A complete switchgear set with early warning and fire extinguishing function

Abstract

The application relates to the technical field of switch equipment, and discloses a complete switch equipment with a pre-warning and fire extinguishing function, which comprises a switch equipment shell and a ventilation hole, the ventilation hole is symmetrically arranged at the top of the switch equipment shell, a sealing assembly is arranged at the top of the inner cavity of the switch equipment shell, the sealing assembly comprises a limiting recessed guide rail which is fixedly connected to the inner wall of the switch equipment shell, a ventilation plate is arranged above the limiting recessed guide rail, and a pulley block is rotatably connected to the bottom of the ventilation plate; the memory metal phase change driving force is a single core power, the mechanical linkage is synchronously realized, the telescopic rotating rod is used for air isolation fire suppression, alarm triggering and dry powder fire extinguishing, no additional motor, electromagnetic valve and other driving components are needed, the function integration degree is higher, the memory metal phase change directly drives the mechanical action, the pulley block is used for drag reduction, speed increasing, energy storage and transmission, the ventilation hole is sealed, the alarm triggering and the fire extinguishing starting are all free of electrical delay.

Description

Technical Field

[0001] This invention relates to the field of switchgear, specifically to a complete set of switchgear with early warning and fire extinguishing functions. Background Technology

[0002] A complete switchgear is a power distribution and control center that assembles switches, protection devices, and other electrical appliances into a unified cabinet according to standards, and is used to safely receive and distribute electrical energy.

[0003] Most mainstream switchgear protection devices on the market typically only have a single prevention and control function. They either only trigger an alarm when a fire occurs, unable to actively intervene in the spread of the fire; or they are only equipped with a fire extinguishing module, lacking early warning and fire control mechanisms. Secondly, traditional devices generally rely on electrical drive components such as motors and solenoid valves to achieve core actions, and their startup and operation depend on electrical signal transmission and component response. In this process, the electrical control module is easily affected by signal transmission and component startup speed, resulting in significant delays in critical actions, failing to intervene quickly in the early stages of a fire, missing the best prevention and control opportunity, and exacerbating the risk of fire spread.

[0004] These devices exhibit low adaptability and operational reliability, coupled with high maintenance costs. They often integrate complex electrical control modules, resulting in a loose overall structure, large space occupation, and difficulty in flexibly adapting to different specifications of switchgear, thus limiting their applicability. Furthermore, the electrical components are highly sensitive to environmental conditions, easily malfunctioning due to factors such as dust accumulation and equipment vibration. In addition, their internal transmission and protection structures are poorly designed, lacking targeted dustproof, corrosion-proof, and anti-maloperation safeguards. After long-term operation, the failure rate remains high, requiring significant manpower and resources for repair and maintenance, further increasing operating costs.

[0005] Therefore, there is a need to provide a complete set of switchgear with early warning and fire extinguishing functions, in order to solve the above problems. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a complete set of switchgear with early warning and fire extinguishing functions.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a complete set of switchgear with early warning and fire extinguishing functions, including a switchgear housing and ventilation holes, wherein the ventilation holes are symmetrically opened on the top of the switchgear housing, and a sealing assembly is provided on the top of the inner cavity of the switchgear housing;

[0008] The sealing assembly includes a limiting concave guide rail, which is fixedly connected to the inner wall of the switchgear housing. A ventilation plate is provided above the limiting concave guide rail, and a pulley group is rotatably connected to the bottom of the ventilation plate. The ventilation plate is slidably connected to the inner wall of the limiting concave guide rail through the pulley group. A positioning plate and a heat-conducting copper sheet are fixedly connected to the inner wall of the switchgear housing. Memory metal and driven return springs are symmetrically arranged between the positioning plate and the ventilation plate, and the two ends of the two memory metals and the two driven return springs are respectively fixedly connected to the positioning plate and the ventilation plate.

