Double-bus large-current switch gas tank capable of stably supplying power

Abstract

The utility model discloses a double-bus large-current switch gas box capable of stably supplying power, which belongs to the technical field of electrical equipment, and comprises a box body, a mounting rack is fixedly mounted in the box body, three wall bushings are arranged on the mounting rack, and the wall bushings are arranged on the mounting rack. A first three-position disconnecting switch and a second three-position disconnecting switch are installed on the inner walls of the two ends of the box body respectively, a circuit breaker body is installed on the inner wall of one end of the box body, and the first three-position disconnecting switch and the second three-position disconnecting switch can be arranged in the box body and correspondingly connected with a first ejection sleeve set and a second ejection sleeve set. When one group of buses breaks down or needs to be overhauled, each power supply and each loop load can be distributed to other groups of buses, power supply can be quickly recovered, and in-turn overhauling is realized without power failure, so that stable power supply to equipment is ensured.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to a dual-busbar high-current switchgear box capable of stable power supply. Background Technology

[0002] Gas-insulated switchgear is an important component in power equipment, used to control and protect electrical equipment in power systems. It is typically installed on the top or side of power switchgear, its main function being to isolate circuits, prevent arcing and electric shock, thereby protecting operators and equipment. In existing technology, large-scale power equipment manufacturers primarily use gas-insulated technology for switchgear in 40.5kV 2500A voltage levels of power transmission and distribution networks. The main technical solution involves installing circuit breakers, disconnect switches, busbars, and other components inside a gas-insulated box, achieving insulation between switches and phases by filling the box with an insulating gas (such as SF6 gas).

[0003] Based on the above, the inventors discovered that: due to the large size of the 40.5kV 2500A high-voltage switchgear, the electrodynamic force during circuit breaker operation can easily cause deformation of the gas box, thereby affecting the reliability of the busbar connection. When a set of busbars fails, the entire equipment usually cannot quickly restore power supply. When the busbars inside the gas box are under maintenance, power supply usually needs to be stopped, resulting in relatively poor power supply reliability for the entire equipment. At the same time, the distribution of power sources and circuit loads within a traditional switchgear to a particular set of busbars is usually limited, thus failing to adapt to the needs of scheduling various operating modes and power flow changes in the system. Therefore, in view of this, the inventors have researched and improved the existing structure to provide a stable power supply dual-busbar high-current switchgear, aiming to achieve a more practical value. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a stable power supply dual-busbar high-current switchgear box. It can be equipped with a three-position disconnect switch I and a three-position disconnect switch II inside the box, and correspondingly connected to a first and second set of ejector bushings. This allows for the distribution of power sources and circuit loads to other busbars when one busbar fails or requires maintenance, enabling rapid power restoration. Furthermore, it allows for alternating maintenance without power interruption, ensuring stable power supply to equipment. In addition, the arbitrary and even distribution of power sources and circuit loads to a single busbar can adapt to various operating modes and power flow changes within the system, greatly improving scheduling flexibility.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A high-current switchgear box with stable power supply via dual busbars includes a box body. An installation frame is fixedly installed inside the box body. Three through-wall bushings are mounted on the installation frame. Three-position disconnect switches I and II are respectively installed on the inner walls of both ends of the box body. A circuit breaker body is installed on the inner wall of one end of the box body. An ejector bushing group I and an ejector bushing group II are provided on the top of the box body. Three sets of downward-outlet inner conical bushing groups are provided on the bottom of the box body. A copper busbar I is installed at the top of each through-wall bushing. The two ends of the copper busbar I are respectively connected to the corresponding ends of three-position disconnect switches I and II. The bottom of each through-wall bushing is connected to the inlet end of the circuit breaker body via copper busbar II. The outlet end of the circuit breaker body is connected to the corresponding downward-outlet inner conical bushing group via copper busbar III.

[0009] Furthermore, the three-position disconnect switch one and the three-position disconnect switch two are located above the mounting bracket, while the circuit breaker body is located below the mounting bracket.

[0010] Furthermore, disconnector mechanism one and disconnector mechanism two are respectively installed at both ends of the housing, and disconnector mechanism one and disconnector mechanism two are respectively connected to three-position disconnector one and three-position disconnector two.

[0011] Furthermore, a circuit breaker mechanism is installed at one end of the enclosure and is sealed to the circuit breaker body through a dynamic seal of the circuit breaker.

[0012] Furthermore, the ejector sleeve assembly includes three ejector sleeves, and an upper busbar is installed at the bottom end of each ejector sleeve. The upper busbar is connected to the corresponding end of the three-position isolating switch via a copper busbar.

