Two-way corner bus and GIS (Gas Insulated Switchgear) using same

Abstract

The utility model relates to the field of bus connection, in particular to a two-way corner bus and a GIS (Gas Insulated Switchgear) using the same. The two-way corner bus comprises a two-way bent cylinder and a conductor assembly arranged in the two-way bent cylinder, supporting insulators are arranged at two cylinder openings of the two-way bent cylinder, and the conductor assembly comprises a first connecting conductor, a second connecting conductor and a middle conductor. One end of the first connecting conductor and one end of the second connecting conductor are fixedly connected with the corresponding supporting type insulators respectively, one end of the middle conductor is fixedly connected with one of the first connecting conductor and the second connecting conductor, and the other end of the middle conductor is connected with the other one of the first connecting conductor and the second connecting conductor in an inserted mode. And the plugging direction is parallel to the axis of the supporting insulator where the plugged conductor is located. According to the utility model, the two-way corner bus can adopt the arrangement of double supporting insulators, when the two-way corner bus is arranged in the GIS, one of the two supporting insulators can stably support other electrical components arranged in the GIS, and the application scene is wider.

Description

Technical Field

[0001] The utility model relates to the field of busbar connection, in particular to a two-way corner busbar and a GIS using the busbar. Background Technique

[0002] With the rapid development of the national economy and the power industry, the scale of the power grid is becoming increasingly large. The requirements for gas-insulated metal-enclosed switchgear (GIS: Gas Insulated Switchgear) are also getting higher and higher in terms of layout form, maintenance convenience, floor area, environmental friendliness, etc. As an important component in GIS equipment, the busbar is mainly composed of a cylinder, a pot-type insulator, an electrical connection, a conductor, etc., which directly affects the layout form of the power station.

[0003] With the wide application of GIS, its design is trending towards small volume, compact structure, and flexible layout. Generally, the realization of compact and diverse layouts is achieved through corner busbars. The existing two-way corner busbars, as Figure 1 shown, a pot-type insulator 103 is arranged at one end of the cylinder 100, and the other end needs to avoid the straight conductor 102 so that the straight conductor 102 can be smoothly inserted into the L-shaped conductor 101. Therefore, a pot-type insulator 103 cannot be arranged at the cylinder opening where the straight conductor 102 is inserted, that is, this two-way corner busbar cannot realize the setting of double pot-type insulators. When this two-way corner busbar is applied to GIS, when electrical components such as a circuit breaker, a disconnector, and a current transformer need to be arranged above the two-way corner busbar, the two-way corner busbar cannot stably support these electrical components. And in engineering practice, the circuit breaker chamber cannot be connected to the inside of the busbar cylinder. Therefore, this two-way corner busbar cannot be applied to the GIS scenario.

[0004] In summary, there is an urgent need to develop a new type of two-way corner busbar to overcome the problem that the busbar structure cannot support electrical components due to the inability of the existing two-way corner busbar to adopt pot-type insulators at both ends. Content of the Utility Model

[0005] The purpose of the utility model is to provide a two-way corner busbar to solve the technical problem that the busbar structure cannot support electrical components due to the inability of the existing two-way corner busbar to adopt pot-type insulators at both ends. At the same time, the utility model provides a GIS to solve the technical problem that the existing two-way corner busbar used in GIS cannot support electrical components.

[0006] To achieve the above purpose, the two-way corner busbar of the utility model adopts the following technical solutions:

[0007] A two-way corner busbar, comprising a two-way bent cylinder body and a conductor assembly arranged in the two-way bent cylinder body. Support insulators are provided at both cylinder openings of the two-way bent cylinder body. The conductor assembly includes a first connecting conductor, a second connecting conductor, and an intermediate conductor. One ends of the first connecting conductor and the second connecting conductor are respectively fixedly connected to the corresponding support insulators. One end of the intermediate conductor is fixedly connected to one of the first connecting conductor and the second connecting conductor, and the other end is inserted into the other of the first connecting conductor and the second connecting conductor, and the insertion direction is parallel to the axis of the support insulator where the inserted conductor is located.

