Enclosed bus equipment and generator electrical system

Abstract

The invention discloses an enclosed bus device and a generator electrical system, the enclosed bus device is used for connecting a generator and a main loop transformer, a water retaining member and a drainage assembly are configured in an enclosed bus body, the water retaining member is located at the upstream of the main loop transformer, and the drainage assembly is located at the downstream of the main loop transformer. According to the utility model, accumulated water in the enclosed bus main body can be prevented from flowing to the main loop transformer, so that the accumulated water dripping on a disc insulator of the main loop transformer is reduced, the power connection fault of a generator stator is reduced, and the drainage assembly is communicated with the enclosed bus main body, so that the accumulated water in the enclosed bus main body is drained through the drainage assembly. Condensed accumulated water formed in the enclosed bus body is discharged, so that potential safety hazards in the operation process of a generator set are reduced, and normal operation of the generator set is ensured.

Description

Technical Field

[0001] This application relates to the field of generator technology, and more specifically, to an enclosed busbar device and a generator electrical system. Background Technology

[0002] In thermal power plants, the generator output side is connected to the plant service transformer and the main transformer via an enclosed busbar. However, in some areas with large temperature differences between day and night, water vapor condenses inside the enclosed busbar due to the internal temperature difference, resulting in water accumulation inside the enclosed busbar. If the accumulated water drips onto the disc insulators of the plant service transformer or the main transformer, it can cause a generator stator connection failure, posing a safety hazard during generator operation.

[0003] In conclusion, reducing safety hazards during generator set operation is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide enclosed busbar equipment and generator electrical systems to reduce safety hazards during generator operation.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] An enclosed busbar device is used to connect a generator and a main circuit transformer. The enclosed busbar device includes: an enclosed busbar body, in which a water-blocking component and a drainage component are disposed; the water-blocking component is located upstream of the main circuit transformer and is used to prevent water accumulated inside the enclosed busbar body from flowing to the main circuit transformer; the drainage component is connected to the enclosed busbar body so that the drainage component can drain the water accumulated inside the enclosed busbar body.

[0007] In some embodiments, the enclosed busbar body has a T-shaped structure, and the water-blocking member is located at the fork of the T-shaped enclosed busbar body.

[0008] In some embodiments, there are two water-blocking members, which are distributed on both sides of the fork in the road.

[0009] In some embodiments, a micro-positive pressure device is also included, which is connected to the enclosed busbar body and is used to inject gas into the enclosed busbar body; the water-blocking component is an insulating baffle.

[0010] In some embodiments, the insulating baffle is a half baffle, and the insulating baffle is fixedly connected to the bottom surface of the enclosed busbar body.

[0011] In some embodiments, the insulating baffle is sealed to the enclosed busbar body by a sealing ring or waterproof adhesive.

[0012] In some embodiments, the drainage assembly includes a drainage pipe and a drainage valve; the drainage pipe is connected to the enclosed busbar body, and the drainage valve is disposed on the drainage pipe.

[0013] In some embodiments, the drainage pipe is connected to the bottom of the enclosed busbar body;

[0014] Alternatively, the drainage pipe is connected to the branch point of the enclosed busbar body.

[0015] In some embodiments, the drainage assembly is located upstream of the water-blocking member, and there are two drainage assemblies, each corresponding to one of the water-blocking members.

[0016] A generator electrical system includes: a generator, a plant transformer, a main transformer, and an enclosed busbar device as described above; the enclosed busbar device is connected between the generator, the plant transformer, and the main transformer.

