shore power box

Abstract

The application provides a shore power supply box, and relates to the technical field of ship power supply. The direct-current power supply circuit in the shore power supply box comprises a first direct-current loop provided with a first circuit breaker, a second direct-current loop provided with a second circuit breaker and an interlocking mechanism; the first direct-current loop and the second direct-current loop are connected with the same direct-current power supply, and the direct-current voltages output by the first direct-current loop and the second direct-current loop are different; the interlocking mechanism is connected with the first circuit breaker and the second circuit breaker respectively to interlock and control the on-off of the first direct-current loop and the second direct-current loop, and the on-off states of the first circuit breaker and the second circuit breaker are different at the same time. The embodiment of the application can realize direct-current power supply through the first direct-current loop and the second direct-current loop, effectively meet the direct-current power supply demand of the ship, and effectively avoid the mutual interference of the first direct-current loop and the second direct-current loop due to simultaneous work in the mode of alternating work of the first direct-current loop and the second direct-current loop controlled by the interlocking mechanism, so that the safety of charging is ensured.

Description

Technical Field

[0001] This application relates to the field of ship power supply technology, and more specifically, to a shore power box. Background Technology

[0002] A shore power box is a special power supply guarantee device for ships installed at port terminals. When ships are docked at the terminal or in dry dock for repairs, they generally use shore power. This is especially true for scheduled ships that dock at certain terminals. The terminals are equipped with shore power connection devices so that ships can use shore power as soon as they dock, and all the ship's generator sets can be shut down. This reduces the number of personnel on duty and allows for normal maintenance or repair of the generator sets.

[0003] In existing technologies, AC power supply circuits are often installed in shore power boxes to supply power to ship equipment. However, with the development of technology, ship equipment using DC power has also begun to emerge. The shore power box's AC power supply alone is insufficient to meet the DC power supply needs of ships, leading to the need to install AC / DC conversion equipment on the ship or find other equipment that can provide AC power, increasing the difficulty of power supply and making it difficult to effectively meet the ship's power supply needs. Utility Model Content

[0004] This application provides a shore power box that can solve the problem that existing shore power boxes cannot meet the DC power supply needs of ships.

[0005] To achieve this objective, the embodiments of this application provide the following solutions.

[0006] According to one aspect of the embodiments of this application, a shore power box is provided, including a DC power supply circuit for providing direct current, the DC power supply circuit including a first DC circuit provided with a first circuit breaker, a second DC circuit provided with a second circuit breaker, and an interlocking mechanism;

[0007] The first DC circuit and the second DC circuit are connected to the same DC power supply, and the DC voltages output by the first DC circuit and the second DC circuit are different;

[0008] The interlocking mechanism is connected to the first circuit breaker and the second circuit breaker respectively to interlock and control the opening and closing of the first DC circuit and the second DC circuit. The first circuit breaker and the second circuit breaker have different opening and closing states at the same time.

[0009] In one possible implementation, the system further includes a housing and a first power connector. The housing has a fixed bracket inside, the DC power supply circuit is fixed on the fixed bracket, and the first power connector is fixed on one side of the housing and connected to the output terminal of the first DC circuit and the output terminal of the second DC circuit.

[0010] In one possible implementation, it further includes an AC power supply circuit and a second power connector. The AC power supply circuit includes a first AC circuit and a second AC circuit. The first AC circuit and the second AC circuit are fixed on the fixed bracket. The second power connector is fixed on one side of the housing, and the first AC circuit and the second AC circuit are electrically connected to different second power connectors.

[0011] In one possible implementation, the enclosure includes a door, the first power connector and the second power connector are disposed on the same side of the enclosure, and both the first power connector and the second power connector are disposed below the door on one side of the enclosure.

[0012] In one possible implementation, it further includes a first detection circuit and a second detection circuit, wherein the first detection circuit is electrically connected to the first AC circuit and the second detection circuit is electrically connected to the second AC circuit;

[0013] Both the first detection circuit and the second detection circuit include a current transformer and a meter. The input terminal of the current transformer is electrically connected to the AC power supply circuit, and the output terminal is electrically connected to the meter.