[0008] Beneficial effects: The present utility model is an element-changing invention and creation based on the technical solution of the existing two-way corner busbar. Specifically, the present utility model is improved on the basis of the technical solution of the existing two-way corner busbar. By specially setting the conductors in the two-way corner busbar, it is divided into three parts, including a first connecting conductor, a second connecting conductor, and an intermediate conductor. The ends of the first and second connecting conductors far from the intermediate conductor are both fixedly connected to the support insulators, and then the two support insulators are respectively fixedly connected to the two openings of the two-way corner busbar cylinder body, so that the two-way corner busbar can adopt the setting of double support insulators, and further an independent insulating gas chamber can be formed inside the two-way corner busbar cylinder body, greatly improving the insulation performance and sealing performance of the two-way corner busbar. One end of the intermediate conductor is inserted into one of the two connecting conductors, and the insertion direction is parallel to the axis of the support insulator where the inserted conductor is located. During the process of assembling the entire busbar, the assembly of the entire conductor assembly can be completed while installing the support insulators, and two support insulators can be set without affecting the conductor assembly in the busbar; moreover, the two-way corner busbar provided by the present utility model can be arranged more flexibly in the GIS. One of the two support insulators can stably support other electrical components arranged in the GIS, and the application scenario is wider.

[0009] Further, the intermediate conductor is a hollow conductor, and a connection end plate for connecting the corresponding conductor is provided at one end thereof. Connection holes are provided on the connection end plate, and the connection end plate is fixedly connected to the corresponding conductor through fasteners inserted through the connection holes.

[0010] Further, an operation hole is provided on the side wall of the end of the intermediate conductor close to the connection end plate for fastening the fastener.

[0011] Further, the operation hole is provided on the side of the intermediate conductor close to the inner side in the bending direction of the two-way bent cylinder body.

[0012] Further, an insertion port is provided at the end of the intermediate conductor inserted into the corresponding conductor, and conductive finger contacts are provided in the insertion port.

[0013] Further, the conductive finger is a circular finger, and a plurality of them are arranged along the insertion direction.

[0014] Further, the intermediate conductor is an L-shaped conductor, and the included angle between its two ends is 90°.

[0015] Further, the two-way elbow cylinder is an L-shaped cylinder, and the included angle between its two ports is 90°.

[0016] Further, the support insulator is a pot-type insulator.

[0017] To achieve the above object, the GIS of the present utility model adopts the following technical solution:

[0018] A GIS includes a two-way corner busbar. The two-way corner busbar includes a two-way elbow cylinder and a conductor assembly arranged in the two-way elbow cylinder. Support insulators are provided at both cylinder ports of the two-way elbow cylinder. The conductor assembly includes a first connecting conductor, a second connecting conductor, and an intermediate conductor. One ends of the first connecting conductor and the second connecting conductor are respectively fixedly connected to the corresponding support insulators. One end of the intermediate conductor is fixedly connected to one of the first connecting conductor and the second connecting conductor, and the other end is inserted into the other of the first connecting conductor and the second connecting conductor, and the insertion direction is parallel to the axis of the support insulator where the inserted conductor is located.

[0019] Beneficial effects: The present utility model is an element-changing invention and creation based on the existing technical solution of the two-way corner busbar. Specifically, the present utility model is improved on the basis of the existing technical solution of the two-way corner busbar. By specially setting the conductors in the two-way corner busbar, it is divided into three parts, including a first connecting conductor, a second connecting conductor, and an intermediate conductor, so that the ends of the first and second connecting conductors far from the intermediate conductor are both fixedly connected to the support insulators, and then the two support insulators are respectively fixedly connected to the two openings of the two-way corner busbar cylinder, enabling the two-way corner busbar to adopt a double-support insulator setting. Furthermore, a separate insulating gas chamber can be formed inside the two-way corner busbar cylinder, greatly improving the insulation performance and sealing performance of the two-way corner busbar. One end of the intermediate conductor is inserted into one of the two connecting conductors, and the insertion direction is parallel to the axis of the support insulator where the inserted conductor is located. During the assembly of the entire busbar, the assembly of the entire conductor assembly can be completed while installing the support insulators, and two support insulators can be provided without affecting the conductor assembly in the busbar; moreover, the two-way corner busbar provided by the present utility model can be arranged more flexibly in the GIS. One of the two support insulators can stably support other electrical components arranged in the GIS, and the application scenario is wider.

[0020] Further, the intermediate conductor is a hollow conductor, and a connection end plate for connecting the corresponding conductor is provided at one end thereof. Connection holes are provided on the connection end plate, and the connection end plate is fixedly connected to the corresponding conductor through fasteners inserted through the connection holes.

[0021] Further, an operation hole is provided on the side wall of one end of the intermediate conductor close to the connection end plate for fastening the fastener.

[0022] Further, the operation hole is provided on one side of the intermediate conductor close to the inner side in the bending direction of the two-way elbow cylinder body.

[0023] Further, an insertion interface is provided at one end of the intermediate conductor inserted into the corresponding conductor, and conductive finger contacts are provided in the insertion interface.

[0024] Further, the conductive finger contacts are annular finger contacts, and a plurality of them are arranged along the insertion direction.

