Pole-mounted vacuum circuit breaker with multiple configuration schemes

Abstract

A pole-mounted vacuum circuit breaker with multiple configuration schemes comprises a case, the bottom surface of the case is provided with an A power supply side sampling hole, a C power supply side sampling hole, a B load side sampling hole and a D load side sampling hole, and the A power supply side sampling hole and the C power supply side sampling hole are arranged left and right and are both located at one end of the case. The B load side sampling hole and the D load side sampling hole are arranged left and right and are positioned in the middle of the case; an A-phase vacuum arc-extinguishing chamber, a B-phase vacuum arc-extinguishing chamber, a C-phase vacuum arc-extinguishing chamber and a D-phase vacuum arc-extinguishing chamber are arranged in an inner cavity of the case, an A power supply side sampling hole is communicated with an inner cavity of the A-phase vacuum arc-extinguishing chamber, a C power supply side sampling hole is communicated with an inner cavity of the C-phase vacuum arc-extinguishing chamber, a B load side sampling hole is communicated with an inner cavity of the B-phase vacuum arc-extinguishing chamber, and a D load side sampling hole is communicated with an inner cavity of the D-phase vacuum arc-extinguishing chamber. The D load side sampling hole is communicated with the inner cavity of the D-phase vacuum arc-extinguishing chamber; the A power supply side sampling hole is used for installing a zero sequence voltage sensor or a phase voltage sensor, the D load side sampling hole is used for installing a zero sequence voltage sensor or a phase voltage sensor, and the B load side sampling hole is used for installing a load side capacitance electricity taking power supply or blocking; and the power supply side sampling hole C is used for installing a power supply side capacitor power-taking power supply or plugging.

Description

Technical Field

[0001] The utility model relates to a circuit breaker device, in particular to a pole-mounted vacuum circuit breaker with multiple configuration schemes. Background Art

[0002] The vacuum circuit breaker is the most important control device in the power system, playing a dual role of protection and control. It can connect and disconnect the load current under normal circumstances, and can quickly cut off the current when a fault occurs in the power grid. The pole-mounted vacuum circuit breaker is a vacuum circuit breaker installed on an outdoor pole. In addition to the function of automatic control of opening and closing, it also needs to have an emergency manual opening function, so that the opening function can be realized manually when there is a problem with the automatic control system.

[0003] Since the pole-mounted vacuum circuit breaker is installed outdoors, a cabinet is required, and the cabinet is generally designed in a rectangular shape. The pole-mounted vacuum circuit breaker generally includes a cabinet and a three-phase pole. The three-phase pole is installed on the cabinet. Inside the cabinet, there are A-phase vacuum arc extinguishing chamber, B-phase vacuum arc extinguishing chamber, and C-phase vacuum arc extinguishing chamber arranged in sequence in the horizontal direction. Each phase pole corresponds to a vacuum arc extinguishing chamber. The three-phase poles are A-phase pole, B-phase pole, and C-phase pole. The A-phase pole corresponds to the A-phase vacuum arc extinguishing chamber, the B-phase pole corresponds to the B-phase vacuum arc extinguishing chamber, and the C-phase pole corresponds to the C-phase vacuum arc extinguishing chamber. There is a horizontal distance between two adjacent vacuum arc extinguishing chambers, and each vacuum arc extinguishing chamber is provided with a vertical pull rod. However, the three-phase pole position of this pole-mounted vacuum circuit breaker is fixed and the setting is single. Faced with different application scenarios and power grid environments, customers may need different pole arrangement methods in different application scenarios. The fixed pole position cannot meet the needs of different customers, and the position of the three-phase pole cannot be adjusted and configured according to different needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pole-mounted vacuum circuit breaker with multiple configuration schemes. The pole-mounted vacuum circuit breaker has multiple pole configuration schemes and can flexibly configure the positions of the poles.

