A substation with automatic fire extinguishing function

Abstract

The application discloses a transformer substation with automatic fire extinguishing function and relates to the technical field of transformer substation fire extinguishing. The application comprises a transformer substation, which comprises a low-voltage chamber, a transformer chamber, a high-voltage chamber and a protective cover. A transformer is arranged at the bottom of the transformer chamber. A smoke alarm is arranged on the inner wall of the transformer chamber. A sealing mechanism is arranged on the side wall of the chamber door. A fire extinguishing mechanism is arranged in the transformer chamber. The smoke alarm and the fire extinguishing mechanism can timely discover and extinguish the fire caused by the transformer. The fire extinguishing mechanism uses nitrogen and dry powder to extinguish the fire. The nitrogen can boost the dry powder to be quickly sprayed, so that the dry powder can form a powerful airflow when being sprayed, and the dry powder extinguishing agent can be more quickly and uniformly covered on the surface of the burning object, thereby improving the fire extinguishing effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of substation fire extinguishing, in particular to a substation with automatic fire extinguishing function. BACKGROUND

[0002] The substation, also known as transformer station, is a place for voltage and current transformation, receiving and distributing electric energy in the power system. It converts high-voltage current transmitted by the power transmission line into low-voltage current through transformers and other equipment, so that electric energy can be distributed to residential, commercial, industrial and other fields. The substation installed in the city is mostly in the form of a box, and the box-type substation is mainly composed of a high-voltage room, a transformer room and a low-voltage room, which is a mechanical and electrical integration and operates in a fully enclosed manner.

[0003] The transformer provided in the transformer room of the box-type substation is the main equipment. The transformer is connected with the high-voltage room and the transformer room through cables, and has a high working intensity. If the oil tank of the transformer has problems such as oil leakage or oil shortage, it will affect the heat circulation and heat dissipation capacity of the oil, causing overheating and fire. In addition, poor contact at the transformer wiring, tap switch and other places will cause local overheating, and further cause fire. Because the transformer has an oil tank, it will cause the fire to spread rapidly, and it is easy to cause explosion. Therefore, it is necessary to improve the fire resistance of the transformer room.

[0004] In order to extinguish the fire in time, an automatic fire extinguishing device is arranged in the transformer room of the box-type substation. The existing automatic fire extinguishing device detects smoke by using a smoke alarm, and then controls the dry powder fire extinguishing equipment to spray carbon dioxide for fire extinguishing through a PCL controller. However, the space in the transformer room is large, and there is a lot of oxygen. In addition, the fire source is on the surface of the transformer. At the same time, the air inlet of the box-type substation will continuously enter air, so it is difficult to rapidly reduce the oxygen concentration in the box-type substation. Because the air inlet will dilute the sprayed carbon dioxide, it is easy to cause the fire to spread, and reduce the fire extinguishing effect. In addition, the position of the nozzle is fixed, and the spraying range is limited, so it is difficult to quickly suffocate the fire source and avoid causing greater loss. Therefore, we propose a substation with automatic fire extinguishing function. SUMMARY

[0005] In order to solve the problem that the space in the existing transformer room is large, there is a lot of oxygen, and the fire source is on the surface of the transformer. At the same time, the air inlet of the box-type substation will continuously enter air, so it is difficult to rapidly reduce the oxygen concentration in the box-type substation. Because the air inlet will dilute the sprayed carbon dioxide, it is easy to cause the fire to spread, and reduce the fire extinguishing effect. In addition, the position of the nozzle is fixed, and the spraying range is limited, so it is difficult to quickly suffocate the fire source and avoid causing greater loss. Therefore, we propose a substation with automatic fire extinguishing function.

[0006] To solve the above technical problems, the present application adopts the following technical scheme: a transformer substation with automatic fire extinguishing function, comprising a transformer substation, the transformer substation comprising a low-voltage chamber, a transformer chamber, a high-voltage chamber and a protective cover, a chamber door is hingedly arranged on the front side wall of the transformer chamber, a ventilation frame is embeddedly arranged on the outer side wall of the chamber door, a transformer is arranged on the inner bottom of the transformer chamber, a smoke alarm is arranged on the inner wall of the transformer chamber, a sealing mechanism is arranged in the transformer chamber, a sealing mechanism is arranged on the side wall of the chamber door, and a fire extinguishing mechanism is arranged in the transformer chamber.

