Top outlet switchgear

Abstract

The utility model provides a kind of upper outgoing line formula cubical switchboard, including support frame, and each corresponding cable drum, left air chamber, right air chamber and busbar cylinder, busbar cylinder is above right air chamber, left air chamber and right air chamber are arranged side by side and are interconnected, support frame is used to support left air chamber and right air chamber, vacuum interrupter is provided in right air chamber, vacuum interrupter is connected with the component in busbar cylinder, cable drum, left air chamber, right air chamber and busbar cylinder are filled with insulating gas;Cable drum is above left air chamber and is communicated with left air chamber, at least one outgoing line bushing is provided in the top of cable drum, copper bar is located in left air chamber, copper bar is connected to outgoing line bushing and vacuum interrupter.

Description

Technical Field

[0001] This utility model relates to the field of switch cabinets, and in particular to a top-outlet switch cabinet. Background Technology

[0002] Switchgear is an important component of power systems. Gas-insulated switchgear is widely used due to its advantages such as small size, light weight, good safety, high reliability, and ability to operate in harsh environments.

[0003] To connect to customer equipment, gas-insulated switchgear requires outgoing cable locations. Typically, gas-insulated switchgear has top-outgoing and bottom-outgoing cable configurations. How to accommodate top-outgoing cables for high-current switchgear has become a pressing issue. Utility Model Content

[0004] In view of this, the present invention proposes a top-outlet switchgear, including a support frame, and each corresponding cable drum, left air chamber, right air chamber and busbar drum. The busbar drum is located above the right air chamber. The left air chamber and the right air chamber are arranged side by side and communicate with each other. The support frame is used to support the left air chamber and the right air chamber. A vacuum interrupter is provided in the right air chamber. The vacuum interrupter is connected to the components in the busbar drum. The cable drum, left air chamber, right air chamber and busbar drum are all filled with insulating gas.

[0005] The cable drum is located above and connected to the left air chamber. At least one outlet sleeve is provided at the top of the cable drum. The copper rod is located in the left air chamber and is connected to the outlet sleeve and the vacuum interrupter.

[0006] The top-outgoing switchgear is achieved by setting an outgoing bushing on the top of the cable drum, and the copper rod is electrically connected to the outgoing bushing, which further enables the top-outgoing switchgear to be used in scenarios with larger currents to meet customer needs.

[0007] Optionally, in the top-outgoing switchgear described above, the outgoing bushing is located directly above the left air chamber. This results in a smaller overall size of the switchgear.

[0008] Optionally, the top-outgoing switchgear described above may also include an explosion-proof cover located at the bottom of the left or right gas chamber. Positioning the explosion-proof cover at the bottom of the left or right gas chamber ensures that the gas flow is directed towards the ground, preventing injury to nearby personnel.

[0009] According to the top-outgoing switchgear described above, optionally, both the left and right air chambers are tubular cylinders. The left air chamber includes an upper left cylinder and a lower left cylinder, and the right air chamber includes a circuit breaker cylinder and a lower right cylinder. The upper left cylinder is connected to both the cable cylinder and the lower left cylinder, and the circuit breaker cylinder is connected to the lower right cylinder. The lower left and lower right cylinders are integrally formed and H-shaped. The integral forming of the lower left and lower right cylinders reduces assembly and splicing, lowering the risk of air leakage.

[0010] Optionally, according to the top-outgoing switchgear described above, the cable drum is provided with multiple outgoing sleeves, and the cable drum also includes a supporting conductive plate, with each outgoing sleeve fixed to the supporting conductive plate, and the copper rod connected to the supporting conductive plate.

[0011] As described above, in the top-outgoing switchgear, optionally, at least two of the multiple outgoing bushings are of different models. This allows users to select the appropriate outgoing bushing according to their actual needs, satisfying diverse requirements.

[0012] Optionally, in the top-outgoing switchgear described above, the copper rod has a silver layer on its outer side near the supporting conductive plate. The presence of this silver layer can reduce resistance and prevent oxidation.

[0013] Optionally, the top-outgoing switchgear described above may also include a toothed ceramic bushing located at the connection between the right air chamber and the busbar. This toothed ceramic bushing allows for better heat dissipation.

[0014] According to the top-outgoing switchgear described above, optionally, the portion of the support frame located between the left and right air chambers is made of a chromium-nickel alloy; and / or

[0015] The portion of the support frame away from the left and right air chambers is made of carbon steel.

[0016] Different materials are used for different parts of the support frame to meet the requirements while minimizing costs.

