Insulated bus switch cabinet structure with four buses

Abstract

The utility model discloses an insulated bus switch cabinet structure with four buses, which comprises a cabinet body, a first bus air chamber, a circuit breaker air chamber, a cable chamber and an instrument chamber are arranged in the cabinet body, and the insulated bus switch cabinet structure also comprises a second bus air chamber arranged on the cabinet body; the second bus air chamber is internally provided with two connecting horizontal buses, a partition plate is fixed in the second bus air chamber, and the connecting horizontal buses are located on the two sides of the partition plate. According to the invention, the problem that an overhead bus bridge needs to be laid between switch cabinets when the switch cabinets with incoming and outgoing lines at the top are connected is solved; the horizontal bus is fixedly connected in the second bus air chamber, the switch cabinet is connected by connecting the horizontal bus, laying of an overhead bus bridge is avoided, the second bus chamber is arranged in the cabinet body, the overall size can be reduced, the switch cabinet air chamber is filled with insulating gas, and the safety of a line is improved by utilizing the insulating gas.

Description

Technical Field

[0001] The present invention relates to the technical field of switch cabinets, in particular to an insulated busbar switch cabinet structure with four busbars. Background Art

[0002] The switch cabinet is an electrical equipment. The external line of the switch cabinet first enters the main control switch inside the cabinet, and then enters the branch control switch through the main bus of the switch cabinet. Each branch is set according to its needs.

[0003] In the field of traction power supply for conventional railways, 27.5kV switchgear usually adopts indoor air-insulated switchgear. This type of switchgear has a primary part exposed to the air, and the connection between sections is provided with a busbar bridge for busbar connection between bus sections. The switchgear in the substation occupies a large space and requires regular maintenance. The connection bridge is set on the top of the switchgear, which occupies a large space, is inconvenient to maintain, and increases costs. In addition, the connection method of the overhead busbar bridge is not safe. Therefore, a four-busbar insulated gas switchgear structure is designed to facilitate the connection between switchgears and avoid laying overhead busbar bridges. At the same time, the insulating gas is used to reduce the size of the switchgear. Since the primary part of the switchgear is sealed in the switchgear gas chamber and does not require maintenance, the maintenance workload is reduced, and the safety of the line is also improved. Summary of the Invention

[0004] The object of the present invention is to provide an insulated busbar switchgear structure with four busbars, thereby avoiding the use of overhead lines to connect the switchgears.

[0005] The present invention provides the following technical solution: an insulated busbar switchgear structure with four busbars, comprising a cabinet body, wherein the cabinet body comprises a first busbar gas chamber, a circuit breaker gas chamber, a cable chamber and an instrument chamber, and further comprises a second busbar gas chamber arranged on the cabinet body; two connecting horizontal busbars are arranged in the second busbar gas chamber.

[0006] In order to install the connecting horizontal busbar, a partition is fixed in the second busbar air chamber, and the connecting horizontal busbar is located on both sides of the partition.

[0007] In one embodiment, the second busbar chamber is located above the first busbar chamber, and the second busbar chamber is connected to the upper end of the cabinet, and the two connecting horizontal busbars of the second busbar chamber are distributed up and down.

[0008] In one embodiment, the second busbar chamber is located below the first busbar chamber, and the second busbar chamber is connected to the interior of the cabinet, and the two connecting horizontal busbars of the second busbar chamber are distributed up and down.

[0009] In one embodiment, the second busbar chamber is located below the first busbar chamber, and the second busbar chamber is connected to the interior of the cabinet, and the two connecting horizontal busbars of the second busbar chamber are horizontally distributed.

[0010] In order to control the working state of the circuit breaker, busbars distributed adjacent to each other in the upper and lower directions are fixed in the first busbar air chamber, a three-position switch is fixed on the inner wall of the first busbar air chamber on one side of the busbar, a circuit breaker is fixed on the inner wall of the circuit breaker air chamber, the upper pile head of the circuit breaker is connected to the three-position switch, and an operating mechanism is provided on the other side of the circuit breaker, and the operating mechanism is located at the upper end of the instrument chamber.

