Transformer substation with automatic fire extinguishing function

Abstract

The invention discloses a transformer substation with an automatic fire extinguishing function, and relates to the technical field of transformer substation fire extinguishing. The transformer substation comprises a low-voltage chamber, a voltage transformation chamber, a high-voltage chamber and a protective cover, a transformer is arranged at the bottom in the voltage transformation chamber, a smoke alarm is arranged on the inner wall of the voltage transformation chamber, a closing mechanism is arranged in the voltage transformation chamber, a sealing mechanism is arranged on the side wall of a chamber door, and a fire extinguishing mechanism is arranged in the voltage transformation chamber. According to the transformer, by arranging the smoke alarm and the fire extinguishing mechanism, fire disasters can be found in time and extinguished when the transformer causes fire disasters, meanwhile, the fire extinguishing mechanism extinguishes the fire through cooperation of nitrogen and dry powder, the nitrogen can boost the dry powder to be rapidly sprayed, the dry powder forms strong airflow during spraying, and the fire disasters are prevented from being damaged. And it is ensured that the dry powder extinguishing agent can cover the surfaces of comburent more rapidly and evenly, and the extinguishing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of transformer substation fire extinguishing, in particular to a transformer substation with an automatic fire extinguishing function. Background Art

[0002] Substation, also known as transformer station, is a place in the power system to transform voltage and current, receive and distribute electric energy. It converts high-voltage current transmitted by transmission lines into low-voltage current by stepping up or down the voltage through transformers and other equipment, so that electric energy can be distributed to various fields such as residential, commercial and industrial. Substations installed in urban communities mostly appear in the form of boxes. Box-type substations are mainly composed of high-voltage room, transformer room and low-voltage room, which are mechatronic and fully enclosed.

[0003] The transformer installed in the transformer room of the box-type substation is the main equipment. The transformer is connected to the high-voltage room and the transformer room through cables. The working intensity is relatively high. If there is oil leakage or oil shortage in the oil tank of the transformer, it will affect the thermal circulation and heat dissipation capacity of the oil, leading to overheating and fire. In addition, poor contact at the transformer wiring and tap changer will cause local overheating, which will cause fire. Because the transformer has an oil tank, the fire will spread rapidly and it is easy to explode, so it is necessary to improve the fire resistance of the transformer room;

[0004] In order to extinguish fire in time, the transformer room of box-type substation is equipped with automatic fire extinguishing device. The existing automatic fire extinguishing device uses smoke alarm to detect smoke, and then controls the dry powder fire extinguishing equipment to spray carbon dioxide for fire extinguishing through PCL controller. However, the space in the transformer room is large and has more oxygen. Moreover, the fire source is on the surface of the transformer. At the same time, the ventilation hole of the box-type substation itself will continuously enter the air, which makes it difficult to quickly reduce the oxygen concentration in the box-type substation, because the air will dilute the sprayed carbon dioxide, which will easily cause the fire to spread and reduce the fire extinguishing effect. Secondly, the position of the current nozzle is fixed and the spraying range is limited, which makes it difficult to quickly suffocate the fire source and avoid causing greater losses. Therefore, we propose a substation with automatic fire extinguishing function. Summary of the invention

[0005] In order to solve the problem that the space in the existing transformer room is large and has more oxygen, and the fire source is on the surface of the transformer, and the ventilation holes of the box-type substation itself will continuously let in air, making it difficult to quickly reduce the oxygen concentration in the box-type substation, because the air will dilute the ejected carbon dioxide, which is easy to cause the fire to spread and reduce the fire extinguishing effect; the purpose of the present invention is to provide a substation with automatic fire extinguishing function.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a substation with automatic fire extinguishing function, comprising a substation, the substation comprising a low-voltage chamber, a transformer chamber, a high-voltage chamber and a protective cover, the front side wall of the transformer chamber is hingedly provided with a chamber door, the outer side wall of the chamber door is embedded with a ventilation frame, a transformer is provided at the bottom of the transformer chamber, a smoke alarm is provided on the inner wall of the transformer chamber, a closing mechanism is provided in the transformer chamber, a sealing mechanism is provided on the side wall of the chamber door, and a fire extinguishing mechanism is provided in the transformer chamber.