[0009] Preferably, a linkage alarm component is provided below the ventilation plate. The linkage alarm component includes a toothed rack, which is located below the limiting concave guide rail. A U-shaped connecting rod is fixedly connected to the bottom of the ventilation plate. The end of the U-shaped connecting rod away from the ventilation plate is fixedly connected to the toothed rack. A first speed-increasing gear is rotatably connected to the inner wall of the switchgear housing. A second speed-increasing gear is fixedly connected to the side of the first speed-increasing gear away from the switchgear housing. A dustproof shell is sleeved on the outer side of the first speed-increasing gear and the second speed-increasing gear. A gear rod is rotatably connected inside the dustproof shell.

[0010] Preferably, the linkage alarm component further includes an L-shaped positioning block, which is fixedly connected to the outer wall of the dustproof shell. An alarm bell is fixedly connected to the side of the L-shaped positioning block away from the dustproof shell. A hammer connecting rod is rotatably connected to the end of the L-shaped positioning block away from the dustproof shell. A limit groove post is fixedly connected to the outer wall of the hammer connecting rod. A torsion spring is provided inside the L-shaped positioning block. An L-shaped lever is fixedly connected to the bottom of the toothed rack.

[0011] Preferably, a fire extinguishing assembly is provided above the ventilation plate. The fire extinguishing assembly includes a limiting post, which is fixedly connected to the inner wall of the switchgear housing. A telescopic rotating rod is rotatably connected to the outer wall of the limiting post. A trapezoidal slider is rotatably connected to the top of the telescopic rotating rod, and the bottom of the telescopic rotating rod is rotatably connected to the ventilation plate. A rectangular groove plate is fixedly connected to the top of the inner cavity of the switchgear housing. The trapezoidal slider is slidably connected inside the rectangular groove plate. A rotating plate is rotatably connected to the top of the inner cavity of the rectangular groove plate. A spring assembly is fixedly connected to the top of the rotating plate. The end of the spring assembly away from the rotating plate is fixedly connected to the rectangular groove plate. A conductive sheet is provided on the inner wall of the rectangular groove plate away from the trapezoidal slider. A dry powder storage tank is fixedly connected to the bottom of the rectangular groove plate.

[0012] Preferably, the sealing assembly, the linkage alarm assembly, and the fire extinguishing assembly are each provided in two sets, and are symmetrically arranged at the top of the inner cavity of the switchgear housing.

[0013] Preferably, the limiting post is positioned above the ventilation plate, and the middle part of the telescopic rotating rod is rotatably connected to the limiting post.

[0014] Preferably, the ventilation plate, the positioning plate, and the heat-conducting copper sheet are parallel and all located at the same horizontal height. The heat-conducting copper sheet passes through the positioning plate and is connected to the shape memory metal.

[0015] Preferably, the first speed-increasing gear is disposed below the toothed rack and meshes with the toothed rack, the gear rod meshes with the second speed-increasing gear, and the size of the first speed-increasing gear is larger than that of the second speed-increasing gear.

[0016] Preferably, the end of the gear rod away from the dust cover is T-shaped, and the gear rod is slidably connected to the inside of the limiting groove post through the T-shaped end. The inner groove of the limiting groove post is composed of columnar and T-shaped sections. The energy storage torsion spring is sleeved on the outside of the hammer connecting rod, and one end of the energy storage torsion spring is fixedly connected to the hammer connecting rod, while the other end of the energy storage torsion spring is fixedly connected to the L-shaped positioning block.

[0017] Preferably, the end of the limiting groove post away from the hammer connecting rod is located on the movement path of the L-shaped lever, and the end of the L-shaped lever away from the toothed rack is convex.