[0011] In order to protect the internal lines, a current transformer is also fixed on the inner wall of the circuit breaker air chamber. One end of the current transformer is connected to the lower pile head of the circuit breaker through a copper busbar, and the other end of the current transformer is connected to the inner cone bushing for connecting the cable.

[0012] In order to protect the lines in the cable room, the cable room includes a primary cable, a voltage transformer and a primary main component of a lightning arrester. The current transformer is connected to the primary cable through an inner cone bushing.

[0013] In order to control the density of the internal insulating gas, a density controller is installed at the upper end of the cabinet, and the density controller is respectively connected to the first busbar gas chamber, the second busbar gas chamber and the circuit breaker gas chamber.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: by setting up a second busbar air chamber, fixing the horizontal busbar in the second busbar air chamber, and connecting the switch cabinets using the connected horizontal busbar, the laying of an overhead busbar bridge is avoided. At the same time, the second busbar air chamber is filled with insulating gas, and the insulating gas is used to improve the safety of the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a structural diagram of embodiment 1 of the present invention;

[0017] Figure 2 is a structural diagram of embodiment 2 of the present invention;

[0018] Figure 3 is a schematic structural diagram of embodiment 3 of the present invention;

[0019] In the figure: 1. First busbar gas chamber; 2. Operating mechanism; 3. Circuit breaker; 4. Instrument room; 5. Cable room; 6. Current transformer; 7. Copper busbar; 8. Busbar; 9. Three-position switch; 10. Primary cable; 11. Second busbar gas chamber; 111. Connecting horizontal busbar; 112. Partition; 12. Density controller. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1

[0022] See also Figure 1 The present invention provides a technical solution: an insulated busbar switchgear structure with four busbars, including a cabinet body, which includes a first busbar gas chamber 1, a circuit breaker gas chamber, a cable chamber 5 and an instrument chamber 4, and also includes a second busbar gas chamber 11 arranged on the cabinet body; two connecting horizontal busbars 111 are provided in the second busbar gas chamber 11, and the switchgears at different positions are connected by connecting the horizontal busbars 111.

[0023] A partition 112 is fixed in the second busbar air chamber 11 , and the connecting horizontal busbars 111 are located on both sides of the partition 112 , and the connecting horizontal busbars 111 are fixed by the partition 112 .

[0024] The second busbar gas chamber 11 is located above the first busbar gas chamber 1, and the second busbar gas chamber 11 is connected to the upper end of the cabinet. The two connecting horizontal busbars 111 of the second busbar gas chamber 11 are distributed up and down, and the switch cabinets at different positions are connected through the connecting horizontal busbars 111 distributed up and down.

[0025] The first busbar 8 chamber 1 has busbars 8 fixed therein, adjacent to each other in the upper and lower directions. A three-position switch 9 is fixed on the inner wall of the first busbar chamber 1 on one side of the busbar 8. A circuit breaker 3 is fixed on the inner wall of the circuit breaker chamber. One end of the circuit breaker 3 is connected to the three-position switch 9, and the other end of the circuit breaker 3 is connected to the operating mechanism 2. The operating mechanism 2 is located at the upper end of the instrument chamber 4. The movement of the operating mechanism 2 drives the movement of the three-position switch 9, thereby realizing the connection with the circuit breaker 3 and further controlling the working state of the circuit breaker 3 in the switch cabinet.

[0026] A current transformer 6 is also fixed on the inner wall of the circuit breaker chamber. One end of the current transformer 6 is connected to the lower pile head of the circuit breaker 3 through a copper busbar 7, and the other end of the current transformer 6 is connected to the inner cone bushing for connecting the cable. The current transformer 6 is used to provide current protection for the lines or busbars within its protection range.

[0027] The cable room 5 includes primary main components such as primary cable 10, voltage transformer 6 and lightning arrester. The current transformer 6 is connected to the primary cable 10 through an inner cone bushing, and the primary cable 10 is used to protect the lines or busbars within its protection range.

