Outdoor pole-mounted integrated dual power supply hard interlocking structure circuit breaker

Abstract

An outdoor pole-mounted integrated dual-power hard-interlocking circuit breaker belongs to the field of high-voltage switch technology for power system power supply and distribution. The commonly used and spare conductive electrodes are fixedly mounted on an integrated housing. The commonly used electrode has a commonly used input terminal, and the spare electrode has a spare input terminal. The commonly used and spare electrodes are connected via output terminals. One end of an electronic sensor is connected to the output arm on the spare electrode, and the other end is connected to the integrated housing. The integrated housing houses a commonly used mechanism and a spare mechanism. The commonly used mechanism is connected to the commonly used electrode via an insulating rod, and the spare mechanism is connected to the spare electrode via an insulating rod. A commonly used spindle is mounted on the commonly used mechanism. This invention is smaller, simpler in structure, saves materials, has high reliability and accuracy, and is maintenance-free and easy to operate.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage switch technology for power system power supply and distribution, and specifically relates to an outdoor pole-mounted integrated dual-power hard interlocking structure circuit breaker. Background Technology

[0002] In recent years, vacuum high-voltage switchgear dual power supply devices have emerged and have been successfully applied in power systems due to their simple structure, few parts, high reliability, high precision, and long service life. Currently, the structure of vacuum high-voltage switchgear dual power supply devices is developing towards diversification, and numerous patented technologies have promoted continuous improvement in this technology. While these patented technologies are relatively advanced, their manufacturing processes and assembly are complex, especially the interlocking parts during closing, which has become a major bottleneck for current products. Large design sizes waste raw materials and are cumbersome and labor-intensive. Currently, domestic manufacturers mainly use separate installations. This method requires a large space, hindering miniaturization; secondly, in case of failure, the entire assembly needs to be replaced, leading to errors in subsequent coordination; thirdly, the closing interlocking is unreliable, posing safety risks to equipment and personnel; and fourthly, the precision of existing technologies is unstable, with frequent failures to close, rendering the backup power supply ineffective and seriously affecting the use of electrical equipment. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes an outdoor pole-mounted integrated dual-power hard-interlock circuit breaker, comprising an output terminal, a common input terminal, a common spindle, a common spindle baffle, a spare spindle baffle, a spare spindle, an integrated housing, an electronic sensor, a spare input terminal, a common conductive electrode post, a spare conductive electrode post, a common mechanism, a spare mechanism, a common interlocking shaft, and a spare interlocking shaft. The common and spare conductive electrode posts are fixedly mounted on the integrated housing. The common conductive electrode post has a common input terminal, and the spare conductive electrode post has a spare input terminal. The common and spare conductive electrode posts are connected via an output terminal. One end of the electronic sensor is connected to the lead-out arm on the spare conductive electrode post, and the other end of the electronic sensor is connected to the integrated housing. The integrated housing contains a normal mechanism and a spare mechanism. The normal mechanism is connected to the normal conductive electrode post via an insulating pull rod, and the spare mechanism is connected to the spare conductive electrode post via an insulating pull rod. The normal mechanism is equipped with a normal main shaft, and the spare mechanism is equipped with a spare main shaft. The normal main shaft is connected to the normal interlocking shaft via a normal main shaft baffle, and the spare main shaft is connected to the spare interlocking shaft via a spare main shaft baffle. The normal interlocking shaft is connected to the normal mechanism closing latch of the normal mechanism, and the spare interlocking shaft is connected to the spare mechanism closing latch of the spare mechanism.

[0004] The beneficial effects of this invention are as follows: This invention is smaller in size, simpler in structure, saves materials, has high reliability and accuracy, and is maintenance-free and easy to operate; This technology solves the problem of the original ground-mounted handcart tripping interlock by installing the tripping interlock separately, which effectively ensures accurate tripping and service life, and avoids the need to replace the entire interlock circuit when a single component fails. By adopting this technology, the probability of component damage can be reduced, space can be reduced, and tripping reliability and operational safety can be increased. Attached Figure Description

[0005] Figure 1 This is a structural diagram of the outdoor pole-mounted integrated dual-power hard interlocking circuit breaker of the present invention.

[0006] Figure 2 This is a schematic diagram of the internal structure of the outdoor pole-mounted integrated dual-power hard interlocking circuit breaker of the present invention.

[0007] Figure 3 This is a schematic diagram of the spare pin hole of the present invention;

[0008] Figure 4 This is an enlarged structural diagram of the commonly used mechanism in this invention.