[0018] The present invention provides a complete set of switchgear with early warning and fire extinguishing functions. Compared with the prior art, the advantages of the present invention are:

[0019] This device uses the phase change driving force of shape memory metal as its core power source. Through mechanical linkage, it synchronously realizes three functions: air isolation and fire suppression, alarm triggering, and dry powder fire extinguishing. It does not require additional motors, solenoid valves, or other driving components, resulting in higher functional integration. The shape memory metal directly drives mechanical actions after phase change. With the drag reduction design of the pulley group and the speed-increasing transmission and energy storage structure of the gear group, there is no electrical delay in the entire process of ventilation hole sealing, alarm triggering, and fire extinguishing start-up. It is suitable for unattended switchgear in remote areas and can quickly block the spread of fire in the early stages, reducing the risk of equipment damage.

[0020] Some devices on the market typically only have a single function (such as alarm only or fire extinguishing only), or although they have multiple functions, they lack a logical closed loop, resulting in incomplete fire suppression. This device, through a closed loop of temperature sensing with a telescopic rotating rod, sealing and fire suppression (oxygen deprivation), alarm, and fire extinguishing, suppresses the spread of fire by sealing ventilation holes, buying time for fire extinguishing; triggers an alarm in the middle stage to remind personnel to take action; triggers the spraying of dry powder to extinguish open flames and prevent reignition; the prevention and control are more comprehensive, and can effectively reduce the economic losses and safety risks caused by fire.

[0021] Electrical components are susceptible to failure due to dust and vibration, and their adaptability is limited. This device adopts a pure mechanical transmission design without complex electrical control modules, resulting in a more compact structure and smaller footprint. It can be flexibly embedded inside switchgear of different specifications. It is also equipped with a dustproof housing to protect the gear set, a one-way limit structure to ensure stable operation, and a mechanical seal to prevent corrosion. Its long-term failure rate is far lower than that of traditional electrical drive equipment.

[0022] By setting up the first and second speed-increasing gears, the conversion from low-speed input to high-speed output is realized, enabling the torsion spring to quickly store sufficient elastic potential energy, ensuring that the hammer strikes the alarm bell with sufficient force and the alarm sound is clearly identifiable; the pulley system converts sliding friction into rolling friction, reducing the moving resistance of the ventilation plate and making the air isolation action response faster; the one-way limiting structure of the trapezoidal slider and the rotating plate ensures stable operation after the circuit is turned on, avoiding interruption of dry powder spraying due to vibration and other factors. Attached Figure Description

[0023] Figure 1 This is a schematic diagram showing the overall positional relationship of the device in this invention;

[0024] Figure 2 This is a cross-sectional view of the overall device in this invention;

[0025] Figure 3 This is a schematic diagram showing the positional relationship between the limiting concave guide rail, the ventilation plate, and the pulley block in this invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle;

[0027] Figure 5 For the present invention Figure 3 Enlarged view of the structure at point B in the middle;

[0028] Figure 6 This is a schematic diagram showing the positional relationship between the ventilation plate, pulley block, U-shaped connecting rod, and toothed rack in this invention;

[0029] Figure 7 This is a schematic diagram showing the positional relationship between the U-shaped connecting rod, the first speed-increasing gear, the second speed-increasing gear, and the gear rod in this invention;

[0030] Figure 8 This is a schematic diagram showing the positional relationship between the gear rod, the limiting groove post, and the hammer connecting rod in this invention;

[0031] Figure 9 For the present invention Figure 8 Enlarged view of the structure at point C;

[0032] Figure 10 This is a schematic diagram showing the positional relationship between the ventilation plate, the telescopic rotating rod, and the rectangular groove plate in this invention;

[0033] Figure 11 For the present invention Figure 10 Enlarged view of the structure at point D;

[0034] Figure 12 This is a schematic diagram showing the positional relationship between the rectangular groove plate, the trapezoidal slider, and the dry powder storage tank in this invention;

[0035] Figure 13 For the present invention Figure 12 Enlarged view of the structure at point E in the middle.

[0036] Reference numerals: 11. Switchgear housing; 12. Ventilation opening;

[0037] The sealing assembly includes: 21. a limiting concave guide rail; 22. a ventilation plate; 23. a pulley block; 24. a positioning plate; 25. a thermally conductive copper sheet; 26. a shape memory metal; and 27. a driven return spring.