[0007] Preferably, the closing mechanism comprises two groups of first fireproof panels arranged in the transformer chamber, one side of the two groups of first fireproof panels are hingedly provided with a second fireproof panel, the tops of the two groups of first fireproof panels are provided with a first connecting block, the tops of the two groups of second fireproof panels are provided with a second connecting block, a first rotating shaft is arranged in the transformer chamber, one end of the first rotating shaft passes through the top of the transformer chamber and is connected to a driven pulley arranged in the protective cover, a second active bevel gear is arranged at the other end of the first rotating shaft, a second rotating shaft is rotatably arranged in the protective cover, a first driven bevel gear is sleeved and installed on the outer wall of the second rotating shaft, a motor is arranged at the bottom of the protective cover, and an output end of the motor is connected with a gear engaged with the first driven bevel gear. A first driving bevel gear meshed with each other, a driving pulley is provided on the top of the second rotating shaft, a belt is sleeved on the outer walls of the driving pulley and the driven pulley, a disc is sleeved on the outer wall of the first rotating shaft, two groups of first connecting rods are hinged on the bottom of the disc, one end of the two groups of first connecting rods are respectively hinged to the opposite side walls of the two groups of first connecting blocks, a screw rod is connected to the rear side wall of the transformer chamber through a bearing, a second driven bevel gear meshed with the second driving bevel gear is sleeved on the outer wall of the screw rod, a first slider is sleeved on the outer wall of the screw rod, two groups of second connecting rods are hinged on the outer wall of the first slider, one end of the two groups of second connecting rods are respectively hinged to the outer side walls of the two groups of second connecting blocks.

[0008] Preferably, a first sliding rod is movably provided through the front side wall of the first sliding block, and one end of the first sliding rod is connected to the rear side wall of the transformer chamber.

[0009] Preferably, the fire extinguishing mechanism includes two groups of spray plates in the transformer chamber, the outer wall of the first fireproof plate is provided with a reciprocating lifting mechanism, the outer walls of the two groups of spray plates are provided with multiple groups of nozzles, the tops of the two groups of spray plates are provided with a fourth delivery pipe, the inner walls of the two groups of spray plates are provided with multiple groups of nozzles, the two groups of fourth delivery pipes are connected with a second telescopic pipe, the outer wall of the second telescopic pipe is provided with a second delivery pipe, the transformer chamber is provided with a first telescopic pipe, the outer wall of the first telescopic pipe is provided with two groups of third delivery pipes, the nozzle is connected to the third delivery pipe, the first telescopic pipe is connected with the first delivery pipe, the rear side wall of the substation is provided with a protection box, a dry powder tank and a nitrogen tank are installed inside the protection box, one end of the first delivery pipe is connected to the dry powder tank, and one end of the second delivery pipe is connected to the nitrogen tank.

[0010] Preferably, the reciprocating lifting mechanism includes a fixed plate provided on the outer wall of the first fireproof plate, a lifting block is provided at one end of the spray plate, a lifting rod is provided on the top of the lifting block, one end of the lifting rod passes through the bottom of the fixed plate and is connected to a guide wheel provided on the outside, a return spring is sleeved on the outer wall of the lifting rod, one end of the return spring is connected to the bottom of the fixed plate, and the other end of the return spring is connected to the top of the lifting block, a guide plate is provided on the inner wall of the transformer chamber, and the guide wheel is in contact with the bottom of the guide plate.

[0011] Preferably, a second sliding rod is provided on the outer side wall of the first fireproof plate, a second sliding block is sleeved on the outer side wall of the second sliding rod, and the outer side wall of the second sliding block is connected to one end of the spray plate.

[0012] Preferably, the two groups of opposite side walls of the first fireproof panels are provided with openings, and the guide plates match the two groups of openings.

[0013] Preferably, the sealing mechanism comprises a mounting bracket provided on the outer wall of the chamber door, a sealing fireproof plate is slidably connected in the mounting bracket, a card block is provided on the top of the sealing fireproof plate, a cavity is opened in the card block, a sliding plate is slidably connected in the cavity, a spring is provided on the side wall of the sliding plate, one end of the spring is connected to the inner wall of the cavity, and an insert block is connected to the other side wall of the sliding plate, a fixing block is provided on the outer wall of the chamber door, a card slot matching the card block is provided on the bottom of the fixing block, a socket matching the insert block is provided on the outer wall of the fixing block, a fixing box is provided on the top of the transformer chamber, one end of the second rotating shaft is connected to a bearing 1 provided at the bottom of the fixing box, a cam is sleeved and installed on the outer wall of the second rotating shaft, an extrusion plate is slidably connected in the fixing box, an extrusion rod is provided on the outer wall of the extrusion plate, one end of the extrusion rod passes through the inner wall of the fixing box and matches the socket, a supporting spring is sleeved on the outer wall of the extrusion rod, one end of the supporting spring is connected to the right side wall of the extrusion plate, and the other end of the supporting spring is connected to the inner wall of the fixing box.