[0007] Preferably, the sealing mechanism comprises two groups of first fireproof plates arranged in the transformer chamber, a second fireproof plate is hingedly arranged on one side of each of the two groups of first fireproof plates, a first connecting block is arranged on the top of each of the two groups of first fireproof plates, a second connecting block is arranged on the top of each of the two groups of second fireproof plates, a first rotating shaft is arranged in the transformer chamber, one end of the first rotating shaft penetrates through the top of the transformer chamber and is connected with a driven pulley arranged in the protective cover, the other end of the first rotating shaft is provided with a second driving bevel gear, a second rotating shaft is rotatably arranged in the protective cover, a first driven bevel gear is sleevedly arranged on the outer wall of the second rotating shaft, a motor is arranged on the inner bottom of the protective cover, the output end of the motor is connected with a first driving bevel gear meshing with the first driven bevel gear, a driving pulley is arranged 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 sleevedly arranged on the outer wall of the first rotating shaft, two groups of first connecting rods are hingedly arranged on the bottom of the disc, one end of each of the two groups of first connecting rods is hingedly connected with the opposite side wall of each of the two groups of first connecting blocks, a lead screw is connected with the rear side wall of the transformer chamber through a bearing, a second driven bevel gear meshing with a second driving bevel gear is sleevedly arranged on the outer wall of the lead screw, a first sliding block is sleeved on the outer wall of the lead screw, two groups of second connecting rods are hingedly arranged on the outer wall of the first sliding block, one end of each of the two groups of second connecting rods is hingedly connected with the outer side wall of each of the two groups of second connecting blocks.

[0008] Preferably, a first sliding rod is movably arranged on the front side wall of the first sliding block, one end of the first sliding rod is connected with the rear side wall of the transformer chamber.

[0009] Preferably, the fire extinguishing mechanism comprises two groups of spray plates arranged in the transformer chamber, a reciprocating lifting mechanism is arranged on the outer side wall of the first fireproof plate, a plurality of spray heads are arranged on the outer side wall of each of the two groups of spray plates, a fourth conveying pipe is arranged on the top of each of the two groups of spray plates, a plurality of nozzles are arranged on the inner side wall of each of the two groups of spray plates, a second telescopic pipe is connected with the two groups of fourth conveying pipes, a second conveying pipe is arranged on the outer side wall of the second telescopic pipe, a first telescopic pipe is arranged in the transformer chamber, two groups of third conveying pipes are arranged on the outer side wall of the first telescopic pipe, the nozzles are connected with the third conveying pipes, a first conveying pipe is connected with the first telescopic pipe, a protective box is arranged on the rear side wall of the transformer substation, a dry powder tank and a nitrogen tank are arranged in the protective box, one end of the first conveying pipe is connected with the dry powder tank, and one end of the second conveying pipe is connected with the nitrogen tank.

[0010] Preferably, the reciprocating lifting mechanism comprises a fixed plate arranged on the outer side wall of the first fireproof plate, one end of the spray plate is provided with a lifting block, the top of the lifting block is provided with a lifting rod, one end of the lifting rod penetrates through the bottom of the fixed plate and is connected with an external guide wheel, a return spring is sleeved on the outer wall of the lifting rod, one end of the return spring is connected with the bottom of the fixed plate, the other end of the return spring is connected with the top of the lifting block, a guide plate is arranged on the inner wall of the pressure changing chamber, and the guide wheel is in contact with the bottom of the guide plate.

[0011] Preferably, the outer side wall of the first fireproof plate is provided with a second sliding rod, and the outer wall of the second sliding rod is sleeved with a second sliding block.

[0012] Preferably, the opposite side walls of the two groups of first fireproof plates are both provided with openings, and the guide plate is matched with the two groups of openings.

