Self-fireproof dry-type transformer

Abstract

The invention is applicable to the technical field of dry-type transformers, and provides a self-fireproof dry-type transformer which comprises a dry-type transformer body and a protective box body, the dry-type transformer body is mounted in the protective box body, and the self-fireproof dry-type transformer further comprises an opening and closing door rotationally connected with the front side wall of the protective box body; an air inlet is formed in the bottom of the protective box body, an air outlet is formed in the side wall of the protective box body, a liquid carbon dioxide storage tank is arranged on the inner wall of the protective box body, liquid carbon dioxide is filled in the liquid carbon dioxide storage tank, and the open end of the liquid carbon dioxide storage tank is connected with a connecting hose; and the tail end of the connecting hose is connected and communicated with the side wall of the shell. Compared with an existing sand burying and mixed solution fire extinguishing mode, the mode that oxygen is isolated by carbon dioxide to extinguish fire does not increase damage to the dry-type transformer body.

Description

Technical Field

[0001] The invention belongs to the technical field of dry-type transformers, and in particular relates to a self-fire-proof dry-type transformer. Background Art

[0002] Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and equipment, etc. Simply put, dry-type transformers refer to transformers whose cores and windings are not immersed in insulating oil. The cooling methods are divided into natural air cooling (AN) and forced air cooling (AF).

[0003] The existing publication number is CN 215868874 U. A fireproof dry-type transformer is provided. In order to extinguish a fire in the dry-type transformer, a fire extinguishing material represented by lime powder or gravel is placed in a bag. Once a fire occurs in the transformer body, the bag is burned and the fire extinguishing material falls and spills onto the upper surface of the fire source, thereby covering the fire source to control the fire and extinguish the fire.

[0004] Although the above method can extinguish the fire, fire extinguishing materials such as lime powder or gravel will adhere to the transformer body. The transformer body will burn the fire extinguishing materials due to the height of the fire, making the fire extinguishing materials firmly adhere to the transformer body, causing secondary damage to the transformer body and increasing the difficulty of subsequent maintenance of the transformer body. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a self-fireproof dry-type transformer, aiming to solve the problem that fire extinguishing materials such as lime powder or gravel may cause secondary damage to the transformer body, thereby increasing the difficulty of subsequent maintenance of the transformer body.

[0006] The present invention is implemented in this way. A self-fireproof dry-type transformer includes a dry-type transformer body and a protective box body. The dry-type transformer body is installed in the protective box body, and also includes: an opening and closing door rotatably connected to the front side wall of the protective box body; an air inlet is arranged at the bottom of the protective box body, an exhaust port is arranged on the side wall of the protective box body, a liquid carbon dioxide storage tank is arranged on the inner wall of the protective box body, the open end of the liquid carbon dioxide storage tank is connected to a connecting hose, and the end of the connecting hose is connected to the side wall of the connecting shell; the connecting shell is fixed at the bottom of the protective box body, and the protective box body is arranged An exhaust pipe is provided, the exhaust pipe is arranged at the lower end of the dry-type transformer body, a plurality of exhaust ports are arranged on the exhaust pipe, and the end of the exhaust pipe is arranged on the side wall of the connecting shell; a vertical moving rod is movably provided at the upper end of the connecting shell, a connecting component is arranged in the connecting shell, a high-temperature trigger component is arranged in the protective box, the high-temperature trigger component is located at the upper end of the dry-type transformer body, the high-temperature trigger component drives the vertical moving rod to move upward through the high temperature generated by the combustion of the dry-type transformer body, and the connecting component connects the connecting hose with the exhaust pipe by the upward movement of the vertical moving rod.

