Civil airport navigation station distribution box capable of being quickly connected into mobile generator

Abstract

The utility model belongs to the technical field of power distribution boxes, and discloses a civil airport navigation station power distribution box capable of being quickly connected into a mobile generator, which comprises a box body, a back plate of the box body is provided with an incoming line circuit breaker unit, an interlocking protection unit and an outgoing line circuit breaker unit, the incoming line circuit breaker unit comprises three units, and the interlocking protection unit comprises a change-over switch and an interlocking device; the first incoming line circuit breaker is connected with the mobile generator through the quick access device and is output to the interlocking device; the second circuit breaker and the third circuit breaker are connected with commercial power and output to the change-over switch, the change-over switch and the interlocking device are then connected to the outgoing line circuit breaker, finally power is supplied to equipment, flexible switching and safety guarantee of the power supply are ensured through the overall design, and efficient power supply management is achieved. According to the technical scheme provided by the utility model, the disassembly and recovery work of a distribution box line during power supply switching is reduced without additionally arranging a distribution box, and the safety and economical efficiency of power supply of a special-grade electrical load are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of distribution boxes, and particularly relates to a distribution box for a civil airport navigation station that can be quickly connected to a mobile generator. Background Technique

[0002] The navigation equipment of civil airports is crucial for the safe operation of airports. Its load classification is special-class power load. When both of the two ordinary mains power supplies that supply power to it lose power, it is necessary to connect a diesel (gasoline) generator to supply power to the navigation equipment.

[0003] At present, the distribution boxes on the market cannot be quickly connected to mobile diesel (gasoline) generators. When the ordinary mains power fails, experienced engineers are required to quickly remove the original distribution box lines and then connect the mobile generator lines. Since the backup battery power supply time of the navigation equipment is limited, the time for engineers to connect the mobile generator is short and the pressure is high, which is prone to operation errors, thus affecting the normal operation of the navigation equipment and even the normal operation of civil airports. When the ordinary mains power supply resumes normal power supply, engineers need to remove the lines of the mobile generator and then restore the original distribution box lines. Such repeated operations have a greater impact on the power supply lines and are prone to leaving potential safety hazards.

[0004] To solve the above problems, some airports additionally install one more distribution box for power switching, reducing the removal and restoration work of the distribution box lines during power switching. However, installing an additional distribution box not only increases the equipment investment but also increases the work difficulty of the operation and maintenance personnel. Once the additional distribution box fails, it will affect the normal power supply of the navigation equipment. Content of the Utility Model

[0005] The purpose of the utility model is to provide a distribution box for a civil airport navigation station that can be quickly connected to a mobile generator to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the utility model provides a distribution box for a civil airport navigation station that can be quickly connected to a mobile generator, including a box body. One side of the box body is rotatably connected with a box door. On the back plate inside the box body, an incoming line breaker unit, an interlock protection unit, and an outgoing line breaker unit are sequentially installed from top to bottom; the incoming line breaker unit includes a first incoming line breaker, a second incoming line breaker, and a third incoming line breaker; the interlock protection unit includes an automatic transfer switch and an electrical interlock device; the outgoing line breaker unit includes an outgoing line breaker. The input end of the first incoming line breaker is electrically connected to the mobile generator, and the output end of the first incoming line breaker is electrically connected to the electrical interlock device; the input ends of the second incoming line breaker and the third incoming line breaker are both connected with ordinary mains cables, and the output ends of the second incoming line breaker and the third incoming line breaker are both electrically connected to the automatic transfer switch. The output ends of the automatic transfer switch and the electrical interlock device are both electrically connected to the input end of the outgoing line breaker, and the output end of the outgoing line breaker is connected to the electrical equipment through a cable.

[0007] Optionally, the first incoming line breaker, the second incoming line breaker, the third incoming line breaker, the automatic transfer switch, the electrical interlock device, and the outgoing line breaker are all fixed on the back plate inside the box body through breaker rails.

