Bus equipment cabinet with bus grounding function

Abstract

The utility model relates to a bus equipment cabinet with a bus grounding function, which is characterized by comprising a cabinet body and an air box, the cabinet body is provided with a mechanism chamber, a lightning protection chamber, a rear pressure relief chamber and a top pressure relief chamber, and a bus air chamber and a three-station air chamber are arranged in the air box. The bus gas chamber and the three-position gas chamber are integrally welded and then placed on a lightning protection chamber of the cabinet body, a grounding switch operation mechanism of the bus gas chamber and a three-position switch operation mechanism of the three-position gas chamber are arranged at the front part of the gas box, an electricity testing socket is arranged at the rear part of the bus gas chamber, a voltage transformer is arranged at the rear part of the three-position gas chamber, and a lightning arrester is arranged at the bottom of the three-position gas chamber; in the design of a primary scheme without changing other common cabinet types, the main bus grounding function can be realized at the minimum cost; the grounding switch with the main bus grounding function and the three-position switch with the isolating and grounding functions at the wire outlet end are innovatively arranged in the two air chambers of the switch equipment, and the scheme is reliable and effective.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical switch equipment, in particular to a busbar equipment cabinet with a busbar grounding function. Background Art

[0002] In the primary scheme of 40.5kV C-GIS switchgear, if the busbar is energized and the power is cut off in the substation, the busbar may have residual charge when the equipment is repaired, which has a safety impact on the maintenance personnel. To ensure the safety of maintenance work, a busbar grounding switch is installed on the busbar equipment switch cabinet, which can transfer the residual charge of the main busbar to the earth system, making the busbar and the ground at the same potential, ensuring the safety of maintenance work.

[0003] In order to achieve busbar grounding in the prior art, it is necessary to use the main circuit of the switch cabinet to ground the busbar on the transformer side after the system is powered off; this solution still belongs to manual active grounding and has certain safety hazards. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a busbar equipment cabinet with a busbar grounding function, which realizes the isolation of voltage transformer and lightning arrester load and has the function of busbar grounding.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a busbar equipment cabinet with busbar grounding function, the innovation of which is: comprising a cabinet body and a gas box, the cabinet body is provided with a mechanism room, a lightning protection room, a rear pressure relief room, and a top pressure relief room, the gas box is provided with a busbar gas chamber and a three-position gas chamber, and the busbar gas chamber and the three-position gas chamber are integrally welded and placed on the lightning protection room of the cabinet body, the front part of the gas box is provided with a grounding switch operating mechanism of the busbar gas chamber and a three-position switch operating mechanism of the three-position gas chamber, the rear part of the busbar gas chamber is provided with an electric test socket, the rear part of the three-position gas chamber is provided with a voltage transformer, and the bottom is provided with a lightning arrester;

[0006] The top pressure relief chamber, busbar air chamber, three-station air chamber and lightning arrester are arranged in sequence from top to bottom; the mechanism chamber is arranged in front of the three chambers of the busbar air chamber, the top pressure relief chamber and the lightning arrester;

[0007] The busbar gas chamber is provided with a grounding switch, which can be connected and grounded. The busbar gas chamber is filled with low-pressure SF6 gas. The busbar gas chamber has three phases, and each phase includes a busbar bushing, a busbar gas chamber grounding switch, and an electric test socket. The busbar gas chamber grounding switch is tested for electricity through the electric test socket.

[0008] The conductor at the on position of the grounding switch is fixed on the main busbar, and the conductor at the grounding position is connected to the gas box through the busbar; the switching between on and grounding is achieved by the moving conductor driven by the screw rod;

[0009] The three-station gas chamber is provided with three stations, and the three stations can perform connection, isolation and grounding operations. The three-station gas chamber is filled with low-pressure SF6 gas; the three-station gas chamber has three phases, each of which includes a voltage transformer, a lightning arrester and a three-station switch;

[0010] The conductor at the connection position of the three stations is fixed on the wall bushing, the conductor at the isolation position is fixed on the insulator, and the grounding conductor is fixed on the gas box; the connection, isolation and grounding operations are switched by the moving conductor driven by the screw rod;

[0011] The busbar gas chamber is in the energized operation state, and the busbar gas chamber grounding switch is in the grounding position; the three-position switch of the three-position chamber is in the on position, and the voltage transformer and the lightning arrester are both in the operating state; when the busbar gas chamber is in the energized state, the busbar gas chamber power detection socket detects that the system is energized, and the busbar gas chamber grounding switch operation of the busbar gas chamber is locked through the control function;

[0012] When the busbar gas chamber is in a power-off state and the grounding switch of the busbar gas chamber is operated to the grounding position, the busbar gas chamber detects that there is no electricity in the busbar by setting an electric test socket, thereby operating the grounding switch of the busbar gas chamber to ground the busbar.