[0007] A further technical solution is that the high-temperature trigger assembly includes two guide shafts 1 fixed at the top of the protective box body, the two guide shafts 1 are slidably connected with a mounting plate, a spring 1 and a fixing sleeve are fixed at the top of the protective box body, the end of the spring 1 is connected to the mounting plate, and the fixing sleeve passes through the mounting plate; a stop pin is slidably connected to the side wall of the fixing sleeve, one end of the stop pin extending into the fixing sleeve is connected with a spring 2 and a glass tube, the ends of the spring 2 and the glass tube are both connected to the inner wall of the fixing sleeve, a stop socket cooperating with the stop pin is provided on the mounting plate, and the glass tube is filled with an organic solution.

[0008] A further technical solution is that the connecting component includes a vertical connecting groove arranged in a connecting shell, a piston block is slidably connected in the vertical connecting groove, the vertical moving rod is fixed to the upper end of the piston block, a through hole is penetrated through the side wall of the piston block, two sealing rings are arranged on the side wall of the piston block, and the two sealing rings are located at the upper end of the through hole, and the connecting hose and the exhaust pipe are both connected to the vertical connecting groove.

[0009] According to a further technical solution, a sealing mechanism 1 and a sealing mechanism 2 are also provided on the protective box body, wherein the sealing mechanism 1 seals the air inlet by moving the vertical moving rod upward, and the sealing mechanism 2 seals the air outlet by discharging liquid carbon dioxide from the liquid carbon dioxide storage tank.

[0010] A further technical solution is that the sealing mechanism includes multiple rotating shafts rotatably connected in the air inlet, and a sealing flap is fixed on each of the multiple rotating shafts. A transmission assembly is arranged in the bottom side wall of the protective box body, and the transmission assembly drives the multiple rotating shafts to rotate synchronously by moving the vertical moving rod up and down.

[0011] A further technical solution is that the transmission component 1 includes an installation groove 1 and a transverse slide groove arranged in the bottom side wall of the protective box body, the installation groove 1 and the transverse slide groove are connected to each other, one end of each of the plurality of rotating shafts 1 is fixed with a gear 1, and each of the plurality of gears 1 is arranged in the installation groove 1, a sliding rack is slidably connected in the transverse slide groove, and the sliding rack is meshed with multiple gears 1 at the same time, a spring 3 is arranged in the transverse slide groove, and a rope is connected to one end of the sliding rack close to the spring 3, a connecting rod is fixed on the vertical moving rod, and the end of the rope extends into the protective box body and is connected to the connecting rod.

[0012] A further technical solution is that the sealing mechanism 2 includes multiple rotating shafts 2 rotatably connected in the air inlet, and a sealing flap 2 is fixed on each of the multiple rotating shafts 2; two guide shafts 2 are fixed on the inner wall of the protective box body, and sliding blocks are slidably connected to the two guide shafts 2, and a spring 4 is connected to the lower end of the sliding block, and the lower end of the spring 4 is connected to the inner wall of the protective box body, and the liquid carbon dioxide storage tank is installed on the sliding block; it also includes a transmission component 2 arranged on the side wall of the protective box body, and the transmission component 2 drives the multiple rotating shafts 2 to rotate synchronously by discharging liquid carbon dioxide from the liquid carbon dioxide storage tank.

[0013] A further technical solution is that the transmission component 2 includes a vertical sliding groove arranged on the inner wall of the protective box body, a vertical sliding rod is slidably connected in the vertical sliding groove, the vertical sliding rod is connected to the sliding block, an installation groove 2 is arranged in the side wall of the protective box body, a plurality of the rotating shafts 2 are fixed with gear 2 at one end, a plurality of the gear 2 are arranged in the installation groove 2, and the installation groove 2 is connected to the vertical sliding groove, a vertical rack is embedded in the side of the sliding block close to the gear 2, and the vertical rack is meshed with a plurality of gear 2.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides a self-fireproof dry-type transformer. When the dry-type transformer body spontaneously ignites and catches fire, the high-temperature trigger component drives the vertical moving rod to move upward through the high temperature generated by the combustion of the dry-type transformer body, and the connecting component connects the connecting hose with the exhaust pipe by moving the vertical moving rod upward. At this time, the liquid carbon dioxide in the liquid carbon dioxide storage tank is discharged through the connecting hose, the connecting shell, the exhaust pipe and the exhaust port, so that the liquid carbon dioxide absorbs heat and gasifies. The carbon dioxide gas fills the protective box and wraps the dry-type transformer body, thereby isolating the dry-type transformer body from oxygen, thereby playing a fire extinguishing function. Compared with the existing sand burial and mixed solution fire extinguishing methods, the carbon dioxide fire extinguishing method of isolating oxygen will not increase damage to the dry-type transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a self-fire-proof dry-type transformer provided by the present invention;