[0014] Preferably, a limiting plate is sleeved and installed on the outer wall of the extrusion rod, and the limiting plate is arranged outside the fixing box.

[0015] Preferably, a through hole is opened at the inner bottom of the protective cover, and a second bearing is sleeved and installed on the outer wall of the first rotating shaft, and the second bearing matches the inner wall of the through hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention sets a smoke alarm and a fire extinguishing mechanism, so that when the transformer of the present application causes a fire, it can be discovered and extinguished in time. At the same time, the fire extinguishing mechanism uses nitrogen and dry powder to extinguish the fire. Nitrogen can help the dry powder to spray quickly, so that the dry powder forms a strong airflow when spraying, ensuring that the dry powder fire extinguishing agent can cover the surface of the burning object more quickly and evenly, thereby improving the fire extinguishing efficiency. Nitrogen can also reduce the oxygen content, prevent the spread of fire, and improve the fire extinguishing effect;

[0018] 2. The present invention sets a sealing mechanism so that the transformer is sealed when the transformer is extinguished, so that the transformer is extinguished in a closed environment, so that nitrogen can quickly reduce the oxygen content around the transformer, and the dry powder is difficult to overflow, so that the dry powder fills the closed environment, reducing the possibility of the fire source re-igniting, and further improving the fire extinguishing effect;

[0019] 3. The present invention provides a sealing mechanism, so that the ventilation frame is sealed before the transformer is sealed, thereby preventing outside air from entering the transformer chamber, reducing the possibility of oxygen entering, and being able to cooperate with the sealing mechanism to quickly reduce the oxygen concentration in the transformer chamber;

[0020] 4. The present invention sets a reciprocating lifting mechanism so that when the first fireproof plate of the present application moves relatively to seal the transformer, it can drive the spray plate to move up and down reciprocatingly, thereby increasing the spray range, quickly suffocating the fire source, and accelerating the fire extinguishing speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the nitrogen tank and dry powder tank of the present invention.

[0024] Figure 3 It is a schematic diagram of the structure of the closing mechanism of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the fire extinguishing mechanism of the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the reciprocating lifting mechanism of the present invention.

[0027] Figure 6It is a schematic diagram of the sealing mechanism structure of the present invention.

[0028] Figure 7 It is a schematic diagram of the internal structure of the fixing block and the clamping block of the present invention.

[0029] Figure 8 It is a schematic diagram of the internal structure of the fixing box of the present invention.

[0030] Fig. 9 For the present invention Figure 3 A schematic diagram of the enlarged structure in the middle.

[0031] Fig.10 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0032] Fig.11 For the present invention Figure 4 Enlarged schematic diagram of the structure at point C in the middle.

[0033] In the figure: 1. Substation; 100. Low-voltage room; 101. Transformer room; 102. High-voltage room; 103. Room door; 104. Ventilation frame; 105. Transformer; 106. Protective cover; 2. Smoke alarm; 3. Closing mechanism; 300. First fireproof board; 301. Second fireproof board; 302. First connecting block; 303. First connecting rod; 304. Second connecting rod; 305. Second connecting block; 306. First rotating shaft; 307. 07, driven pulley; 308, belt; 309, driving pulley; 310, second rotating shaft; 311, first driven bevel gear; 312, first driving bevel gear; 313, motor; 314, disc; 315, screw rod; 316, second driven bevel gear; 317, second driving bevel gear; 318, first slide bar; 319, first slide block; 4, fire extinguishing mechanism; 400, dry powder tank; 401, first conveying pipe; 402, protection box; 403, nitrogen tank; 404, second delivery pipe; 405, first telescopic pipe; 406, third delivery pipe; 407, second telescopic pipe; 408, fourth delivery pipe; 409, spray plate; 410, nozzle; 411, spray head; 5, sealing mechanism; 500, mounting frame; 501, sealing fireproof board; 502, block; 503, fixing block; 504, slot; 505, jack; 506, cavity ; 507, spring; 508, sliding plate; 509, plug block; 510, fixed box; 511, cam; 512, extrusion plate; 513, support spring; 514, extrusion rod; 515, limit plate; 6, reciprocating lifting mechanism; 600, lifting block; 601, fixed plate; 602, lifting rod; 603, reset spring; 604, guide wheel; 605, guide plate; 606, second slide bar; 607, second slider. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example: Figure 1-11 As shown, the present invention provides a substation with an automatic fire extinguishing function, including a substation 1, the substation 1 includes a low-voltage chamber 100, a transformer chamber 101, a high-voltage chamber 102 and a protective cover 106, the front side wall of the transformer chamber 101 is hingedly provided with a door 103, the outer wall of the door 103 is embedded with a ventilation frame 104, a transformer 105 is provided at the bottom of the transformer chamber 101, a smoke alarm 2 is provided on the inner wall of the transformer chamber 101, the smoke alarm 2 is electrically connected to an external PCL controller, and the PCL controller can control other mechanisms at the same time to achieve automatic fire extinguishing (PCL controller control is a prior art), a closing mechanism 3 is provided in the transformer chamber 101, a sealing mechanism 5 is provided on the side wall of the door 103, and a fire extinguishing mechanism 4 is provided in the transformer chamber 101.