[0017] The enclosed busbar equipment provided in this application is used to connect a generator and a main circuit transformer. A water-blocking component and a drainage assembly are configured within the enclosed busbar body. The water-blocking component is located upstream of the main circuit transformer and can prevent internal water accumulation in the enclosed busbar body from flowing towards the main circuit transformer, thereby reducing water dripping onto the disc insulators of the main circuit transformer and reducing generator stator connection faults. The drainage assembly connects to the enclosed busbar body to drain internal water accumulation and condensate formed within the enclosed busbar body, thus reducing safety hazards during generator operation and ensuring its normal operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the enclosed busbar equipment provided in the embodiments of this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 100 - Enclosed busbar body, 110 - Water baffle, 120 - Drainage pipe, 130 - Drainage valve. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The terminology used in the following embodiments is for the purpose of describing specific embodiments only and is not intended to be a limitation of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, "one or more" refers to one, two, or more; "and / or" describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0024] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0025] like Figure 1As shown in the embodiment of this application, the enclosed busbar device is used to connect a generator and a main circuit transformer. The enclosed busbar device includes an enclosed busbar body 100, within which a water-blocking component 110 and a drainage assembly are disposed. The water-blocking component 110 is located upstream of the main circuit transformer to prevent water accumulated inside the enclosed busbar body 100 from flowing to the main circuit transformer, thereby reducing water dripping onto the disc insulators of the main circuit transformer. The drainage assembly connects to the enclosed busbar body 100 to drain the water accumulated inside the enclosed busbar body 100. By draining the condensate formed inside the enclosed busbar body 100, the power connection faults of the generator stator are reduced, thereby reducing safety hazards during generator operation and ensuring its normal operation.

[0026] It should be noted that the main circuit transformer includes the plant service transformer and the main transformer. It is the main transformer located on the generator outlet side and is the core equipment of the power plant's main electrical wiring.

[0027] like Figure 1 As shown, the enclosed busbar body 100 has a T-shaped structure, and the water-blocking component 110 is located at the junction of the T-shaped enclosed busbar body 100 to prevent the accumulated water inside the enclosed busbar body 100 from flowing to the main circuit transformer.

[0028] like Figure 1 As shown, there are two water-blocking components 110, which are distributed on both sides of the junction position to block the internal water accumulation from both sides of the enclosed busbar body 100, thereby further reducing water dripping.

[0029] like Figure 1 As shown, the drainage component is located upstream of the water-blocking component 110, and there are two drainage components. The drainage components correspond one-to-one with the water-blocking component 110 so that the water blocked by the water-blocking component 110 can be discharged through the drainage components, further reducing the dripping of water.

[0030] The enclosed busbar device provided in this application embodiment also includes a micro-positive pressure device. The micro-positive pressure device is connected to the enclosed busbar body 100 and is used to inject gas into the enclosed busbar body 100. By continuously injecting dry compressed air into the enclosed busbar body 100 through the micro-positive pressure device, the air pressure inside the enclosed busbar body 100 is slightly higher than the external atmospheric pressure. This allows for the existence of tiny gaps in the enclosed busbar body 100. Due to the higher internal air pressure, the gas containing impurities from the outside is blocked, reducing the entry of humid and dusty gas from the outside into the interior of the enclosed busbar body 100.

[0031] In this application, the water-blocking component 110 is an insulating baffle. By setting the water-blocking component 110 as an insulating material, the electrical insulation performance of the enclosed busbar is ensured.

[0032] In some embodiments, the insulating baffle may be made of composite epoxy resin, polycarbonate, or thermoplastic polymer, which are materials with good insulation properties and mechanical strength. This application does not limit this.

[0033] like Figure 1 As shown, the insulating baffle is a half-baffle to allow the dry air injected by the micro-positive pressure device to circulate, and the insulating baffle is fixedly connected to the bottom surface of the enclosed busbar body 100 to prevent water from flowing to the Zhu circuit transformer.

[0034] In this application, the insulating baffle and the enclosed busbar body 100 are sealed together by a sealing ring or waterproof adhesive to further ensure the water-blocking effect of the insulating baffle.

[0035] like Figure 1 As shown, the drainage assembly includes a drainage pipe 120 and a drainage valve 130. The drainage pipe 120 is connected to the enclosed busbar body 100, and the drainage valve 130 is installed on the drainage pipe 120. When it is necessary to drain the water accumulated inside the enclosed busbar body 100, the drainage valve 130 is opened so that the water can be discharged through the drainage pipe 120, thereby reducing the internal water content of the enclosed busbar body 100.