[0008] Optionally, a quick access device is arranged between the input end of the first incoming line breaker and the mobile generator. The quick access device is installed on the side plate of the box body and includes a male connector and a female connector that are cooperatively arranged. The male connector is connected to the mobile generator through a cable, and the female connector is connected to the first incoming line breaker through a cable.

[0009] Optionally, through holes are opened on both the top plate and the bottom plate of the box body for incoming or outgoing lines.

[0010] Optionally, a wiring terminal is further included inside the box body, and the wiring terminal is installed on one side of the outgoing line breaker.

[0011] Optionally, the wiring terminal includes a neutral line terminal and a protective earthing terminal; the neutral line terminal is connected to the back plate inside the box body through an insulating pad and is electrically connected to the neutral line of the box body; the protective earthing terminal is welded on the back plate inside the box body and is electrically connected to the ground wire of the box body.

[0012] Optionally, a lightning arrester and a lightning arrester backup protection device are installed on one side of the outgoing line breaker away from the wiring terminal.

[0013] Optionally, a box lock and an intelligent meter are installed on the box door.

[0014] The technical effect of the utility model is:

[0015] The utility model can safely and simply connect a mobile generator and a distribution box, reducing the operation pressure of engineers and improving the reliability of power supply for special-grade power consumption loads. The automatic transfer switch and the electrical interlock device are used to realize the automatic switching between two ordinary mains power supplies and one mobile generator power supply for special-grade power consumption loads. Without additionally installing a distribution box, the removal and restoration work of the distribution box lines during power supply switching are reduced, improving the safety and economy of power supply for special-grade power consumption loads. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0018] Figure 1 is the front view in the embodiment of the present utility model;

[0019] Figure 2 is the left view in the embodiment of the present utility model;

[0020] Figure 3 is the internal structure schematic diagram in the embodiment of the present utility model;

[0021] Figure 4 is the partial enlarged view of the female joint of the quick access device in the embodiment of the present utility model;

[0022] Figure 5 is the partial enlarged view of the male joint of the quick access device in the embodiment of the present utility model;

[0023] Reference numerals: 1, box body; 2, intelligent instrument; 3, box lock; 4, female joint of the quick access device; 5, male joint of the quick access device; 6, first incoming line circuit breaker; 7, second incoming line circuit breaker; 8, third incoming line circuit breaker; 9, automatic transfer switch; 10, electrical interlock device; 11, arrester backup protection device; 12, arrester; 13, outgoing line circuit breaker; 14, N busbar; 15, PE busbar; 16, circuit breaker guide rail; 17, incoming line cable hole; 18, outgoing line cable hole. Detailed Embodiments

[0024] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0025] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as "fixedly provided on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration;

[0027] Regarding the terms "comprising", "including", "having", "containing", etc. used herein, they are all open-ended terms, that is, they are intended to include but not limited to.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the drawings and in combination with the embodiments.

[0030] Embodiment 1

[0031] As Figures 1 - 5As shown in the figure, in this embodiment, a distribution box for a civil airport navigation aid that can be quickly connected to a mobile generator is provided, including a box body 1. One side of the box body 1 is rotatably connected with a box door. On the back plate inside the box body 1, an incoming line circuit breaker unit, an interlock protection unit, and an outgoing line circuit breaker unit are sequentially installed from top to bottom; the incoming line circuit breaker unit includes a first incoming line circuit breaker 6, a second incoming line circuit breaker 7, and a third incoming line circuit breaker 8; the interlock protection unit includes an automatic transfer switch 9 and an electrical interlock device 10; the outgoing line circuit breaker unit includes an outgoing line circuit breaker. The input end of the first incoming line circuit breaker 6 is electrically connected to the mobile generator, and the output end of the first incoming line circuit breaker 6 is electrically connected to the electrical interlock device 10; the input ends of the second incoming line circuit breaker 7 and the third incoming line circuit breaker 8 are both connected with ordinary mains cables, and the output ends of the second incoming line circuit breaker 7 and the third incoming line circuit breaker 8 are both electrically connected to the automatic transfer switch 9. The output ends of the automatic transfer switch 9 and the electrical interlock device 10 are both electrically connected to the input end of the outgoing line circuit breaker, and the output end of the outgoing line circuit breaker is connected to the electrical equipment through a cable.