[0014] In one possible implementation, a communication circuit is also included, which is disposed inside the enclosure and whose signal input terminal is communicatively connected to the electricity meter.

[0015] In one possible implementation, a closing indicator circuit is included, which is connected to the DC power supply circuit and the AC power supply circuit to indicate the status of the DC power supply circuit and the AC power supply circuit using the closing indicator light. The indicator lights corresponding to the DC power supply circuit and the AC power supply circuit are different.

[0016] In one possible implementation, a heat dissipation circuit is also included, which includes a heat dissipation exhaust fan and a heat dissipation switch. The first end of the heat dissipation switch is connected to the first AC circuit, and the second end is connected to the first end of the heat dissipation exhaust fan. The second end of the heat dissipation exhaust fan is connected to the first AC circuit.

[0017] In one possible implementation, there are two cooling exhaust fans, and louvers are provided on the opposite side of the housing, with the exhaust direction of the cooling exhaust fans opposite to the louvers.

[0018] In one possible implementation, a DC detection circuit with an ammeter and a DC detection circuit is further included, wherein the detection terminal of the DC detection circuit is electrically connected to the first DC circuit and the second DC circuit.

[0019] The beneficial effects of the technical solutions provided in this application are:

[0020] The shore power box provided in this application includes a DC power supply circuit for providing DC power. The DC power supply circuit includes a first DC circuit equipped with a first circuit breaker, a second DC circuit equipped with a second circuit breaker, and an interlocking mechanism. The first DC circuit and the second DC circuit are connected to the same DC power source, but the DC voltages output by the first and second DC circuits are different. The interlocking mechanism is connected to the first and second circuit breakers respectively to interlock and control the on / off states of the first and second DC circuits. The on / off states of the first and second circuit breakers are different at the same time. This embodiment of the application can achieve DC power supply through the first and second DC circuits, effectively meeting the DC power supply needs of ships. Furthermore, the interlocking mechanism effectively prevents mutual interference caused by simultaneous operation of the first and second DC circuits, ensuring charging safety. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below.

[0022] Figure 1 A front view of the shore power box provided in an embodiment of this application;

[0023] Figure 2 Rear view of the shore power box provided in an embodiment of this application;

[0024] Figure 3 A side view of the shore power box provided in an embodiment of this application;

[0025] Figure 4 A front view layout diagram of the shore power box provided in the embodiments of this application;

[0026] Figure 5 A rear view layout diagram of the shore power box provided in an embodiment of this application;

[0027] Figure 6 A side view of the shore power box provided in an embodiment of this application;

[0028] Figure 7 A circuit diagram of the first AC circuit provided in the embodiments of this application;

[0029] Figure 8 A circuit diagram of the second AC circuit provided in the embodiments of this application;

[0030] Figure 9 A circuit diagram of a DC power supply circuit provided in an embodiment of this application;

[0031] Figure 10 Circuit diagrams related to the electricity meter provided in the embodiments of this application;

[0032] Figure 11 A circuit diagram of a heat dissipation circuit provided in an embodiment of this application.

[0033] Labeling Explanation: 1. Enclosure; 11. Door Lock; 12. Close Indicator Light; 13. Enclosure Door; 14. Louver; 21. First Power Connector; 22. Second Power Connector; 3. Base; 41. Voltmeter / Ammeter; 42. Electricity Meter; 43. Third Circuit Breaker; 44. Street Light Control Button; 45. Running Indicator Light; 46. Current Transformer. Detailed Implementation

[0034] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0035] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the terms “comprising” and “including” as used in embodiments of this application mean that the corresponding feature can be implemented as the presented feature, information, data, step, operation, element, and / or component, but do not exclude implementation as other features, information, data, step, operation, element, component, and / or combinations thereof supported by the art. It should be understood that when we say that an element is “connected” or “coupled” to another element, the one element can be directly connected or coupled to the other element, or it can mean that the one element and the other element establish a connection relationship through an intermediate element. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein indicates at least one of the items defined by the term; for example, “A and / or B” indicates implementation as “A,” or implementation as “A,” or implementation as “A and B.”

