Transformer substation fire prevention system

Abstract

The utility model discloses a transformer station fire prevention system, comprising a plurality of fire prevention units, each fire prevention unit comprises firewalls arranged at two ends of electrical equipment, a portal frame is arranged above the firewalls, adjacent fire prevention units share one firewall, and the adjacent fire prevention units and the portal frame above form an M-shaped structure; according to the fireproof system of the transformer station, the firewall is arranged to isolate a fire source and prevent fire disasters for electrical equipment, the portal frame used for supporting the flexible bus is arranged above the firewall to form the fireproof units, and the plurality of fireproof units are arranged adjacently and parallelly, so that the spatial layout is more reasonable, the structure is more compact, and the fireproof effect is better. The occupied space is smaller, the assembly is faster, and the construction cost is low.

Description

Technical Field

[0001] The utility model relates to the field of electric power equipment, in particular to a fire protection system for a transformer substation. Background Art

[0002] With the rapid development of urban construction and power grids, the construction of substations is also developing continuously. According to the requirements of energy conservation, environmental protection, earthquake resistance and standardization in substation construction, through research and application, the modular construction of substations conforms to the concept of environmental protection, innovation and green development, which is conducive to improving the quality and efficiency of substation construction. The steel frame and firewall in the substation play a vital role. The steel frame serves as the supporting structure for the incoming, outgoing and internal conductors of the substation. Its main function is to support the soft busbar between electrical equipment. The function of the firewall is to effectively isolate the fire source, prevent the fire from spreading inside the substation or between external buildings, and protect the safety of important equipment and personnel.

[0003] In the prior art, after setting up firewalls for electrical equipment, it is necessary to add steel frames elsewhere on site to support the flexible busbars between the electrical equipment. This makes the layout of the firewalls and steel frames on site more complicated, inconvenient for on-site construction and assembly, and occupies a large space, resulting in a waste of land resources and high construction costs.

[0004] Therefore, there is an urgent need to develop a substation fire protection system. While setting up fire walls to isolate fire sources for electrical equipment and prevent fires, the spatial layout of the steel frame installation can be more reasonable, and the structure used in conjunction with the fire walls can be more compact, avoiding excessive space occupation and waste of land resources, making assembly faster and reducing construction costs. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a substation fire protection system. While setting up a fire wall to isolate the fire source for electrical equipment and prevent fire, a gantry for supporting the flexible busbar is set above the fire wall to form a fire protection unit. Several fire protection units are adjacent and arranged in parallel, so that the spatial layout is more reasonable, the structure is more compact, the space occupancy is less, the assembly is faster, and the construction cost is low.

[0006] The substation fire protection system of the present invention includes several fire protection units, each of which includes a fire wall arranged at both ends of the electrical equipment. A gantry is provided above the fire wall. Adjacent fire protection units share one fire wall and form an M-shaped structure with the gantry above.

[0007] Furthermore, the gantry includes two A-shaped support columns, each of which has a support foot formed at the bottom for connecting to the edge of the same side of the top of the firewall. A truss beam is connected between the two support columns, and the truss beam is used to provide support for the soft busbar of the electrical equipment.

[0008] Furthermore, embedded parts are provided on the top of the firewall corresponding to the legs of the supporting columns, and the embedded parts are used to connect the legs to the top of the firewall so that the supporting columns are located above the firewall.

[0009] Furthermore, a plurality of fixing rings connected to the flexible busbar connection ends are provided on both sides of the truss beam along the length direction.

[0010] Furthermore, a double string of insulators is provided between the fixing ring and the flexible busbar connection end.

[0011] Furthermore, the transverse thickness of the fire wall is greater than the transverse thickness of the supporting column.

[0012] Furthermore, the gantry is located above the firewall and close to the edge of the firewall.

[0013] Beneficial effects of the present invention: The substation fire protection system of the present invention, while setting up a fire wall to isolate the fire source for electrical equipment and prevent fire, is provided with a gantry for supporting the soft busbar above the fire wall to form a fire protection unit. Several fire protection units are adjacent and arranged in parallel, so that the spatial layout is more reasonable, the structure is more compact, the space occupied is less, the assembly is faster, and the construction cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the structure of a single fire protection unit of the present utility model;

[0016] Figure 2 This is a schematic diagram of the assembly layout of the present utility model.

[0017] Numbers in the figure: 1. Firewall; 2. Support column; 3. Truss beam; 4. Fixing ring; 5. Embedded parts; 6. Support leg; 7. Electrical equipment; 8. Double-string insulator; 9. Flexible busbar. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0020] Figure 1 This is a schematic diagram of the structure of a single fire protection unit of the utility model. Figure 2 The assembly layout diagram of the present invention is shown in the figure: the substation fire protection system of this embodiment includes several fire protection units, which include fire walls 1 arranged at both ends of the electrical equipment 7. A gantry is provided above the fire wall 1. Adjacent fire protection units share one fire wall 1 and form an M-shaped structure with the gantry above; the electrical equipment 7 refers to equipment used for power generation, transmission, distribution, power conversion and power use in the power system. They can be single equipment or a combination of multiple equipment. There are many types of electrical equipment 7, including but not limited to transformers, distribution cabinets, circuit breakers, contactors, etc.; the fire wall 1 mainly refers to the wall structure used for fire separation in the design of the substation, and its function is to prevent the spread of fire and protect the safety of important equipment and buildings in the substation; the gantry generally refers to a gantry structure composed of two columns and a crossbeam, which is similar in shape to a door frame, such as Figure 2 As shown, adjacent fire protection units share a fire wall 1.

