Diesel generating set parallel control cabinet

Abstract

The utility model discloses a parallel control cabinet of a diesel generating set in the technical field of control cabinets, which comprises a controller shell, a working inner cavity is arranged on the inner wall of the controller shell, a partition plate is fixedly connected to the inner wall of the working inner cavity, and an insulating coating is fixedly connected to the inner wall of the working inner cavity. The inner walls of the top ends of the working inner cavity on two sides of the separator plate are fixedly connected with circuit breakers. Internal components are reasonably arranged, so that the heat dissipation effect of the control cabinet is improved, and the service life of the components is prolonged; meanwhile, the wiring mode is simplified, the risks of wiring errors and looseness are reduced, and the stability of the system is improved. The control cabinet integrates various components such as the circuit breaker, the contactor, the relay, the thermal relay, the mutual inductor, the fuse, the air switch, the intermediate relay, the PLC and the like, realizes comprehensive control of the parallel system of the diesel generating set, and meets diversified requirements of the parallel system of the modern diesel generating set.

Description

Technical Field

[0001] This utility model relates to the field of control cabinet technology, specifically a parallel control cabinet for diesel generator sets. Background Technology

[0002] In existing parallel control systems for diesel generator sets, the control cabinet, as a core component, directly affects the stability and reliability of the entire parallel system due to its structural design and functional configuration. Traditional parallel control cabinets for diesel generator sets often suffer from problems such as complex structure, cumbersome wiring, and difficult maintenance. These problems not only increase the operating costs of the system but may also make it difficult to troubleshoot system faults in a timely manner, thereby affecting the parallel operation performance of the diesel generator sets.

[0003] Specifically, the unreasonable layout of components inside traditional control cabinets leads to poor heat dissipation and affects the lifespan of components. Furthermore, the complex wiring methods of traditional control cabinets are prone to errors or loose connections, posing a threat to the stable operation of the system. In addition, traditional control cabinets also have insufficient functional configurations, making it difficult to meet the diverse needs of modern diesel generator set parallel systems. Utility Model Content

[0004] The purpose of this utility model is to provide a parallel control cabinet for diesel generator sets to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a parallel control cabinet for a diesel generator set, comprising a controller housing, an inner working cavity formed on the inner wall of the controller housing, a partition fixedly connected to the inner wall of the working cavity, an insulating coating fixedly connected to the inner wall of the working cavity, a circuit breaker fixedly connected to the top inner wall of the working cavity located on both sides of the partition, a contactor fixedly connected to the inner wall of the working cavity located at the bottom end of the circuit breaker, a relay fixedly connected to the inner wall of the working cavity located at the bottom end of the contactor, a thermal relay fixedly connected to the inner wall of the working cavity located at the bottom end of the relay, a current transformer fixedly connected to the inner wall of the working cavity located at the bottom end of the thermal relay, and multiple connecting components evenly and fixedly connected through the top and bottom of the controller housing.

[0006] As a further embodiment of this utility model: a fuse is fixedly connected to the inner wall of the working cavity located at the bottom end of the current transformer, and an air switch is fixedly connected to the inner wall of the working cavity located at the bottom end of the fuse.

[0007] As a further embodiment of this utility model: an intermediate relay is fixedly connected to the inner wall of the working cavity located at the bottom end of the air switch, and a PLC is fixedly connected to the inner wall of the working cavity located at the bottom end of the intermediate relay.

[0008] As a further embodiment of this utility model: the circuit breaker, contactor, relay, thermal relay, transformer, fuse, air switch, intermediate relay and PLC are connected to each other in sequence.

[0009] As a further embodiment of this utility model: a through groove is provided through one side wall of the controller housing, and a switch is provided through the inner wall of the through groove. The signal output terminal of the switch is electrically connected to the control terminal of the contactor.

[0010] As a further embodiment of this utility model: each of the multiple connecting components includes an insulating sleeve, the inner wall of each of the multiple insulating sleeves is provided with a connecting cavity, the inner wall of each of the multiple connecting cavities is fixedly connected with a connecting core, and one end of each of the multiple connecting cores passing through the controller housing is electrically connected to a circuit component that matches the position.