[0013] Preferably, the sealing mechanism comprises a mounting frame arranged on the outer side wall of the chamber door, a sealing fireproof plate is slidably connected in the mounting frame, a clamping block is arranged on the top of the sealing fireproof plate, a cavity is arranged in the clamping block, a sliding plate is slidably connected in the cavity, a spring is arranged on the side wall of the sliding plate, one end of the spring is connected with the inner side wall of the cavity, an insertion block is arranged on the other side wall of the sliding plate, a fixed block is arranged on the outer side wall of the chamber door, a clamping groove matched with the clamping block is arranged in the bottom of the fixed block, an insertion hole matched with the insertion block is arranged on the outer side wall of the fixed block, a fixed box is arranged on the inner top of the pressure changing chamber, one end of the second rotating shaft is connected with bearing one arranged in the inner bottom of the fixed box, a cam is sleeved and arranged on the outer wall of the second rotating shaft, a pressing plate is slidably connected in the fixed box, a pressing rod is arranged on the outer side wall of the pressing plate, one end of the pressing rod penetrates through the inner side wall of the fixed box and is matched with the insertion hole, a supporting spring is sleeved on the outer wall of the pressing rod, one end of the supporting spring is connected with the right side wall of the pressing plate, and the other end of the supporting spring is connected with the inner side wall of the fixed box.

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

[0015] Preferably, a through hole is arranged in the inner bottom of the protection cover, bearing two is sleeved and arranged on the outer wall of the first rotating shaft, and bearing two is matched with the inner wall of the through hole.

[0016] Compared with the prior art, the beneficial effects of the present application are that:

[0017] 1. This invention, by setting up a smoke detector and a fire extinguishing mechanism, enables timely detection and extinguishing of fires caused by the transformer of this application. At the same time, the fire extinguishing mechanism utilizes the combination of nitrogen and dry powder for fire extinguishing. Nitrogen can help propel the dry powder to be sprayed quickly, so that the dry powder forms a strong airflow when sprayed, ensuring that the dry powder extinguishing agent can cover the surface of the burning material more quickly and evenly, thereby improving the fire extinguishing efficiency. Nitrogen can also reduce the oxygen content, prevent the fire from spreading, and improve the fire extinguishing effect.

[0018] 2. By setting up a sealing mechanism, this invention can seal the transformer during fire extinguishing, so that the transformer is extinguished in a closed environment. This allows nitrogen to quickly reduce the oxygen content around the transformer, while dry powder is difficult to overflow. The dry powder fills the closed environment, reducing the possibility of fire reignition and further improving the fire extinguishing effect.

[0019] 3. By setting a sealing mechanism, the present invention can seal the ventilation frame before sealing the transformer, preventing outside air from entering the transformer chamber and reducing the possibility of oxygen entering. It can work with the sealing mechanism to quickly reduce the oxygen concentration in the transformer chamber.

[0020] 4. By setting up a reciprocating lifting mechanism, the first fireproof plate of this application can drive the spray plate to reciprocate up and down when it closes the transformer in relative motion, thereby increasing the spray range, quickly suffocating the fire source, and accelerating the fire extinguishing speed. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

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

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

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

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

[0027] Figure 6Structure diagram of sealing mechanism of the application.

[0028] Figure 7 Structure diagram of internal structure of fixing block and clamping block of the application.

[0029] Figure 8 Structure diagram of internal structure of fixing box of the application.

[0030] Figure 9 Structure diagram of the application Figure 3 Enlarged structure diagram of position A in the application.

[0031] Figure 10 Structure diagram of the application Figure 3 Enlarged structure diagram of position B in the application.

[0032] Figure 11 Structure diagram of the application Figure 4 Enlarged structure diagram of position C in the application.

[0033] In the figure: 1, transformer substation; 100, low-voltage room; 101, voltage transformation room; 102, high-voltage room; 103, room door; 104, ventilation frame; 105, transformer; 106, protective cover; 2, smoke alarm; 3, sealing mechanism; 300, first fireproof plate; 301, second fireproof plate; 302, first connecting block; 303, first connecting rod; 304, second connecting rod; 305, second connecting block; 306, first rotating shaft; 307, 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 sliding rod; 319, first sliding block; 4, fire extinguishing mechanism; 400, dry powder tank; 401, first conveying pipe; 402, protective box; 403, nitrogen tank; 404, second conveying pipe; 405, first telescopic pipe; 406, third conveying pipe; 407, second telescopic pipe; 408, fourth conveying pipe; 409, spray plate; 410, spray nozzle; 411, spray head; 5, sealing mechanism; 500, mounting frame; 501, sealing fireproof plate; 502, clamping block; 503, fixing block; 504, clamping groove; 505, insertion hole; 506, cavity; 507, spring; 508, sliding plate; 509, insertion block; 510, fixing box; 511, cam; 512, extrusion plate; 513, supporting spring; 514, extrusion rod; 515, limiting plate; 6, reciprocating lifting mechanism; 600, lifting block; 601, fixed plate; 602, lifting rod; 603, return spring; 604, guide wheel; 605, guide plate; 606, second sliding rod; 607, second sliding block. DETAILED DESCRIPTION