[0036] The sealing mechanism 3 includes two groups of first fireproof plates 300 provided in the transformer chamber 101, one side of the two groups of first fireproof plates 300 is hinged with a second fireproof plate 301, the top of the two groups of first fireproof plates 300 is provided with a first connecting block 302, the top of the two groups of second fireproof plates 301 is provided with a second connecting block 305, a first rotating shaft 306 is provided in the transformer chamber 101, one end of the first rotating shaft 306 passes through the top of the transformer chamber 101 and is connected to a driven pulley 307 provided in the protective cover 106, and a bottom of the protective cover 106 is provided. The outer wall of the first rotating shaft 306 is sleeved with a bearing 2, and the bearing 2 matches the inner wall of the through hole. Under the action of the bearing 2, the first rotating shaft 306 rotates more stably. The other end of the first rotating shaft 306 is provided with a second active bevel gear 317. The second rotating shaft 310 is rotatably arranged in the protective cover 106. The outer wall of the second rotating shaft 310 is sleeved with a first driven bevel gear 311. The bottom of the protective cover 106 is provided with a motor 313. The output end of the motor 313 is connected with a first active bevel gear meshed with the first driven bevel gear 311. Gear 312, a driving pulley 309 is provided on the top of the second rotating shaft 310, a belt 308 is sleeved on the outer wall of the driving pulley 309 and the driven pulley 307, a disc 314 is sleeved and installed on the outer wall of the first rotating shaft 306, two groups of first connecting rods 303 are hinged at the bottom of the disc 314, one end of the two groups of first connecting rods 303 is respectively hinged to the opposite side walls of the two groups of first connecting blocks 302, a screw rod 315 is connected to the rear side wall of the transformer chamber 101 through a bearing, and a second driving bevel gear is sleeved and installed on the outer wall of the screw rod 315 A second driven bevel gear 316 meshing with 317, a first slider 319 is sleeved on the outer wall of the screw rod 315, two groups of second connecting rods 304 are hinged on the outer wall of the first slider 319, one end of the two groups of second connecting rods 304 are respectively hinged to the outer side walls of the two groups of second connecting blocks 305, a first slide bar 318 is movably penetrated through the front side wall of the first slider 319, one end of the first slide bar 318 is connected to the inner and rear side wall of the transformer chamber 101, and under the action of the first slide bar 318, the first slider 319 moves more stably on the outer wall of the screw rod 315.

[0037] By adopting the above technical solution, when extinguishing the transformer 105, the first fireproof board 300 and the second fireproof board 301 are used to seal it, so that the transformer 105 is extinguished in a closed environment, so that the nitrogen can quickly reduce the oxygen content around the transformer 105, and at the same time, the dry powder is difficult to overflow, so that the dry powder fills the closed environment, reducing the possibility of the fire source re-igniting.