[0038] The linkage alarm component includes: 31, U-shaped connecting rod; 32, toothed rack; 33, first speed-increasing gear; 34, second speed-increasing gear; 35, dustproof shell; 36, gear rod; 37, L-shaped positioning block; 38, alarm bell; 39, limit groove post; 310, hammer connecting rod; 311, energy-saving torsion spring; 312, L-shaped lever;

[0039] The fire extinguishing assembly includes: 41. Telescopic rotating rod; 42. Limiting post; 43. Rectangular groove plate; 44. Trapezoidal slider; 45. Rotating plate; 46. Spring assembly; 47. Conductive sheet; 48. Dry powder storage tank. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the invention and are not intended to limit the invention.

[0041] In the description of this invention, the terms “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” 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 invention 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 invention.

[0042] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0043] Implementation, for example Figures 1 to 4As shown, a complete set of switchgear with early warning and fire extinguishing function is provided according to an embodiment of the present invention. It includes a switchgear housing 11 and ventilation holes 12. The ventilation holes 12 are symmetrically opened on the top of the switchgear housing 11, and a sealing assembly is provided on the top of the inner cavity of the switchgear housing 11.

[0044] The sealing assembly includes a limiting concave guide rail 21, which is fixedly connected to the inner wall of the switchgear housing 11. A ventilation plate 22 is provided above the limiting concave guide rail 21. A pulley group 23 is rotatably connected to the bottom of the ventilation plate 22. The ventilation plate 22 is slidably connected to the inner wall of the limiting concave guide rail 21 through the pulley group 23. A positioning plate 24 and a heat-conducting copper sheet 25 are fixedly connected to the inner wall of the switchgear housing 11. Memory metal 26 and driven return springs 27 are symmetrically arranged between the positioning plate 24 and the ventilation plate 22. The two ends of the two memory metals 26 and the two driven return springs 27 are respectively fixedly connected to the positioning plate 24 and the ventilation plate 22.

[0045] It should be noted that the ventilation plate 22, the positioning plate 24, and the heat-conducting copper sheet 25 are parallel to each other in order to ensure that the force direction of the shape memory metal 26 and the driven return spring 27 is completely consistent with the sliding direction of the ventilation plate 22, so as to avoid jamming caused by lateral force; and all of them are located at the same horizontal height. The heat-conducting copper sheet 25 passes through the positioning plate 24 and is connected to the shape memory metal 26. The penetration point between the heat-conducting copper sheet 25 and the positioning plate 24 is isolated by a ceramic insulating sleeve to prevent the risk of electric conductivity.

[0046] like Figures 5 to 9 As shown, a linkage alarm component is provided below the ventilation plate 22. The linkage alarm component includes a toothed rack 32, which is located below the limiting concave guide rail 21. A U-shaped connecting rod 31 is fixedly connected to the bottom of the ventilation plate 22. The end of the U-shaped connecting rod 31 away from the ventilation plate 22 is fixedly connected to the toothed rack 32. A first speed-increasing gear 33 is rotatably connected to the inner wall of the switchgear housing 11. A second speed-increasing gear 34 is fixedly connected to the side of the first speed-increasing gear 33 away from the switchgear housing 11. A dustproof shell 35 is sleeved on the outer side of the first speed-increasing gear 33 and the second speed-increasing gear 34. A gear rod 36 is rotatably connected inside the dustproof shell 35.

[0047] The linkage alarm component also includes an L-shaped positioning block 37, which is fixedly connected to the outer wall of the dustproof housing 35. An alarm bell 38 is fixedly connected to the side of the L-shaped positioning block 37 away from the dustproof housing 35. A hammer connecting rod 310 is rotatably connected to the end of the L-shaped positioning block 37 away from the dustproof housing 35. A limit groove post 39 is fixedly connected to the outer wall of the hammer connecting rod 310. A torsion spring 311 is provided inside the L-shaped positioning block 37. An L-shaped lever 312 is fixedly connected to the bottom of the toothed rack 32.