[0005] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] A pole-mounted vacuum circuit breaker with multiple configuration schemes includes a chassis, characterized in that: a power supply side sampling hole A, a power supply side sampling hole C, a load side sampling hole B and a load side sampling hole D are arranged on the bottom surface of the chassis, the power supply side sampling hole A and the power supply side sampling hole C are arranged on the left and right and are both located at one end of the chassis, and the load side sampling hole B and the load side sampling hole D are arranged on the left and right and are both located in the middle of the chassis; an A-phase vacuum interrupter, a B-phase vacuum interrupter, a C-phase vacuum interrupter and a D-phase vacuum interrupter are arranged in the inner cavity of the chassis, and the power supply side sampling hole A ... right and left. The inner cavity of the A phase vacuum arc extinguishing chamber is connected, the C power supply side sampling hole is connected to the inner cavity of the C phase vacuum arc extinguishing chamber, the B load side sampling hole is connected to the inner cavity of the B phase vacuum arc extinguishing chamber, and the D load side sampling hole is connected to the inner cavity of the D phase vacuum arc extinguishing chamber; the A power supply side sampling hole is used to install a zero-sequence voltage sensor or a phase voltage sensor, the D load side sampling hole is used to install a zero-sequence voltage sensor or a phase voltage sensor, the B load side sampling hole is used to install the load side capacitor to take power or to plug it; the C power supply side sampling hole is used to install the power supply side capacitor to take power or to plug it.

[0007] According to the requirements of different pole numbers, multiple sampling holes are set at the bottom of the chassis, and vacuum arc extinguishing chambers corresponding to each phase are set inside the chassis. Different sensors and capacitor power supplies are installed in the corresponding vacuum arc extinguishing chambers through different sampling holes, respectively, to provide two-phase, three-phase and four-phase configuration pre-selection schemes for the pole-mounted vacuum circuit breaker. The position and number of poles of each phase can be flexibly adjusted according to the requirements of different application scenarios and power grid environment to meet the needs of different customers and better adapt to different application scenarios.

[0008] In the preferred embodiment, in the case of two-phase poles, the zero-sequence voltage sensor is installed in the A-phase vacuum interrupter through the A power supply side sampling hole, the phase voltage sensor is installed in the D-phase vacuum interrupter through the D load side sampling hole, the C power supply side sampling hole is blocked, and the B load side sampling hole is blocked;

[0009] Or in the case of a two-phase pole, the phase voltage sensor is installed in the A phase vacuum interrupter through the A power side sampling hole, the zero-sequence voltage sensor is installed in the D phase vacuum interrupter through the D load side sampling hole, the C power side sampling hole is blocked, and the B load side sampling hole is blocked.

[0010] In the preferred solution, in the case of a three-phase pole, the zero-sequence voltage sensor is installed in the A-phase vacuum interrupter through the A power supply side sampling hole, the phase voltage sensor is installed in the D-phase vacuum interrupter through the D load side sampling hole, the power supply side capacitor power supply is installed in the C-phase vacuum interrupter through the C power supply side sampling hole, and the B load side sampling hole is blocked;

[0011] Or in the case of three-phase poles, the zero-sequence voltage sensor is installed in the A-phase vacuum interrupter through the A power supply side sampling hole, the phase voltage sensor is installed in the D-phase vacuum interrupter through the D load side sampling hole, the load side capacitor power supply is installed in the B-phase vacuum interrupter through the B load side sampling hole, and the C power supply side sampling hole is blocked;

[0012] Or in the case of a three-phase pole, the phase voltage sensor is installed in the A-phase vacuum interrupter through the A power supply side sampling hole, the zero-sequence voltage sensor is installed in the D-phase vacuum interrupter through the D-load side sampling hole, the power supply side capacitor is installed in the C-phase vacuum interrupter through the C-power supply side sampling hole, and the B-load side sampling hole is blocked;

[0013] Or in the case of a three-phase pole, the phase voltage sensor is installed in the A phase vacuum interrupter through the A power supply side sampling hole, the zero-sequence voltage sensor is installed in the D phase vacuum interrupter through the D load side sampling hole, the load side capacitor power supply is installed in the B phase vacuum interrupter through the B load side sampling hole, and the C power supply side sampling hole is blocked.

[0014] In the preferred embodiment, in the case of a four-phase pole, the zero-sequence voltage sensor is installed in the A-phase vacuum interrupter through the A power supply side sampling hole, the phase voltage sensor is installed in the D-phase vacuum interrupter through the D load side sampling hole, the load side capacitor power supply is installed in the B-phase vacuum interrupter through the B load side sampling hole, and the power supply side capacitor power supply is installed in the C-phase vacuum interrupter through the C power supply side sampling hole;

[0015] Or in the case of a four-phase pole, the phase voltage sensor is installed in the A phase vacuum interrupter through the A power supply side sampling hole, the zero-sequence voltage sensor is installed in the D phase vacuum interrupter through the D load side sampling hole, the load side capacitor power supply is installed in the B phase vacuum interrupter through the B load side sampling hole, and the power supply side capacitor power supply is installed in the C phase vacuum interrupter through the C power supply side sampling hole.