[0013] Furthermore, the busbar air chamber is connected to the pressure relief chamber through a wall bushing.

[0014] Furthermore, the voltage transformer is arranged at the upper rear part of the busbar air chamber and is installed in an inverted manner.

[0015] Furthermore, the mechanism room is provided with an operating mechanism of a grounding switch of the busbar gas chamber and an operating mechanism of a three-position switch.

[0016] Furthermore, a density relay is provided in the busbar air chamber for displaying the internal pressure of the air chamber.

[0017] Furthermore, the grounding switch in the busbar gas chamber has the functions of connection and grounding.

[0018] Furthermore, the grounding switch in the three-station air chamber has connection, isolation and grounding functions.

[0019] The advantages of the utility model are:

[0020] 1) In the utility model, the function of main busbar grounding can be realized at the minimum cost without changing the design of the primary scheme of other commonly used cabinet types; this function innovatively sets a grounding switch with main busbar grounding function and a three-position switch with isolation and grounding functions at the outgoing line end in the two gas chambers of the switchgear, and the scheme is reliable and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Figure 1 The utility model is a structural diagram of a busbar equipment cabinet with a busbar grounding function. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1 A busbar equipment cabinet with a busbar grounding function shown in the figure comprises a cabinet body 1 and a gas box 2. The cabinet body 1 is provided with a mechanism chamber 11, a lightning arrester chamber 12, a rear pressure relief chamber 13, and a top pressure relief chamber 14. A busbar gas chamber 21 and a three-station gas chamber 22 are provided in the gas box 2. The busbar gas chamber and the three-station gas chamber are integrally welded and placed on the lightning arrester chamber 12 of the cabinet body 1. A grounding switch operating mechanism 23 of the busbar gas chamber and a three-station switch operating mechanism 24 of the three-station gas chamber are provided at the front of the gas box. An electric test socket is provided at the rear of the busbar gas chamber 21, a voltage transformer is provided at the rear of the three-station gas chamber, and a lightning arrester is provided at the bottom.

[0026] The top pressure relief chamber 14, the busbar air chamber 21, the three-station air chamber 22 and the lightning arrester chamber 12 are arranged in sequence from top to bottom; the mechanism chamber 11 is arranged in front of the three chambers of the busbar air chamber 21, the top pressure relief chamber 14 and the lightning arrester chamber 12;

[0027] The busbar gas chamber 21 is provided with a grounding switch, which can be connected and grounded. The busbar gas chamber 21 is filled with low-pressure SF6 gas. The busbar gas chamber 21 has three phases, and each phase includes a busbar bushing, a busbar gas chamber grounding switch, and an electric test socket. The busbar gas chamber grounding switch is tested for electricity through the electric test socket.

[0028] The conductor at the on position of the grounding switch is fixed on the main busbar, and the conductor at the grounding position is connected to the gas box 2 through the busbar; the switching between on and grounding is achieved through the moving conductor driven by the screw rod;

[0029] Three stations are arranged in the three-station gas chamber 22, and the three stations can perform connection, isolation and grounding operations. The three-station gas chamber 22 is filled with low-pressure SF6 gas; the three-station gas chamber 22 has three phases, each of which includes a voltage transformer, a lightning arrester and a three-station switch;

[0030] The conductor at the connection position of the three-station is fixed on the wall bushing, the conductor at the isolation position is fixed on the insulator, and the grounding conductor is fixed on the gas box; the connection, isolation and grounding operations are switched through the moving conductor driven by the screw rod;

[0031] The busbar air chamber 21 is connected to the pressure relief chamber through a wall bushing.

[0032] The voltage transformer is arranged at the upper rear part of the busbar gas chamber and installed in an inverted manner.

[0033] The mechanism chamber 11 is provided with an operating mechanism 23 of a grounding switch of a busbar gas chamber and an operating mechanism 24 of a three-position switch.

[0034] A density relay is provided in the busbar air chamber 21 for displaying the internal pressure of the air chamber.

[0035] The grounding switch in the busbar gas chamber 21 has the functions of connection and grounding.

[0036] The grounding switch in the three-position air chamber 22 has the functions of connection, isolation and grounding.