[0038] The fire extinguishing mechanism 4 includes two groups of spray plates 409 provided in the transformer chamber 101, the outer wall of the first fireproof plate 300 is provided with a reciprocating lifting mechanism 6, the outer walls of the two groups of spray plates 409 are provided with multiple groups of nozzles 411, the tops of the two groups of spray plates 409 are provided with fourth delivery pipes 408, the inner walls of the two groups of spray plates 409 are provided with multiple groups of nozzles 410, the two groups of fourth delivery pipes 408 are connected with second telescopic pipes 407, the outer wall of the second telescopic pipe 407 is provided with a second delivery pipe 404, and the transformer chamber 10 1 is provided with a first telescopic tube 405, and two groups of third delivery pipes 406 are provided on the outer side wall of the first telescopic tube 405, and the nozzle 410 is connected to the third delivery pipe 406. The first telescopic tube 405 is connected with the first delivery pipe 401, and a protection box 402 is provided on the rear side wall of the substation 1. A dry powder tank 400 and a nitrogen tank 403 are installed inside the protection box 402, one end of the first delivery pipe 401 is connected to the dry powder tank 400, and one end of the second delivery pipe 404 is connected to the nitrogen tank 403.

[0039] By adopting the above technical solution, the third delivery pipe 406 and the fourth delivery pipe 408 are hard pipes, the other delivery pipes are hoses, the first telescopic pipe 405 and the second telescopic pipe 407 are telescopic wave hoses, and the fire extinguishing mechanism 4 uses the cooperation of nitrogen and dry powder to extinguish the fire. Nitrogen can help the dry powder to be sprayed quickly, so that the dry powder forms a strong airflow when spraying, ensuring that the dry powder fire extinguishing agent can cover the surface of the burning object more quickly and evenly, thereby improving the fire extinguishing efficiency. At the same time, nitrogen can also reduce the oxygen content.

[0040] The reciprocating lifting mechanism 6 includes a fixed plate 601 provided on the outer wall of the first fireproof plate 300, a lifting block 600 is provided at one end of the spray plate 409, a lifting rod 602 is provided on the top of the lifting block 600, one end of the lifting rod 602 passes through the bottom of the fixed plate 601 and is connected to the guide wheel 604 provided on the outside, a return spring 603 is sleeved on the outer wall of the lifting rod 602, one end of the return spring 603 is connected to the bottom of the fixed plate 601, and the other end of the return spring 603 is connected to the top of the lifting block 600, and a guide plate 605 is provided on the inner wall of the transformer chamber 101, and the guide wheel 604 is provided on the inner wall of the transformer chamber 101. The wheel 604 is in contact with the bottom of the guide plate 605, and the two groups of opposite side walls of the first fireproof plates 300 are provided with openings, and the guide plate 605 matches the two groups of openings. Under the action of the openings, the guide plate 605 will not block the movement of the first fireproof plates 300, and the outer wall of the first fireproof plates 300 is provided with a second sliding bar 606, and the outer wall of the second sliding bar 606 is sleeved with a second slider 607, and the outer wall of the second slider 607 is connected to one end of the spray plate 409. Under the action of the second sliding bar 606 and the second slider 607, the spray plate 409 moves up and down more stably.

[0041] By adopting the above technical solution, the first fireproof plate 300 drives the guide wheel 604 to move on the guide plate 605 (the surface of the guide plate 605 is arranged in convex and concave shapes, and the convex and concave parts are arranged in an isosceles trapezoidal shape), so that the guide wheel 604 can move back and forth up and down. With the cooperation of the reset spring 603, the guide wheel 604 can drive the lifting rod 602 and the lifting block 600 to move back and forth up and down, so that the lifting block 600 drives the spray plate 409 to move back and forth up and down, which can simulate the arm driving the nozzle 411 to lift and lower back and forth to spray the fire source, thereby increasing the spray range.

[0042] The sealing mechanism 5 includes a mounting frame 500 provided on the outer wall of the chamber door 103, a sealing fireproof plate 501 is slidably connected in the mounting frame 500, a card block 502 is provided on the top of the sealing fireproof plate 501, a cavity 506 is provided in the card block 502, a sliding plate 508 is slidably connected in the cavity 506, a spring 507 is provided on the side wall of the sliding plate 508, one end of the spring 507 is connected to the inner wall of the cavity 506, and an insert block 509 is connected to the other side wall of the sliding plate 508, a fixing block 503 is provided on the outer wall of the chamber door 103, a card slot 504 matching the card block 502 is provided at the bottom of the fixing block 503, and a card slot 504 matching the insert block 502 is provided on the outer wall of the fixing block 503 509 matches the socket 505, a fixed box 510 is provided on the top of the transformer chamber 101, one end of the second rotating shaft 310 is connected to a bearing 1 provided at the bottom of the fixed box 510, a cam 511 is sleeved and installed on the outer wall of the second rotating shaft 310, an extrusion plate 512 is slidably connected in the fixed box 510, an extrusion rod 514 is provided on the outer wall of the extrusion plate 512, one end of the extrusion rod 514 passes through the inner wall of the fixed box 510 and matches the socket 505, a support spring 513 is sleeved on the outer wall of the extrusion rod 514, one end of the support spring 513 is connected to the right side wall of the extrusion plate 512, and the other end of the support spring 513 is connected to the inner wall of the fixed box 510.