[0032] The intelligent meter 2 and the box lock 3 are installed on the door panel of the box body 1, the quick access device is installed on the side plate of the box body 1, the N row 14, the PE row 15, and the circuit breaker guide rail 16 are installed on the back plate of the box body 1. The incoming line circuit breaker, the automatic transfer switch 9, the electrical interlock device 10, the lightning arrester 12 and its backup protection device, and the outgoing line circuit breaker 13 are fixed on the box body 1 through the guide rail. The incoming and outgoing line cable holes 18 are opened on the upper or lower plate of the box body 1. In this embodiment, through the quick access device, engineers can quickly, safely, and simply connect the mobile generator and the distribution box in case of emergency. Through the automatic transfer switch 9 and the electrical interlock device 10, the automatic switching between two ordinary mains power supplies and one mobile generator power supply for special-grade electrical loads is realized. Without additionally installing a distribution box, the removal and restoration work of the distribution box lines during power supply switching are reduced, and the safety, reliability, and economy of the power supply for special-grade electrical loads are improved.

[0033] As Figures 1 - 5 shown, the intelligent meter 2 and the box lock 3 are installed on the door panel of the box body 1. Intelligent meters 2 are rarely set in general distribution boxes. The intelligent meter 2 in this embodiment can provide electrical data such as voltage, current, power factor, and cable temperature of the equipment in the distribution box, providing basic data for the subsequent electrical digital management of special-grade electrical loads. The box lock 3 is an automatic pop-up box lock opened with a physical key, which is convenient for engineers to quickly open the box door.

[0034] The intelligent meter 2 consists of a main unit and a sensor. The main unit is installed on the box body, used for analyzing, recording, and displaying the information collected by the sensor, and alarming when there are problems with the power quality; the sensor is installed inside the box body, used for collecting the quality signals of the 3-way incoming line power supply and the outgoing line power supply of the circuit breaker, such as voltage, current, amplitude, frequency, etc. The sensing adopts non-contact measurement technology and is not connected to other devices.

[0035] As Figure 1 and Figure 2 shown, the quick access device includes a quick access device female connector 4 and a quick access device male connector 5. The detailed structure of the quick access device female connector 4 is as Figure 4 shown, and the detailed structure of the quick access device male connector 5 is as Figure 5 shown. The quick access device female connector 4 is installed on the side plate of the box body 1, and the quick access device male connector 5 is plugged into the quick access device female connector 4 through an optimized structural design. The quick access device female connector 4 and the quick access device male connector 5 adopt standard plugs that meet national (international) standards.

[0036] Furthermore, the quick access device adopts a TN-S system. As Figure 3 shown, the quick access device male connector 5 is connected to the mobile generator through a cable, and the quick access device female connector 4 is connected to the first incoming line circuit breaker 6 through a cable. The selected cable model is determined by the size of the electrical load.

[0037] The first incoming line circuit breaker 6, the second incoming line circuit breaker 7, the third incoming line circuit breaker 8, the automatic transfer switch 9, the electrical interlock device 10, the arrester backup protection device 11, the arrester 12, the outgoing line circuit breaker 13, the N busbar 14, the PE busbar 15, the circuit breaker guide rail 16, etc. are all installed inside the box body 1. Therefore, the box body 1 needs to be customized designed to accommodate all the power distribution equipment. Obviously, the internal layout scheme of the distribution box in this embodiment is only one embodiment of this embodiment, rather than all the embodiments. The internal layout scheme of the distribution box should be customized designed in combination with the usage requirements.