[0037] The working principle of the utility model is: when the equipment is normally energized, the busbar gas chamber grounding switch of the busbar gas chamber is in the grounding position, and the three-position switch of the busbar gas chamber is in the on position; the main busbar is energized, and the voltage transformer and lightning arrester are put into system operation; after the main busbar is energized, the power detection socket at the rear of the busbar gas chamber detects that the system is energized, and the busbar gas chamber grounding switch operation of the busbar gas chamber is locked through the control function;

[0038] When the equipment needs to be repaired due to power outage, the three-position switch of the busbar gas chamber is operated to the isolation position and then to the grounding position; when the busbar is powered off, the power testing socket of the busbar gas chamber detects that there is no electricity in the busbar. At this time, the busbar gas chamber grounding switch of the busbar gas chamber can be operated to ground the busbar.

[0039] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A busbar equipment cabinet with busbar grounding function, characterized in that: It includes a cabinet and a gas box. The cabinet is provided with a mechanism room, a lightning protection room, a rear pressure relief room, and a top pressure relief room. The gas box is provided with a busbar gas chamber and a three-station gas chamber. The busbar gas chamber and the three-station gas chamber are integrally welded and placed on the lightning protection room of the cabinet. The front of the gas box is provided with a grounding switch operating mechanism of the busbar gas chamber and a three-station switch operating mechanism of the three-station gas chamber. The rear of the busbar gas chamber is provided with an electric test socket. A voltage transformer is provided behind the three-station gas chamber, and a lightning arrester is provided at the bottom. The top pressure relief chamber, busbar air chamber, three-station air chamber and lightning arrester are arranged in sequence from top to bottom; the mechanism chamber is arranged in front of the three chambers of the busbar air chamber, the top pressure relief chamber and the lightning arrester; The busbar gas chamber is provided with a grounding switch, which can be connected and grounded. The busbar gas chamber is filled with low-pressure SF6 gas. The busbar gas chamber has three phases, and each phase includes a busbar bushing, a busbar gas chamber grounding switch, and an electric test socket. The busbar gas chamber grounding switch is tested for electricity through the electric test socket. The conductor at the on position of the grounding switch is fixed on the main busbar, and the conductor at the grounding position is connected to the gas box through the busbar; the switching between on and grounding is achieved by the moving conductor driven by the screw rod; The three-station gas chamber is provided with three stations, and the three stations can perform connection, isolation and grounding operations. The three-station gas chamber is filled with low-pressure SF6 gas; the three-station gas chamber has three phases, each of which includes a voltage transformer, a lightning arrester and a three-station switch; The conductor at the connection position of the three stations is fixed on the wall bushing, the conductor at the isolation position is fixed on the insulator, and the grounding conductor is fixed on the gas box; the connection, isolation and grounding operations are switched by the moving conductor driven by the screw rod; The busbar gas chamber is in the energized operation state, and the busbar gas chamber grounding switch is in the grounding position; the three-position switch of the three-position chamber is in the on position, and the voltage transformer and the lightning arrester are both in the operating state; when the busbar gas chamber is in the energized state, the busbar gas chamber power detection socket detects that the system is energized, and the busbar gas chamber grounding switch operation of the busbar gas chamber is locked through the control function; When the busbar gas chamber is in a power-off state and the grounding switch of the busbar gas chamber is operated to the grounding position, the busbar gas chamber detects that there is no electricity in the busbar by setting an electric test socket, thereby operating the grounding switch of the busbar gas chamber to ground the busbar.

2. A busbar equipment cabinet with busbar grounding function according to claim 1, characterized in that: The busbar air chamber is connected to the pressure relief chamber through a wall bushing.

3. A busbar equipment cabinet with busbar grounding function according to claim 1, characterized in that: The voltage transformer is arranged at the upper rear part of the busbar gas chamber and is installed in an inverted manner.

4. A busbar equipment cabinet with busbar grounding function according to claim 1, characterized in that: The mechanism room is provided with an operating mechanism of a grounding switch of a busbar gas chamber and an operating mechanism of a three-position switch.

5. The busbar equipment cabinet with busbar grounding function according to claim 1, characterized in that: The busbar air chamber is provided with a density relay for displaying the internal pressure of the air chamber.

6. A busbar equipment cabinet with busbar grounding function according to claim 1, characterized in that: The grounding switch in the busbar gas chamber has the functions of connection and grounding.

7. The busbar equipment cabinet with busbar grounding function according to claim 1, characterized in that: The grounding switch in the three-position air chamber has the functions of connection, isolation and grounding.

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