[0043] By adopting the above technical solution, the ventilation frame 104 is sealed before the transformer 105 is closed, and the oxygen concentration in the transformer chamber 101 can be quickly reduced in cooperation with the first fireproof board 300 and the second fireproof board 301.

[0044] A limiting plate 515 is sleeved and installed on the outer wall of the extrusion rod 514 , and the limiting plate 515 is arranged outside the fixing box 510 .

[0045] By adopting the above technical solution, the extrusion rod 514 can be prevented from being completely squeezed into the socket 505 under the action of the limit block 515, so that when the extrusion rod 514 squeezes the plug block 509 and the plug block 509 is squeezed into the cavity 506, it falls rapidly under the action of gravity of the sealed fireproof board 501, and the sealed fireproof board 501 can quickly seal the ventilation frame 104 to isolate the air.

[0046] Because high-voltage control cabinets and low-voltage control cabinets are set in the high-voltage chamber 102 and the low-voltage chamber 100, the fire extinguishing mechanism 4 of the present invention is also applicable to the cable connection of the high-voltage control cabinet and the low-voltage control cabinet, and the electric telescopic rod can be used to drive the spray plate 409 to move.

[0047] Working principle: When the transformer 105 has poor contact or overheats and catches fire, the smoke alarm 2 will detect the smoke, and the smoke alarm 2 will transmit the signal to the PCL controller (this is the existing technology). The PCL controller will make timely control, and the dry powder in the dry powder tank 400 enters the nozzle 410 from the first delivery pipe 401, the second telescopic pipe 405 and the third delivery pipe 406, and is sprayed out. At the same time, the nitrogen in the nitrogen pipe 403 enters the spray plate 409 from the second delivery pipe 404, the second telescopic pipe 407 and the fourth delivery pipe 408, and is then discharged through the nozzle 411. The pressure of the nitrogen discharge can accelerate the sprayed dry powder to form a strong airflow, ensuring that the dry powder can cover the surface of the burning object more quickly and evenly, thereby improving the fire extinguishing efficiency. At the same time, the motor 313 drives the first active bevel gear 312 to rotate, and the first The active bevel gear 312 drives the first driven bevel gear 311 to rotate, and the first driven bevel gear 311 drives the second rotating shaft 310 to rotate. When the second rotating shaft 310 rotates, it drives the cam 511 to rotate. The protrusion of the cam 511 indirectly squeezes the extrusion plate 512, and the extrusion plate 512 can squeeze the supporting spring 513 and the extrusion rod 514. Under the action of the supporting spring 513, the extrusion rod 514 can move back and forth, and the extrusion rod 514 can squeeze the plug block 509. The plug block 509 drives the sliding plate 508 to squeeze the spring 507. The plug block 509 is squeezed into the cavity 506, and then falls rapidly under the action of the gravity of the sealed fireproof plate 501. The sealed fireproof plate 501 can quickly seal the ventilation frame 104 to isolate the air and prevent the air from entering the transformer chamber 101 from the ventilation frame 104;

[0048] At the same time, when the second rotating shaft 310 rotates, it drives the driving pulley 309 to rotate, and under the cooperation of the belt 308, the driven pulley 307 and the first rotating shaft 306, it drives the disc 314 to rotate, and the disc 314 drives the first connecting rod 303 to make a circular motion, and the first connecting rod 303 drives the two sets of first fireproof plates 300 to move relative to each other to seal the transformer 105. At the same time, the first rotating shaft 306 drives the second driving bevel gear 317 to rotate, and the second driving bevel gear 317 drives the second driven bevel gear 316 to rotate, and the second driven bevel gear 316 drives The movable screw 315 rotates, and the first slider 319 moves on the outer wall of the screw 315 with the cooperation of the first slider 318. The first slider 319 drives the second connecting rod 304 to rotate, and the second connecting rod 304 drives the second fireproof plate 301 to rotate to achieve closing. Therefore, under the action of the first fireproof plate 300 and the second fireproof plate 301, the transformer 105 can be sealed in a small environment, so that nitrogen can quickly reduce the oxygen content around the transformer 105, and at the same time, the dry powder is difficult to overflow, which can better extinguish the fire source on the transformer 105;

