A gas-insulated metal-enclosed high-voltage switchgear

Abstract

The utility model provides a gas-insulated metal-enclosed high-voltage switchgear, including a mechanism room, an instrument room is arranged in the mechanism room, an air pressure release channel is arranged on the side of the mechanism room, and a fan transformer side cable room is arranged on the right side of the air pressure release channel. The utility model can effectively avoid the dangers that may be caused by excessive internal air pressure by arranging the air pressure release channel. At the same time, the arrangement of the lightning arrester can effectively prevent damage to the equipment by lightning, and improve the safety performance of the equipment. The heat sink arranged on the rear side of the mechanism room can effectively reduce the temperature inside the equipment, ensure the stable operation of the equipment, and extend the service life of the equipment. The insulating sleeve extended by the lightning arrester is made of insulating ceramic material, which can effectively prevent current leakage and improve the safety of the equipment. The locking electromagnetic lock arranged on the isolating switch can prevent misoperation and improve the safety of equipment operation. At the same time, it is also convenient to remotely control and monitor the equipment.

Description

Technical Field

[0001] The utility model relates to the field of high-voltage switch cabinets, and in particular to a gas-insulated metal-enclosed high-voltage switch cabinet. Background Art

[0002] In the operation of the power system, switchgear plays a vital role. However, traditional switchgear often has problems such as complex structure, difficult installation and maintenance, and insufficient safety performance, especially in high-voltage, large-capacity power transmission and distribution occasions. In order to solve these problems, indoor gas-insulated metal-enclosed switchgear came into being and became an important part of the power system.

[0003] A fully enclosed operating room and a switch cabinet with the operating room proposed in Chinese patent application number: CN202011328662.3, including a box body, and a circuit breaker operating mechanism and a disconnector operating mechanism arranged in the box body; the box body includes a side plate frame and a front sealing plate, the side plate frame is suitable for sealing and fixing to the front side of the air chamber, and the front sealing plate is sealed and covered on the front side of the side plate frame; the circuit breaker operating mechanism and the disconnector operating mechanism are both provided with multiple operating positions, the front sealing plate is provided with multiple operating holes corresponding to the operating positions, and a sealing coupling assembly is arranged in the operating hole; the sealing coupling assembly includes an operating member, a perforation kit and a drive shaft. It has good sealing performance and is easy to assemble.

[0004] Although the existing switchgear has met the needs of the power system to a certain extent, it still exposes some shortcomings in the actual application process and urgently needs technical improvement and optimization. In particular, the safety and stability of high-voltage switchgear are crucial due to the particularity of the working environment. However, during use, this type of equipment sometimes has an internal air pressure that is too high, which may not only affect the normal operation of the equipment, but also cause safety hazards and pose a potential threat to personnel and equipment. In addition, the existing switchgear also has great challenges in installation and post-maintenance. Due to its complex structure and numerous components, the installation process is often cumbersome and time-consuming, which not only increases the construction cost, but also affects the construction progress of the power system. At the same time, post-maintenance also faces difficulties, requiring professional technicians to conduct regular inspections and maintenance. Once a fault occurs, the maintenance work is also more complicated. More seriously, the existing switchgear sometimes leaks current during operation. This not only affects the normal operation of the equipment, but also may cause electromagnetic pollution to the surrounding environment and pose a threat to personnel safety. In addition, due to improper operation or equipment design defects, misoperation also occurs from time to time, which may not only cause equipment damage, but also cause power accidents and serious consequences. Therefore, we made improvements to this and proposed a gas-insulated metal-enclosed high-voltage switchgear. Utility Model Content

[0005] The purpose of the utility model is to address the problems raised by the existing background technology. In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions: a gas-insulated metal-enclosed high-voltage switchgear, including a mechanism room, a base is arranged below the mechanism room, an instrument room is arranged inside the mechanism room, an air pressure release channel is arranged on the side of the mechanism room, a fan transformer side cable room is arranged on the right side of the air pressure release channel, a collector line side cable room is arranged below the fan transformer side cable room, a heat sink is arranged on the rear side of the mechanism room, a transformer side cable is arranged inside the mechanism room, and a lightning arrester is arranged on the right side of the transformer side cable.

