Special safety isolation generator system for airport apron construction

Abstract

The utility model discloses a safety isolation generator system special for airport apron construction. The safety isolation generator system comprises a power generation module, a safety isolation module and an electricity load module. Wherein the power supply output end of the power generation module is electrically connected with the input end of the safety isolation module, the output end of the safety isolation module is electrically connected with the power supply end of the power utilization load module, the grounding output end of the power generation module is grounded, and the power utilization load module is not grounded. The power generation module is used for realizing power generation and providing electric energy required by the operation of the electricity load module, and the power generation module is grounded to form an electrical loop of a power generation power supply side; the safety isolation module realizes electrical isolation between the power generation module and the power utilization load module, so that an electrical loop is not formed between the power utilization load module and the power generation module, the power utilization load module is not grounded, and the electrical isolation can be realized without connecting the airport apron power utilization equipment with a grounding device; and the problems of electric shock and the like caused by accidental electric leakage are avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of generators and electric shock protection, specifically relating to a safety isolation generator system for airport apron construction. Background Technology

[0002] With the booming development of my country's aviation industry and the accelerated pace of urbanization, the construction, renovation, and expansion of airports have become crucial infrastructure projects for promoting regional economic development and enhancing international image. Among these, the apron, as a key area connecting the terminal building and aircraft, directly impacts the safety and efficiency of airport operations through critical aspects such as fuel pipeline construction and apron pavement cutting.

[0003] The construction of fuel supply pipelines on the apron is a complex and meticulous task in airport construction. It requires a rational and reliable pipeline layout to ensure a smooth fuel supply and rapid shut-off in emergencies. This process relies heavily on the use of power tools, welding equipment, and monitoring instruments. Similarly, apron pavement cutting is a common operation in airport expansion and renovation, involving the refurbishment of existing runways and preparation for expansion areas, also requiring significant electrical support. These devices not only consume large amounts of electricity during operation but also must strictly adhere to electrical safety regulations to prevent electric shock accidents and electrical fires.

[0004] However, as a rigid, continuous structure without specific electrical connection points, the concrete pavement of an airstrip does not inherently meet the requirements for directly installing grounding devices. This means that providing effective neutral and grounding protection for electrical equipment such as generators during construction on the airstrip becomes a challenging issue. Neutral grounding ensures that the neutral point of electrical equipment is connected to the neutral wire of the power system to prevent electric shock accidents caused by live equipment casings; grounding connects the metal casing or frame of electrical equipment to the earth to discharge any leakage current and ensure the safety of personnel and equipment. However, achieving electrical isolation and ensuring construction safety during critical stages such as fuel pipeline construction and airstrip pavement cutting has become a major challenge.

[0005] Therefore, there is an urgent need for a dedicated safety isolation generator system for airport apron construction that enables independent grounding of apron electrical equipment and achieves electrical isolation without requiring a grounding connection for the generator module. Utility Model Content

[0006] The purpose of this utility model is to provide a special safety isolation generator system for airport apron construction, including: a power generation module, a safety isolation module and an electrical load module, wherein the safety isolation module includes: a first circuit protection unit, a safety isolation unit and a second circuit protection unit;

[0007] The power output terminal of the power generation module is electrically connected to the input terminal of the safety isolation module, the output terminal of the safety isolation module is electrically connected to the power supply terminal of the power load module, the grounding output terminal of the power generation module is grounded, the protection terminal of the safety isolation module is grounded, and the power load module is not grounded.

[0008] The input terminal of the first circuit protection unit serves as the input terminal of the safety isolation module and is electrically connected to the power supply output terminal of the power generation module. The output terminal of the first circuit protection unit is electrically connected to the input terminal of the safety isolation unit. The output terminal of the safety isolation unit is electrically connected to the input terminal of the second circuit protection unit. The output terminal of the second circuit protection unit serves as the output terminal of the safety isolation module and is electrically connected to the power supply terminal of the electrical load module.

[0009] In one possible design, the power generation module includes a three-phase four-wire AC generator;

[0010] The three-phase four-wire AC generator includes three output terminals, and all three output terminals of the three-phase four-wire AC generator are electrically connected to the input terminals of the safety isolation module as power supply output terminals of the power generation module.

[0011] In one possible design, the first circuit protection unit further includes a first fuse subunit;

[0012] The first fuse subunit is electrically connected between the three-phase four-wire AC generator and the safety isolation unit.

[0013] In one possible design, the safety isolation unit includes a safety isolation transformer;

[0014] The input terminal of the safety isolation transformer serves as the input terminal of the safety isolation unit and is electrically connected to the output terminal of the first fuse subunit. The output terminal of the safety isolation transformer serves as the output terminal of the safety isolation unit and is electrically connected to the input terminal of the second circuit protection unit.