[0048] It should be noted that: the first speed-increasing gear 33 is located below the rack 32 and meshes with the rack 32; the gear rod 36 meshes with the second speed-increasing gear 34; and the size of the first speed-increasing gear 33 is larger than that of the second speed-increasing gear 34. This is to ensure that the slow linear motion of the rack 32 is converted into high-speed rotation of the second speed-increasing gear 34 via the gear set, and then transmitted to the gear rod 36. This allows the energy-storing torsion spring 311 to twist and store energy in a short time, ensuring the impact force of the hammer connecting rod 310. The end of the gear rod 36 furthest from the dust cover 35 is T-shaped, and the gear rod 36 is slidably connected to the inside of the limiting groove post 39 through the T-shaped end. The internal groove of the limiting groove post 39 is composed of a columnar... The gear rod 36 is composed of a T-shaped structure. A torsion spring 311 is sleeved on the outside of the hammer connecting rod 310, and one end of the torsion spring 311 is fixedly connected to the hammer connecting rod 310. Under normal conditions, the T-shaped end of the gear rod 36 is limited by the groove of the limiting groove post 39. The rotation of the gear rod 36 can drive the hammer connecting rod 310 torsion spring to store energy. The other end of the torsion spring 311 is fixedly connected to the L-shaped positioning block 37. The end of the limiting groove post 39 away from the hammer connecting rod 310 is set on the movement path of the L-shaped lever 312. The end of the L-shaped lever 312 away from the toothed rack 32 is set as a protrusion. When the L-shaped lever 312 pushes open the limiting groove post 39, the T-shaped end of the limiting groove post 39 is released from the constraint, and the torsion spring can release the power instantly.

[0049] like Figures 10 to 13 As shown, a fire extinguishing assembly is provided above the ventilation plate 22. The fire extinguishing assembly includes a limiting post 42, which is fixedly connected to the inner wall of the switchgear housing 11. A telescopic rotating rod 41 is rotatably connected to the outer wall of the limiting post 42. A trapezoidal slider 44 is rotatably connected to the top of the telescopic rotating rod 41, and the bottom of the telescopic rotating rod 41 is rotatably connected to the ventilation plate 22. A rectangular groove plate 43 is fixedly connected to the top of the inner cavity of the switchgear housing 11. The trapezoidal slider 44 is slidably connected inside the rectangular groove plate 43. A rotating plate 45 is rotatably connected to the top of the inner cavity of the rectangular groove plate 43. A spring assembly 46 is fixedly connected to the top of the rotating plate 45. The end of the spring assembly 46 away from the rotating plate 45 is fixedly connected to the rectangular groove plate 43. A conductive sheet 47 is provided on the inner wall of the rectangular groove plate 43 away from the trapezoidal slider 44. A dry powder storage tank 48 is fixedly connected to the bottom of the rectangular groove plate 43.

[0050] It should be noted that: the limiting post 42 is located above the ventilation plate 22, the middle part of the telescopic rotating rod 41 is rotatably connected to the limiting post 42, the conductive sheet 47 and the dry powder storage tank 48 are electrically connected, and the trapezoidal slider 44 is made of conductive material; the sealing component, the linkage alarm component, and the fire extinguishing component are all provided in two sets, and are symmetrically arranged at the top of the inner cavity of the switchgear housing 11. The symmetrical arrangement of the sealing component, the linkage alarm component, and the fire extinguishing component is, on the one hand, to adapt to the symmetrical ventilation holes 12 at the top of the switchgear, to achieve double-sided synchronous sealing and improve the isolation effect; on the other hand, the double-sided components can form a redundant backup. If one side component fails due to a fault, the other side can still complete the entire process of "sealing-alarm-fire extinguishing", avoiding the failure of prevention and control due to a single point of failure and ensuring the reliability of equipment operation.