[0038] Furthermore, the circuit breaker guide rail 16 is installed on the back panel inside the box body 1, and the first incoming line circuit breaker 6, the second incoming line circuit breaker 7, the third incoming line circuit breaker 8, the automatic transfer switch 9, the electrical interlock device 10, the arrester backup protection device 11, the arrester 12, the outgoing line circuit breaker 13 are fixed inside the box body 1 through the circuit breaker guide rail 16.

[0039] The first ordinary mains cable for the special-grade electrical load enters the box body 1 from the incoming cable hole 17 and then is connected to the second incoming line circuit breaker 7; the second ordinary mains cable for the special-grade electrical load enters the box body 1 from the incoming cable hole 17 and then is connected to the third incoming line circuit breaker 8. The selected cable model is determined by the size of the electrical load.

[0040] The output cables of the second incoming line circuit breaker 7 and the third incoming line circuit breaker 8 are connected to the automatic transfer switch 9, and the output cable of the automatic transfer switch 9 is connected to the outgoing line circuit breaker 13, and the outgoing line circuit breaker 13 supplies power to the downstream electrical equipment.

[0041] The output cable of the first incoming line circuit breaker 6 is connected to the electrical interlock device 10, and the output cable of the electrical interlock device 10 is connected to the outgoing line circuit breaker 13, and the outgoing line circuit breaker 13 supplies power to the downstream electrical equipment.

[0042] Furthermore, the electrical interlock device can achieve the electrical interlock between the output power supply of the first incoming line circuit breaker 6 and the output power supply of the automatic transfer switch 9, avoiding the two-way power supply to the outgoing line circuit breaker 13 simultaneously.

[0043] Furthermore, the output cable of the outgoing line circuit breaker 13 leaves the box body 1 through the outgoing line cable hole 18.

[0044] The arrester backup protection device 11 and the arrester 12 are installed on the circuit breaker guide rail inside the box body.

[0045] Furthermore, the models of the arrester 12 and the arrester backup protection device 11 are determined according to the usage requirements of the distribution box, and the two should cooperate effectively to provide reliable lightning protection for the distribution box and the electrical equipment. The outgoing line circuit breaker installed on one side of the arrester 12 and the arrester backup protection device 11 determines the model and connection method, etc. according to the usage requirements of the distribution box.

[0046] The N busbar 14 is installed inside the box body 1 and is connected to the box body 1 through an insulating pad.

[0047] Furthermore, the N wire inside the distribution box is reliably connected to the N busbar 14 through a cable.

[0048] The PE busbar 15 is installed inside the box body 1 and is reliably welded to the box body to provide reliable grounding for the distribution box and the electrical equipment.

[0049] Furthermore, the PE wire inside the distribution box is reliably connected to the PE busbar 15 through a cable.

[0050] The working mode of the electrical system inside the distribution box in the embodiment is as follows, meeting the requirements that the special-class electrical load is supplied by two ordinary commercial power supplies and one mobile generator power supply:

[0051] ① When both of the two ordinary commercial power supplies are normal, the automatic transfer switch 9 outputs the main commercial power supply, and the downstream electrical equipment is supplied by the main commercial power supply.

[0052] ② When one of the ordinary commercial power supplies loses power, the automatic transfer switch 9 outputs the other commercial power supply, and the downstream electrical equipment is supplied by the other commercial power supply.

[0053] ③ When both of the two ordinary mains power supplies lose power, the engineer quickly inserts the male connector 5 of the quick access device into the female connector 4 of the quick access device, and then starts the mobile generator. The downstream electrical equipment is powered by the mobile generator.

[0054] ④ When the ordinary mains power supply returns to normal, the electrical interlock device 10 automatically (manually) cuts off the output power of the incoming line circuit breaker 6 and automatically (manually) inputs the output power of the automatic transfer switch 9. The system resumes working mode ① or ②.