[0017] Optionally, the top-outgoing switchgear described above may also include a current transformer, which is fitted onto the outer wall of the left air chamber. This current transformer allows the top-outgoing switchgear to monitor the real-time current. Attached Figure Description

[0018] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the above and other features and advantages of the present invention, in which:

[0019] Figure 1This is a structural schematic diagram of the top-outgoing switchgear according to this utility model from one angle.

[0020] Figure 2 This is a structural schematic diagram of the top-outgoing switchgear according to this utility model from another angle.

[0021] The reference numerals in the attached figures are as follows:

[0022] 1-Supporting Frame

[0023] 11-Part 1

[0024] 12-Part Two

[0025] 2-Cable cylinder

[0026] 21-Outgoing sleeve

[0027] 22-Supporting conductive plate

[0028] 221-Contact Plate Support

[0029] 3-Left chamber

[0030] 31-Upper Left Cylinder

[0031] 32-Lower left cylinder

[0032] 4-Right air chamber

[0033] 41-Upper Left Cylinder

[0034] 42-Lower left cylinder

[0035] 5-Busbar Reel

[0036] 6-Explosion-proof cover plate

[0037] 7-toothed ceramic sleeve

[0038] 8-Copper Rod

[0039] 81-Silver Layer

[0040] 91-Vacuum interrupter

[0041] 92-Three-layer copper busbar Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this utility model clearer, the following embodiments are provided to further illustrate this utility model in detail. The nouns and pronouns referring to "person" in this patent application are not limited to specific genders.

[0043] This invention provides a top-outgoing switchgear, where cables can extend from the top of the switchgear and connect to equipment at the customer's location. The top-outgoing switchgear in this invention is a gas-insulated switchgear with a high current rating, such as 3150A; therefore, the corresponding components need to meet requirements to handle such a large current.

[0044] like Figure 1 and Figure 2 As shown, the top-outgoing switchgear has three phases, and each phase corresponds to a cable drum 2, a left air chamber 3, a right air chamber 4, and a busbar drum 5. Figure 1 The diagram shows a schematic of the top-outgoing switchgear at one angle. Figure 2 A schematic diagram of the top-outgoing switchgear is shown from another angle.

[0045] The busbar drum 5 is located above the right gas chamber 4. Normally, the busbar drum 5 and the right gas chamber 4 are not connected. The left gas chamber 3 and the right gas chamber 4 are arranged side-by-side and interconnected. The support frame 1 supports the left gas chamber 3 and the right gas chamber 4. A vacuum interrupter 91 is installed in the right gas chamber 4, and the vacuum interrupter 91 is connected to components (not shown in the figure) in the busbar drum 5. These components include, for example, a disconnecting switch and a busbar. The cable drum 2, left gas chamber 3, right gas chamber 4, and busbar drum 5 are all filled with insulating gas. Specifically, the circuit breaker here can be a three-position switch. The right gas chamber 4 contains the vacuum interrupter 91, and the disconnecting switch is connected to both the busbar and the vacuum interrupter 91. How the disconnecting switch, busbar, and vacuum interrupter 91 operate is existing technology and will not be elaborated here. The insulating gas here can be sulfur hexafluoride or a clean gas, depending on actual needs, and will not be elaborated here. As an example, for instance... Figure 1 and Figure 2 As shown, the support frame 1 supports the left air chamber 3 and the right air chamber 4, and in turn supports other components connected to the left air chamber 3 and the right air chamber 4.

[0046] The cable drum 2 of the top-outgoing switchgear is located above and connected to the left air chamber 3. At least one outgoing sleeve 21 is installed at the top of the cable drum 2. A copper rod 8 is located in the left air chamber 3, and the copper rod 8 is electrically connected to the outgoing sleeve 21 and the vacuum interrupter 91. For example... Figure 1 and Figure 2 As shown, the cable drum 2 is located directly above and connected to the left air chamber 3. The top-mounted outlet bushing 21 allows conductors such as cables or copper busbars to extend from the top of the switchgear, achieving top-outlet wiring. Furthermore, using a copper rod 8 to connect the outlet bushing 21 and the vacuum interrupter 91 not only provides sufficient current carrying capacity and can withstand larger currents, but also reduces assembly difficulty. The diameter and length of the copper rod 8 can be set according to actual needs to meet current rating requirements.