[0025] Further, the intermediate conductor is an L-shaped conductor, and the included angle between its two ends is 90°.

[0026] Further, the two-way elbow cylinder body is an L-shaped cylinder body, and the included angle between its two ports is 90°.

[0027] Further, the support insulator is a pot-type insulator. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of a two-way corner busbar in the prior art;

[0029] Figure 2 is a schematic structural diagram of a two-way corner busbar of the present invention;

[0030] Figure 1 In the figure: 100, cylinder body; 101, L-shaped conductor; 102, straight conductor; 103, pot-type insulator;

[0031] Figure 2 In the figure: 1, two-way elbow cylinder body; 2, intermediate conductor; 3, first connection conductor; 4, second connection conductor; 5, connection end plate; 6, connection hole; 7, fastener; 8, insertion interface; 9, conductive finger contact; 10, ring platform; 11, operation hole; 12, pot-type insulator; 13, hem; 14, sealing ring. Detailed Embodiment

[0032] The features and performance of the present invention will be further described in detail below in conjunction with embodiments.

[0033] The technical concept of the two-way corner busbar of the present invention is as follows:

[0034] In view of the problems existing in the prior art, the utility model makes special settings for the conductors inside the two-way corner busbar, which are divided into three parts, including a first connecting conductor, a second connecting conductor and an intermediate conductor. One end of the intermediate conductor is inserted into one of the two connecting conductors, and the insertion direction is parallel to the axis of the support insulator where the inserted conductor is located. During the process of assembling the entire busbar, the assembly of the entire conductor assembly can be completed while installing the support insulator. Two support insulators can be set without affecting the conductor assembly in the busbar, so that when the two-way corner busbar is applied in GIS, the support insulator can stably support other electrical components arranged in GIS.

[0035] Based on the above technical concept, an embodiment of the two-way corner busbar described in the utility model is as follows:

[0036] As Figure 2 shown, the two-way corner busbar includes a two-way bent cylinder 1 and a conductor assembly arranged in the two-way bent cylinder. Pot-type insulators 12 are fixedly arranged at both barrel openings of the two-way bent cylinder 1. The conductor assembly includes a first connecting conductor 3, a second connecting conductor 4 and an intermediate conductor 2.

[0037] As Figure 2 shown, threaded holes are arranged on the end faces of the first connecting conductor 3 and the second connecting conductor 4 far from the intermediate conductor 2, and bolts are used to fixedly connect the first connecting conductor 3 and the second connecting conductor 4 to the pot-type insulator 12 respectively.

[0038] As Figure 2 shown, the intermediate conductor 2 is a hollow conductor. A connecting end plate 5 is arranged at one end of the intermediate conductor 2, and a connecting hole 6 is opened on the connecting end plate 5. Moreover, an operation hole 11 is also arranged on the side wall of the intermediate conductor 2 near the connecting end plate 5. When connecting the intermediate conductor 2 with the first connecting conductor 3, the fastener 7 is sent into the interior of the intermediate conductor 2 from the operation hole 11, and then the first connecting conductor 3 is fixedly connected to the connecting end plate 5 by using the fastener 7 to pass through the connecting hole 6 on the connecting end plate 5. An insertion interface 8 is arranged at the other end of the intermediate conductor 2, and a plurality of conductive fingers 9 are arranged along the axis direction of the intermediate conductor 2 in the insertion interface 8. The direction of inserting the connecting conductor into the intermediate conductor is defined as the insertion direction, and the insertion direction is parallel to the axis of the support insulator where the inserted conductor is located. In this embodiment, the second connecting conductor 4 is inserted into the insertion interface 8 along the axis direction of the pot-type insulator 12 to contact the conductive fingers 9 to achieve conduction.

[0039] In this embodiment, the connecting hole 6 is specifically a threaded hole, the fastener 7 is specifically a bolt, and the conductive finger 9 is an annular finger.

[0040] As Figure 2As shown, a ring platform 10 is further provided on the inner wall of the intermediate conductor 2. The ring platform 10 extends radially inward along the intermediate conductor 2. The setting of the ring platform 10 can stop and limit the second connecting conductor 4 when the second connecting conductor 4 is inserted into the intermediate conductor 2.

[0041] Preferably, the two-way bent cylinder 1 in this embodiment is specifically L-shaped, that is, the included angle between the two ends of the cylinder is 90°; the intermediate conductor 2 is also L-shaped, and the included angle between its two ends is 90°. In other embodiments, the specific shapes of the two-way bent cylinder 1 and the intermediate conductor 2 can be adaptively changed according to the actual layout requirements of the two-way turning busbar in the GIS. The included angle between its two ends can be an obtuse angle or an acute angle.