[0049] When the first fireproof plate 300 moves relatively, the first fireproof plate 300 drives the guide wheel 604 to move on the guide plate 605 (the surface of the guide plate 605 is arranged with convex and concave parts, and the convex and concave parts are arranged in an isosceles trapezoidal shape), so that the guide wheel 604 can move back and forth up and down, and the guide wheel 604 drives the lifting rod 602 to move up and down, so that the lifting block 600 can move back and forth up and down with the cooperation of the reset spring 603, so that the lifting block 600 drives the spray plate 409 to move back and forth up and down, which can simulate the arm driving the nozzle 411 to move back and forth to spray the fire source (in life, when holding a dry powder fire extinguisher to extinguish a fire, the nozzle will be moved up and down to extinguish the fire source to improve the fire extinguishing effect), thereby increasing the spraying range and quickly suffocating the fire source.

[0050] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A substation with an automatic fire extinguishing function, comprising a substation (1), wherein the substation (1) comprises a low-voltage chamber (100), a transformer chamber (101), a high-voltage chamber (102) and a protective cover (106), wherein a door (103) is hingedly provided on the front side wall of the transformer chamber (101), a ventilation frame (104) is embedded and installed on the outer side wall of the door (103), and a transformer (105) is provided on the inner bottom of the transformer chamber (101), characterized in that: A smoke alarm (2) is provided on the inner wall of the transformer chamber (101), a sealing mechanism (3) is provided in the transformer chamber (101), a sealing mechanism (5) is provided on the side wall of the chamber door (103), and a fire extinguishing mechanism (4) is provided in the transformer chamber (101).

2. A substation with automatic fire extinguishing function as claimed in claim 1, characterized in that: The sealing mechanism (3) comprises two groups of first fireproof panels (300) arranged in the transformer chamber (101), one side of the two groups of the first fireproof panels (300) being hingedly provided with a second fireproof panel (301), the tops of the two groups of the first fireproof panels (300) being provided with a first connecting block (302), the tops of the two groups of the second fireproof panels (301) being provided with a second connecting block (305), a first rotating shaft (306) being arranged in the transformer chamber (101), one end of the first rotating shaft (306) passing through the transformer chamber (101), 01) is connected to a driven pulley (307) provided in the protective cover (106) at the top, a second driving bevel gear (317) is provided at the other end of the first rotating shaft (306), a second rotating shaft (310) is rotatably provided in the protective cover (106), a first driven bevel gear (311) is sleeved and installed on the outer wall of the second rotating shaft (310), a motor (313) is provided at the bottom of the protective cover (106), and an output end of the motor (313) is connected to the first driven bevel gear (311) ), a first driving bevel gear (312) meshed with the first rotating shaft (310), a driving pulley (309) is provided on the top of the second rotating shaft (310), a belt (308) is sleeved on the outer wall of the driving pulley (309) and the driven pulley (307), a disk (314) is sleeved and installed on the outer wall of the first rotating shaft (306), two groups of first connecting rods (303) are hingedly provided at the bottom of the disk (314), one end of the two groups of first connecting rods (303) are respectively connected to the opposite side walls of the two groups of first connecting blocks (302) The transformer chamber (101) is hingedly connected, and a screw rod (315) is provided on the inner rear side wall thereof via a bearing. A second driven bevel gear (316) meshing with a second active bevel gear (317) is sleeved and installed on the outer wall of the screw rod (315). A first slider (319) is sleeved on the outer wall of the screw rod (315). Two groups of second connecting rods (304) are hingedly provided on the outer wall of the first slider (319). One end of the two groups of second connecting rods (304) are respectively hingedly connected to the outer side walls of the two groups of second connecting blocks (305).

3. A substation with automatic fire extinguishing function as claimed in claim 2, characterized in that: A first sliding rod (318) is movably provided through the front side wall of the first sliding block (319), and one end of the first sliding rod (318) is connected to the rear side wall inside the transformer chamber (101).