[0015] In one possible design, the safety isolation transformer is a three-phase isolation transformer;

[0016] The primary side of the three-phase isolation transformer is electrically connected to the output terminal of the first fuse subunit, and the secondary side of the three-phase isolation transformer is electrically connected to the input terminal of the second circuit protection unit.

[0017] In one possible design, the second circuit protection unit further includes a first switch subunit and a second fuse subunit;

[0018] The input terminal of the first switch subunit is electrically connected to the secondary side of the three-phase isolation transformer, the output terminal of the first switch subunit is electrically connected to the input terminal of the second fuse subunit, the output terminal of the second fuse subunit is electrically connected to the input terminal of the second switch subunit, and the output terminal of the second switch subunit is electrically connected to the power supply terminal of the power load module.

[0019] In one possible design, the turns ratio of the three-phase isolation transformer is 1:1.

[0020] In one possible design, the electrical load module includes a circuit breaker unit and a load appliance;

[0021] The input terminal of the circuit breaker unit serves as the power supply terminal of the electrical load module and is electrically connected to the output terminal of the safety isolation module. The output terminal of the circuit breaker unit is electrically connected to the input terminal of the load appliance.

[0022] In one possible design, the electrical load module further includes a residual current device (RCD), and the output of the circuit breaker unit is electrically connected to the input of the load appliance through the RCD.

[0023] Beneficial Effects: This utility model provides a dedicated safety isolation generator system for airport apron construction, including a power generation module, a safety isolation module, and an electrical load module. The power output terminal of the power generation module is electrically connected to the input terminal of the safety isolation module, and the output terminal of the safety isolation module is electrically connected to the power supply terminal of the electrical load module. The grounding output terminal of the power generation module is grounded, the protection terminal of the safety isolation module is grounded, and the electrical load module is not grounded. The power generation module generates electricity and provides the electrical energy required for the electrical load module to operate. The grounding output terminal of the power generation module is grounded to form an electrical circuit on the power supply side. The safety isolation module provides electrical isolation between the power generation module and the electrical load module. This ensures that no electrical circuit or current loop is formed between the electrical load module and the power generation module, and the electrical load module is not grounded. This design allows the apron equipment to be independently grounded, achieving electrical isolation without requiring a grounding connection to the power generation module, thus avoiding problems such as electric shock caused by accidental leakage. Attached image description:

[0024] Figure 1 This is a functional logic block diagram of the special safety isolation generator system for airport apron construction in Embodiment 1 of this utility model;

[0025] Figure 2 This is a circuit diagram of the special safety isolation generator system for airport apron construction in Embodiment 2 of this utility model.

[0026] The components include: 1. Power generation module; 2. Safety isolation module; 3. Electrical load module; 4. Three-phase isolation transformer; 5. Load electrical appliance; 6. First fuse sub-unit; 7. First switch sub-unit; 8. Second fuse sub-unit; 9. Second switch sub-unit; and 10. Circuit breaker unit. Detailed Implementation

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0028] It should be understood that although the terms first, second, etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, the first unit may be referred to as the second unit, and similarly, the second unit may be referred to as the first unit, without departing from the scope of the exemplary embodiments of this utility model.

[0029] It should be understood that the term "and / or" that may appear in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" that may appear in this document describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " that may appear in this document generally indicates that the related objects before and after it are in an "or" relationship.

[0030] Example 1:

[0031] like Figure 1 As shown, this embodiment provides a dedicated safety isolation generator system for airport apron construction, including:

[0032] The system comprises a power generation module 1, a safety isolation module 2, and a power load module 3, wherein the safety isolation module includes: a first circuit protection unit, a safety isolation unit, and a second circuit protection unit;

[0033] Among them, the power supply output terminal of the power generation module 1 is electrically connected to the input terminal of the safety isolation module 2, the output terminal of the safety isolation module 2 is electrically connected to the power supply terminal of the power load module 3, and the grounding output terminal of the power generation module 1 is grounded, the protection terminal of the safety isolation module 2 is grounded, and the power load module 3 is not grounded.

[0034] The input terminal of the first circuit protection unit serves as the input terminal of the safety isolation module 2 and is electrically connected to the power supply output terminal of the power generation module 1. The output terminal of the first circuit protection unit is electrically connected to the input terminal of the safety isolation unit, and the output terminal of the safety isolation unit is electrically connected to the input terminal of the second circuit protection unit. The output terminal of the second circuit protection unit serves as the output terminal of the safety isolation module 2 and is electrically connected to the power supply terminal of the electrical load module 3.