[0011] As a further improvement of this utility model: the two side walls of the controller housing away from the switch are fixedly connected to fixing blocks, and the two fixing blocks are threadedly connected to multiple fixing bolts.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: By rationally arranging the internal components, the heat dissipation effect of the control cabinet is improved, and the service life of the components is extended. Simultaneously, the wiring method is simplified, reducing the risk of wiring errors and loosening, and improving system stability. The control cabinet of this utility model integrates various components such as circuit breakers, contactors, relays, thermal relays, transformers, fuses, air switches, intermediate relays, and PLCs, realizing comprehensive control of the parallel diesel generator set system and meeting the diverse needs of modern parallel diesel generator set systems. The inclusion of control elements such as knife switches allows operators to easily control the parallel operation of the diesel generator sets, improving system operability. The control cabinet of this utility model adopts a modular design, making component replacement and maintenance more convenient and reducing system maintenance costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of a parallel control cabinet for a diesel generator set according to the present invention;

[0014] Figure 2 This utility model relates to a parallel control cabinet for diesel generator sets. Figure 1 Enlarged structural diagram at point A;

[0015] Figure 3 This utility model relates to a parallel control cabinet for diesel generator sets. Figure 1 Enlarged structural diagram at point B;

[0016] Figure 4This is a cross-sectional view of the controller housing in a parallel control cabinet for a diesel generator set according to this utility model.

[0017] In the diagram: 1. Controller housing; 2. Connecting assembly; 21. Insulating sleeve; 22. Connecting cavity; 23. Connecting core; 3. Fixing block; 4. Through slot; 5. Knife switch; 6. Working cavity; 7. Insulating coating; 8. Partition plate; 9. Circuit breaker; 10. Contactor; 11. Relay; 12. Thermal relay; 13. Current transformer; 14. Fuse; 15. Air switch; 16. Intermediate relay; 17. PLC. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "configuration" should be interpreted broadly. For example, they can refer to a fixed connection or configuration, a detachable connection or configuration, or an integral connection or configuration. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Please see Figures 1-4 In this embodiment of the utility model, a parallel control cabinet for a diesel generator set is provided:

[0023] Example 1

[0024] The control cabinet includes a controller housing 1, the inner wall of which has a working cavity 6. A partition 8 is fixedly connected to the inner wall of the working cavity 6 to divide the working cavity 6 into different areas to facilitate the layout of components and heat dissipation. An insulating plating layer 7 is also fixedly connected to the inner wall of the working cavity 6 to improve the insulation performance of the control cabinet.

[0025] Circuit breakers 9 are fixedly connected to the top inner walls of the partitions 8 on both sides of the working cavity 6 to protect the circuit from faults such as overload and short circuit. Contactors 10 are fixedly connected to the inner wall at the bottom of the circuit breaker 9 to control the parallel operation of the diesel generator set. Relays 11 are fixedly connected to the inner wall at the bottom of the contactor 10 to achieve automatic control and protection of the circuit.

[0026] A thermal relay 12 is fixedly connected to the inner wall at the bottom of relay 11 to protect the circuit from overheating. A current transformer 13 is fixedly connected to the inner wall at the bottom of thermal relay 12 to measure parameters such as current and voltage in the circuit. A fuse 14 is fixedly connected to the inner wall at the bottom of current transformer 13 to disconnect the circuit in case of overload or short circuit.

[0027] An air switch 15 is fixedly connected to the inner wall at the bottom of the fuse 14 for manually controlling the circuit's on / off state. An intermediate relay 16 is fixedly connected to the inner wall at the bottom of the air switch 15 for expanding and controlling the circuit. A PLC (Programmable Logic Controller) 17 is fixedly connected to the inner wall at the bottom of the intermediate relay 16 for automating the control and monitoring of the diesel generator set parallel system.

[0028] Example 2

[0029] This embodiment is basically the same as Embodiment 1, except that a through groove 4 is provided through one side wall of the controller housing 1, and a switch 5 is provided through the inner wall of the through groove 4. The signal output terminal of the switch 5 is electrically connected to the control terminal of the contactor 10. By operating the switch 5, the on and off of the contactor 10 can be easily controlled, thereby realizing the control of the parallel diesel generator set system.

[0030] Example 3

[0031] This embodiment is basically the same as Embodiment 1 or Embodiment 2, except that: each of the multiple connecting components 2 includes an insulating sleeve 21, the inner wall of the insulating sleeve 21 has a connecting cavity 22, and a connecting core 23 is fixedly connected to the inner wall of the connecting cavity 22. The connecting core 23 passes through one end of the controller housing 1 and is electrically connected to a circuit component that matches the position, so as to realize the connection between the control cabinet and the external circuit.