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example: Figures 1-11 As shown, the present invention provides a substation with 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. A door 103 is hinged to the front side wall of the transformer chamber 101. A ventilation frame 104 is embedded in the outer side wall of the door 103. A transformer 105 is installed at the bottom of the transformer chamber 101. A smoke alarm 2 is installed on the inner wall of the transformer chamber 101. The smoke alarm 2 is electrically connected to an external PCL controller. At the same time, the PCL controller can control other mechanisms to realize automatic fire extinguishing (PCL controller control is prior art). A sealing mechanism 3 is provided inside the transformer chamber 101. A sealing mechanism 5 is provided on the side wall of the door 103. A fire extinguishing mechanism 4 is provided inside the transformer chamber 101.

[0036] The closing mechanism 3 comprises two groups of first fireproof plates 300 arranged in the variable pressure chamber 101, the two groups of first fireproof plates 300 are hingedly provided with second fireproof plates 301 on one side, the top of the two groups of first fireproof plates 300 is provided with first connecting blocks 302, the top of the two groups of second fireproof plates 301 is provided with second connecting blocks 305, the variable pressure chamber 101 is provided with a first rotating shaft 306, one end of the first rotating shaft 306 penetrates the top of the variable pressure chamber 101 and is connected with a driven pulley 307 arranged in the inner top of the protective cover 106, a through hole is arranged in the inner bottom of the protective cover 106, a bearing two is arranged on the outer wall of the first rotating shaft 306 in a sleeved manner, the bearing two is matched with the inner wall of the through hole, and the first rotating shaft 306 rotates more stably under the action of the bearing two, the other end of the first rotating shaft 306 is provided with a second driving bevel gear 317, a second rotating shaft 310 is rotatably arranged in the protective cover 106, a first driven bevel gear 311 is arranged on the outer wall of the second rotating shaft 310 in a sleeved manner, a motor 313 is arranged in the inner bottom of the protective cover 106, a first driving bevel gear 312 engaged with the first driven bevel gear 311 is connected to the output end of the motor 313, a driving pulley 309 is arranged on the top of the second rotating shaft 310, a belt 308 is arranged on the outer walls of the driving pulley 309 and the driven pulley 307 in a sleeved manner, a disc 314 is arranged on the outer wall of the first rotating shaft 306 in a sleeved manner, two groups of first connecting rods 303 are hingedly arranged on the bottom of the disc 314, one end of each of the two groups of first connecting rods 303 is hingedly connected to the opposite side wall of the two groups of first connecting blocks 302, a lead screw 315 is connected to the rear side wall of the variable pressure chamber 101 through a bearing, a second driven bevel gear 316 engaged with the second driving bevel gear 317 is arranged on the outer wall of the lead screw 315 in a sleeved manner, a first sliding block 319 is arranged on the outer wall of the lead screw 315 in a sleeved manner, two groups of second connecting rods 304 are hingedly arranged on the outer wall of the first sliding block 319, one end of each of the two groups of second connecting rods 304 is hingedly connected to the outer side wall of the two groups of second connecting blocks 305, a first sliding rod 318 is movably arranged 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 of the variable pressure chamber 101. The first sliding block 319 moves more stably on the outer wall of the lead screw 315 under the action of the first sliding rod 318.

[0037] By adopting the above technical scheme, when the transformer 105 is extinguished, the first fireproof plate 300 and the second fireproof plate 301 are used to close it, so that the transformer 105 is extinguished in a closed environment, nitrogen can rapidly reduce the oxygen content around the transformer 105, and dry powder is difficult to overflow, so that the dry powder fills the closed environment, and the possibility of fire source rekindling is reduced.