[0017] Figure 2 The present invention provides Figure 1 Schematic diagram of the internal structure of the middle protection box;

[0018] Figure 3 The present invention provides Figure 1 Schematic diagram of the internal structure after removing the dry-type transformer body;

[0019] Figure 4 The present invention provides Figure 5 Schematic diagram of the structure when looking up at the tilt angle;

[0020] Figure 5 The present invention provides Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0021] Figure 6 The present invention provides Figure 5 A schematic diagram of the internal structure of the connected shell;

[0022] Figure 7 The present invention provides Figure 4 A schematic diagram of the enlarged structure of B;

[0023] Figure 8 The present invention provides Figure 7 Schematic diagram of the internal structure of the middle mounting plate and fixed sleeve;

[0024] Fig. 9 The present invention provides Figure 3 Schematic diagram of the enlarged structure of C;

[0025] Fig.10 The present invention provides Figure 3 Schematic diagram of the enlarged structure of D in the middle;

[0026] Fig.11 The present invention provides Fig.10 Schematic diagram of the enlarged structure of E.

[0027] In the attached figure: dry-type transformer body-101, protective box-102, air inlet-103, exhaust outlet-104, liquid carbon dioxide storage tank-105, connecting hose-106, connecting shell-107, exhaust pipe-108, exhaust outlet-109, vertical moving rod-110, connecting component-2, vertical connecting slide groove-201, piston block-202, through hole-203, sealing ring-204, high temperature trigger component-3, guide shaft-301, spring-302, mounting plate-303, fixing sleeve-304, stop pin-305, stop socket-306 , spring two-307, glass tube-308, sealing mechanism one-4, rotating shaft one-401, sealing flap one-402, mounting groove one-403, gear one-404, horizontal sliding groove-405, sliding rack-406, spring three-407, rope-408, connecting rod-409, sealing mechanism two-5, rotating shaft two-501, sealing flap two-502, guide shaft two-503, sliding block-504, spring four-505, vertical sliding groove-506, vertical sliding rod-507, mounting groove two-508, gear two-509, vertical rack-510. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0030] like Figure 1-Figure 5As shown, a self-fireproof dry-type transformer provided by an embodiment of the present invention includes a dry-type transformer body 101 and a protective box 102, wherein the dry-type transformer body 101 is installed in the protective box 102, and further includes: an opening and closing door rotatably connected to the front side wall of the protective box 102; an air inlet 103 is arranged at the bottom of the protective box 102, an exhaust port 104 is arranged on the side wall of the protective box 102, a liquid carbon dioxide storage tank 105 is arranged on the inner wall of the protective box 102, and the liquid carbon dioxide storage tank 105 is filled with liquid carbon dioxide, and the open end of the liquid carbon dioxide storage tank 105 is connected to a connecting hose 106, and the end of the connecting hose 106 is connected to the side wall of a connecting shell 107; the connecting shell 107 is fixed to the inner bottom of the protective box 102 The protective box 102 is provided with an exhaust pipe 108, and the exhaust pipe 108 is arranged at the lower end of the dry-type transformer body 101. The exhaust pipe 108 is provided with a plurality of exhaust ports 109, and the end of the exhaust pipe 108 is arranged on the side wall of the connecting shell 107; a vertical moving rod 110 is movably provided at the upper end of the connecting shell 107, and a connecting component 2 is arranged in the connecting shell 107. A high-temperature trigger component 3 is arranged in the protective box 102, and the high-temperature trigger component 3 is located at the upper end of the dry-type transformer body 101. The high-temperature trigger component 3 drives the vertical moving rod 110 to move upward through the high temperature generated by the combustion of the dry-type transformer body 101, and the connecting component 2 connects the connecting hose 106 with the exhaust pipe 108 by moving the vertical moving rod 110 upward.