[0035] It should be noted that the power generation module 1, as the core component of the airport apron construction-specific safety isolation generator system provided in this embodiment, bears the crucial responsibility of efficiently converting mechanical energy, chemical energy, or other forms of energy into electrical energy to meet the power requirements for the normal operation of the electrical load modules. This conversion process not only requires high efficiency and stability but also ensures the purity and safety of the electrical energy. To achieve this goal, the power generation module is typically equipped with a dedicated grounding output terminal, which is directly grounded, establishing an electrical circuit on the power generation side. This design helps balance the potential, preventing equipment damage or personnel safety risks caused by potential differences, and also helps discharge possible static electricity accumulation, ensuring the overall stability of the system.

[0036] The introduction of safety isolation module 2 is crucial for the airport apron construction-specific safety isolation generator system provided in this embodiment. Safety isolation module 2 establishes electrical isolation between the generator module and the load module, effectively blocking direct electrical connection between them and preventing the formation of a direct current loop. This design means that even if the load module 3 is not grounded, it can still ensure safe isolation from the generator side, greatly reducing the risk of accidental leakage and electric shock. Furthermore, since the safety isolation module includes a first circuit protection unit, a safety isolation unit, and a second circuit protection unit, this significantly improves the safety and stability of the entire module, ensuring that even in the event of overvoltage or overcurrent, it will not malfunction and damage the entire module.

[0037] This design strategy greatly simplifies the installation and maintenance process of electrical equipment on the airport apron, as it eliminates the need for additional complex grounding connections. This not only saves costs and improves efficiency, but more importantly, it provides a safer and more reliable electrical environment for airport staff and passengers, effectively preventing electric shock injuries that may be caused by electrical faults, and further enhancing the overall safety and reliability of airport operations.

[0038] Example 2:

[0039] like Figure 2 As shown, in one possible implementation, the power generation module 1 includes a three-phase four-wire AC generator;

[0040] The three-phase four-wire AC generator includes three output terminals, all of which serve as power supply output terminals for the power generation module 1 and are electrically connected to the input terminals of the safety isolation module 2.

[0041] In practical applications, the ZP-YP type 50KW diesel generator, commonly used in airport apron construction, is a preferred choice for three-phase four-wire AC generators. It utilizes a high-performance diesel engine as its power source, generating rotational power through the combustion of diesel fuel, which drives the generator rotor to rotate and cut magnetic lines of force to produce electricity. This model of generator has a rated power of 50 kilowatts and can continuously and stably output power under normal operating conditions, meeting various power needs during airport apron construction.

[0042] In one possible implementation, the first circuit protection unit further includes a first fuse subunit 6;

[0043] The first fuse subunit 6 is electrically connected between the three-phase four-wire AC generator and the safety isolation unit.

[0044] In one possible implementation, the safety isolation unit includes a safety isolation transformer;

[0045] The input terminal of the safety isolation transformer serves as the input terminal of the safety isolation unit and is electrically connected to the output terminal of the first fuse subunit 6. The output terminal of the safety isolation transformer serves as the output terminal of the safety isolation unit and is electrically connected to the input terminal of the second circuit protection unit.

[0046] In one possible implementation, the safety isolation transformer is a three-phase isolation transformer 4;

[0047] The primary side of the three-phase isolation transformer 4 is electrically connected to the output terminal of the first fuse subunit 6, and the secondary side of the three-phase isolation transformer 4 is electrically connected to the input terminal of the second circuit protection unit.

[0048] Furthermore, the core of the three-phase isolation transformer 4 is grounded as the protection terminal of the safety isolation module 2.

[0049] In one possible implementation, the second circuit protection unit further includes a first switch subunit 7 and a second fuse subunit 8 and a second switch subunit 9;

[0050] The input terminal of the first switch subunit 7 is electrically connected to the secondary side of the three-phase isolation transformer 4, the output terminal of the first switch subunit 7 is electrically connected to the input terminal of the second fuse subunit 8, the output terminal of the second fuse subunit 8 is electrically connected to the input terminal of the second switch subunit 9, and the output terminal of the second switch subunit 9 is electrically connected to the power supply terminal of the power load module 3.

[0051] The first fuse subunit 6 and the second fuse subunit 8 mentioned above can use fuses of the same specification. Furthermore, the first fuse subunit 6 and the second fuse subunit 8 each include three fuses according to the primary and secondary sides of the input and output of the three-phase isolation transformer 4, which are used to form overload protection and short circuit protection.

[0052] In one possible implementation, the turns ratio of the three-phase isolation transformer 4 is 1:1.

[0053] In other words, the three-phase isolation transformer 4 does not actually step up or step down the voltage; it is only used to form isolation protection and does not affect the power supply of the power generation module 1 to the power load module 3.

[0054] In one possible implementation, the electrical load module 3 includes a circuit breaker unit 10 and a load appliance 5;

[0055] The input terminal of the circuit breaker unit 10 serves as the power supply terminal of the electrical load module 3 and is electrically connected to the output terminal of the safety isolation module 2. The output terminal of the circuit breaker unit 10 is electrically connected to the input terminal of the load appliance 5.