[0013] Furthermore, the ejector sleeve group two includes three ejector sleeves two, and an upper busbar two is installed at the bottom end of the ejector sleeve two. The upper busbar two is connected to the corresponding end of the three-position isolating switch two through a copper busbar five.

[0014] Furthermore, the lower inner conical sleeve assembly includes multiple lower inner conical sleeves, and the tops of the multiple lower inner conical sleeves are fixedly connected by a lower busbar, which is connected to the outgoing terminal of the circuit breaker body via a copper busbar.

[0015] 3. Beneficial Effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] This solution, by installing three-position disconnect switches one and two inside the enclosure and correspondingly connecting them to top-out bushing group one and top-out bushing group two, and with the cooperation of through-wall bushings, bottom-out inner cone bushings, and the lower busbar, allows for the distribution of power supplies and circuit loads to other busbars when one busbar fails or requires maintenance. This maintains the continuity of the equipment circuits, enabling rapid power restoration and allowing for staggered maintenance without power interruption, ensuring stable power supply to the equipment. Furthermore, the solution allows for the arbitrarily and evenly distributed power supplies and circuit loads to any busbar, adapting to various operating modes and power flow changes within the system, greatly improving scheduling flexibility. Moreover, expansion of the bidirectional busbar in either direction does not affect the even distribution of power and load between the two busbars, making equipment expansion more convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 3 For the present utility model Figure 1 A schematic diagram showing the removal of part of the box structure;

[0021] Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Box body;

[0024] 2. Mounting bracket;

[0025] 3. Through-wall sleeve;

[0026] 4. One three-position disconnect switch;

[0027] 5. Two three-position disconnect switches;

[0028] 6. Circuit breaker body;

[0029] 7. Disconnecting switch mechanism one;

[0030] 8. Disconnecting switch mechanism two;

[0031] 9. Circuit breaker mechanism;

[0032] 10. Ejector Bushing Assembly 1; 1001. Ejector Bushing 1; 1002. Upper Busbar 1;

[0033] 11. Ejector Bushing Assembly 2; 1101. Ejector Bushing Assembly 2; 1102. Upper Busbar Assembly 2;

[0034] 12. Lower the inner conical sleeve assembly; 1201. Lower the inner conical sleeve; 1202. Lower the busbar;

[0035] 13. Copper busbar one;

[0036] 14. Bronze Plate Two;

[0037] 15. Bronze Plate Three;

[0038] 16. Bronze Arrangement Four;

[0039] 17. Bronze Plate Five. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0041] Example:

[0042] Please see Figures 1-4 A high-current switchgear box with a stable power supply via a double busbar includes a box body 1. A mounting frame 2 is fixedly installed inside the box body 1. Three through-wall bushings 3 are mounted on the mounting frame 2. Three-position disconnect switches 4 and 5 are respectively installed on the inner walls of both ends of the box body 1. A circuit breaker body 6 is installed on the inner wall of one end of the box body 1. A first-outlet bushing assembly 10 and a second-outlet bushing assembly 11 are installed on the top of the box body 1. Three sets of lower-outlet inner conical bushing assemblies 12 are installed at the bottom of the box body 1. A copper busbar 13 is installed at the top of the through-wall bushing 3. The two ends of the copper busbar 13 are respectively connected to the corresponding ends of the three-position disconnect switches 4 and 5. The bottom of the through-wall bushing 3 is connected to the inlet end of the circuit breaker body 6 via the second copper busbar 14. The outlet end of the circuit breaker body 6 is connected to the corresponding lower-outlet inner conical bushing assembly 12 via the third copper busbar 15.

[0043] See Figure 3 Three-position disconnect switch 4 and three-position disconnect switch 5 are located above the mounting bracket 2, and the circuit breaker body 6 is located below the mounting bracket 2.

[0044] See Figure 3 The two ends of the housing 1 are respectively equipped with disconnecting switch mechanism 1 7 and disconnecting switch mechanism 2 8, which are connected to three-position disconnecting switch 1 4 and three-position disconnecting switch 2 5 respectively.

[0045] See Figure 4One end of the housing 1 is equipped with a circuit breaker mechanism 9, which is sealed to the circuit breaker body 6 through a dynamic seal of the circuit breaker.

[0046] See Figure 4 The ejector bushing assembly 10 includes three ejector bushings 1001. An upper busbar 1002 is installed at the bottom end of the ejector bushing 1001. The upper busbar 1002 is connected to the corresponding end of the three-position disconnector switch 4 through the copper busbar 4 16.