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0037] The technical solutions of this utility model and their effects are described below through several exemplary embodiments. It should be noted that the following embodiments can be referenced, borrowed from, or combined with each other. Identical terms, similar features, and similar implementation steps in different embodiments will not be repeated.

[0038] The shore power box provided in this application is intended to solve at least one technical problem existing in the prior art.

[0039] This application provides a shore power box, such as... Figures 1-11 As shown, it includes a DC power supply circuit for providing DC power. The DC power supply circuit includes a first DC circuit equipped with a first circuit breaker, a second DC circuit equipped with a second circuit breaker, and an interlocking mechanism. The first DC circuit and the second DC circuit are connected to the same DC power source, and the DC voltages output by the first DC circuit and the second DC circuit are different. The interlocking mechanism is connected to the first circuit breaker and the second circuit breaker respectively to interlock and control the on / off state of the first DC circuit and the second DC circuit. The on / off state of the first circuit breaker and the second circuit breaker are different at the same time.

[0040] Optionally, the interlocking mechanism can be a mechanical interlocking device (such as connected to the first circuit breaker and the second circuit breaker, so that the operation of one circuit breaker drives the operation of the other circuit breaker), or an electrical interlocking device (such as detecting the operating status of the first circuit breaker and the second circuit breaker, and controlling the operating status of the other circuit breaker to change synchronously when the operating status of one circuit breaker changes).

[0041] In one embodiment, the interlocking mechanism can be a mechanical interlocking device, one end of which can be connected to the control switch of the first circuit breaker and the other end to the control switch of the second circuit breaker. Specifically, the mechanical interlocking device can be connected to the knob of the circuit breaker. When the user controls the corresponding circuit breaker to close or open via one of the knobs, the mechanical transmission mechanism correspondingly controls the circuit breaker corresponding to the other knob to open or close, thereby ensuring that when DC power is supplied, only the circuit providing the corresponding voltage is conducting in the DC power supply circuit, avoiding the situation where circuits providing other voltages are also conducting, thus providing safety for the DC power supply circuit during the charging process.

[0042] Optionally, the first DC circuit can output 250V, 400A DC power, and the second DC circuit can output 500V, 250A DC power. First circuit breaker ( Figure 9 The model number marked 3QF can be XT5S400, the second circuit breaker ( Figure 9 The model number (marked as 4QF) can be XT4N250. Resistors can also be included in the first and second DC circuits. By setting different sizes of resistors in the first and second DC circuits, the appropriate amount of DC current can be input to each circuit. Shunts can also be installed in the first and second DC circuits (model number FL-29-600A for the first DC circuit and FL-29-300A for the second DC circuit), and the ammeter detects the current in the first and second DC circuits through these shunts.

[0043] Optionally, the shore power box also includes a box body 1 and a first power connector 21. The box body 1 is provided with a fixed bracket, and the DC power supply circuit is fixed on the fixed bracket. The first power connector 21 is fixed on one side of the box body 1 and connected to the output terminal of the first DC circuit and the output terminal of the second DC circuit.

[0044] Optionally, there can be multiple first power connectors 21. The output terminal of the first DC circuit is connected to two first power connectors 21, and the output terminal of the second DC circuit is connected to one first power connector 21. Furthermore, to prevent leakage and protect the user, in the first DC circuit, both the positive and negative input terminals of the first power connector 21 are connected to the switch of the first circuit breaker, and the first circuit breaker controls the on / off state of the positive and negative input terminals. In the second DC circuit, both the positive and negative input terminals of the first power connector 21 are connected to the switch of the second circuit breaker, and the second circuit breaker controls the on / off state of the positive and negative input terminals.

[0045] In one embodiment, the first power connector 21 connected to the first DC circuit can be of model number JG536-D400J(2+1)Z, and the first power connector 21 connected to the second DC circuit can be of model number YGC635-S3R-300T.

[0046] Optionally, the shore power box may also include a base 3, which is located at the bottom of the box body 1 and supports the box body 1. The base 3 and the box body 1 may be connected by bolts.