[0055] In this embodiment, the quick access device enables the engineer to quickly, safely and simply connect the mobile generator and the distribution box in an emergency, reducing the operation pressure on the engineer and improving the reliability of the power supply for the special-class electrical load. The automatic transfer switch and the electrical interlock device realize the automatic switching between the two ordinary mains power supplies and the one mobile generator power supply for the special-class electrical load, reducing the removal and restoration work of the distribution box lines during power supply switching without adding an additional distribution box, and improving the safety and economy of the power supply for the special-class electrical load.

[0056] It should be noted that in this application, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations.

[0057] The above are only the preferred specific embodiments of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the technical field of this application within the technical scope disclosed in this application should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A distribution box for a civil airport navigation aid that can be quickly connected to a mobile generator, characterized in that, It includes a box body (1), one side of the box body (1) is rotatably connected with a box door, and an incoming line circuit breaker unit, an interlock protection unit and an outgoing line circuit breaker unit are sequentially installed on the back plate inside the box body (1) from top to bottom; the incoming line circuit breaker unit includes a first incoming line circuit breaker (6), a second incoming line circuit breaker (7) and a third incoming line circuit breaker (8); the interlock protection unit includes an automatic transfer switch (9) and an electrical interlock device (10); the outgoing line circuit breaker unit includes an outgoing line circuit breaker, the input end of the first incoming line circuit breaker (6) is electrically connected to a mobile generator, and the output end of the first incoming line circuit breaker (6) is electrically connected to the electrical interlock device (10); the input ends of the second incoming line circuit breaker (7) and the third incoming line circuit breaker (8) are both connected with ordinary mains cables, the output ends of the second incoming line circuit breaker (7) and the third incoming line circuit breaker (8) are both electrically connected to the automatic transfer switch (9), the output ends of the automatic transfer switch (9) and the electrical interlock device (10) are both electrically connected to the input end of the outgoing line circuit breaker, and the output end of the outgoing line circuit breaker is connected to an electrical equipment through a cable.

2. The civil airport navigation station distribution box capable of quickly accessing a mobile generator according to claim 1, wherein The first incoming line circuit breaker (6), the second incoming line circuit breaker (7), the third incoming line circuit breaker (8), the automatic transfer switch (9), the electrical interlock device (10) and the outgoing line circuit breaker are all fixed on the back plate inside the box body (1) through a circuit breaker guide rail (16).

3. A distribution box of a civil airport navigation aid according to claim 1, which is capable of quickly accessing a mobile generator, characterized in that, A quick access device is arranged between the input end of the first incoming line circuit breaker (6) and the mobile generator. The quick access device is installed on the side plate of the box body (1) and includes a male connector and a female connector which are arranged in a matching manner. The male connector is connected to the mobile generator through a cable, and the female connector is connected to the first incoming line circuit breaker (6) through a cable.

4. A distribution box for a civil airport navigation station capable of quickly accessing a mobile generator according to claim 1, characterized in that Through holes are formed in both the top plate and the bottom plate of the box body (1) for incoming or outgoing lines.

5. The civil airport navigation aid distribution box capable of quickly accessing a mobile generator according to claim 1, wherein, A wiring row is further included inside the box body (1), and the wiring row is installed on one side of the outgoing line circuit breaker.

6. The civil airport navigation aid distribution box capable of quickly accessing a mobile generator according to claim 5, wherein, The wiring row includes a neutral line row and a protective earthing line row; the neutral line row is connected to the back plate inside the box body (1) through an insulating pad and is electrically connected to the neutral line of the box body (1); the protective earthing line row is welded on the back plate inside the box body and is electrically connected to the earthing line of the box body.

7. A distribution box for a civil airport navigation aid that can be quickly connected to a mobile generator according to claim 5, characterized in that, An arrester (12) and an arrester backup protection device (11) are installed on one side of the outgoing line circuit breaker away from the wiring row.

8. A distribution box for a civil airport navigation station that can be quickly connected to a mobile generator according to claim 1, characterized in that, A box lock (3) and an intelligent meter (2) are installed on the box door.

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