[0006] As a preferred technical solution of the utility model, the transformer-side cable is connected to an upper cable box, and a positioning hole is provided on the upper cable box.

[0007] As a preferred technical solution of the utility model, an air box pressure relief box is arranged on the side of the upper cable box, and an air box is arranged below the air box pressure relief box.

[0008] As a preferred technical solution of the utility model, the lightning arrester is extended and connected with an insulating sleeve, and the insulating sleeve is made of insulating ceramic material.

[0009] As a preferred technical solution of the utility model, the transformer-side cable is connected to the vacuum circuit breaker through an upper cable box.

[0010] As a preferred technical solution of the utility model, the lightning arrester is connected to a fast grounding switch, and the fast grounding switch is connected to a ground wire.

[0011] As a preferred technical solution of the present utility model, the vacuum circuit breaker is connected to the isolating switch.

[0012] As a preferred technical solution of the utility model, a collector line side cable is arranged in the collector line side cable room.

[0013] As a preferred technical solution of the utility model, the collector side cable is inserted into the lower cable chamber.

[0014] As a preferred technical solution of the utility model, a locking electromagnetic lock is provided on the isolating switch.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: In the scheme of the utility model: the utility model adopts modularization, and various parts such as the mechanism room, the instrument room, the air pressure release channel, etc. are independent of each other but interconnected, making the installation and subsequent maintenance of the equipment simple and convenient, and improving work efficiency.

[0016] The utility model is provided with an air pressure release channel, which can effectively avoid the danger caused by excessive internal air pressure. At the same time, the arrangement of the lightning arrester can effectively prevent lightning damage to the equipment, thereby improving the safety performance of the equipment. The heat sink arranged at the rear side of the mechanism room can effectively reduce the temperature inside the equipment, ensure the stable operation of the equipment, and extend the service life of the equipment.

[0017] The cable on the transformer side is connected to the upper cable box and accurately positioned through the positioning holes to ensure the stability and accuracy of the cable connection. The insulated bushing of the lightning arrester extension connection is made of insulating ceramic material, which has good insulation properties, can effectively prevent current leakage and improve the safety of the equipment.

[0018] The transformer side cable is connected to the vacuum circuit breaker through the upper cable box, the arrester is connected to the fast grounding switch and the ground wire, and the vacuum circuit breaker is connected to the disconnector. These electrical connections are reasonable, ensuring the stability and reliability of the electrical performance of the equipment. The collector side cable is set in the cable room on the collector line side, and the collector side cable is inserted into the lower cable room, which optimizes the layout of the cable and makes the cable management and maintenance more convenient.

[0019] The locking electromagnetic lock installed on the isolating switch can prevent misoperation and improve the safety of equipment operation. At the same time, it is also convenient for remote control and monitoring of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure provided by the utility model;

[0021] Figure 2 A schematic diagram of the main structure provided by the utility model;

[0022] Figure 3 A schematic diagram of the internal structure provided by the utility model;

[0023] Figure 4 A schematic diagram of the locking electromagnetic lock structure provided by the utility model;

[0024] Figure 5 This is a left-side structural schematic diagram provided by the utility model.

[0025] Indicated in the figure:

[0026] 1. Mechanism room; 2. Instrument room; 3. Air pressure release channel; 4. Cable room on the fan transformer side; 5. Cable room on the collector line side; 6. Base; 7. Cable on the transformer side; 8. Upper cable box; 9. Air box pressure relief box; 10. Air box; 11. Lightning arrester; 12. Insulation bushing; 13. Vacuum circuit breaker; 14. Quick earthing switch; 15. Disconnector; 16. Cable on the collector line side; 17. Lower cable room; 18. Locking electromagnetic lock; 19. Positioning hole. DETAILED DESCRIPTION