4. A substation with automatic fire extinguishing function as claimed in claim 1, characterized in that: The fire extinguishing mechanism (4) comprises two groups of spray plates (409) arranged in the transformer chamber (101), the outer wall of the first fireproof plate (300) is provided with a reciprocating lifting mechanism (6), the outer walls of the two groups of spray plates (409) are provided with multiple groups of spray heads (411), the tops of the two groups of spray plates (409) are provided with fourth delivery pipes (408), the inner walls of the two groups of spray plates (409) are provided with multiple groups of nozzles (410), the two groups of fourth delivery pipes (408) are connected with second telescopic pipes (407), the outer wall of the second telescopic pipe (407) is provided with a second delivery pipe (404), and the transformer chamber (1 01) is provided with a first telescopic tube (405), two groups of third delivery tubes (406) are provided on the outer wall of the first telescopic tube (405), the nozzle (410) is connected to the third delivery tube (406), the first telescopic tube (405) is connected to the first delivery tube (401), a protection box (402) is provided on the rear side wall of the substation (1), a dry powder tank (400) and a nitrogen tank (403) are installed inside the protection box (402), one end of the first delivery tube (401) is connected to the dry powder tank (400), and one end of the second delivery tube (404) is connected to the nitrogen tank (403).

5. A substation with automatic fire extinguishing function as claimed in claim 4, characterized in that: The reciprocating lifting mechanism (6) includes a fixed plate (601) provided on the outer wall of the first fireproof plate (300), a lifting block (600) is provided at one end of the spray plate (409), a lifting rod (602) is provided on the top of the lifting block (600), one end of the lifting rod (602) passes through the bottom of the fixed plate (601) and is connected to a guide wheel (604) provided on the outside, a return spring (603) is sleeved on the outer wall of the lifting rod (602), one end of the return spring (603) is connected to the bottom of the fixed plate (601), and the other end of the return spring (603) is connected to the top of the lifting block (600), a guide plate (605) is provided on the inner wall of the transformer chamber (101), and the guide wheel (604) is in contact with the bottom of the guide plate (605).

6. A substation with automatic fire extinguishing function as claimed in claim 5, characterized in that: The outer wall of the first fireproof plate (300) is provided with a second sliding rod (606), the outer wall of the second sliding rod (606) is sleeved with a second sliding block (607), and the outer wall of the second sliding block (607) is connected to one end of the spray plate (409).

7. A substation with automatic fire extinguishing function as claimed in claim 5, characterized in that: The two groups of the first fireproof panels (300) have openings on their opposite side walls, and the guide plates (605) match the two groups of openings.

8. A substation with automatic fire extinguishing function as claimed in claim 1, characterized in that: The sealing mechanism (5) comprises a mounting frame (500) provided on the outer wall of the chamber door (103), a sealing fireproof plate (501) being slidably connected inside the mounting frame (500), a clamping block (502) being provided on the top of the sealing fireproof plate (501), a cavity (506) being provided inside the clamping block (502), a sliding plate (508) being slidably connected inside the cavity (506), a spring (507) being provided on the side wall of the sliding plate (508), one end of the spring (507) being connected to the inner wall of the cavity (506), an inserting block (509) being connected to the other side wall of the sliding plate (508), a fixing block (503) being provided on the outer wall of the chamber door (103), a clamping groove (504) matching the clamping block (502) being provided on the bottom of the fixing block (503), and a fixing block (503) being provided on the outer wall of the fixing block (503) A socket (505) is provided to match the plug block (509); a fixed box (510) is provided at the top of the transformer chamber (101); one end of the second rotating shaft (310) is connected to a bearing 1 provided at the bottom of the fixed box (510); a cam (511) is sleeved and installed on the outer wall of the second rotating shaft (310); an extrusion plate (512) is slidably connected to the fixed box (510); an extrusion rod (514) is provided on the outer wall of the extrusion plate (512); one end of the extrusion rod (514) penetrates the inner wall of the fixed box (510) and matches the socket (505); a support spring (513) is sleeved on the outer wall of the extrusion rod (514); one end of the support spring (513) is connected to the right side wall of the extrusion plate (512); and the other end of the support spring (513) is connected to the inner wall of the fixed box (510).

9. A substation with automatic fire extinguishing function as claimed in claim 8, characterized in that: A limiting plate (515) is sleeved and installed on the outer wall of the extrusion rod (514), and the limiting plate (515) is arranged outside the fixing box (510).

10. A substation with automatic fire extinguishing function as claimed in claim 2, characterized in that: A through hole is provided at the inner bottom of the protective cover (106), and a second bearing is sleeved and mounted on the outer wall of the first rotating shaft (306), and the second bearing matches the inner wall of the through hole.

Images