[0038] The fire extinguishing mechanism 4 comprises two groups of spray plates 409 arranged in the variable pressure chamber 101, the outer side wall of the first fireproof plate 300 is provided with a reciprocating lifting mechanism 6, the outer side wall of each group of spray plates 409 is provided with a plurality of spray heads 411, the top of each group of spray plates 409 is provided with a fourth conveying pipe 408, the inner side wall of each group of spray plates 409 is provided with a plurality of nozzles 410, the two groups of fourth conveying pipes 408 are connected with a second telescopic pipe 407, the outer side wall of the second telescopic pipe 407 is provided with a second conveying pipe 404, the variable pressure chamber 101 is provided with a first telescopic pipe 405, the outer side wall of the first telescopic pipe 405 is provided with two groups of third conveying pipes 406, the nozzles 410 are connected with the third conveying pipes 406, the first telescopic pipe 405 is connected with a first conveying pipe 401, the rear side wall of the transformer substation 1 is provided with a protection box 402, the protection box 402 is internally provided with a dry powder tank 400 and a nitrogen tank 403, one end of the first conveying pipe 401 is connected with the dry powder tank 400, and one end of the second conveying pipe 404 is connected with the nitrogen tank 403.

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

[0040] The reciprocating lifting mechanism 6 comprises a fixed plate 601 arranged on the outer side wall of the first fireproof plate 300, one end of the spray plate 409 is provided with a lifting block 600, the top of the lifting block 600 is provided with a lifting rod 602, one end of the lifting rod 602 penetrates through the bottom of the fixed plate 601 and is connected with an external guide wheel 604, a return spring 603 is sleeved on the outer wall of the lifting rod 602, one end of the return spring 603 is connected with the bottom of the fixed plate 601, and the other end of the return spring 603 is connected with the top of the lifting block 600; a guide plate 605 is arranged on the inner wall of the variable pressure chamber 101, the guide wheel 604 is in contact with the bottom of the guide plate 605, the opposite side walls of the two groups of first fireproof plates 300 are both provided with openings, the guide plate 605 is matched with the two groups of openings, the guide plate 605 cannot block the movement of the first fireproof plate 300 under the action of the openings, the outer side wall of the first fireproof plate 300 is provided with a second sliding rod 606, the second sliding rod 606 is sleeved with a second sliding block 607, and the outer side wall of the second sliding block 607 is connected with one end of the spray plate 409; under the action of the second sliding rod 606 and the second sliding block 607, the spray plate 409 moves up and down more stably.

[0041] By adopting the above technical scheme, 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 provided in a convex-concave manner, and the convex-concave portions are provided in an isosceles trapezoidal shape), so that the guide wheel 604 can reciprocate up and down, and under the cooperation of the reset spring 603, the guide wheel 604 can drive the lifting rod 602 and the lifting block 600 to reciprocate up and down, so that the lifting block 600 drives the spray plate 409 to reciprocate up and down, which can simulate the arm driving the spray head 411 to reciprocate up and down to spray the fire source, thereby improving the spraying range.

[0042] The sealing mechanism 5 comprises a mounting frame 500 provided on the outer side wall of the chamber door 103, a sealing fireproof plate 501 slidably connected in the mounting frame 500, a clamping block 502 provided on the top of the sealing fireproof plate 501, a cavity 506 formed in the clamping block 502, a sliding plate 508 slidably connected in the cavity 506, a spring 507 provided on the side wall of the sliding plate 508, one end of the spring 507 connected with the inner side wall of the cavity 506, an insertion block 509 connected with the other side wall of the sliding plate 508, a fixed block 503 provided on the outer side wall of the chamber door 103, a clamping groove 504 formed in the bottom of the fixed block 503 and matched with the clamping block 502, an insertion hole 505 formed in the outer side wall of the fixed block 503 and matched with the insertion block 509, a fixed box 510 provided on the inner top of the transformer chamber 101, a bearing one provided in the inner bottom of the fixed box 510 and connected with one end of the second rotating shaft 310, a cam 511 sleeved and mounted on the outer wall of the second rotating shaft 310, a pressing plate 512 slidably connected in the fixed box 510, a pressing rod 514 provided on the outer side wall of the pressing plate 512, one end of the pressing rod 514 penetrating through the inner side wall of the fixed box 510 and matched with the insertion hole 505, a supporting spring 513 sleeved on the outer wall of the pressing rod 514, one end of the supporting spring 513 connected with the right side wall of the pressing plate 512, and the other end of the supporting spring 513 connected with the inner side wall of the fixed box 510.