[0051] Based on the above embodiments, the following is the complete working process and working principle of the above embodiments:

[0052] Early stage of fire:

[0053] When the internal temperature of the switchgear housing 11 reaches a critical fire state due to a fault, the heat is quickly conducted to the shape memory metal 26 through the heat-conducting copper sheet 25 in contact with the heat-generating component. The heat-conducting copper sheet 25 passes through the positioning plate 24 and is directly connected to the shape memory metal 26, ensuring efficient transmission of temperature signals. As the temperature rises to the phase change threshold of the shape memory metal 26, the shape memory metal 26 undergoes thermal deformation and contracts. This force overcomes the elastic force of the driven reset spring 27 and pushes the ventilation plate 22 to slide along the limiting concave guide rail 21. The pulley group 23 at the bottom of the ventilation plate 22 converts sliding friction into rolling friction, making the movement of the ventilation plate 22 smoother and more stable.

[0054] Because the positioning plate 24 is fixed on the inner wall of the switchgear housing 11, it provides stable force support for the shape memory metal 26 and the driven return spring 27. The ventilation plate 22, the positioning plate 24, and the heat-conducting copper sheet 25 are parallel and at the same horizontal height, ensuring that the force direction is consistent.

[0055] As the ventilation plate 22 continues to move, it gradually shifts out of alignment with the ventilation holes 12 symmetrically opened on the top of the switchgear housing 11. When the temperature reaches the fire triggering temperature, the ventilation plate 22 covers the ventilation holes 12, achieving air isolation between the inside and outside of the switchgear housing 11. By reducing the oxygen supply, the spread of fire is suppressed, buying time for subsequent fire extinguishing actions.

[0056] Steps to trigger an alarm:

[0057] When the ventilation plate 22 slides along the limiting concave guide rail 21 under the drive of the memory metal 26, the U-shaped connecting rod 31 fixedly connected to its bottom moves synchronously with the ventilation plate 22, thereby driving the toothed rack 32 fixed to the U-shaped connecting rod 31 to move linearly in the horizontal direction. The toothed rack 32 is set below the limiting concave guide rail 21, and its movement trajectory is consistent with that of the ventilation plate 22.

[0058] During the movement of the toothed rack 32, it generates transmission with the first speed-increasing gear 33 meshing below. The first speed-increasing gear 33 rotates and drives the second speed-increasing gear 34, which is fixedly connected to it, to rotate synchronously. Since the size of the first speed-increasing gear 33 is larger than that of the second speed-increasing gear 34, a speed-increasing transmission structure is formed, which enables the second speed-increasing gear 34 to obtain a higher speed.

[0059] Subsequently, the second speed-increasing gear 34 meshes with the gear rod 36, transmitting high-speed rotation to the gear rod 36. When the gear rod 36 rotates, it drives the hammer connecting rod 310 to rotate around the limiting groove post 39 through the T-shaped end. During the rotation of the hammer connecting rod 310, it drives the energy storage torsion spring 311 sleeved on its outer side to torsion. As the torsion angle increases, elastic potential energy is stored.

[0060] The dust cover 35 protects the first speed-increasing gear 33 and the second speed-increasing gear 34, preventing dust from affecting transmission accuracy. When the ventilation plate 22 moves to the preset position, the L-shaped lever 312 fixed at the bottom of the rack 32 moves to the movement path of the limiting groove post 39. Its protruding end abuts against the limiting groove post 39 and moves away from the gear rod 36, causing the limiting groove post 39 to break free from the constraint of the T-shaped end of the gear rod 36. At this time, the limiting groove post 39 and the hammer connecting rod 310 break free from the constraint of the gear rod 36. The hammer connecting rod 310 can rotate along the L-shaped positioning block 37. The stored torsion spring 311 instantly releases the stored elastic potential energy, causing the hammer connecting rod 310 to rotate rapidly in the opposite direction. The hammer component at the end of the hammer connecting rod 310 directly strikes the alarm bell 38 fixed on the L-shaped positioning block 37, causing the alarm bell 38 to emit a continuous warning sound to remind the staff to deal with the situation in time.

