Switch device

Abstract

The invention provides switch equipment which comprises a cabinet body, an upper grounding isolation knife, a lower grounding isolation knife, a current transformer, a vacuum circuit breaker, an operation interlocking mechanism, a lightning arrester, a supporting insulator and a cable mounting column. The interior of the cabinet body is divided into a bus isolation chamber, a circuit breaker isolation chamber, a cable compartment and an instrument compartment. The bus isolation chamber is internally provided with an upper grounding isolation knife, and the upper grounding isolation knife is in linkage with the lower grounding isolation knife through an operation interlocking mechanism. A current transformer, a vacuum circuit breaker and an operation interlocking mechanism are arranged in the circuit breaker isolation chamber, and the vacuum circuit breaker is arranged below the upper grounding isolation knife and is communicated with the current transformer; a lower grounding isolation knife, a lightning arrester, a post insulator and a cable mounting column are mounted in the cable compartment, one end of the lightning arrester suspended in the cable compartment is connected with the cable mounting column through a cable, and the other end of the lightning arrester is connected with the post insulator mounted on the side surface of the cable compartment; and the other end of the lower grounding isolation knife is connected with the post insulator.

Description

Technical Field

[0001] The present disclosure relates to the field of switch cabinets, and in particular to a switch device. Background Art

[0002] Switchgear is a device that transmits and distributes electricity after the power grid is stepped down. It is widely used in different places, such as high-rise buildings, residential areas, industrial and mining enterprises, construction sites, etc. It is also suitable for power systems such as box-type substations.

[0003] The metal-enclosed switchgear of the prior art, as shown in Utility Model Patent No. 201320237937.1 of the People's Republic of China, has an unreasonable internal layout and no obvious separation between the chambers, which easily causes disorderly lines, inconvenient maintenance, and poor safety. Summary of the invention

[0004] The present disclosure provides a switch device to solve the problems in the related art.

[0005] A first aspect of the present disclosure provides a switch device, comprising:

[0006] It includes a cabinet, an upper grounding isolating switch, a lower grounding isolating switch, a current transformer, a vacuum circuit breaker, an operation interlocking mechanism, a lightning arrester, a support insulator and a cable installation column;

[0007] Wherein, the cabinet includes a main body, which is divided into a busbar isolation chamber, a circuit breaker isolation chamber, a cable compartment and an instrument compartment; the upper grounding isolation knife is installed in the busbar isolation chamber, and the upper grounding isolation knife is linked with the lower grounding isolation knife through the operation interlocking mechanism; the current transformer, the vacuum circuit breaker and the operation interlocking mechanism are installed in the circuit breaker isolation chamber, and the vacuum circuit breaker is installed below the upper grounding isolation knife and connected with the current transformer; the lower grounding isolation knife, the lightning arrester, the support insulator and the cable mounting column are installed in the cable compartment, the lightning arrester is suspended at one end of the cable compartment and connected to the cable mounting column through a cable, and the other end of the lightning arrester is connected to the support insulator installed on the side of the cable compartment; the other end of the lower grounding isolation knife is connected to the support insulator.

[0008] In one embodiment, the switch device further comprises: an LC compensation filter branch;

[0009] The LC compensation filter branch is arranged in the busbar isolation chamber, and the LC compensation filter branch is connected to the upper grounding isolation switch.

[0010] In one embodiment, the vacuum circuit breaker is disconnected from and connected to the LC compensation filter branch as the upper grounding isolation knife moves up and down.

[0011] In one embodiment, a plurality of heat dissipation holes are disposed on the main body of the cabinet.

[0012] In one embodiment, a cabinet door for closing the main body is disposed on the main body, and the cabinet door is hinged to the main body.

[0013] In one embodiment, the switch device further comprises a ground busbar;

[0014] The grounding busbar is arranged at the bottom of the cable compartment, and the grounding busbar is used to ground the switch device.

[0015] In one embodiment, the switch device further comprises a door grounding wire;

[0016] The door grounding wire is arranged at the bottom of the cable compartment, and the door grounding wire is used to ground the cabinet door.

[0017] In one embodiment, the cabinet further comprises a door lock, and the door lock is used to lock the cabinet and the cabinet door.

[0018] In one embodiment, the switch device further comprises a lifting ring; the lifting ring is arranged at the bottom of the body of the cabinet.

[0019] In one embodiment, the switch device further comprises a simulation disk; the simulation disk is arranged on the front side of the cable compartment, and the simulation disk is used to connect an external communication line.