[0027] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0028] Therefore, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model for which protection is sought, but merely represents some embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. It should be noted that the embodiments of the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] Example 1: Please refer to Figure 1-Figure 5 A gas-insulated metal-enclosed high-voltage switchgear comprises a mechanism room 1, a base 6 is arranged below the mechanism room 1, an instrument room 2 is arranged inside the mechanism room 1, an air pressure release channel 3 is arranged on the side of the mechanism room 1, a fan transformer side cable room 4 is arranged on the right side of the air pressure release channel 3, a collector line side cable room 5 is arranged below the fan transformer side cable room 4, a heat sink is arranged on the rear side of the mechanism room 1, a transformer side cable 7 is arranged inside the mechanism room 1, and a lightning arrester 11 is arranged on the right side of the transformer side cable 7.

[0030] The transformer side cable 7 is connected to the upper cable box 8, and the upper cable box 8 is provided with a positioning hole 19. The side of the upper cable box 8 is provided with an air box 10 pressure relief box 9, and the air box 10 is provided below the air box 10 pressure relief box 9. The arrester 11 is extended and connected with an insulating sleeve 12, and the insulating sleeve 12 is made of insulating ceramic material. The transformer side cable 7 is connected to the vacuum circuit breaker 13 through the upper cable box 8. The arrester 11 is connected to the fast grounding switch 14, and the fast grounding switch 14 is connected to the ground wire. The vacuum circuit breaker 13 is connected to the disconnector 15. The collector line side cable 16 is provided in the collector line side cable chamber 5. The collector line side cable 16 is inserted into the lower cable chamber 17. The disconnector 15 is provided with a locking electromagnetic lock 18.

[0031] The switchgear is modularized, and the various parts such as the mechanism room 1, the instrument room 2, and the air pressure release channel 3 are independent of each other but interconnected, making the installation and subsequent maintenance of the equipment simple and convenient, and improving work efficiency. The equipment is provided with an air pressure release channel 3, which can effectively avoid the dangers that may be caused by excessive internal air pressure. At the same time, the setting of the lightning arrester 11 can effectively prevent damage to the equipment by lightning and improve the safety performance of the equipment. The heat sink set on the rear side of the mechanism room 1 can effectively reduce the temperature inside the equipment, ensure the stable operation of the equipment, and extend the service life of the equipment. The transformer side cable 7 is connected to the upper cable box 8 and is accurately positioned through the positioning hole 19 to ensure the stability and accuracy of the cable connection.

[0032] The insulating sleeve 12 connected to the lightning arrester 11 is made of insulating ceramic material, which has good insulation performance, can effectively prevent current leakage, and improve the safety of the equipment. The transformer side cable 7 is connected to the vacuum circuit breaker 13 through the upper cable box 8, the lightning arrester 11 is connected to the fast grounding switch 14 and the ground wire, and the vacuum circuit breaker 13 is connected to the isolation switch 15. These electrical connections are reasonable, ensuring the stability and reliability of the electrical performance of the equipment.

[0033] The collector line side cable 16 is arranged in the collector line side cable chamber 5, and the collector line side cable 16 is inserted into the lower cable chamber 17, which optimizes the cable layout and makes the cable management and maintenance more convenient. The locking electromagnetic lock 18 arranged on the isolating switch 15 can prevent misoperation and improve the safety of equipment operation. At the same time, it is also convenient to remotely control and monitor the equipment.

[0034] During use, the indoor gas-insulated metal-enclosed switchgear of the utility model mainly uses SF6 gas as an insulating medium, and ensures the operating reliability of the equipment through the excellent insulation performance, chemical stability and thermal conductivity of the gas. Key components inside the equipment, such as the vacuum circuit breaker 13, the disconnector 15 and the lightning arrester 11, are all in a closed metal casing to ensure the safety and stability of the operation.

[0035] Specific working process: Initial state: The equipment is in normal standby state, and all switches are in closed or preset positions. SF6 gas fills the inside of the equipment to maintain the insulation state of the equipment. The lightning arrester 11 is connected to the external line through the insulating sleeve 12 using insulating ceramic material to provide protection against lightning strikes.