[0047] As an example, the copper rod 8 can be directly connected to the outlet sleeve 21, or it can be indirectly connected to the outlet sleeve 21 through other conductive components, such as... Figure 1 and Figure 2 The copper rod can be connected to the supporting conductive plate 22 via an interference fit, making installation very convenient. Similarly, the copper rod 8 can be indirectly connected to the vacuum interrupter 91 via other conductive components, such as... Figure 1 and Figure 2 As shown, a vertically arranged copper rod 8 is connected to a horizontally arranged conductive element, which is connected to the stationary contact rod of the vacuum interrupter 91 to achieve an indirect connection. This horizontally arranged conductive element can be, for example,... Figure 1 and Figure 2 The three-layer copper busbar 92 shown can also be a copper rod 8; the specific dimensions can be selected according to actual needs, which will not be elaborated here. When using the three-layer copper busbar 92, such as... Figure 1 and Figure 2 As shown, the end of the copper rod 8 away from the cable drum 2 is inserted through one end of the three-layer copper busbar 92, and the other end of the three-layer copper busbar 92 is connected to the stationary contact rod of the vacuum interrupter 91.

[0048] The outgoing bushing 21 is located directly above the left air chamber 3, which makes the overall size of the switch cabinet smaller.

[0049] In addition, multiple outlet sleeves 21 can be provided here, and their models can be different or all the same, or some can be the same and some different. In this way, users can choose which outlet sleeve 21 to use according to their actual needs, which has strong adaptability and meets different customer needs.

[0050] Figure 1 The left and right parts can be mirrored and interchanged to meet actual needs, and the specific arrangement can be based on the customer's requirements.

[0051] According to the above example, the top-outgoing switchgear is realized by setting the outgoing sleeve 21 on the top of the cable drum 2, and the copper rod 8 is electrically connected to the outgoing sleeve 21, which further enables the top-outgoing switchgear to be applied to scenarios with larger currents to meet customer needs.

[0052] As an example, the top-outgoing switchgear also includes an explosion-proof cover 6, located at the bottom of the left gas chamber 3 or the right gas chamber 4. When the gas pressure in the switchgear reaches a certain level, the explosion-proof cover 6 can be forced open to relieve pressure and improve safety. Placing the explosion-proof cover 6 at the bottom of the left gas chamber 3 or the right gas chamber 4 ensures that the gas flows towards the ground, preventing injury to nearby personnel. Figure 1 and Figure 2The diagram shows the structure of the explosion-proof cover 6 located at the bottom of the left air chamber 3.

[0053] As an example, such as Figure 1 and Figure 2 As shown, both the left air chamber 3 and the right air chamber 4 are tubular cylinders. The left air chamber 3 includes an upper left cylinder 31 and a lower left cylinder 32, and the right air chamber 4 includes a circuit breaker cylinder 41 and a lower right cylinder 42. The upper left cylinder 31 is connected to both the cable cylinder 2 and the lower left cylinder 32, and the circuit breaker cylinder 41 is connected to the lower right cylinder 42. The lower left cylinder 32 and the lower right cylinder 42 are integrally formed and are H-shaped. The cylinders of both the left air chamber 3 and the right air chamber 4 are made of aluminum, which has a lower cost. The presence of the upper left cylinder 31 and the circuit breaker cylinder 41 facilitates assembly. The integral formation of the lower left cylinder 32 and the lower right cylinder 42 reduces assembly splicing and lowers the risk of air leakage. More specifically, the cable cylinder 2 is located directly above and connected to the upper left cylinder 31, and the busbar cylinder 5 is located above the circuit breaker cylinder 41.

[0054] As another example, the cable drum 2 is provided with multiple sleeves 21, and the cable drum 2 also includes a supporting conductive plate 22. Each outgoing sleeve 21 is fixed to the supporting conductive plate 22, and the copper rod 8 is connected to the supporting conductive plate 22. These multiple sleeves 21 can realize multiple outgoing lines, thereby enabling one switch cabinet to connect multiple devices. Of course, at least two outgoing sleeves 21 are of different models. For example, each outgoing sleeve 21 may be of a different model, or some outgoing sleeves 21 may be of the same model, while others may be of different models. This allows users to select the appropriate outgoing sleeves 21 according to their actual needs, satisfying different requirements.

[0055] As an example, the copper rod 8 has a silver layer 81 on its outer side near the supporting conductive plate 22. The presence of this silver layer 81 reduces resistance and prevents oxidation. The silver layer 81 can be applied to the outer wall of the copper rod 8 using an electroplating process. As another example, the copper rod 8 is fixed to the supporting conductive plate 22 by an interference fit. For instance, the supporting conductive plate 22 has a contact plate support 221 on the side facing the copper rod 8, and the portion with the silver layer 81 is inserted into the contact plate support 221. Contact lamellae are fitted onto the outer side of the portion of the copper rod 8 with the silver layer 81, thus allowing it to be fixed to the contact plate support 221 by an interference fit. The contact lamellae are shaped like fish scales and are also called fish scale plates or fish scale retaining rings.