[0016] In the preferred embodiment, the sampling holes A on the power supply side, C on the power supply side, B on the load side, and D on the load side are all filled with sealing rubber blocks. After each sensor and each capacitor power supply is installed into the corresponding vacuum interrupter cavity through the corresponding sampling holes, a sealing rubber block is filled into each sampling hole to seal the lower end opening of each vacuum interrupter, which can not only firmly install each sensor and each capacitor power supply in the corresponding vacuum interrupter cavity, but also effectively prevent the external environment from polluting and damaging the internal electrical equipment, thereby improving the reliability and service life of the equipment.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The utility model can flexibly adjust the position and quantity of poles of each phase according to the requirements of different application scenarios and power grid environments, meet the needs of different customers, and better adapt to different application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a specific embodiment 1 of the utility model;

[0020] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the vacuum circuit breaker on the center column;

[0021] Figure 3 yes Figure 1 Cross-section of EE;

[0022] Figure 4 yes Figure 1 Cross-section of the middle FF;

[0023] Figure 5 yes Figure 1 Schematic diagram of the structure of the four-phase pole;

[0024] Figure 6 It is a structural schematic diagram of specific embodiment 3 of the utility model;

[0025] Figure 7 It is a structural schematic diagram of a specific embodiment 5 of the utility model;

[0026] Figure 8 It is a structural schematic diagram of specific embodiment 8 of the present utility model. DETAILED DESCRIPTION

[0027] The following is a further description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0028] Example 1

[0029] like Figure 1-5As shown, the pole-mounted vacuum circuit breaker of the multi-configuration scheme in this embodiment includes a chassis 1, and a bottom surface 11 of the chassis 1 is provided with a power supply side sampling hole A, a power supply side sampling hole C, a load side sampling hole B and a load side sampling hole D. The power supply side sampling hole A and the power supply side sampling hole C are arranged on the left and right and are both located at one end of the chassis 1, and the load side sampling hole B and the load side sampling hole D are arranged on the left and right and are both located in the middle of the chassis 1; the inner cavity of the chassis 1 is provided with a vacuum interrupter of phase A, a vacuum interrupter of phase B, a vacuum interrupter of phase C and a vacuum interrupter of phase D Arc chamber, the sampling hole A on the power supply side is connected to the inner cavity of the A phase vacuum arc extinguishing chamber, the sampling hole C on the power supply side is connected to the inner cavity of the C phase vacuum arc extinguishing chamber, the sampling hole B on the load side is connected to the inner cavity of the B phase vacuum arc extinguishing chamber, and the sampling hole D on the load side is connected to the inner cavity of the D phase vacuum arc extinguishing chamber; the sampling hole A on the power supply side is used to install the zero-sequence voltage sensor 2, the sampling hole D on the load side is used to install the phase voltage sensor 3, the sampling hole B on the load side is used to install the load side capacitor power supply 4; the sampling hole C on the power supply side is used to install the power supply side capacitor power supply 5.

[0030] In response to different requirements for the number of poles, multiple sampling holes are set at the bottom of the chassis 1, and vacuum arc extinguishing chambers corresponding to each phase are set inside the chassis 1. Different sensors and capacitor power supplies are installed in the corresponding vacuum arc extinguishing chambers through different sampling holes, respectively, to provide two-phase, three-phase and four-phase configuration pre-selection schemes for the pole-mounted vacuum circuit breaker. The position and number of poles of each phase can be flexibly adjusted according to the requirements of different application scenarios and power grid environment to meet the needs of different customers and better adapt to different application scenarios.

[0031] In the case of a four-phase pole, the zero-sequence voltage sensor 2 is installed in the A-phase vacuum interrupter through the A power supply side sampling hole, the phase voltage sensor 3 is installed in the D-phase vacuum interrupter through the D load side sampling hole, the load side capacitor power supply 4 is installed in the B-phase vacuum interrupter through the B load side sampling hole, and the power supply side capacitor power supply 5 is installed in the C-phase vacuum interrupter through the C power supply side sampling hole;

[0032] The sampling holes A on the power supply side, C on the power supply side, B on the load side, and D on the load side are all filled with sealing rubber blocks 6. After each sensor and each capacitor power supply is installed into the corresponding vacuum interrupter cavity through the corresponding sampling holes, the sealing rubber blocks 6 are filled into each sampling hole to seal the lower end opening of each vacuum interrupter, which can not only firmly install each sensor and each capacitor power supply in the corresponding vacuum interrupter cavity, but also effectively prevent the external environment from polluting and damaging the internal electrical equipment, thereby improving the reliability and service life of the equipment.