[0032] The working principle of this utility model is as follows: When it is necessary to start the diesel generator set parallel system, the operator first operates the switch 5 to energize and close the contactor 10, thereby connecting the diesel generator set to the parallel system. At this time, the PLC 17 starts working and automatically controls and monitors the parallel operation of the diesel generator set according to the preset program and parameters.

[0033] During parallel operation, the current transformer 13 measures parameters such as current and voltage in the circuit in real time and transmits these parameters to the PLC 17 for processing. Based on the processing results, the PLC 17 controls components such as the relay 11 and thermal relay 12 to achieve automatic control and protection of the circuit. When the circuit experiences faults such as overload, short circuit, or overheating, the PLC 17 will immediately issue a command to disconnect the circuit breaker 9 or fuse 14 to protect the safe and stable operation of the diesel generator set parallel system.

[0034] Furthermore, the control cabinet of this utility model adopts a modular design, making component replacement and maintenance more convenient. When a component malfunctions, the operator only needs to disassemble and replace the faulty component, without having to disassemble and repair the entire control cabinet, thereby reducing system maintenance costs.

[0035] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0036] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A diesel generator set paralleling control cabinet comprising a controller housing (1), characterized in that: The inner wall of the controller shell (1) is provided with a working inner cavity (6), the inner wall of the working inner cavity (6) is fixedly connected with a partition plate (8), the inner wall of the working inner cavity (6) is fixedly connected with an insulating coating (7), the top inner wall of the working inner cavity (6) on both sides of the partition plate (8) is fixedly connected with a circuit breaker (9), the inner wall of the working inner cavity (6) at the bottom end of the circuit breaker (9) is fixedly connected with a contactor (10), the inner wall of the working inner cavity (6) at the bottom end of the contactor (10) is fixedly connected with a relay (11), the inner wall of the working inner cavity (6) at the bottom end of the relay (11) is fixedly connected with a thermal relay (12), the inner wall of the working inner cavity (6) at the bottom end of the thermal relay (12) is fixedly connected with a mutual inductor (13), and the top and bottom of the controller shell (1) are uniformly and fixedly connected with a plurality of connecting assemblies (2).

2. A diesel generator set paralleling control cabinet according to claim 1, characterized in that: The inner wall of the working inner cavity (6) at the bottom end of the mutual inductor (13) is fixedly connected with a fuse (14), and the inner wall of the working inner cavity (6) at the bottom end of the fuse (14) is fixedly connected with an air switch (15).

3. A diesel generator set paralleling control cabinet according to claim 2, characterized in that: The inner wall of the working inner cavity (6) at the bottom end of the air switch (15) is fixedly connected with an intermediate relay (16), and the inner wall of the working inner cavity (6) at the bottom end of the intermediate relay (16) is fixedly connected with a PLC (17).

4. A diesel generator set paralleling control cabinet according to claim 3, characterized in that: The circuit breaker (9), the contactor (10), the relay (11), the thermal relay (12), the mutual inductor (13), the fuse (14), the air switch (15), the intermediate relay (16) and the PLC (17) are sequentially connected in circuit with each other.

5. A diesel generator set paralleling control cabinet as defined in claim 1, wherein: The side wall of one end of the controller shell (1) is provided with a through groove (4), the inner wall of the through groove (4) is provided with a blade (5), and the signal output end of the blade (5) is electrically connected with the control end of the contactor (10).

6. A diesel generator set paralleling control cabinet as defined in claim 1, wherein: A plurality of the connecting assemblies (2) each comprise an insulating sleeve (21), the inner wall of each of the plurality of insulating sleeves (21) is provided with a connecting inner cavity (22), the inner wall of each of the plurality of connecting inner cavities (22) is fixedly connected with a connecting core (23), and the plurality of connecting cores (23) are electrically connected with circuit original devices matched in position and penetrating through one end of the controller shell (1).

7. A diesel generator set paralleling control cabinet as defined in claim 1, wherein: The two side walls of the end of the controller shell (1) away from the blade (5) are fixedly connected with fixing blocks (3), and a plurality of fixing bolts are threadedly connected through the fixing blocks (3).

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