[0043] By adopting the above technical scheme, 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 by cooperating with the first fireproof plate 300 and the second fireproof plate 301.

[0044] The outer wall of the pressing rod 514 is sleeved and mounted with a limiting plate 515, and the limiting plate 515 is arranged outside the fixed box 510.

[0045] By adopting the above technical scheme, the pressing rod 514 can be prevented from being completely pressed into the insertion hole 505 under the action of the limiting block 515, so that when the insertion block 509 is pressed into the cavity 506 when the pressing rod 514 presses the insertion block 509, the sealing fireproof plate 501 can quickly drop under the action of gravity, and the sealing fireproof plate 501 can quickly seal the ventilation frame 104 to isolate air.

[0046] Because high pressure chamber 102 and low pressure chamber 100 are provided with high pressure control cabinet and low pressure control cabinet, the fire extinguishing mechanism 4 of the application is also applicable to the cable connection of high pressure control cabinet and low pressure control cabinet, and the mode of moving the spray plate 409 can use the electric telescopic rod.

[0047] Working principle: when the transformer 105 appears poor contact or overheat fire, the smoke alarm 2 will monitor the smoke, the smoke alarm 2 will transmit the signal to the PCL controller (this is prior art), the PCL controller makes timely control, the dry powder in the dry powder tank 400 enters the nozzle 410 from the first conveying pipe 401, the second telescopic pipe 405 and the third conveying 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 conveying pipe 404, the second telescopic pipe 407 and the fourth conveying pipe 408, and then is discharged by the spray head 411, the pressure of the nitrogen discharge can give the dry powder sprayed an acceleration, forming a powerful airflow, ensuring that the dry powder can cover the burning surface more quickly and uniformly, improving the fire extinguishing efficiency, at the same time, the motor 313 drives the first driving bevel gear 312 to rotate, the first driving bevel gear 312 drives the first driven bevel gear 311 to rotate, the first driven bevel gear 311 drives the second rotating shaft 310 to rotate, the second rotating shaft 310 rotates and drives the cam 511 to rotate, the protruding part of the cam 511 indirectly extrudes the extrusion plate 512, the extrusion plate 512 can extrude the supporting spring 513 and the extrusion rod 514, the extrusion rod 514 can reciprocate under the action of the supporting spring 513, the extrusion rod 514 can extrude the plug 509, the plug 509 drives the sliding plate 508 to extrude the spring 507, the plug 509 is extruded into the cavity 506, and then the sealing fireproof plate 501 rapidly falls under the action of gravity, the sealing fireproof plate 501 can rapidly seal the ventilation frame 104, isolate air, and prevent air from entering the transformer chamber 101 from the ventilation frame 104;

[0048] Meanwhile, the second rotating shaft 310 rotates to drive the driving pulley 309 to rotate, and the pulley 308, the driven pulley 307 and the first rotating shaft 306 cooperate to drive the disc 314 to rotate, the disc 314 drives the first connecting rod 303 to make circular motion, the first connecting rod 303 drives the two groups of first fireproof plates 300 to move relative to each other to seal the transformer 105, meanwhile, the first rotating shaft 306 drives the second driving bevel gear 317 to rotate, the second driving bevel gear 317 drives the second driven bevel gear 316 to rotate, the second driven bevel gear 316 drives the lead screw 315 to rotate, the first sliding rod 318 cooperates to drive the first sliding block 319 to move on the outer wall of the lead screw 315, the first sliding block 319 drives the second connecting rod 304 to rotate, the second connecting rod 304 drives the second fireproof plate 301 to rotate to achieve closing, so that the transformer 105 can be sealed in a small environment under the action of the first fireproof plate 300 and the second fireproof plate 301, so that the nitrogen can rapidly reduce the oxygen content around the transformer 105, and the dry powder is difficult to overflow, and the fire on the transformer 105 can be better extinguished;

