A ventilation fire-fighting device under chimney effect

Abstract

The present invention provides a ventilation fire-fighting device under the chimney effect, which belongs to the field of fire protection technology of substations, including a transformer room, a buffer chamber and an exhaust channel provided in the top plate, a connecting sleeve provided on the lower end surface of the top plate, the connecting sleeve forming the chimney channel, an air intake channel opened on the lower side of the transformer room, a blocking plate provided on the inner wall of the transformer room, one end of the blocking plate rotatably provided on the lower side of the air intake channel, a flip plate provided below the top plate, a first end of the flip plate connected to the outside of the connecting sleeve by a hot melt adhesive layer, a counterweight block provided above the first end of the flip plate, the upper end of the counterweight block connected to a connecting rod, the connecting rod slidingly passed through the buffer chamber and connected to the blocking block, the blocking block being located at the top of the buffer chamber and directly above the chimney channel, the second end of the flip plate connected to the blocking plate by a flexible stranded wire. The ventilation fire-fighting device under the chimney effect provided by the present invention can take into account the problems of ventilation and heat dissipation in the transformer room and fire fighting.

Description

Technical Field

[0001] The present invention belongs to the technical field of transformer substation fire protection, and more particularly, relates to a ventilation fire protection device under the chimney effect. Background Art

[0002] In recent years, with the increase in electricity load, the number of substations located in urban areas has also increased. However, due to the high noise of the main transformers, surrounding residents have become repelled by substations. As a result, more and more main transformers are being installed indoors. To reduce energy consumption in substations, we use natural ventilation to a greater extent. However, in the summer, as the transformer load increases, the temperature inside the transformer room will continue to rise, greatly increasing the risk of transformer fire. Natural ventilation can also increase the spread of fire. Therefore, the research on ventilation and fire protection devices under the chimney effect is of great significance.

[0003] In order to better achieve good ventilation and heat dissipation effects in the transformer room and to reduce the spread of fire and extinguish the fire in time, it is very necessary to design a ventilation fire-fighting device under the chimney effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a ventilation and fire-fighting device under the chimney effect, aiming to solve the current problems of ventilation, heat dissipation and fire protection in transformer rooms.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a ventilation fire-fighting device under the chimney effect, comprising a transformer chamber, a buffer chamber is provided in the top plate of the transformer chamber, an exhaust passage connected to the buffer chamber is opened in the top plate, a connecting sleeve is longitudinally provided on the lower end surface of the top plate, the connecting sleeve forms a chimney passage connecting the inner cavity of the transformer chamber and the buffer chamber, an air intake passage is opened on the lower side of the transformer chamber, a blocking plate is provided on the inner wall of the transformer chamber, one end of the blocking plate is rotatably arranged on the lower side of the air intake passage, a flip plate rotatably connected in the middle is provided below the top plate, a first end of the flip plate is connected to the outer side of the connecting sleeve by a hot melt adhesive layer, a counterweight block is provided above the first end of the flip plate, the upper end of the counterweight block is connected to a connecting rod, the connecting rod is slidably passed through the buffer chamber and connected to the blocking block, the blocking block is located at the top of the buffer chamber and directly above the chimney passage, and the second end of the flip plate is connected to the blocking plate by a flexible stranded wire.

[0006] In one possible implementation, the buffer chamber is opened in the middle of the top plate, the number of the exhaust channels is multiple, and the multiple exhaust channels are opened in the circumference of the buffer chamber, the number of the air intake channels is multiple, and the multiple air intake channels are opened in the circumference of the lower side of the transformer chamber, the number of the flip plates is multiple, and the multiple flip plates are circumferentially arranged in the circumference of the connecting sleeve and are arranged one-to-one with the multiple air intake channels, and the counterweight block is a counterweight ring, which is sleeved on the outer circumference of the connecting sleeve and connected to the blocking block through multiple connecting rods.

[0007] In one possible implementation, an annular groove is provided on the lower side of the outer wall of the connecting sleeve, and a plurality of notches are provided at intervals from top to bottom at the first end of the flip plate. The hot melt adhesive layer is an annular hot melt adhesive ring, and the inner side of the annular hot melt adhesive ring is embedded in the annular groove, and the outer side of the annular hot melt adhesive ring is embedded in the plurality of notches.

[0008] In one possible implementation, a accommodating chamber is provided in the top plate, the accommodating chamber is located below the exhaust passage and close to the side of the second end of the flip plate, a fire extinguishing medium storage container is provided in the accommodating chamber, a connecting port for the flip plate to rotate into the accommodating chamber is provided at the bottom of the accommodating chamber, and a sharp portion for scratching the fire extinguishing medium storage container is provided on the upper end surface of the second end of the flip plate.

[0009] In one possible implementation, the sharp portion includes a plurality of blades arranged in a rectangular array, the number of the blades arranged along the width direction of the flip plate is greater than the number arranged along the length direction of the flip plate, and the distance between the blades arranged along the width direction of the flip plate is greater than the distance between the blades arranged along the length direction of the flip plate.