[0009] The attached diagram is labeled as follows: 1. Outgoing terminal; 2. Commonly used incoming terminal; 3. Commonly used spindle; 4. Commonly used spindle baffle; 5. Spare spindle baffle; 6. Spare spindle; 7. Integrated housing; 8. Electronic voltage sensor; 9. Electronic current sensor; 10. Spare incoming terminal; 11. Commonly used conductive electrode post; 12. Commonly used mechanism closing lever; 13. Commonly used mechanism; 14. Commonly used interlocking shaft; 15. Spare conductive electrode post; 16. Spare mechanism closing lever; 17. Spare mechanism; 18. Commonly used pin hole; 19. Spare pin hole; 20. Spare interlocking shaft. Detailed Implementation

[0010] An outdoor pole-mounted integrated dual-power hard interlocking circuit breaker, such as Figures 1-4As shown, the device includes an output terminal 1, a standard input terminal 2, a standard spindle 3, a standard spindle baffle 4, a spare spindle baffle 5, a spare spindle 6, an integrated housing 7, an electronic sensor, a spare input terminal 10, a standard conductive electrode post 11, a spare conductive electrode post 15, a standard mechanism 13, a spare mechanism 17, a standard interlocking shaft 14, and a spare interlocking shaft 20. The standard conductive electrode post 11 and the spare conductive electrode post 15 are fixedly mounted on the integrated housing 7. The standard conductive electrode post 11 has a standard input terminal 2, and the spare conductive electrode post 15 has a spare input terminal 10. The standard conductive electrode post 11 and the spare conductive electrode post 15 are connected through the output terminal 1. One end of the electronic sensor is connected to the output arm on the spare conductive electrode post 15. The other end of the electronic sensor is connected to the integrated housing 7. The integrated housing 7 houses a standard mechanism 13 and a backup mechanism 17. The standard mechanism 13 is connected to the standard conductive electrode post 11 via an insulating pull rod. The backup mechanism 17 is connected to the backup conductive electrode post 15 via an insulating pull rod. The standard mechanism 13 has a standard spindle 3, and the backup mechanism 17 has a backup spindle 6. The standard spindle 3 is connected to the standard interlocking shaft 14 via a standard spindle baffle 4, and the backup spindle 6 is connected to the backup interlocking shaft 20 via a backup spindle baffle 5. The standard interlocking shaft 14 is connected to the standard mechanism closing latch 12 of the standard mechanism 13, and the backup interlocking shaft 20 is connected to the backup mechanism closing latch 16 of the backup mechanism 17. The conductive electrode post is a known existing product, and the insulating pull rod is a mechanical structure within the conductive electrode post.

[0011] The electronic sensors include an electronic voltage sensor 8 and an electronic current sensor 9. The electronic voltage sensor 8 is model EVT, and the electronic current sensor 9 is model ECT.

[0012] Among them, the electronic current sensor 9 is provided with a through hole, which is sleeved on the lead arm of the spare conductive electrode post 15. The integrated housing 7 is provided with a corresponding mounting hole. The electronic voltage sensor 8 is fixedly connected to the mounting hole of the integrated housing 7 through the lower bent tube.

[0013] The commonly used conductive electrode post 11 and the spare conductive electrode post 15 are both of model ZW32. The commonly used conductive electrode post 11 and the spare conductive electrode post 15 are equipped with vacuum interrupting chambers. The interrupting chambers are connected to the insulating tie rods, and the insulating tie rods are connected to the commonly used spindle 3 and the spare spindle 3.

[0014] The commonly used mechanism 13 and the backup mechanism 17 are both CTD models.

[0015] The integrated housing 7 is made of stainless steel, and the conductive electrode post 11 is connected to the integrated housing 7 by bolts.

[0016] The common mechanism 13 is provided with a common pin hole 18, the spare mechanism 17 is provided with a spare pin hole 19, the common interlocking shaft 14 passes through the common pin hole 18 and is connected to the common mechanism closing lever 12, or the spare interlocking shaft 20 passes through the spare pin hole 19 and is connected to the spare mechanism closing lever 16.

[0017] The commonly used spindle 3 is fixedly equipped with a commonly used spindle baffle 4, and the spare spindle 6 is fixedly equipped with a spare spindle baffle 5. The commonly used spindle baffle 4 is fixedly connected to the commonly used interlocking shaft 14, and the spare spindle baffle 5 is fixedly connected to the spare interlocking shaft 20.

[0018] The commonly used conductive electrode post 11 is mounted on the integrated housing 7. The commonly used conductive electrode post 11 contains a vacuum interrupter chamber. The interrupter chamber is connected to the insulating pull rod, and the insulating pull rod is connected to the commonly used main shaft 3. It is used to control the opening and closing of the circuit breaker, that is, to conduct or disconnect.

[0019] The integrated housing 7 is made of stainless steel, which is resistant to deformation and environmental corrosion.

[0020] The standby mechanism can also be understood as a standby switch, which means that the switch is in the open state during normal power supply and is guaranteed not to be closed to prevent the line from being energized and causing an accident; when the normal interlocking shaft 14 pushes the normal mechanism closing lever 12, the normal mechanism 13 closes and the standby mechanism 17 opens; when the standby interlocking shaft 20 pushes the standby mechanism closing lever 16, the standby mechanism 17 closes and the normal mechanism 13 opens.

[0021] The standby mechanism 17 and the regular mechanism 13 are installed in their respective positions. When the regular mechanism 13 is closed, the standby main shaft 6 drives the standby main shaft baffle 5 to push the standby interlocking shaft 20 to the standby mechanism closing lever 16, and the standby mechanism 17 closes, forcibly preventing the regular mechanism 13 from closing. The closing process of the regular mechanism 13 is the same.