[0031] In the embodiment of the present invention, when the dry-type transformer body 101 spontaneously ignites and catches fire, the high-temperature trigger component 3 drives the vertical moving rod 110 to move upward through the high temperature generated by the combustion of the dry-type transformer body 101, and the connecting component 2 connects the connecting hose 106 with the exhaust pipe 108 by moving the vertical moving rod 110 upward. At this time, the liquid carbon dioxide in the liquid carbon dioxide storage tank 105 is discharged through the connecting hose 106, the connecting shell 107, the exhaust pipe 108 and the exhaust port 109, so that the liquid carbon dioxide absorbs heat and gasifies. The carbon dioxide gas fills the protective box 102 and wraps the dry-type transformer body 101, thereby isolating the dry-type transformer body 101 from oxygen, thereby playing a fire extinguishing function. Compared with the existing sand burial and mixed solution fire extinguishing methods, the carbon dioxide isolating oxygen fire extinguishing method will not increase damage to the dry-type transformer body 101.

[0032] like Figure 1-Figure 8As shown, as a preferred embodiment of the present invention, the high temperature trigger component 3 includes two guide shafts 301 fixed at the top of the protective box 102, and the two guide shafts 301 are slidably connected with a mounting plate 303. A spring 302 and a fixing sleeve 304 are fixed at the top of the protective box 102, and the end of the spring 302 is connected to the mounting plate 303, and the fixing sleeve 304 penetrates the mounting plate 303; a stop pin 305 is slidably connected to the side wall of the fixing sleeve 304, and one end of the stop pin 305 extending into the fixing sleeve 304 is connected with a spring 2 307 and a glass tube 308, and the ends of the spring 2 307 and the glass tube 308 are both connected to the inner wall of the fixing sleeve 304, and a stop socket 306 cooperating with the stop pin 305 is provided on the mounting plate 303, and the glass tube 308 is filled with an organic solution, and the organic solution expands and bursts the glass tube 308 in a high temperature environment, and the organic solution includes kerosene.

[0033] In the embodiment of the present invention, the organic solution expands when encountering high temperature, and then bursts the glass tube 308. At this time, the stop pin 305 loses its supporting force, and the spring 2 307 pulls the stop pin 305 to move. The stop pin 305 disengages from the stop socket 306, and the mounting plate 303 loses its movement restriction. The spring 1 302 pulls the mounting plate 303 upward, and the mounting plate 303 drives the vertical moving rod 110 to move upward.

[0034] like Figure 1-Figure 6 As shown, as a preferred embodiment of the present invention, the connecting component 2 includes a vertical connecting groove 201 arranged in the connecting shell 107, and a piston block 202 is slidably connected in the vertical connecting groove 201. The vertical moving rod 110 is fixed to the upper end of the piston block 202. A through hole 203 is penetrated on the side wall of the piston block 202. Two sealing rings 204 are arranged on the side wall of the piston block 202, and the two sealing rings 204 are located at the upper end of the through hole 203. The connecting hose 106 and the exhaust pipe 108 are both connected to the vertical connecting groove 201.

[0035] In the embodiment of the present invention, in the initial state, the two sealing rings 204 are located above and below the connecting hose 106 and the exhaust pipe 108, thereby playing a sealing role; the upward moving vertical moving rod 110 drives the piston block 202 to move upward, and when the piston block 202 moves upward until the two ends of the through hole 203 coincide with the connecting hose 106 and the exhaust pipe 108, the through hole 203 connects the connecting hose 106 and the exhaust pipe 108.