[0061] Triggering fire extinguishing steps:

[0062] As the ventilation plate 22 moves, it will drive the telescopic rotating rod 41 to rotate around the limiting post 42, making the limiting post 42 the fulcrum of the entire lever structure. As the telescopic rotating rod 41 rotates, the two sides of the trapezoidal slider 44 will be pushed synchronously by the two telescopic rotating rods 41 to slide in a straight line along the inner wall of the rectangular groove plate 43.

[0063] During the sliding process, the trapezoidal slider 44 will abut against the rotating plate 45 and compress the spring assembly 46, causing the rotating plate 45 to deflect around the rotation point at the top of the inner cavity of the rectangular groove plate 43. When the trapezoidal slider 44 moves to one side of the rotating plate 45 (below the conductive sheet 47), the spring assembly 46 will elastically extend and push the rotating plate 45 to rotate in the opposite direction around the top of the rectangular groove plate 43. Subsequently, the rotating plate 45 will abut against the outer wall of the trapezoidal slider 44 to prevent the trapezoidal slider 44 from moving in the opposite direction.

[0064] As the trapezoidal slider 44 slides, it gradually approaches the conductive sheet 47 set on the inner wall of the rectangular groove plate 43. When the ventilation plate 22 moves to the limit position (the ventilation hole 12 is completely sealed), the top of the trapezoidal slider 44 contacts the conductive sheet 47, realizing circuit conduction. Since the conductive sheet 47 has an electrical connection with the dry powder storage tank 48 fixed at the bottom of the rectangular groove plate 43, the circuit conduction triggers the starting mechanism inside the dry powder storage tank 48, so that the dry powder is accurately delivered to the heat fault point inside the switch equipment housing 11 through the preset spray pipe, and the open flame is quickly extinguished.

[0065] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included within the scope and spirit of the invention, and are included within the scope of the invention as described in the claims and its equivalents.

[0066] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A complete switchgear set with pre-alarm fire extinguishing function, comprising a switchgear set shell (11), ventilation holes (12) symmetrically opened at the top of the switchgear set shell (11), characterized in that, The inner cavity top of the switch equipment shell (11) is provided with a sealing assembly; The sealing assembly comprises a limiting concave guide rail (21) fixedly connected to the inner wall of the switch equipment shell (11), a ventilation plate (22) arranged above the limiting concave guide rail (21), a pulley block (23) rotatably connected to the bottom of the ventilation plate (22), the ventilation plate (22) being slidably connected to the inner wall of the limiting concave guide rail (21) through the pulley block (23), a positioning plate (24) and a heat-conducting copper sheet (25) fixedly connected to the inner wall of the switch equipment shell (11), memory metals (26) and driven return springs (27) symmetrically arranged between the positioning plate (24) and the ventilation plate (22), and both ends of the two memory metals (26) and the two driven return springs (27) being fixedly connected to the positioning plate (24) and the ventilation plate (22), respectively. A linkage alarm assembly is arranged below the ventilation plate (22), the linkage alarm assembly comprising a toothed strip (32) arranged below the limiting concave guide rail (21), a U-shaped connecting rod (31) fixedly connected to the bottom of the ventilation plate (22), one end of the U-shaped connecting rod (31) away from the ventilation plate (22) being fixedly connected to the toothed strip (32), a first speed-increasing gear (33) rotatably connected to the inner wall of the switch equipment shell (11), a second speed-increasing gear (34) fixedly connected to the side of the first speed-increasing gear (33) away from the switch equipment shell (11), a dustproof shell (35) sleeved to the outer sides of the first speed-increasing gear (33) and the second speed-increasing gear (34), and a gear rod (36) rotatably connected to the inside of the dustproof shell (35). The linkage alarm assembly further comprises an L-shaped positioning block (37) fixedly connected to the outer wall of the dustproof shell (35), an alarm bell (38) fixedly connected to the side of the L-shaped positioning block (37) away from the dustproof shell (35), a ram connecting rod (310) rotatably connected to the end of the L-shaped positioning block (37) away from the dustproof shell (35), a limiting recessed column (39) fixedly connected to the outer wall of the ram connecting rod (310), and a force storage torsional spring (311) arranged in the L-shaped positioning block (37), and an L-shaped shifting rod (312) fixedly connected to the bottom of the toothed strip (32).