[0020] In summary, the present disclosure proposes a switchgear, which includes a cabinet, an upper grounding isolating knife, a lower grounding isolating knife, a current transformer, a vacuum circuit breaker, an operation interlocking mechanism, a lightning arrester, a support insulator and a cable installation column; wherein the cabinet includes a main body, and the main body is divided into a busbar isolation chamber, a circuit breaker isolation chamber, a cable compartment and an instrument compartment; the upper grounding isolating knife is installed in the busbar isolation chamber, and the upper grounding isolating knife is linked with the lower grounding isolating knife through the operation interlocking mechanism; the circuit breaker isolation chamber is installed with The current transformer, the vacuum circuit breaker and the operation interlock mechanism, the vacuum circuit breaker is installed below the upper grounding isolation knife and is connected to the current transformer; the lower grounding isolation knife, the lightning arrester, the support insulator and the cable installation column are installed in the cable compartment, one end of the lightning arrester is suspended in the cable compartment and connected to the cable installation column through a cable, and the other end of the lightning arrester is connected to the support insulator installed on the side of the cable compartment; the other end of the lower grounding isolation knife is connected to the support insulator. 。

[0021] The switchgear provided by the present disclosure has a simple and compact structure, and divides the cabinet into independent rooms, thereby making the layout reasonable, facilitating orderly wiring, and facilitating subsequent maintenance.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the description are used to explain the principles of the present disclosure, and do not constitute improper limitations on the present disclosure.

[0024] Figure 1 A schematic diagram of the structure of a switch device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0025] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0026] Switchgear is a device that transmits and distributes electricity after the power grid is stepped down. It is widely used in different places, such as high-rise buildings, residential areas, industrial and mining enterprises, construction sites, etc. It is also suitable for power systems such as box-type substations.

[0027] The metal-enclosed switchgear of the prior art, as shown in Utility Model Patent No. 201320237937.1 of the People's Republic of China, has an unreasonable internal layout and no obvious separation between the chambers, which easily causes disorderly lines, inconvenient maintenance, and poor safety.

[0028] Therefore, in order to solve the above technical problems, it is necessary to provide a metal-enclosed switchgear with an improved structure to overcome the above defects in the prior art.

[0029] like Figure 1 As shown, the present disclosure provides a switch device, comprising:

[0030] It includes a cabinet 1, an upper grounding isolating switch 6, a lower grounding isolating switch 7, a current transformer 8, a vacuum circuit breaker 9, an operation interlocking mechanism 10, a lightning arrester 11, a support insulator 12 and a cable installation column 13;

[0031] The cabinet 1 includes a main body, which is divided into a busbar isolation chamber 2, a circuit breaker isolation chamber 3, a cable compartment 4 and an instrument compartment 5; the upper grounding isolation knife 6 is installed in the busbar isolation chamber 2, and the upper grounding isolation knife 6 is linked with the lower grounding isolation knife 7 through the operation interlocking mechanism 10; the current transformer 8, the vacuum circuit breaker 9 and the operation interlocking mechanism 10 are installed in the circuit breaker isolation chamber 3, and the vacuum circuit breaker 9 is installed below the upper grounding isolation knife 6 and is connected to the current transformer 8; the lower grounding isolation knife 7, the lightning arrester 11, the support insulator 12 and the cable mounting column 13 are installed in the cable compartment 4, the lightning arrester 11 is suspended at one end of the cable compartment 4 and connected to the cable mounting column 13 through a cable, and the other end of the lightning arrester 11 is connected to the support insulator 12 installed on the side of the cable compartment 4; the other end of the lower grounding isolation knife 7 is connected to the support insulator 12.

[0032] In one embodiment, the instrument compartment 5 is used to place various instruments for monitoring the switchgear.

[0033] In one embodiment, the upper grounding isolating switch 6, the current transformer 8, the vacuum circuit breaker 9, and the lower grounding isolating switch 7 can all provide protection for the safe operation of the switchgear.

[0034] In one embodiment, the switch device is convenient for transportation and installation.

[0035] In one embodiment, the switch device further comprises: an LC compensation filter branch 15;

[0036] The LC compensation filter branch 15 is arranged in the busbar isolation chamber 2 , and the LC compensation filter branch 15 is connected to the upper grounding isolation switch 6 .

[0037] In one embodiment, the transmission of reactive power in the power grid will cause network loss and voltage drop at the receiving end, which will greatly reduce the utilization rate of electric energy and seriously affect the power supply quality. Therefore, installing a reactive power compensation device at an appropriate location in the power grid is a necessary means to meet the reactive power demand of the power grid. Among them, the basic principle of reactive power compensation is: connect a device with a capacitive load and an inductive load in parallel in the same circuit, when the capacitive load releases energy, the inductive load absorbs energy; when the inductive load releases energy, the capacitive load absorbs energy, and energy is exchanged between the two loads.