[0033] Example 2

[0034] The difference between the pole mounted vacuum circuit breaker of the multi-configuration scheme in this embodiment and that in the embodiment 1 is as follows:

[0035] In the case of a four-phase pole, the phase voltage sensor 3 is installed in the A phase vacuum arc chamber through the A power supply side sampling hole, the zero-sequence voltage sensor 2 is installed in the D phase vacuum arc chamber through the D load side sampling hole, the load side capacitor power supply 4 is installed in the B phase vacuum arc chamber through the B load side sampling hole, and the power supply side capacitor power supply 5 is installed in the C phase vacuum arc chamber through the C power supply side sampling hole.

[0036] Example 3

[0037] like Figure 6 As shown, the difference between the pole-mounted vacuum circuit breaker of the multi-configuration scheme in this embodiment and that in embodiment 1 is as follows:

[0038] In the case of two-phase poles, the zero-sequence voltage sensor 2 is installed in the A-phase vacuum interrupter through the A power supply side sampling hole, the phase voltage sensor 3 is installed in the D-phase vacuum interrupter through the D load side sampling hole, the C power supply side sampling hole is blocked, and the B load side sampling hole is blocked.

[0039] Example 4

[0040] The difference between the pole mounted vacuum circuit breaker of the multi-configuration scheme in this embodiment and that in the embodiment 1 is as follows:

[0041] In the case of a two-phase pole, the phase voltage sensor 3 is installed in the A phase vacuum interrupter through the A power supply side sampling hole, the zero-sequence voltage sensor 2 is installed in the D phase vacuum interrupter through the D load side sampling hole, the C power supply side sampling hole is blocked, and the B load side sampling hole is blocked.

[0042] Example 5

[0043] like Figure 7 As shown, the difference between the pole-mounted vacuum circuit breaker of the multi-configuration scheme in this embodiment and that in embodiment 1 is as follows:

[0044] In the case of a three-phase pole, the zero-sequence voltage sensor 2 is installed in the A-phase vacuum arc chamber through the A power supply side sampling hole, the phase voltage sensor 3 is installed in the D-phase vacuum arc chamber through the D load side sampling hole, the power supply side capacitor power supply 5 is installed in the C-phase vacuum arc chamber through the C power supply side sampling hole, and the B load side sampling hole is blocked.

[0045] Example 6

[0046] The difference between the pole mounted vacuum circuit breaker of the multi-configuration scheme in this embodiment and that in the embodiment 1 is as follows:

[0047] In the case of a three-phase pole, the zero-sequence voltage sensor 2 is installed in the A-phase vacuum arc chamber through the A power supply side sampling hole, the phase voltage sensor 3 is installed in the D-phase vacuum arc chamber through the D load side sampling hole, the load side capacitor power supply 4 is installed in the B-phase vacuum arc chamber through the B load side sampling hole, and the C power supply side sampling hole is blocked.

[0048] Example 7

[0049] The difference between the pole mounted vacuum circuit breaker of the multi-configuration scheme in this embodiment and that in the embodiment 1 is as follows:

[0050] In the case of a three-phase pole, the phase voltage sensor 3 is installed in the A phase vacuum arc chamber through the A power side sampling hole, the zero-sequence voltage sensor 2 is installed in the D phase vacuum arc chamber through the D load side sampling hole, the power side capacitor power supply 5 is installed in the C phase vacuum arc chamber through the C power side sampling hole, and the B load side sampling hole is blocked.

[0051] Example 8

[0052] like Figure 8 As shown, the difference between the pole-mounted vacuum circuit breaker of the multi-configuration scheme in this embodiment and that in embodiment 1 is as follows:

[0053] In the case of a three-phase pole, the phase voltage sensor 3 is installed in the A phase vacuum arc chamber through the A power supply side sampling hole, the zero-sequence voltage sensor 2 is installed in the D phase vacuum arc chamber through the D load side sampling hole, the load side capacitor power supply 4 is installed in the B phase vacuum arc chamber through the B load side sampling hole, and the C power supply side sampling hole is blocked.