[0021] In this embodiment, the gantry includes two A-shaped support columns 2, each of which has a foot 6 formed at the bottom thereof for connection to the top edge of the firewall 1 on the same side. A truss beam 3 is connected between the two support columns 2, and the truss beam 3 is used to support the flexible busbar 9 of the electrical equipment 7. The A-shaped support columns 2 can effectively disperse and transfer the load, thereby ensuring the stability and integrity of the building or structure.

[0022] In this embodiment, an embedded part 5 is provided at the top of the firewall 1 corresponding to the support leg 6 of the supporting column 2. The embedded part 5 is used to connect the support leg 6 to the top of the firewall 1, so that the supporting column 2 is located above the firewall 1; the embedded part 5 refers to a component that is pre-reserved on the top of the firewall 1 before the firewall 1 is cast. It is generally composed of a steel plate, anchor bars and steel bars. It is mainly used for connecting structural components or non-structural components for fixing purposes. When the firewall 1 is cast, the supporting column 2 is hoisted to the top of the firewall 1 and connected to the support leg 6 of the supporting column 2 through the embedded part 5, so that the supporting column 2 is located above the firewall 1. The connection method between the support leg 6 of the supporting column 2 and the embedded part 5 can be bolt connection, or other mechanical connection methods can be used, which will not be repeated here.

[0023] In this embodiment, the truss beam 3 is provided with a plurality of fixing rings 4 connected to the connection ends of the flexible busbar 9 on both sides along the length direction; Figure 1 As shown, multiple fixing rings 4 are arranged on both sides of the length direction of the truss beam 3, which can ensure that the truss beam 3 has more support points for the soft busbar 9 and the best fixing ring 4 is selected for use according to the position of the soft busbar 9 between different electrical equipment 7.

[0024] In this embodiment, a double-string insulator 8 is further provided between the fixing ring 4 and the connection end of the flexible busbar 9; the double-string insulator 8 refers to a configuration in which two insulator strings are used in parallel in a transmission line in order to improve the safety and reliability of the line. This design can increase the transmission line's tolerance to faults and reduce the risk of line power outages caused by single-piece insulator failures.

[0025] In this embodiment, the transverse thickness of the fire wall 1 is greater than the transverse thickness of the supporting columns 2; the transverse thickness refers to the thickness of the fire wall 1 and the supporting columns 2 in the width direction of the fire wall 1 wall. The larger transverse thickness of the fire wall 1 wall can provide greater lateral stability, especially in high-rise buildings or areas with large wind loads. Increasing the wall thickness helps to improve the structure's anti-lateral displacement and wind pressure resistance, improve the fire wall 1's ability to block the spread of fire, and improve the fire resistance limit of the fire wall 1. The thicker fire wall 1 wall can provide an additional protective layer for the supporting columns 2, reduce thermal damage to the columns during a fire, and maintain the integrity and safety of the structure. The increased thickness of the fire wall 1 wall can also ensure the structural stability of the supporting columns 2, provide a larger supporting base for the supporting columns 2, reduce structural shaking, and improve safety.

[0026] In this embodiment, the gantry is located above the firewall 1 and close to the edge of the firewall 1; arranging the legs on one side of the top of the firewall 1 can provide better structural stability; arranging the legs at the edge of the top of the firewall 1 can increase the span of the gantry, thereby improving its overall stability, providing a larger support base and better lateral support, reducing the risk of gantry tilting caused by lateral loads (such as wind loads), reducing eccentricity and bending moment caused by loads, reducing the pressure of the gantry as a whole on the central area of ​​the firewall 1, avoiding structural damage caused by concentrated loads, thereby protecting the structural integrity of the firewall 1, improving the safety of the overall structure, and leaving more space for the top central area of ​​the firewall 1, facilitating construction and maintenance operations.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A substation fire protection system, characterized by: It includes several fire protection units, each of which includes a fire wall arranged at both ends of the electrical equipment. A gantry is arranged above the fire wall. Adjacent fire protection units share one fire wall and form an M-shaped structure with the gantry above.

2. The substation fire protection system according to claim 1, characterized in that: The gantry includes two A-shaped support columns, each of which has a foot at the bottom for connecting to the edge of the same side of the top of the firewall. A truss beam is connected between the two support columns, and the truss beam is used to provide support for the soft busbar of the electrical equipment.

3. The substation fire protection system according to claim 2, characterized in that: The top of the firewall is provided with embedded parts corresponding to the legs of the supporting columns. The embedded parts are used to connect the legs to the top of the firewall so that the supporting columns are located above the firewall.

4. The substation fire protection system according to claim 2, characterized in that: The truss beam is provided with a plurality of fixing rings connected to the flexible busbar connection ends on both sides along the length direction.

5. The substation fire protection system according to claim 4, characterized in that: A double string of insulators is also provided between the fixing ring and the flexible busbar connection end.

6. The substation fire protection system according to claim 2, characterized in that: The transverse thickness of the fire wall is greater than the transverse thickness of the supporting column.

7. The substation fire protection system according to claim 1, characterized in that: The gantry is located above the firewall and close to the edge of the firewall.

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