[0047] In one embodiment, the base 3 can be made of channel steel, the base 3 is fixed to the base 3, and the box 1 is fixed to the side of the base 3 away from the ground. In order to enhance the anti-interference ability of the shore power box, the protection level of the shore power box can be greater than or equal to IP54.

[0048] Optionally, to protect the shore power box, when the voltage of the first DC circuit is 500V, the shore power box can control the first circuit breaker in the first DC circuit to remain open to prevent the user from closing the circuit and damaging the first DC circuit or the shore power box. When the voltage of the second DC circuit is 250V, the shore power box controls the second circuit breaker in the second DC circuit to remain open.

[0049] Optionally, the shore power box also includes an AC power supply circuit and a second power connector 22. The AC power supply circuit includes a first AC circuit and a second AC circuit. The first AC circuit and the second AC circuit are fixed on a fixed bracket. The second power connector 22 is fixed on one side of the box body 1, and the first AC circuit and the second AC circuit are electrically connected to different second power connectors 22.

[0050] Optionally, the AC power supply circuit and the DC power supply circuit can be connected to an external power supply device to obtain electrical energy. This external power supply device can be a power distribution room or other equipment capable of supplying power to the shore power box.

[0051] Optionally, the first AC circuit and the second AC circuit can be connected to different second power connectors 22. The first AC circuit and the second AC circuit can also supply power to other devices in other shore power boxes, and multiple circuit breakers (such as C63A / 4P, C32A / 2P, NXC-32) are installed in the first AC circuit and the second AC circuit, each circuit breaker corresponding to control the on / off state of a branch of the AC power supply circuit or a corresponding output terminal.

[0052] In one embodiment, such as Figure 7 , Figure 8 As shown, the AC voltage outputs of the first and second AC circuits can be the same; specifically, the AC voltage can be 380V and 250A. The output circuit or branch where the first and second AC circuits are connected to the second power connector 22 can be equipped with a third circuit breaker 43 (labeled as 1QF or 2QF in the figure). The model of the third circuit breaker 43 can be XT3N250. The model of the second power connector 22 can be JG16-3Z.

[0053] Optionally, the enclosure 1 includes a door 13, and a first power connector 21 and a second power connector 22 are disposed on the same side of the enclosure 1, and both the first power connector 21 and the second power connector 22 are disposed below the door 13 on one side of the enclosure 1.

[0054] Optionally, both sides of the enclosure 1 may be provided with doors 13 for easy maintenance. The first power connector 21 and the second power connector 22 are located on the front of the enclosure 1, below the doors 13. The first power connector 21 and the second power connector 22 may be arranged side by side.

[0055] Optionally, a door lock 11 can also be installed on the door 13 to lock the door 13. The door lock 11 can be a triangular lock. Multiple doors 13 can be installed on the front of the door 13, allowing for inspection and maintenance of different areas by opening different doors 13.

[0056] Optionally, it also includes a first detection circuit and a second detection circuit. The first detection circuit is electrically connected to the first AC circuit, and the second detection circuit is electrically connected to the second AC circuit. Both the first detection circuit and the second detection circuit include a current transformer 46 and a meter 42. The input terminal of the current transformer 46 is electrically connected to the AC power supply circuit, and the output terminal is electrically connected to the meter 42.

[0057] Optionally, the current transformer 46 can be used to detect the current output from the first AC circuit and the second AC circuit to the second power connector 22, and the meter 42 can be an active energy meter to detect the electrical energy output from the first AC circuit and the second AC circuit.

[0058] In one embodiment, the current transformer 46 may be of model BH-0.66 and the meter 42 may be of model DTSD43 1.5(6).

[0059] Optionally, the shore power box also includes a communication circuit, which is installed inside the box 1, and the signal input terminal of the communication circuit is connected to the meter 42.

[0060] In one embodiment, the communication circuit can transmit data via wired transmission. Specifically, the communication circuit may be equipped with a communication interface through which data is transmitted to the electricity meter 42 or the device data of the electricity meter 42 is transmitted to the control terminal or control platform. This communication interface may be an RS485 interface, an RS232 interface, or other types of interfaces.