[0049] When the first fireproof plate 300 moves relative to each other, 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 convex-concave, and the convex-concave is in the shape of an isosceles trapezoid), so that the guide wheel 604 can move up and down reciprocatingly, the guide wheel 604 drives the lifting rod 602 to move up and down reciprocatingly, so that the lifting block 600 can move up and down reciprocatingly under the cooperation of the return spring 603, so that the lifting block 600 drives the spray plate 409 to move up and down reciprocatingly, which can simulate the arm to drive the spray head 411 to reciprocatingly lift to spray the fire source (in life, when the handheld dry powder extinguisher is used to extinguish the fire, the spray pipe is moved up and down to extinguish the fire source, so as to improve the extinguishing effect), improve the spraying range, and quickly suffocate the fire source.

[0050] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A transformer substation with automatic fire extinguishing function, comprising a transformer substation (1), the transformer substation (1) comprising a low-voltage chamber (100), a transformer chamber (101), a high-voltage chamber (102) and a protective cover (106), a chamber door (103) being hingedly arranged on the front side wall of the transformer chamber (101), a ventilation frame (104) being embeddedly arranged on the outer side wall of the chamber door (103), and a transformer (105) being arranged on the inner bottom of the transformer chamber (101), characterized in that: The variable pressure chamber (101) is provided with a smoke alarm (2), the variable pressure chamber (101) is provided with a sealing mechanism (3), the chamber door (103) is provided with a sealing mechanism (5), and the variable pressure chamber (101) is provided with a fire extinguishing mechanism (4); The sealing mechanism (3) comprises two groups of first fireproof plates (300) arranged in the variable pressure chamber (101), the two groups of first fireproof plates (300) are hingedly provided with second fireproof plates (301) on one side, the two groups of first fireproof plates (300) are provided with first connecting blocks (302) on the top, the two groups of second fireproof plates (301) are provided with second connecting blocks (305) on the top, the variable pressure chamber (101) is provided with a first rotating shaft (306), one end of the first rotating shaft (306) penetrates the top of the variable pressure chamber (101) and is connected with a driven pulley (307) arranged in the protective cover (106), the other end of the first rotating shaft (306) is provided with a second driving bevel gear (317), the protective cover (106) is rotatably provided with a second rotating shaft (310), the second rotating shaft (310) is provided on the outer wall 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 driving bevel gear (312) engaged with the first driven bevel gear (311), the top of the second rotating shaft (310) is provided with a driving pulley (309), the outer wall of the driving pulley (309) and the driven pulley (307) is sleeved with a belt (308), the outer wall of the first rotating shaft (306) is sleeved and mounted with a disc (314), the bottom of the disc (314) is hingedly provided with two groups of first connecting rods (303), one end of each group of first connecting rods (303) is hingedly connected with the opposite side wall of each group of first connecting blocks (302), the rear side wall of the variable pressure chamber (101) is connected with a lead screw (315) through a bearing, the outer wall of the lead screw (315) is sleeved and mounted with a second driven bevel gear (316) engaged with the second driving bevel gear (317), the outer wall of the lead screw (315) is sleeved with a first sliding block (319), the outer wall of the first sliding block (319) is hingedly provided with two groups of second connecting rods (304), one end of each group of second connecting rods (304) is hingedly connected with the outer side wall of each group of second connecting blocks (305).

2. A substation having automatic fire extinguishing function as claimed in claim 1, wherein, The first sliding block (319) is movably provided with a first sliding rod (318) penetrating the front side wall, and one end of the first sliding rod (318) is connected with the rear side wall of the variable pressure chamber (101).