[0054] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A pole mounted vacuum circuit breaker with multiple configuration schemes, comprising a chassis, characterized in that: The bottom surface of the chassis is provided with a sampling hole on the power supply side A, a sampling hole on the power supply side C, a sampling hole on the load side B and a sampling hole on the load side D. The sampling holes on the power supply side A and C are arranged on the left and right and are both located at one end of the chassis, and the sampling holes on the load side B and D are arranged on the left and right and are both located in the middle of the chassis; the inner cavity of the chassis is provided with a vacuum arc extinguishing chamber of phase A, a vacuum arc extinguishing chamber of phase B, a vacuum arc extinguishing chamber of phase C and a vacuum arc extinguishing chamber of phase D, the sampling hole on the power supply side A is communicated with the inner cavity of the vacuum arc extinguishing chamber of phase A, the sampling hole on the power supply side C is communicated with the inner cavity of the vacuum arc extinguishing chamber of phase C, the sampling hole on the load side B is communicated with the inner cavity of the vacuum arc extinguishing chamber of phase B, and the sampling hole on the load side D is communicated with the inner cavity of the vacuum arc extinguishing chamber of phase D; the sampling hole on the power supply side A is used to install a zero-sequence voltage sensor or a phase voltage sensor, the sampling hole on the load side D is used to install a zero-sequence voltage sensor or a phase voltage sensor, the sampling hole on the load side B is used to install a load-side capacitor power supply or plugging; the sampling hole on the power supply side C is used to install a power supply side capacitor power supply or plugging.

2. The multi-configuration pole mounted vacuum circuit breaker according to claim 1, characterized in that: In the case of two-phase poles, the zero-sequence voltage sensor is installed in the A-phase vacuum interrupter through the sampling hole on the A power supply side, and the phase voltage sensor is installed in the D-phase vacuum interrupter through the sampling hole on the D load side. The sampling hole on the C power supply side is blocked, and the sampling hole on the B load side is blocked; Or in the case of a two-phase pole, the phase voltage sensor is installed in the A phase vacuum interrupter through the A power side sampling hole, the zero-sequence voltage sensor is installed in the D phase vacuum interrupter through the D load side sampling hole, the C power side sampling hole is blocked, and the B load side sampling hole is blocked.

3. The multi-configuration pole mounted vacuum circuit breaker according to claim 1, characterized in that: In the case of three-phase poles, the zero-sequence voltage sensor is installed in the A-phase vacuum interrupter through the A power supply side sampling hole, the phase voltage sensor is installed in the D-phase vacuum interrupter through the D-load side sampling hole, the power supply side capacitor is installed in the C-phase vacuum interrupter through the C-power supply side sampling hole, and the B-load side sampling hole is blocked; Or in the case of three-phase poles, the zero-sequence voltage sensor is installed in the A-phase vacuum interrupter through the A power supply side sampling hole, the phase voltage sensor is installed in the D-phase vacuum interrupter through the D load side sampling hole, the load side capacitor power supply is installed in the B-phase vacuum interrupter through the B load side sampling hole, and the C power supply side sampling hole is blocked; Or in the case of a three-phase pole, the phase voltage sensor is installed in the A-phase vacuum interrupter through the A power supply side sampling hole, the zero-sequence voltage sensor is installed in the D-phase vacuum interrupter through the D-load side sampling hole, the power supply side capacitor is installed in the C-phase vacuum interrupter through the C-power supply side sampling hole, and the B-load side sampling hole is blocked; Or in the case of a three-phase pole, the phase voltage sensor is installed in the A phase vacuum interrupter through the A power supply side sampling hole, the zero-sequence voltage sensor is installed in the D phase vacuum interrupter through the D load side sampling hole, the load side capacitor power supply is installed in the B phase vacuum interrupter through the B load side sampling hole, and the C power supply side sampling hole is blocked.

4. The multi-configuration pole mounted vacuum circuit breaker according to claim 1, characterized in that: In the case of four-phase poles, the zero-sequence voltage sensor is installed in the A-phase vacuum interrupter through the A power supply side sampling hole, the phase voltage sensor is installed in the D-phase vacuum interrupter through the D load side sampling hole, the load side capacitor power supply is installed in the B-phase vacuum interrupter through the B load side sampling hole, and the power supply side capacitor power supply is installed in the C-phase vacuum interrupter through the C power supply side sampling hole; Or in the case of a four-phase pole, the phase voltage sensor is installed in the A phase vacuum interrupter through the A power supply side sampling hole, the zero-sequence voltage sensor is installed in the D phase vacuum interrupter through the D load side sampling hole, the load side capacitor power supply is installed in the B phase vacuum interrupter through the B load side sampling hole, and the power supply side capacitor power supply is installed in the C phase vacuum interrupter through the C power supply side sampling hole.

5. The pole mounted vacuum circuit breaker with multiple configuration schemes as claimed in claim 1, characterized in that: The A power supply side sampling hole, C power supply side sampling hole, B load side sampling hole, and D load side sampling hole are all filled with sealing rubber blocks.

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