[0061] Optionally, the shore power box includes a closing indicator circuit with a closing indicator light 12. The closing indicator circuit is connected to the DC power supply circuit and the AC power supply circuit to indicate the status of the DC power supply circuit and the AC power supply circuit using the closing indicator light 12. The indicator lights corresponding to the DC power supply circuit and the AC power supply circuit are different.

[0062] Optionally, the closing indicator light 12 can be installed on the door 13 on the front of the enclosure 1, wherein each circuit in the DC power supply circuit and the AC power supply circuit can be equipped with a corresponding closing indicator circuit.

[0063] Optionally, the closing circuit can be connected to the control circuit of the circuit breaker in the AC or DC power supply circuit. The closing circuit is equipped with a control switch. When the control switch is closed, the circuit containing the closing indicator light 12 is turned on, and this circuit sends a closing signal to the control circuit, which then controls the circuit breaker to close. The closing circuit can also be equipped with a tripping coil, which can be used to control the circuit breaker corresponding to the closing circuit to open.

[0064] Optionally, the closing circuit may also include a fourth circuit breaker for controlling the opening and closing of the closing circuit. When the fourth circuit breaker is closed, the closing circuit is energized, and the operating status of the corresponding circuit can be indicated by the closing indicator light 12.

[0065] Optionally, the shore power box may also include a heat dissipation circuit, which includes a heat dissipation exhaust fan and a heat dissipation switch. The first end of the heat dissipation switch is connected to the first AC circuit, and the second end is connected to the first end of the heat dissipation exhaust fan. The second end of the heat dissipation exhaust fan is connected to the first AC circuit.

[0066] Optionally, the number of cooling exhaust fans is two ( Figure 11 The boxes are labeled FAN1 and FAN2. The opposite side of the box 1 is provided with louvers 14, and the exhaust direction of the heat dissipation exhaust fan is opposite to the louvers 14.

[0067] In one embodiment, such as Figure 11 As shown, the heat dissipation circuit may also include a fuse and a heat dissipation switch, with the fuse and heat dissipation switch connected in series. The heat dissipation switch controls the on / off state of the heat dissipation circuit.

[0068] Optionally, it also includes a DC detection circuit equipped with an ammeter and a voltmeter, the detection terminal of which is electrically connected to the first DC circuit and the second DC circuit. The ammeter (model 6C2-A) can be connected in series in the DC power supply circuit, and the voltmeter (model 6C2-A) can be connected in parallel in the DC power supply circuit.

[0069] Optionally, the ammeter and voltmeter can be integrated into a voltage and current meter 41, which can be fixed on the upper part of the fixed bracket, and the front of the voltage and current meter 41 faces the cabinet door on the front of the enclosure 1 so that the voltage and current information can be quickly viewed after the cabinet door is opened.

[0070] Optionally, the shore power box may include a street light installed on one side of the box 1, and the first AC circuit may be connected to the street light and supply it with power. A street light control button 44 and an indicator light 45 may be installed on the back of the box 1. The street light control button 44 controls the street light to turn on and off, and the indicator light 45 indicates the working status of the street light.

[0071] The shore power box provided in this application includes a DC power supply circuit for providing DC power. The DC power supply circuit includes a first DC circuit equipped with a first circuit breaker, a second DC circuit equipped with a second circuit breaker, and an interlocking mechanism. The first DC circuit and the second DC circuit are connected to the same DC power source, but the DC voltages output by the first and second DC circuits are different. The interlocking mechanism is connected to the first circuit breaker and the second circuit breaker respectively to interlock and control the on / off state of the first and second DC circuits. The on / off states of the first and second circuit breakers are different at the same time. This application embodiment can achieve DC power supply through the first and second DC circuits, effectively meeting the DC power supply needs of ships. Furthermore, the interlocking mechanism effectively avoids mutual interference caused by simultaneous operation of the first and second DC circuits, ensuring charging safety.