[0022] The commonly used pin hole 18 and the spare pin hole 19 serve as guides and supports for the commonly used interlocking shaft 14 and the spare interlocking shaft 20, respectively.

[0023] The aforementioned integrated housing contains two mechanisms and has conductive electrode posts 11 on the outside, ensuring that the connection and interlocking are achieved inside the housing and will not rust or malfunction due to external influences.

[0024] The above-mentioned integrated dual-power hard interlocking structure circuit breaker interlocking control ensures that if one circuit breaker is closed, the other cannot be closed, thus preventing simultaneous power supply from both circuits.

[0025] The aforementioned integrated dual-power hard interlocking circuit breaker is commonly used with standby interlocking. The main shaft baffle drives the interlocking shaft to hold the closing lever of the mechanism, preventing it from rotating to close the circuit. This is a hard interlocking device.

[0026] The aforementioned electronic voltage sensor 8 is used for collecting voltage signals for differentiation, as well as for backup and switching purposes. The electronic current sensor 9 is used to provide a tripping signal to the circuit breaker when a fault occurs.

[0027] The aforementioned conductive electrode posts are waterproof and fully meet the requirements of power grid equipment;

[0028] This technology solves the problem of the original ground-mounted handcart tripping interlock by installing the tripping interlock separately, effectively ensuring accurate tripping and service life. It avoids the need to replace the entire interlock circuit when a single component fails. Using this technology can reduce the probability of component damage, reduce space requirements, and increase tripping reliability and operational safety.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An outdoor pole-mounted integrated dual-power hard interlocking circuit breaker, characterized in that, The system includes an output terminal (1), a common input terminal (2), a common spindle (3), a common spindle baffle (4), a spare spindle baffle (5), a spare spindle (6), an integrated housing (7), an electronic sensor, a spare input terminal (10), a common conductive electrode post (11), a spare conductive electrode post (15), a common mechanism (13), a spare mechanism (17), a common interlocking shaft (14), and a spare interlocking shaft (20). The common conductive electrode post (11) and the spare conductive electrode post (15) are fixedly mounted on the integrated housing (7). The common conductive electrode post (11) is provided with a common input terminal (2), and the spare conductive electrode post (15) is provided with a spare input terminal (10). The common conductive electrode post (11) and the spare conductive electrode post (15) are connected through the output terminal (1). One end of the electronic sensor is connected to the output arm on the spare conductive electrode post (15). The other end of the electronic sensor is connected to the integrated housing (7). The integrated housing (7) is equipped with a common mechanism (13) and a spare mechanism (17). The common mechanism (13) is connected to the common conductive electrode post (11) through an insulating rod. The spare mechanism (17) is connected to the spare conductive electrode post (15) through an insulating rod. The common mechanism (13) is equipped with a common spindle (3). The spare mechanism (17) is equipped with a spare spindle (6). The common spindle (3) is connected to the common interlocking shaft (14) through the common spindle baffle (4). The spare spindle (6) is connected to the spare interlocking shaft (20) through the spare spindle baffle (5). The common interlocking shaft (14) is connected to the common mechanism closing lever (12) of the common mechanism (13). The spare interlocking shaft (20) is connected to the spare mechanism closing lever (16) of the spare mechanism (17). The electronic sensors include an electronic voltage sensor (8) and an electronic current sensor (9). The model of the electronic voltage sensor (8) is EVT, and the model of the electronic current sensor (9) is ECT. The electronic current sensor (9) has a through hole, which is fitted onto the lead arm of the spare conductive electrode post (15). The integrated housing (7) has a corresponding mounting hole. The electronic voltage sensor (8) is fixedly connected to the mounting hole of the integrated housing (7) through the lower bent tube. The commonly used conductive electrode post (11) and the spare conductive electrode post (15) are both of model ZW32. The commonly used conductive electrode post (11) and the spare conductive electrode post (15) are equipped with vacuum interrupters. The vacuum interrupters are connected to the insulating tie rods. The insulating tie rods are connected to the commonly used spindle (3) and the spare spindle (6). The integrated housing (7) is made of stainless steel, and the commonly used conductive electrode post (11) is connected to the integrated housing (7) by bolts; The common mechanism (13) is provided with a common pin hole (18), the spare mechanism (17) is provided with a spare pin hole (19), the common interlocking shaft (14) passes through the common pin hole (18) and is connected to the common mechanism closing lever (12), or the spare interlocking shaft (20) passes through the spare pin hole (19) and is connected to the spare mechanism closing lever (16). The commonly used spindle (3) is fixedly equipped with a commonly used spindle baffle (4), and the spare spindle (6) is fixedly equipped with a spare spindle baffle (5). The commonly used spindle baffle (4) is fixedly connected to the commonly used interlocking shaft (14), and the spare spindle baffle (5) is fixedly connected to the spare interlocking shaft (20).

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