2. A switchgear assembly with pre-alarm fire extinguishing function according to claim 1, characterized in that, The upper part of the ventilation plate (22) is provided with a fire extinguishing assembly, the fire extinguishing assembly comprises a limiting column (42), the limiting column (42) is fixedly connected to the inner wall of the switch device shell (11), the outer wall of the limiting column (42) is rotatably connected with a telescopic rotating rod (41), the top of the telescopic rotating rod (41) is rotatably connected with a trapezoidal slide block (44), the bottom of the telescopic rotating rod (41) is rotatably connected to the ventilation plate (22), the inner cavity top of the switch device shell (11) is fixedly connected with a rectangular groove plate (43), the trapezoidal slide block (44) is slidably connected in the rectangular groove plate (43), the inner cavity top of the rectangular groove plate (43) is rotatably connected with a rotating plate (45), the top of the rotating plate (45) is fixedly connected with a spring set (46), one end of the spring set (46) away from the rotating plate (45) is fixedly connected to the rectangular groove plate (43), the inner wall of the rectangular groove plate (43) is provided with a conductive sheet (47) away from the trapezoidal slide block (44), the bottom of the rectangular groove plate (43) is fixedly connected with a dry powder storage tank (48).

3. A switchgear assembly with pre-alarm fire extinguishing function according to claim 2, characterized in that, The sealing assembly, the linkage alarm assembly and the fire extinguishing assembly are provided with two groups and symmetrically arranged on the inner cavity top of the switch device shell (11).

4. The switchgear assembly with pre-alarm and fire extinguishing function according to claim 2, characterized in that, The limiting column (42) is arranged above the ventilation plate (22), and the middle part of the telescopic rotating rod (41) is rotatably connected to the limiting column (42).

5. The switchgear assembly with pre-alarm fire extinguishing function according to claim 1, characterized in that, The ventilation plate (22), the positioning plate (24) and the heat-conducting copper sheet (25) are parallel and at the same horizontal height, and the heat-conducting copper sheet (25) penetrates through the positioning plate (24) and communicates with the memory metal (26).

6. The switchgear assembly with pre-alarm and fire extinguishing function according to claim 1, characterized in that, The first speed-increasing gear (33) is arranged below the toothed strip (32), and the first speed-increasing gear (33) is engaged with the toothed strip (32), the gear rod (36) is engaged with the second speed-increasing gear (34), and the size of the first speed-increasing gear (33) is greater than that of the second speed-increasing gear (34).

7. The switchgear assembly with pre-alarm and fire extinguishing function according to claim 1, characterized in that, The gear rod (36) is provided with a T-shaped end away from the dustproof shell (35), the gear rod (36) is slidably connected in the limiting groove column (39) through the T-shaped end, the internal groove of the limiting groove column (39) is composed of a columnar shape and a T shape, the force storage torsional spring (311) is arranged outside the hammer connecting rod (310), one end of the force storage torsional spring (311) is fixedly connected to the hammer connecting rod (310), and the other end of the force storage torsional spring (311) is fixedly connected to the L-shaped positioning block (37).

8. The switchgear assembly with pre-alarm and fire extinguishing function according to claim 1, characterized in that, The end of the limiting groove column (39) away from the hammer connecting rod (310) is arranged on the movement path of the L-shaped shifting rod (312), and the end of the L-shaped shifting rod (312) away from the toothed strip (32) is provided with a protrusion.

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