[0047] See Figure 4 The ejector bushing assembly 21 includes three ejector bushings 2101. The bottom end of the ejector bushing 2101 is equipped with an upper busbar 2102. The upper busbar 2102 is connected to the corresponding end of the three-position disconnector switch 25 through copper busbar 5 17.

[0048] See Figure 4 The lower inner cone sleeve group 12 includes multiple lower inner cone sleeves 1201. The tops of the multiple lower inner cone sleeves 1201 are fixedly connected by a lower busbar 1202. The lower busbar 1202 is connected to the outgoing terminal of the circuit breaker body 6 through a copper busbar 3 15.

[0049] In use: Three-position disconnect switch 1 4, three-position disconnect switch 2 5, and circuit breaker body 6 are installed in the enclosure 1, and are correspondingly connected to the top bushing group 10, top bushing group 2 11, and through-wall bushing 3. They are controlled by disconnect switch mechanism 1 7, disconnect switch mechanism 2 8, and circuit breaker mechanism 9, and are connected to the bottom inner cone bushing 1201 and the bottom busbar 1202. When one of the busbars fails or needs to be repaired, the power supply and the load of each circuit are distributed to other busbars to maintain the continuity of the equipment circuit and quickly restore power supply. Moreover, it can carry out maintenance in turn without power interruption, ensuring stable power supply to the equipment. At the same time, the power supply and the load of each circuit can be arbitrarily and evenly distributed to a certain busbar. It can also adapt to the needs of scheduling and power flow changes in various operating modes in the system, greatly improving the scheduling flexibility. Furthermore, the expansion of the bidirectional busbar in any direction will not affect the even distribution of power supply and load of the two busbars, making the expansion of the equipment more convenient.

[0050] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A stable power supply double busbar high current switch gas tank, comprising a tank body (1), characterized in that: The box (1) is internally fixedly installed with a mounting rack (2), three wall bushings (3) are arranged on the mounting rack (2), three-position disconnectors one (4) and three-position disconnectors two (5) are respectively installed on the inner walls of the two ends of the box (1), a circuit breaker body (6) is installed on the inner wall of one end of the box (1), a top bushing group one (10) and a top bushing group two (11) are arranged on the top of the box (1), three groups of lower inner cone bushing groups (12) are arranged on the bottom of the box (1), a copper bar one (13) is installed at the top of the wall bushing (3), the two ends of the copper bar one (13) are respectively connected with the corresponding ends of the three-position disconnectors one (4) and the three-position disconnectors two (5), the bottom of the wall bushing (3) is connected with the line-in end of the circuit breaker body (6) through a copper bar two (14), and the line-out end of the circuit breaker body (6) is connected with the corresponding lower inner cone bushing group (12) through a copper bar three (15).

2. The stably powered double bus large current switch gas tank according to claim 1, characterized in that: The three-position disconnectors one (4) and the three-position disconnectors two (5) are located above the mounting rack (2), and the circuit breaker body (6) is located below the mounting rack (2).

3. The stably powered double bus high current switching gas tank according to claim 1, characterized in that: The two ends of the box (1) are respectively provided with a disconnector mechanism one (7) and a disconnector mechanism two (8), and the disconnector mechanism one (7) and the disconnector mechanism two (8) are connected with the three-position disconnectors one (4) and the three-position disconnectors two (5) respectively.

4. The stably powered double bus high current switching gas tank according to claim 1, characterized in that: One end of the box (1) is provided with a circuit breaker mechanism (9), and the circuit breaker mechanism (9) is sealingly connected with the circuit breaker body (6) through a circuit breaker dynamic seal.

5. The stably powered double bus high current switching gas tank according to claim 1, characterized in that: The top bushing group one (10) comprises three top bushings one (1001), the bottom end of the top bushing one (1001) is provided with an upper bus one (1002), and the upper bus one (1002) is connected with the corresponding end of the three-position disconnectors one (4) through a copper bar four (16).

6. A stable power supply double busbar high current switch gas tank according to claim 1, characterized in that: The top bushing group two (11) comprises three top bushings two (1101), the bottom end of the top bushing two (1101) is provided with an upper bus two (1102), and the upper bus two (1102) is connected with the corresponding end of the three-position disconnectors two (5) through a copper bar five (17).

7. The stably powered double bus high current switching gas tank according to claim 1, characterized in that: The lower inner cone bushing group (12) comprises a plurality of lower inner cone bushings (1201), the plurality of lower inner cone bushings (1201) are fixedly connected through a lower bus (1202) between the tops of the lower inner cone bushings (1201), and the lower bus (1202) is connected with the line-out end of the circuit breaker body (6) through the copper bar three (15).

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