[0036] like Figure 1-Figure 4As shown, as a preferred embodiment of the present invention, the protective box 102 is also provided with a sealing mechanism 1 4 and a sealing mechanism 2 5. The sealing mechanism 1 4 seals the air inlet 103 by moving the vertical moving rod 110 upward, and the sealing mechanism 2 5 seals the air outlet 104 by discharging liquid carbon dioxide through the liquid carbon dioxide storage tank 105.

[0037] In the embodiment of the present invention, when the high temperature trigger component 3 detects that the dry-type transformer body 101 is on fire, the sealing mechanism 14 seals the air inlet 103 by moving the vertical moving rod 110 upward, so that the air inlet 103 at the bottom of the protective box 102 is closed first, and then carbon dioxide begins to be filled into the protective box 102. Because the density of carbon dioxide is greater than that of air, the air in the protective box 102 will gradually be discharged from the exhaust port 104, and then the air in the protective box 102 will be completely discharged, and the protective box 102 will be filled with carbon dioxide. Subsequently, the sealing mechanism 2 5 seals the exhaust port 104 by discharging liquid carbon dioxide through the liquid carbon dioxide storage tank 105, so that the protective box 102 is in a sealed state, and then the closing of the air inlet 103 and the exhaust port 104 is in sequence and time difference, which is convenient for the discharge of air in the protective box 102.

[0038] like Figure 1-Figure 9 As shown, as a preferred embodiment of the present invention, the sealing mechanism 4 includes a plurality of rotating shafts 401 rotatably connected in the air inlet 103, and a sealing flap 402 is fixed on each of the plurality of rotating shafts 401. A transmission assembly 1 is arranged in the bottom side wall of the protection box 102, and the transmission assembly 1 drives the plurality of rotating shafts 401 to rotate synchronously by moving the vertical moving rod 110 up and down;

[0039] The transmission component 1 includes an installation groove 1403 and a horizontal slide groove 405 arranged in the bottom side wall of the protective box 102, the installation groove 1403 and the horizontal slide groove 405 are connected, one end of the plurality of rotating shafts 1401 is fixed with a gear 1404, and the plurality of gears 1404 are arranged in the installation groove 1403, a sliding rack 406 is slidably connected in the horizontal slide groove 405, and the sliding rack 406 is meshed with the plurality of gears 1404 at the same time, a spring 3 407 is arranged in the horizontal slide groove 405, and a rope 408 is connected to one end of the sliding rack 406 close to the spring 3 407, and a connecting rod 409 is fixed on the vertical moving rod 110, and the end of the rope 408 extends into the protective box 102 and is connected to the connecting rod 409.

[0040] In the embodiment of the present invention, in the initial state, the spring three 407 is in an extended state and pushes the sliding rack 406, and the sealing flap 402 is in a vertical state; the vertical moving rod 110 moving upward pulls one end of the rope 408 through the connecting rod 409, and the other end of the rope 408 overcomes the elastic force of the spring three 407 and pulls the sliding rack 406 to move, and the sliding rack 406 drives the multiple gears 404 to rotate synchronously, and the multiple gears 404 drive the multiple rotating shafts 401 to rotate synchronously, and the multiple rotating shafts 401 drive the multiple sealing flaps 402 to rotate synchronously, so that the multiple sealing flaps 402 close the air inlet 103.