[0036] When the circuit needs to be opened or closed, the action of the vacuum circuit breaker 13 is controlled by operating the relevant mechanism in the mechanism room 1. The vacuum circuit breaker 13 works in the insulating environment of SF6 gas, and its action is fast and accurate. The isolating switch 15 is mainly used to provide an obvious disconnection point during equipment overhaul or maintenance to ensure the safety of the staff. By operating the isolating switch 15, the equipment can be isolated from the power supply, which is convenient for overhaul work.

[0037] The arrester 11 can effectively absorb lightning energy during thunderstorms to prevent lightning shocks from damaging the equipment. The equipment monitors and adjusts the internal air pressure through the air pressure release channel 3 and the air box 10 pressure relief box 9. When the internal air pressure exceeds the preset value, the air pressure release channel 3 will automatically open and release part of the gas to ensure the safe operation of the equipment. At the same time, the air box 10 pressure relief box 9 also plays a role in regulating the air pressure to ensure the stability of the internal air pressure of the equipment.

[0038] The heat sink on the rear side of the mechanism room 1 can effectively reduce the temperature inside the equipment and ensure the stable operation of the equipment. At the same time, there are also multiple protection devices inside the equipment, such as overcurrent protection, overvoltage protection, etc., to ensure that the equipment can automatically cut off the power supply in abnormal situations to prevent damage.

[0039] When equipment fails, it can be replaced or repaired by operating related mechanisms and using spare equipment or spare lines. At the same time, the modularization of equipment makes maintenance work more convenient and can quickly locate and solve problems.

[0040] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. A gas-insulated metal-enclosed high-voltage switchgear, comprising a mechanism room (1), a base (6) being arranged below the mechanism room (1), an instrument room (2) being arranged in the mechanism room (1), characterized in that: An air pressure release channel (3) is arranged on the side of the mechanism chamber (1), a fan transformer side cable chamber (4) is arranged on the right side of the air pressure release channel (3), a collector line side cable chamber (5) is arranged below the fan transformer side cable chamber (4), a heat sink is arranged on the rear side of the mechanism chamber (1), a transformer side cable (7) is arranged inside the mechanism chamber (1), and a lightning arrester (11) is arranged on the right side of the transformer side cable (7).

2. A gas-insulated metal-enclosed high-voltage switchgear according to claim 1, characterized in that: The transformer-side cable (7) is connected to an upper cable box (8), and a positioning hole (19) is provided on the upper cable box (8).

3. A gas-insulated metal-enclosed high-voltage switchgear according to claim 2, characterized in that: An air box (10) and a pressure relief box (9) are arranged on the side of the upper cable box (8), and an air box (10) is arranged below the air box (10) and the pressure relief box (9).

4. A gas-insulated metal-enclosed high-voltage switchgear according to claim 1, characterized in that: The lightning arrester (11) is extended and connected to an insulating sleeve (12), and the insulating sleeve (12) is made of insulating ceramic material.

5. The gas-insulated metal-enclosed high-voltage switchgear according to claim 1, characterized in that: The transformer side cable (7) is connected to the vacuum circuit breaker (13) through an upper cable box (8).

6. A gas-insulated metal-enclosed high-voltage switchgear according to claim 4, characterized in that: The lightning arrester (11) is connected to a fast grounding switch (14), and the fast grounding switch (14) is connected to a ground wire.

7. A gas-insulated metal-enclosed high-voltage switchgear according to claim 5, characterized in that: The vacuum circuit breaker (13) is connected to the isolating switch (15).

8. The gas-insulated metal-enclosed high-voltage switchgear according to claim 1, characterized in that: The collector line side cable chamber (5) is provided with a collector line side cable (16).

9. A gas-insulated metal-enclosed high-voltage switchgear according to claim 8, characterized in that: The collector side cable (16) is inserted into the lower cable chamber (17).

10. The gas-insulated metal-enclosed high-voltage switchgear according to claim 7, characterized in that: The isolating switch (15) is provided with a locking electromagnetic lock (18).

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