[0056] In practical applications, circuit breaker unit 10 can preferentially use NM10-150 / 330 molded case circuit breakers. When the current in the circuit exceeds the rated value, the circuit breaker will automatically trip to disconnect the circuit and prevent the equipment from overheating and being damaged. In addition, when a short circuit fault occurs in the circuit, the circuit breaker can quickly disconnect the circuit to prevent the short circuit current from causing harm to the equipment and personnel, thus realizing the protection against electric shock for the electrical load module 3.

[0057] In one possible implementation, the electrical load module 3 further includes a residual current device (RCD), and the output terminal of the circuit breaker unit 10 is electrically connected to the input terminal of the load appliance 5 through the RCD.

[0058] Among them, the leakage current protector and the grounding protection of the safety isolation module 2 work together to form a dual protection of leakage current and grounding.

[0059] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A safety isolation generator system specifically designed for airport apron construction. Its features are, include: The power generation module (1), the safety isolation module (2), and the power load module (3) are provided, and the safety isolation module includes: a first circuit protection unit, a safety isolation unit, and a second circuit protection unit. Wherein, the power output terminal of the power generation module (1) is electrically connected to the input terminal of the safety isolation module (2), the output terminal of the safety isolation module (2) is electrically connected to the power supply terminal of the power load module (3), and the grounding output terminal of the power generation module (1) is grounded, the protection terminal of the safety isolation module (2) is grounded, and the power load module (3) is not grounded; The input terminal of the first circuit protection unit serves as the input terminal of the safety isolation module (2) and is electrically connected to the power supply output terminal of the power generation module (1). The output terminal of the first circuit protection unit is electrically connected to the input terminal of the safety isolation unit. The output terminal of the safety isolation unit is electrically connected to the input terminal of the second circuit protection unit. The output terminal of the second circuit protection unit serves as the output terminal of the safety isolation module (2) and is electrically connected to the power supply terminal of the power load module (3).

2. The dedicated safety isolation generator system for airport apron construction according to claim 1, characterized in that, The power generation module (1) includes a three-phase four-wire AC generator; The three-phase four-wire AC generator includes three output terminals, and the three output terminals of the three-phase four-wire AC generator are all used as power supply output terminals of the power generation module (1) and electrically connected to the input terminals of the safety isolation module (2).

3. The dedicated safety isolation generator system for airport apron construction according to claim 2, characterized in that, The first circuit protection unit further includes a first fuse subunit (6); The first fuse subunit (6) is electrically connected between the three-phase four-wire AC generator and the safety isolation unit.

4. The dedicated safety isolation generator system for airport apron construction according to claim 3, characterized in that, The safety isolation unit includes a safety isolation transformer; The input terminal of the safety isolation transformer serves as the input terminal of the safety isolation unit and is electrically connected to the output terminal of the first fuse subunit (6). The output terminal of the safety isolation transformer serves as the output terminal of the safety isolation unit and is electrically connected to the input terminal of the second circuit protection unit.

5. The dedicated safety isolation generator system for airport apron construction according to claim 4, characterized in that, The safety isolation transformer is a three-phase isolation transformer (4); The primary side of the three-phase isolation transformer (4) is electrically connected to the output terminal of the first fuse subunit (6), and the secondary side of the three-phase isolation transformer (4) is electrically connected to the input terminal of the second circuit protection unit.

6. The dedicated safety isolation generator system for airport apron construction according to claim 5, characterized in that, The second circuit protection unit also includes a first switch subunit (7), a second fuse subunit (8), and a second switch subunit (9); The input terminal of the first switch subunit (7) is electrically connected to the secondary side of the three-phase isolation transformer (4), the output terminal of the first switch subunit (7) is electrically connected to the input terminal of the second fuse subunit (8), the output terminal of the second fuse subunit (8) is electrically connected to the input terminal of the second switch subunit (9), and the output terminal of the second switch subunit (9) is electrically connected to the power supply terminal of the power load module (3).

7. The dedicated safety isolation generator system for airport apron construction according to claim 5, characterized in that, The turns ratio of the three-phase isolation transformer (4) is 1:

1.

8. The dedicated safety isolation generator system for airport apron construction according to claim 1, characterized in that, The electrical load module (3) includes a circuit breaker unit (10) and a load appliance (5); The input terminal of the circuit breaker unit (10) serves as the power supply terminal of the electrical load module (3) and is electrically connected to the output terminal of the safety isolation module (2). The output terminal of the circuit breaker unit (10) is electrically connected to the input terminal of the load appliance (5).

9. The dedicated safety isolation generator system for airport apron construction according to claim 8, characterized in that, The electrical load module (3) also includes a leakage current protector, and the output terminal of the circuit breaker unit (10) is electrically connected to the input terminal of the load appliance (5) through the leakage current protector.

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