of circulating current.

[0052] See Figure 3 As shown, the present application also provides a connection block diagram of an embodiment of an explosion-proof power supply system.

[0053] In some embodiments, the present application also provides an explosion-proof power supply system, including the above-mentioned power distribution box, explosion-proof battery 60, explosion-proof solar panel 70, and overcharge protection device 80.

[0054] The explosion-proof battery 60 is connected to the power interface of the power distribution box and serves as a power source; the explosion-proof solar panel 70 is connected to the explosion-proof battery 60 and is used to convert light energy into electrical power; the overcharge protection device 80 is connected to the explosion-proof battery 60, such that when the charging voltage of the explosion-proof battery 60 is greater than the second set voltage, the connection between the explosion-proof battery 60 and the explosion-proof solar panel 70 is disconnected.

[0055] In the embodiments of the present application, through the above-mentioned explosion-proof power supply system, it is possible to quickly connect to the above-mentioned explosion-proof box 90 to provide power when charging is required in case of emergencies (such as when it is temporarily necessary to quickly respond to changes in loading and unloading operations), and to ensure stable power supply for multiple external loads. Among them, the explosion-proof solar panel 70 and the explosion-proof battery 60 are used to ensure the explosion-proof performance of the entire power supply system.

[0056] In addition, an overcharge protection device 80 is also provided to avoid the phenomenon of thermal runaway caused by too high battery temperature during overcharging and to extend the service life of the battery. Exemplarily, the temperature of the explosion-proof battery 60 is monitored in real time through a temperature sensor, such that when it exceeds the set temperature, the charging is disconnected.

[0057] See Figures 4 to 5 as shown Figure 4 shows the internal structure diagram of the explosion-proof box 90 of an embodiment of a power supply protection system provided by the present application; Figure 5 shows the three-dimensional structure schematic diagram of the explosion-proof box 90 of an embodiment of a power supply protection system provided by the present application.

[0058] In some embodiments, the explosion-proof battery 60 is embedded in the explosion-proof box 90, and an air filter 91 is provided inside the explosion-proof box.

[0059] In the embodiments of the present application, by embedding the explosion-proof battery 60 in the explosion-proof box 90, its explosion-proof performance is improved. Among them, since hydrogen gas is generated during the charging and discharging process of the battery, an air filter 91 is added to enable the internal part of the explosion-proof box 90 to exchange gas with the outside, so as to further improve the explosion-proof performance of the explosion-proof battery 60.

[0060] In some embodiments, the explosion-proof box 90 further includes an upper cover plate 92 and a lower cover plate 93, and the air filter 91 is located between the upper cover plate 92 and the lower cover plate 93 along the first direction.

[0061] In the embodiments of the present application, when the battery is charged and discharged, the temperature inside the explosion-proof box 90 will rise, causing hydrogen to move upward in the explosion-proof box 90 due to its low density. The air filter 91 is arranged between the upper cover plate 92 and the lower cover plate 93, which is more convenient for discharging hydrogen.

[0062] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall fall within the protection scope of the present utility model.

Claims

1. A power distribution box, characterized in that, Comprising: A housing, with a handle provided at the top of the housing along a first direction; A power supply module, the power supply module includes a power connector for connecting to an external power supply, wherein the power connector protrudes from one side of the housing along a second direction; A power distribution module, the power distribution module includes a plurality of output sockets for connecting to external loads, wherein the output sockets are located on both sides of the housing along a third direction and are arranged along the second direction; A switch module, the switch module is located on the side of the housing away from the power connector along the second direction.

2. The power distribution box according to claim 1, characterized in that, The power distribution box further includes an overvoltage protection module, the overvoltage protection module is connected to the power supply module, such that when the supply voltage of the external power supply is lower than a set voltage value, the power connector can disconnect.

3. The power distribution box according to claim 1, characterized in that, The power supply module is further provided with a diode connected to the power connector, wherein the maximum forward current of the diode is greater than the supply current of the external power supply, and the maximum reverse voltage of the diode is greater than the highest voltage of the external power supply.

4. The power distribution box according to claim 1, wherein The output socket is further provided with a protective cover, the protective cover can rotate clockwise or counterclockwise around the second direction to close or fasten the corresponding output socket.

5. The power distribution box according to claim 4, characterized in that, The outer surface of the protective cover is further provided with a label sticker.

6. The power distribution box according to claim 1, characterized in that The switch module includes a plurality of switches arranged in an array along the third direction, wherein a protective cover protrudes outside the switch, and the protective cover can rotate clockwise or counterclockwise around the second direction to close or fasten the plurality of switches.

7. An explosion-proof power supply system, characterized in that, Comprising the power distribution box according to any one of claims 1 to 6, further comprising: An explosion-proof battery, the explosion-proof battery is connected to the power interface of the power distribution box and serves as a power supply; An explosion-proof solar panel, the explosion-proof solar panel is connected to the explosion-proof battery and is used to convert light energy into electrical energy; An overcharge protection device, the overcharge protection device is connected to the explosion-proof battery, such that when the charging voltage of the explosion-proof battery is greater than a second set voltage, the connection between the explosion-proof battery and the explosion-proof solar panel can be disconnected.

8. The explosion-proof power supply system according to claim 7, characterized in that, The explosion-proof battery is embedded in an explosion-proof box, wherein an air filter is provided in the explosion-proof box.

9. The explosion-proof power supply system according to claim 8, wherein, The explosion-proof box further includes an upper cover plate and a lower cover plate, and the air filter is located between the upper cover plate and the lower cover plate along the first direction.

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