[0056] As an example, the top-outgoing switchgear also includes a toothed ceramic bushing 7 located at the connection between the right gas chamber 4 and the busbar 5. This toothed ceramic bushing 7 provides better heat dissipation. Furthermore, the vacuum interrupter 91 or other components of the circuit breaker requiring electrical connection can be fixed and installed within the toothed ceramic bushing 7. Normally, the toothed ceramic bushing 7 isolates the gas between the busbar 5 and the right gas chamber 4, meaning they are not connected. However, if required by the customer, the gas between the busbar 5 and the right gas chamber 4 can be made connected according to actual needs.

[0057] Optionally, different parts of the support frame 1 can be made of different materials. For example, the first part 11 of the support frame 1 located between the left air chamber 3 and the right air chamber 4 is made of chromium-nickel alloy; and / or the second part 12 of the support frame 1 located away from the left air chamber 3 and the right air chamber 4 is made of carbon steel. Carbon steel is a lower-cost and more robust material. Since there are conductive components, such as triple-layer copper busbars 92, in the left air chamber 3 and the right air chamber 4, which generate induced current, the frame part located between the left air chamber 3 and the right air chamber 4 is prone to overheating. Therefore, if this part is made of chromium-nickel alloy, it can avoid electromagnetic induction and is less prone to overheating. However, chromium-nickel alloy is more expensive. Therefore, using different materials for different parts of the support frame 1 can meet the requirements while minimizing costs.

[0058] As an example, the top-outgoing switchgear also includes a current transformer (not shown in the figure), which can be fitted onto the outer wall of the left air chamber 3, so that the current transformer can monitor the real-time current of the top-outgoing switchgear.

[0059] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A top-outlet switchgear, comprising a support frame (1), and each corresponding cable drum (2), left air chamber (3), right air chamber (4), and busbar drum (5), wherein the busbar drum (5) is located above the right air chamber (4), the left air chamber (3) and the right air chamber (4) are arranged side by side and interconnected, the support frame (1) is used to support the left air chamber (3) and the right air chamber (4), a vacuum interrupter (91) is provided in the right air chamber (4), the vacuum interrupter (91) is connected to the components in the busbar drum (5), and the cable drum (2), left air chamber (3), right air chamber (4) and busbar drum (5) are all filled with insulating gas; Its features are, The cable drum (2) is located above and connected to the left air chamber (3). At least one outlet sleeve (21) is provided at the top of the cable drum (2). The copper rod (8) is located in the left air chamber (3) and is connected to the outlet sleeve (21) and the vacuum interrupter (91).

2. The top-outgoing switchgear according to claim 1, characterized in that, The outlet sleeve (21) is located directly above the left air chamber (3).

3. The top-outgoing switchgear according to claim 1, characterized in that, Also includes: An explosion-proof cover (6) is located at the bottom of the left air chamber (3) or the right air chamber (4).

4. The top-outgoing switchgear according to claim 1, characterized in that, The left air chamber (3) and the right air chamber (4) are both tubular cylinders. The left air chamber (3) includes an upper left cylinder (31) and a lower left cylinder (32). The right air chamber (4) includes a circuit breaker cylinder (41) and a lower right cylinder (42). The upper left cylinder (31) is connected to the cable cylinder (2) and the lower left cylinder (32) respectively. The circuit breaker cylinder (41) is connected to the lower right cylinder (42). The lower left cylinder (32) and the lower right cylinder (42) are integrally formed and are H-shaped.

5. The top-outgoing switchgear according to claim 1, characterized in that, The cable drum (2) is provided with multiple outlet sleeves (21), and the cable drum (2) also includes a supporting conductive plate (22). Each outlet sleeve (21) is fixed on the supporting conductive plate (22), and the copper rod (8) is connected to the supporting conductive plate (22).

6. The top-outgoing switchgear according to claim 5, characterized in that, At least two of the multiple cable outlet sleeves (21) are of different models.

7. The top-outgoing switchgear according to claim 5, characterized in that, The copper rod (8) has a silver layer (81) on the outer side near the supporting conductive plate (22).

8. The top-outgoing switchgear according to claim 1, characterized in that, Also includes: A toothed ceramic sleeve (7) is located at the connection between the right air chamber (4) and the busbar cylinder (5).

9. The top-outgoing switchgear according to claim 1, characterized in that, The material of the portion of the support frame (1) located between the left air chamber (3) and the right air chamber (4) is a chromium-nickel alloy; and / or The material of the part of the support frame (1) away from the left air chamber (3) and the right air chamber (4) is carbon steel.

10. The top-outgoing switchgear according to any one of claims 1-9, characterized in that, Also includes: A current transformer is fitted onto the outer wall of the left air chamber (3).

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