[0041] like Figure 1-Figure 11 As shown, as a preferred embodiment of the present invention, the sealing mechanism 2 5 includes a plurality of rotating shafts 2 501 rotatably connected in the air inlet 103, and a sealing flap 2 502 is fixed on each of the plurality of rotating shafts 2 501; two guide shafts 2 503 are fixed on the inner side wall of the protection box 102, and a sliding block 504 is slidably connected to the two guide shafts 2 503, and a spring 4 505 is connected to the lower end of the sliding block 504, and the lower end of the spring 4 505 is connected to the inner side wall of the protection box 102, and the liquid carbon dioxide storage tank 105 is installed on the sliding block 504; it also includes a transmission component 2 arranged on the side wall of the protection box 102, and the transmission component 2 drives the plurality of rotating shafts 2 501 to rotate synchronously by discharging liquid carbon dioxide from the liquid carbon dioxide storage tank 105;

[0042] The transmission component 2 includes a vertical sliding groove 506 arranged on the inner wall of the protective box 102, and a vertical sliding rod 507 is slidably connected in the vertical sliding groove 506, and the vertical sliding rod 507 is connected to the sliding block 504. An installation groove 2 508 is arranged in the side wall of the protective box 102, and a gear 2 509 is fixed at one end of each of the plurality of rotating shafts 2 501, and each of the plurality of gears 2 509 is arranged in the installation groove 2 508, and the installation groove 2 508 is connected to the vertical sliding groove 506. A vertical rack 510 is embedded on the side of the sliding block 504 close to the gear 2 509, and the vertical rack 510 is meshed with the plurality of gears 2 509.

[0043] In the embodiment of the present invention, in the initial state, the liquid carbon dioxide storage tank 105 compresses the spring four 505 by its own weight, and the sealing flap two 502 is tilted; the liquid carbon dioxide storage tank 105 discharges liquid carbon dioxide, its own weight decreases, the compression force of the spring four 505 decreases, the spring four 505 begins to extend, and the spring four 505 pushes the sliding block 504 and the liquid carbon dioxide storage tank 105 upward to move, the sliding block 504 drives the vertical sliding bar 507 to move upward, the vertical sliding bar 507 drives the vertical rack 510 to move upward, the upward moving vertical rack 510 drives multiple gears two 509 to rotate, the multiple gears two 509 drive multiple rotating shafts two 501 to rotate, and the multiple rotating shafts two 501 drive multiple sealing flaps two 502 to rotate, thereby causing the multiple sealing flaps two 502 to close the exhaust port 104.