3. A substation having automatic fire extinguishing function as claimed in claim 2, wherein, The fire extinguishing mechanism (4) comprises two groups of spray plates (409) arranged in the variable pressure chamber (101), the outer side wall of the first fireproof plate (300) is provided with a reciprocating lifting mechanism (6), the outer side wall of each of the two groups of spray plates (409) is provided with a plurality of spray heads (411), the top of each of the two groups of spray plates (409) is provided with a fourth conveying pipe (408), the inner side wall of each of the two groups of spray plates (409) is provided with a plurality of nozzles (410), the two groups of fourth conveying pipes (408) are connected with a second telescopic pipe (407), the outer side wall of the second telescopic pipe (407) is provided with a second conveying pipe (404), the variable pressure chamber (101) is provided with a first telescopic pipe (405), the outer side wall of the first telescopic pipe (405) is provided with two groups of third conveying pipes (406), the nozzles (410) are connected with the third conveying pipes (406), the first telescopic pipe (405) is connected with a first conveying pipe (401), the rear side wall of the transformer substation (1) is provided with a protection box (402), the protection box (402) is internally provided with a dry powder tank (400) and a nitrogen tank (403), one end of the first conveying pipe (401) is connected with the dry powder tank (400), and one end of the second conveying pipe (404) is connected with the nitrogen tank (403).

4. A substation having automatic fire extinguishing function as claimed in claim 3, wherein, The reciprocating lifting mechanism (6) comprises a fixed plate (601) arranged on the outer side wall of the first fireproof plate (300), one end of the spray plate (409) is provided with a lifting block (600), the top of the lifting block (600) is provided with a lifting rod (602), one end of the lifting rod (602) penetrates through the bottom of the fixed plate (601) and is connected with an external guide wheel (604), the outer wall of the lifting rod (602) is sleeved with a reset spring (603), one end of the reset spring (603) is connected with the bottom of the fixed plate (601), and the other end of the reset spring (603) is connected with the top of the lifting block (600), the inner wall of the variable pressure chamber (101) is provided with a guide plate (605), and the guide wheel (604) is in contact with the bottom of the guide plate (605).

5. A substation having automatic fire extinguishing function as claimed in claim 4, wherein, The outer side 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 side wall of the second sliding block (607) is connected with one end of the spray plate (409).

6. A substation having automatic fire extinguishing function as claimed in claim 5, wherein, The opposite side walls of the two groups of first fireproof plates (300) are each provided with an opening, and the guide plate (605) is matched with the two openings.

7. A substation having automatic fire extinguishing function as claimed in claim 1, wherein, The sealing mechanism (5) includes the mounting frame (500) provided on the outer side wall of the chamber door (103), the sealing fireproof plate (501) is slidably connected in the mounting frame (500), the clamping block (502) is provided on the top of the sealing fireproof plate (501), the cavity (506) is formed in the clamping block (502), the sliding plate (508) is slidably connected in the cavity (506), the spring (507) is provided on the side wall of the sliding plate (508), one end of the spring (507) is connected with the inner side wall of the cavity (506), the plug block (509) is connected on the other side wall of the sliding plate (508), the fixed block (503) is provided on the outer side wall of the chamber door (103), the clamping groove (504) matched with the clamping block (502) is formed in the bottom of the fixed block (503), the insertion hole (505) matched with the plug block (509) is formed in the outer side wall of the fixed block (503), the fixed box (510) is provided on the inner top of the variable pressure chamber (101), the bearing one is provided on the inner bottom of the fixed box (510), and the second rotating shaft (310) is connected with the bearing one; the cam (511) is installed on the outer wall of the second rotating shaft (310); the extrusion plate (512) is slidably connected in the fixed box (510), the extrusion rod (514) is provided on the outer side wall of the extrusion plate (512), one end of the extrusion rod (514) penetrates through the inner side wall of the fixed box (510) and is matched with the insertion hole (505), the supporting spring (513) is sleeved on the outer wall of the extrusion rod (514), one end of the supporting spring (513) is connected with the right side wall of the extrusion plate (512), and the other end of the supporting spring (513) is connected with the inner side wall of the fixed box (510).

8. A substation having automatic fire extinguishing function as claimed in claim 7, wherein, The extrusion rod (514) is sleeved and installed with a limiting plate (515) on the outer wall, and the limiting plate (515) is arranged outside the fixed box (510).

9. A substation having automatic fire extinguishing function as claimed in claim 1, wherein, The protection cover (106) is provided with a through hole in the inner bottom, the second rotating shaft (306) is sleeved and installed with a bearing two on the outer wall, and the bearing two is matched with the inner wall of the through hole.

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