[0036] In some embodiments, the drainage pipe 120 is connected to the bottom of the enclosed busbar body 100 or to a location prone to water accumulation, such as the socket of the enclosed busbar body 100, so that the drainage assembly can discharge as much water as possible.

[0037] In this application, the drainage pipe 120 and the enclosed busbar body 100, as well as the drainage pipe 120 and the drainage valve 130 are all sealed connections to reduce the entry of outside air into the interior of the enclosed busbar body 100.

[0038] The enclosed busbar equipment provided in this application embodiment uses a water-blocking component 110 to prevent water accumulation inside the enclosed busbar body 100 from flowing to the main circuit transformer, thereby reducing water dripping onto the disc insulators of the main circuit transformer. A drainage component connects the enclosed busbar body 100 to drain the water inside the enclosed busbar body 100. By draining the condensate formed inside the enclosed busbar body 100, the power connection faults of the generator stator are reduced, thus eliminating safety hazards during generator operation and ensuring its normal operation.

[0039] This application also provides a generator electrical system, which includes a generator, a plant transformer, a main transformer, and the enclosed busbar equipment described in the above embodiments.

[0040] The enclosed busbar equipment is connected between the generator, the plant transformer and the main transformer to transmit current and power, ensuring normal operation.

[0041] Since the aforementioned enclosed busbar equipment has the aforementioned technical effects, and the aforementioned generator electrical system includes the aforementioned enclosed busbar equipment, the aforementioned generator electrical system also has the corresponding technical effects, which will not be elaborated here.

[0042] The above description of the embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A closed busbar device for connecting a generator to a main circuit transformer, characterized in that The enclosed busbar device comprises: an enclosed busbar body (100) in which a water blocking member (110) and a drainage assembly are arranged; the water blocking member (110) is located upstream of the main circuit transformer, and is used to block the flow of internal water accumulation of the enclosed busbar body (100) to the main circuit transformer; the drainage assembly is communicated with the enclosed busbar body (100) so that the drainage assembly drains the internal water accumulation of the enclosed busbar body (100).

2. The enclosed busbar apparatus of claim 1, wherein, The enclosed busbar body (100) has a T-shaped structure, and the water blocking member (110) is located at a branch position of the enclosed busbar body (100) of the T-shaped structure.

3. The enclosed busbar apparatus of claim 2, wherein, The water blocking member (110) is two, and the two water blocking members (110) are distributed on both sides of the branch position.

4. The enclosed bus apparatus of claim 1, wherein, A micro-positive pressure device is further included, which is communicated with the enclosed busbar body (100), and is used to inject gas into the enclosed busbar body (100); The water blocking member (110) is an insulating baffle.

5. The enclosed bus apparatus of claim 4, wherein, The insulating baffle is a half baffle, and is fixedly connected to the bottom surface of the enclosed busbar body (100).

6. The enclosed bus apparatus of claim 5, wherein, The insulating baffle and the enclosed busbar body (100) are sealedly connected through a sealing ring or waterproof glue.

7. The enclosed bus apparatus of claim 1, wherein, The drainage assembly comprises a drainage pipeline (120) and a drainage valve (130); The drainage pipeline (120) is communicated with the enclosed busbar body (100), and the drainage valve (130) is arranged on the drainage pipeline (120).

8. The enclosed bus apparatus of claim 7, wherein, The drainage pipeline (120) is connected to the bottom of the enclosed busbar body (100). Alternatively, the drainage pipeline (120) is connected to the branch position of the enclosed busbar body (100).

9. The enclosed bus apparatus of claim 3, wherein, The drainage assembly is located upstream of the water blocking member (110), and the drainage assembly is also two, and the drainage assembly corresponds to the water blocking member (110) one by one.

10. An electrical system for an electric generator, characterized in that Comprise: a generator, a plant transformer, a main transformer, and the enclosed busbar device according to any one of claims 1-9; The enclosed busbar device is connected between the generator, the plant transformer, and the main transformer.

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