[0042] Preferably, the operation hole 11 in this embodiment is arranged on the inner side of the intermediate conductor in the bending direction close to the two-way bent cylinder. In other embodiments, the operation hole 11 can also be arranged on other side walls of the intermediate conductor, as long as the installation requirements of the fastener 7 can be met.

[0043] Preferably, a hem 13 that bends radially inward of the cylinder is provided at the cylinder mouth of the cylinder. The pot-type insulator is fixed on the hem 13 at the cylinder mouth by using a fastener. A sealing ring 14 is also provided between the pot-type insulator 12 and the hem 13, so as to improve the insulation and sealing performance of the overall busbar.

[0044] Preferably, in this embodiment, the support insulator is specifically a pot-type insulator 12. In other embodiments, the support insulator can also be other shapes, such as a disc-type insulator, etc., as long as it can stably support other electrical components installed above the busbar.

[0045] When installing the busbar, the first connecting conductor 3 and the second connecting conductor 4 are respectively connected to the two pot-type insulators 12, and then the intermediate conductor 2 is fixedly connected to the first connecting conductor 3 through the connecting end plate 5 provided on the intermediate conductor 2 by bolts. Then, the pot-type insulator 12 fixedly connected to the first connecting conductor 3 is fixed at the cylinder mouth of the busbar cylinder, and then the second connecting conductor 4 that has been connected to the pot-type insulator 12 is inserted into the intermediate conductor 2 so that the intermediate conductor 2 and the second connecting conductor 4 can be conductively connected. Finally, the pot-type insulator 12 fixedly connected to the second connecting conductor 4 is connected and fixed to the busbar cylinder, and finally the assembly of the two-way turning busbar with double pot-type insulators is completed.

[0046] Based on the above technical concept, an embodiment of the GIS described in the present invention is:

[0047] GIS, including a two-way turning busbar, the specific structure of the two-way turning busbar is the same as that of the two-way turning busbar in the embodiment of the two-way turning busbar introduced above, and will not be elaborated here.

[0048] It should be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods.

[0049] In addition, any combination can be made among the various different embodiments of the present utility model as long as it does not violate the idea of the present utility model, and it should equally be regarded as the content disclosed by the present utility model.

[0050] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. The scope of patent protection of the present utility model is subject to the claims. All equivalent structural changes made by using the description and drawings of the present utility model should equally be included in the protection scope of the present utility model.

Claims

1. A two-way corner busbar, characterized in that: It includes a two-way bent cylinder body and a conductor assembly arranged in the two-way bent cylinder body. Support insulators are provided at both cylinder openings of the two-way bent cylinder body. The conductor assembly includes a first connecting conductor, a second connecting conductor, and an intermediate conductor. One ends of the first connecting conductor and the second connecting conductor are fixedly connected to the corresponding support insulators respectively. One end of the intermediate conductor is fixedly connected to one of the first connecting conductor and the second connecting conductor, and the other end is inserted into the other of the first connecting conductor and the second connecting conductor, and the insertion direction is parallel to the axis of the support insulator where the inserted conductor is located.

2. The two-way corner bus bar according to claim 1 is characterized in that: The intermediate conductor is a hollow conductor, and a connection end plate for connecting the corresponding conductor is provided at one end thereof. Connection holes are provided on the connection end plate and are fixedly connected to the corresponding conductor through fasteners inserted through the connection holes.

3. A two-way corner bus bar according to claim 2, characterized in that: An operation hole is provided on the side wall of one end of the intermediate conductor close to the connection end plate for fastening the fastener.

4. A two-way corner bus bar according to claim 3, characterized in that: The operation hole is provided on the side of the intermediate conductor close to the inner side in the bending direction of the two-way bent cylinder body.

5. A two-way corner bus bar according to claim 1, characterized in that: An insertion port is provided at one end of the intermediate conductor inserted into the corresponding conductor, and conductive finger contacts are provided in the insertion port.

6. The two-way corner bus bar according to claim 5, characterized in that: The conductive finger contacts are annular finger contacts, and a plurality of them are arranged along the insertion direction.

7. A two-way corner bus bar according to claim 1, characterized in that: The intermediate conductor is an L-shaped conductor, and the included angle between its two ends is 90°.

8. A two-way corner bus bar according to claim 1 or 7, characterized in that: The two-way bent cylinder body is an L-shaped cylinder body, and the included angle between its two ports is 90°.

9. A two-way corner bus bar according to claim 1, characterized in that: The support insulator is a pot-type insulator.

10. A GIS, comprising a two-way corner busbar, characterized in that: The two-way corner busbar is the two-way corner busbar according to any one of claims 1-9.

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