[0028] A density controller 12 is installed at the upper end of the cabinet. There are multiple density controllers 12, which are respectively connected to the first busbar gas chamber 1, the second busbar gas chamber 11 and the circuit breaker gas chamber, so as to control the density of the insulating gas in the gas chamber and ensure the safety of the switch cabinet.

[0029] Example 2

[0030] like Figure 2 As shown, in this embodiment, other structures are the same as those in the first embodiment. The difference is that the second busbar chamber 11 is located below the first busbar chamber 1, and the second busbar chamber 11 is connected to the inside of the cabinet. The two connecting horizontal busbars 111 of the second busbar chamber 11 are distributed up and down. Compared with the first embodiment, the overall volume is reduced and the internal structure is more compact.

[0031] Example 3

[0032] like Figure 3 As shown, in this embodiment, other structures are the same as those in the first embodiment. The difference is that the second busbar chamber 11 is located below the first busbar chamber 1, and the second busbar chamber 11 is connected to the inside of the cabinet. The two connecting horizontal busbars 111 of the second busbar chamber 11 are horizontally distributed left and right. Compared with the second embodiment, the volume of the second busbar chamber 11 is reduced, and the space inside the switch cabinet is further expanded, so that the space for internal installation and wiring is larger.

[0033] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An insulated busbar switchgear structure with four busbars, comprising a cabinet body, wherein the cabinet body comprises a first busbar gas chamber, a circuit breaker gas chamber, a cable chamber, and an instrument chamber, characterized in that: It also includes a second busbar air chamber arranged on the cabinet body; the first busbar air chamber and the second busbar air chamber are distributed up and down, and two connecting horizontal busbars are provided in the second busbar air chamber, and the two connecting horizontal busbars are respectively connected to the switch cabinet on the other side.

2. The insulated busbar switchgear structure with four busbars according to claim 1, characterized in that: A partition is fixed in the second busbar air chamber, and the connecting horizontal busbars are located on both sides of the partition.

3. The insulated busbar switchgear structure with four busbars according to claim 2, characterized in that: The second busbar air chamber is located above the first busbar air chamber, and the second busbar air chamber is connected to the upper end of the cabinet, and the two connecting horizontal busbars of the second busbar air chamber are distributed up and down.

4. The insulated busbar switchgear structure with four busbars according to claim 2, characterized in that: The second busbar air chamber is located below the first busbar air chamber, and the second busbar air chamber is connected to the interior of the cabinet. The two connecting horizontal busbars of the second busbar air chamber are distributed up and down.

5. The insulated busbar switchgear structure with four busbars according to claim 2, characterized in that: The second busbar air chamber is located below the first busbar air chamber, and the second busbar air chamber is connected to the interior of the cabinet. The two connecting horizontal busbars of the second busbar air chamber are horizontally distributed.

6. The insulated busbar switchgear structure with four busbars according to any one of claims 1 to 5, characterized in that: Busbars are fixed in the first busbar air chamber and are distributed adjacent to each other in the upper and lower directions. A three-position switch is fixed on the inner wall of the first busbar air chamber on one side of the busbar. A circuit breaker is fixed on the inner wall of the circuit breaker air chamber. The upper pile head of the circuit breaker is connected to the three-position switch. An operating mechanism is provided on the other side of the circuit breaker, and the operating mechanism is located at the upper end of the instrument chamber.

7. The insulated busbar switchgear structure with four busbars according to claim 6, characterized in that: A current transformer is also fixed on the inner wall of the circuit breaker air chamber. One end of the current transformer is connected to the lower pile head of the circuit breaker through a copper busbar, and the other end of the current transformer is connected to the inner cone bushing for connecting the cable.

8. The insulated busbar switchgear structure with four busbars according to claim 7, characterized in that: The cable room includes a primary cable, a voltage transformer and a lightning arrester, and the current transformer is connected to the primary cable through an inner cone bushing.

9. The insulated busbar switchgear structure with four busbars according to claim 8, characterized in that: A density controller is installed at the upper end of the cabinet, and the density controller is connected to the first busbar gas chamber, the second busbar gas chamber and the circuit breaker gas chamber respectively.

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