[0072] The terms "first," "second," "third," "fourth," "1," "2," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in a sequence other than that shown in the illustrations or text descriptions.

[0073] It should be understood that although arrows indicate various operation steps in the flowcharts of this application's embodiments, the order in which these steps are implemented is not limited to the order indicated by the arrows. Unless explicitly stated herein, in some implementation scenarios of this application's embodiments, the implementation steps in each flowchart can be executed in other orders as required. Furthermore, some or all steps in each flowchart, based on the actual implementation scenario, may include multiple sub-steps or multiple stages. Some or all of these sub-steps or stages can be executed at the same time, and each sub-step or stage can also be executed at different times. In scenarios where execution times differ, the execution order of these sub-steps or stages can be flexibly configured according to requirements, and this application's embodiments do not limit this.

[0074] The above description is only an optional implementation method for some implementation scenarios of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application without departing from the technical concept of this application also fall within the protection scope of the embodiments of this application.

Claims

1. A shore power box, characterized in that, It includes a DC power supply circuit for providing direct current, the DC power supply circuit including a first DC circuit equipped with a first circuit breaker, a second DC circuit equipped with a second circuit breaker, and an interlocking mechanism; The first DC circuit and the second DC circuit are connected to the same DC power supply, and the DC voltages output by the first DC circuit and the second DC circuit are different; The interlocking mechanism is connected to the first circuit breaker and the second circuit breaker respectively to interlock and control the opening and closing of the first DC circuit and the second DC circuit. The opening and closing states of the first circuit breaker and the second circuit breaker are different at the same time.

2. The shore power box of claim 1, wherein, It also includes a housing and a first power connector. The housing has a fixed bracket inside, the DC power supply circuit is fixed on the fixed bracket, and the first power connector is fixed on one side of the housing and connected to the output terminal of the first DC circuit and the output terminal of the second DC circuit.

3. The shore power box of claim 2, wherein, It also includes an AC power supply circuit and a second power connector. The AC power supply circuit includes a first AC circuit and a second AC circuit. The first AC circuit and the second AC circuit are fixed on the fixed bracket. The second power connector is fixed on one side of the housing, and the first AC circuit and the second AC circuit are electrically connected to different second power connectors.

4. The shore power box of claim 3, wherein, The enclosure includes a door, and the first power connector and the second power connector are located on the same side of the enclosure, with both the first power connector and the second power connector located below the door on one side of the enclosure.

5. The shore power box of claim 3, wherein, It also includes a first detection circuit and a second detection circuit, wherein the first detection circuit is electrically connected to the first AC circuit and the second detection circuit is electrically connected to the second AC circuit; Both the first detection circuit and the second detection circuit include a current transformer and a meter. The input terminal of the current transformer is electrically connected to the AC power supply circuit, and the output terminal is electrically connected to the meter.

6. The shore power box of claim 5, wherein, It also includes a communication circuit, which is disposed inside the enclosure and whose signal input terminal is connected to the electricity meter.

7. The shore power box of claim 3, wherein, It includes a closing indicator circuit with a closing indicator light. The closing indicator circuit is connected to the DC power supply circuit and the AC power supply circuit to indicate the status of the DC power supply circuit and the AC power supply circuit using the closing indicator light. The indicator lights corresponding to the DC power supply circuit and the AC power supply circuit are different.

8. The shore power box of claim 3, wherein, It also includes a heat dissipation circuit, which includes a heat dissipation exhaust fan and a heat dissipation switch. The first end of the heat dissipation switch is connected to the first AC circuit, and the second end is connected to the first end of the heat dissipation exhaust fan. The second end of the heat dissipation exhaust fan is connected to the first AC circuit.

9. The shore power box of claim 8, wherein, The number of cooling exhaust fans is two, and louvers are provided on the opposite side of the housing. The exhaust direction of the cooling exhaust fans is opposite to that of the louvers.

10. The shore power box of claim 1, wherein, It also includes a DC detection circuit equipped with a voltmeter and an ammeter, wherein the detection terminal of the DC detection circuit is electrically connected to the first DC circuit and the second DC circuit.

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