[0044] The above embodiment of the present invention provides a self-fireproof dry-type transformer. When the dry-type transformer body 101 spontaneously ignites and catches fire, the organic solution expands when encountering high temperature, and then bursts the glass tube 308. At this time, the stop pin 305 loses its supporting force, and the spring 2 307 pulls the stop pin 305 to move. The stop pin 305 is separated from the stop socket 306, and the mounting plate 303 loses the restriction of movement. The spring 1 302 pulls the mounting plate 303 upward, and the mounting plate 303 drives the vertical moving rod 110 to move upward. The vertical moving rod 110 that moves upward drives the piston block 202 to move upward. When the piston block 202 moves upward until the two ends of the through hole 203 coincide with the connecting hose 106 and the exhaust pipe 108, the through hole 203 connects the connecting hose 106 and The exhaust pipe 108 is connected. At this time, the liquid carbon dioxide in the liquid carbon dioxide storage tank 105 is discharged through the connecting hose 106, the connecting shell 107, the exhaust pipe 108 and the exhaust port 109. The vertical moving rod 110 moving upward pulls one end of the rope 408 through the connecting rod 409. The other end of the rope 408 overcomes the elastic force of the spring three 407 and pulls the sliding rack 406 to move. The sliding rack 406 drives the multiple gears 404 to rotate synchronously, and the multiple gears 404 drive the multiple rotating shafts 401 to rotate synchronously. The multiple rotating shafts 401 drive the multiple sealing flaps 402 to rotate synchronously, so that the multiple sealing flaps 402 close the air inlet 103, so that the air inlet 103 at the bottom of the protective box 102 is first When closed, carbon dioxide begins to fill the protective box 102. Because the density of carbon dioxide is greater than that of air, the air in the protective box 102 will gradually be discharged from the exhaust port 104, and the air in the protective box 102 will be completely discharged. The protective box 102 is filled with carbon dioxide. Subsequently, the liquid carbon dioxide storage tank 105 discharges the liquid carbon dioxide, and its own weight decreases. The compression force of the spring four 505 decreases, and the spring four 505 begins to extend. The spring four 505 pushes the sliding block 504 and the liquid carbon dioxide storage tank 105 upward to move. The sliding block 504 drives the vertical sliding rod 507 to move upward, and the vertical sliding rod 507 drives the vertical rack 510 to move upward. The vertical rack 510 moving upward drives multiple gears 509 to rotate. The gear 2 509 drives the multiple rotating shafts 2 501 to rotate, and the multiple rotating shafts 2 501 drive the multiple sealing flaps 2 502 to rotate, so that the multiple sealing flaps 2 502 close the exhaust port 104, so that the protection box 102 is in a sealed state, and the closing of the air inlet 103 and the exhaust port 104 has a sequence and time difference, which is convenient for the discharge of air in the protection box 102, and the carbon dioxide gas fills the protection box 102 and wraps the dry-type transformer body 101, so that the dry-type transformer body 101 is isolated from oxygen, thereby playing a fire extinguishing function. Compared with the existing sand burial and mixed solution fire extinguishing methods, the carbon dioxide isolation oxygen fire extinguishing method will not increase the damage to the dry-type transformer body 101.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-fireproof dry-type transformer, comprising a dry-type transformer body (101) and a protective box (102), wherein the dry-type transformer body (101) is installed in the protective box (102), characterized in that: Also includes: An opening and closing door rotatably connected to the front side wall of the protection box body (102); The bottom of the protection box (102) is provided with an air inlet (103), the side wall of the protection box (102) is provided with an air outlet (104), the inner wall of the protection box (102) is provided with a liquid carbon dioxide storage tank (105), the open end of the liquid carbon dioxide storage tank (105) is connected to a connecting hose (106), and the end of the connecting hose (106) is connected to the side wall of the connecting shell (107); The communication shell (107) is fixed to the bottom of the protection box (102); an exhaust pipe (108) is arranged in the protection box (102); the exhaust pipe (108) is arranged at the lower end of the dry-type transformer body (101); a plurality of exhaust ports (109) are arranged on the exhaust pipe (108); and the end of the exhaust pipe (108) is arranged on the side wall of the communication shell (107); A vertical moving rod (110) is movably provided at the upper end of the connecting shell (107), a connecting component (2) is provided in the connecting shell (107), a high temperature trigger component (3) is provided in the protective box (102), the high temperature trigger component (3) is located at the upper end of the dry-type transformer body (101), the high temperature trigger component (3) drives the vertical moving rod (110) to move upwards through the high temperature generated by the combustion of the dry-type transformer body (101), and the connecting component (2) connects the connecting hose (106) with the exhaust pipe (108) by the upward movement of the vertical moving rod (110).

2. The self-fireproof dry-type transformer according to claim 1, characterized in that: The high temperature trigger component (3) comprises two guide shafts (301) fixed at the top of the protection box (102), the two guide shafts (301) are slidably connected with a mounting plate (303), a spring (302) and a fixing sleeve (304) are fixed at the top of the protection box (102), the end of the spring (302) is connected to the mounting plate (303), and the fixing sleeve (304) passes through the mounting plate (303); A stop pin (305) is slidably connected to the side wall of the fixing sleeve (304); one end of the stop pin (305) extending into the fixing sleeve (304) is connected to a second spring (307) and a glass tube (308); the ends of the second spring (307) and the glass tube (308) are both connected to the inner wall of the fixing sleeve (304); a stop socket (306) matching the stop pin (305) is provided on the mounting plate (303); and the glass tube (308) is filled with an organic solution.