[0038] In one embodiment, the LC compensation filter branch 15 can achieve the following technical effects:

[0039] First, reactive dynamic compensation can make the power factor meet the standard; it can save electric energy, reduce production costs, and reduce the electricity expenses of enterprises;

[0040] Second, it can solve the transformer output problem, improve the utilization rate of equipment (transformer, line), and reduce the system harmonic current by compensating reactive power and harmonic control;

[0041] Third, it can solve a series of hazards caused by harmonics. The low-voltage dynamic reactive power compensation filter device not only compensates for the fundamental reactive power of the system, but also filters out harmonics, thereby improving power supply safety and power quality.

[0042] In one embodiment, the vacuum circuit breaker 9 can be disconnected from and connected to the LC compensation filter branch 15 as the upper grounding isolation knife 6 moves up and down.

[0043] In one embodiment, a plurality of heat dissipation holes are disposed on the main body of the cabinet 1 .

[0044] In one embodiment, the heat dissipation hole facilitates heat dissipation of the switch device.

[0045] In one embodiment, a cabinet door for closing the main body is disposed on the main body, and the cabinet door is hinged to the main body.

[0046] In one embodiment, the switchgear further comprises: a ground busbar, a door grounding wire, a rear door interlocking mechanism, a simulation panel and a lifting ring 14;

[0047] The grounding busbar and the door grounding wire are arranged at the bottom of the cable compartment 4; the grounding busbar is used to ground the switch device, and the door grounding wire is used to ground the cabinet door.

[0048] The simulation disk is arranged on the front side of the cable compartment 4, and the simulation disk is used to connect the external communication line.

[0049] The hanging ring 14 is arranged on the top of the local part of the cabinet 1 .

[0050] In one embodiment, the cabinet 1 further comprises a door lock, and the door lock is used to lock the cabinet 1 and the cabinet door.

[0051] In one embodiment, the door lock can ensure the safe use of the switch device.

[0052] It should be noted that in the embodiments of the present disclosure, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A switch device, characterized in that: include: It includes a cabinet, an upper grounding isolating switch, a lower grounding isolating switch, a current transformer, a vacuum circuit breaker, an operation interlocking mechanism, a lightning arrester, a support insulator and a cable installation column; Wherein, the cabinet includes a main body, which is divided into a busbar isolation chamber, a circuit breaker isolation chamber, a cable compartment and an instrument compartment; the upper grounding isolation knife is installed in the busbar isolation chamber, and the upper grounding isolation knife is linked with the lower grounding isolation knife through the operation interlocking mechanism; the current transformer, the vacuum circuit breaker and the operation interlocking mechanism are installed in the circuit breaker isolation chamber, and the vacuum circuit breaker is installed below the upper grounding isolation knife and connected with the current transformer; the lower grounding isolation knife, the lightning arrester, the support insulator and the cable mounting column are installed in the cable compartment, the lightning arrester is suspended at one end of the cable compartment and connected to the cable mounting column through a cable, and the other end of the lightning arrester is connected to the support insulator installed on the side of the cable compartment; the other end of the lower grounding isolation knife is connected to the support insulator.

2. The switchgear according to claim 1, characterized in that The switch device further comprises: an LC compensation filter branch; The LC compensation filter branch is arranged in the busbar isolation chamber, and the LC compensation filter branch is connected to the upper grounding isolation switch.

3. The switchgear according to claim 2, characterized in that The vacuum circuit breaker is disconnected from and connected to the LC compensation filter branch as the upper grounding isolation knife moves up and down.

4. The switchgear according to claim 1, characterized in that The main body of the cabinet is provided with a plurality of heat dissipation holes.

5. The switchgear according to claim 1, characterized in that The main body is provided with a cabinet door for closing the main body, and the cabinet door is hinged to the main body.

6. The switchgear according to claim 5, characterized in that The switchgear further comprises a ground busbar; The grounding busbar is arranged at the bottom of the cable compartment, and the grounding busbar is used to ground the switch device.

7. The switchgear according to claim 5, characterized in that The switchgear also includes a door grounding wire; The door grounding wire is arranged at the bottom of the cable compartment, and the door grounding wire is used to ground the cabinet door.

8. The switchgear according to claim 5, characterized in that The cabinet body also includes a door lock, and the door lock is used to lock the cabinet body and the cabinet door.

9. The switchgear according to claim 1, characterized in that The switchgear further comprises a lifting ring; The hanging ring is arranged at the bottom of the main body of the cabinet.

10. The switchgear according to claim 1, characterized in that The switchgear further comprises a simulation disk; The simulation disk is arranged on the front side of the cable compartment, and the simulation disk is used to connect an external communication line.

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