3. The self-fireproof dry-type transformer according to claim 1, characterized in that: The connecting component (2) comprises a vertical connecting groove (201) arranged in a connecting shell (107), a piston block (202) being slidably connected in the vertical connecting groove (201), the vertical moving rod (110) being fixed to the upper end of the piston block (202), a through hole (203) being penetrated through the side wall of the piston block (202), two sealing rings (204) being arranged on the side wall of the piston block (202), and the two sealing rings (204) being located at the upper end of the through hole (203), and the connecting hose (106) and the exhaust pipe (108) are both connected to the vertical connecting groove (201).

4. The self-fireproof dry-type transformer according to claim 1, characterized in that: The protective box (102) is also provided with a sealing mechanism 1 (4) and a sealing mechanism 2 (5), wherein the sealing mechanism 1 (4) seals the air inlet (103) by moving the vertical moving rod (110) upward, and the sealing mechanism 2 (5) seals the air outlet (104) by discharging liquid carbon dioxide from the liquid carbon dioxide storage tank (105).

5. The self-fireproof dry-type transformer according to claim 4, characterized in that: The sealing mechanism (4) comprises a plurality of rotating shafts (401) rotatably connected in the air inlet (103), a sealing flap (402) being fixed on each of the plurality of rotating shafts (401), a transmission assembly (402) being arranged in the bottom side wall of the protective box (102), and the transmission assembly (401) drives the plurality of rotating shafts (401) to rotate synchronously by moving the vertical moving rod (110) up and down.

6. The self-fireproof dry-type transformer according to claim 5, characterized in that: The transmission component 1 includes an installation groove 1 (403) and a horizontal slide groove (405) arranged in the bottom side wall of the protection box (102), the installation groove 1 (403) and the horizontal slide groove (405) are connected to each other, one end of each of the plurality of rotating shafts 1 (401) is fixed with a gear 1 (404), and each of the plurality of gears 1 (404) is arranged in the installation groove 1 (403), a sliding rack (406) is slidably connected in the horizontal slide groove (405), and the sliding rack (406) is meshed with the plurality of gears 1 (404) at the same time, a spring 3 (407) is arranged in the horizontal slide groove (405), and a rope (408) is connected to one end of the sliding rack (406) close to the spring 3 (407), and a connecting rod (409) is fixed on the vertical moving rod (110), and the end of the rope (408) extends into the protection box (102) and is connected to the connecting rod (409).

7. The self-fireproof dry-type transformer according to claim 4, characterized in that: The sealing mechanism 2 (5) comprises a plurality of rotating shafts 2 (501) rotatably connected in the air inlet (103), and a sealing flap 2 (502) is fixed on each of the plurality of rotating shafts 2 (501); Two guide shafts (503) are fixed on the inner wall of the protection box (102), and sliding blocks (504) are slidably connected to the two guide shafts (503). The lower ends of the sliding blocks (504) are connected to springs (505), and the lower ends of the springs (505) are connected to the inner wall of the protection box (102). The liquid carbon dioxide storage tank (105) is installed on the sliding blocks (504); It also includes a transmission assembly 2 arranged on the side wall of the protective box (102), and the transmission assembly 2 drives the multiple rotating shafts 2 (501) to rotate synchronously by discharging liquid carbon dioxide through the liquid carbon dioxide storage tank (105).

8. The self-fireproof dry-type transformer according to claim 7, characterized in that: The transmission component 2 includes a vertical sliding groove (506) arranged on the inner wall of the protective box (102), a vertical sliding rod (507) slidably connected in the vertical sliding groove (506), and the vertical sliding rod (507) is connected to the sliding block (504). A mounting groove 2 (508) is arranged in the side wall of the protective box (102), and a gear 2 (509) is fixed at one end of each of the plurality of rotating shafts 2 (501), and each of the plurality of gears 2 (509) is arranged in the mounting groove 2 (508), and the mounting groove 2 (508) is connected to the vertical sliding groove (506), and a vertical rack (510) is embedded on the side of the sliding block (504) close to the gear 2 (509), and the vertical rack (510) is meshed with the plurality of gears 2 (509).

Images