[0010] In one possible implementation, the accommodating chamber is a transversely opened elongated chamber, one outer end of the elongated chamber is connected to the outside and a sealed end cover is detachably installed thereon, the communicating port is opened in the middle of the elongated chamber on one side close to the sealed end cover, the width of the communicating port is less than 1 / 4 of the length of the elongated chamber, the length of the fire extinguishing medium storage container is not less than 3 / 4 of the elongated chamber, and the two ends of the fire extinguishing medium storage container are respectively overlapped on both sides of the communicating port.

[0011] In one possible implementation, a wiring channel is longitudinally opened on the side wall of the transformer chamber, the upper end of the wiring channel is connected to an upper connecting groove, and the lower end of the wiring channel is connected to a lower connecting groove, the upper connecting groove and the lower connecting groove are respectively connected to the inner cavity of the transformer chamber, the second end of the flip plate is located in the upper connecting groove, the flexible stranded wire passes through the wiring channel, the upper end of the flexible stranded wire is connected to the second end of the flip plate, and the lower end of the flexible stranded wire is connected to the other end of the blocking plate.

[0012] In one possible implementation, a first guide wheel is provided at the bottom of the upper connecting groove, and the first guide wheel is located on the side of the wiring channel close to the transformer chamber. A second guide wheel is provided at the top of the lower connecting groove, and the second guide wheel is located on the side of the wiring channel close to the transformer chamber. The upper end of the flexible stranded wire passing through the wiring channel is overlapped on the first guide wheel, and the lower end of the flexible stranded wire passing through the wiring channel is overlapped on the second guide wheel.

[0013] In a possible implementation, a relief opening is provided at the top of the upper connecting groove, the relief opening connects the accommodating chamber and the connecting opening, and the width of the relief opening is greater than the width of the second end of the flip plate.

[0014] In one possible implementation, a sealing boss is provided at the lower end of the sealing block, a sealing groove connected to the chimney channel is opened at the bottom of the buffer chamber, a fireproof asbestos ring is provided at the bottom of the sealing groove, the sealing boss is relatively adapted to the sealing groove, the bottom contour of the sealing boss is smaller than the bottom contour of the sealing groove, and the bottom contour of the sealing boss is larger than the upper port contour of the chimney channel.

[0015] The chimney-effect ventilation fire-fighting device provided by the present invention has the following advantages: compared with the prior art, a transformer is placed in the middle of the inner cavity of a transformer chamber, an air intake channel is provided on the lower side of the transformer chamber, and an exhaust channel is provided in the top plate of the transformer chamber. In addition, a buffer chamber is provided in the top plate of the transformer chamber, and a connecting sleeve is connected to the lower end of the top plate, with a longitudinal chimney channel formed inside the connecting sleeve. The air intake channel communicates with the outside world and the inner cavity of the transformer chamber; the exhaust channel communicates with the outside world and, in sequence, with the inner cavity of the transformer chamber through the buffer chamber and the chimney channel. When the transformer is in operation, the temperature of the air in the inner cavity of the transformer chamber increases, causing the high-temperature gas to rise and be discharged through the chimney channel, the buffer chamber, and the exhaust channel in sequence. At the same time, as the high-temperature gas in the transformer chamber is continuously discharged, a negative pressure is formed in the inner cavity of the transformer chamber, and external gas continuously enters the inner cavity of the transformer chamber through the air intake channel, thereby forming air convection in the transformer chamber, continuously discharging the high-temperature gas in the transformer chamber and continuously replenishing the ambient temperature gas from the outside, thereby achieving the purpose of ventilating and cooling the transformer. When a fire occurs in the transformer, the flame generated by the transformer will bake the lower end of the connecting sleeve, and the hot melt adhesive layer will melt due to the high temperature. The first end of the flip plate will flip downward under the gravity of the counterweight block, and the counterweight block will drive the blocking block in the buffer chamber to move downward through the connecting rod, blocking the upper port of the chimney channel. At the same time, the second end of the flip plate flips upward, and the flexible stranded wire pulls the blocking plate upward, so that the blocking plate flips upward and blocks the inner port of the air intake channel. By blocking the air intake channel and the exhaust channel that connect the inner cavity of the transformer chamber to the outside world, the inner cavity of the transformer chamber is placed in a closed state, blocking the air required for combustion and thus achieving the effect of extinguishing the fire. The ventilation and fire fighting device under the chimney effect provided by the present invention can take into account the problems of ventilation and heat dissipation in the transformer chamber as well as fire fighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0017] Figure 1 A schematic structural diagram of a chimney-effect ventilation fire-fighting device in a ventilation state provided by an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0019] Figure 3 A schematic structural diagram of a chimney-effect ventilation fire-fighting device in a fire-fighting state provided by an embodiment of the present invention;

[0020] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0021] Figure 5 for Figure 3 A partial enlarged view of point C in the middle;

[0022] Figure 6 A top view of the flip plate provided in an embodiment of the present invention.

[0023] Description of reference numerals:

[0024] 1. Transformer chamber; 2. Buffer chamber; 3. Exhaust duct; 4. Connecting sleeve; 5. Chimney duct; 6. Air inlet duct; 7. Sealing plate; 8. Top plate; 9. Flip plate; 10. Counterweight; 11. Connecting rod; 12. Sealing block; 13. Flexible stranded wire; 14. Notch; 15. Accommodating chamber; 16. Fire extinguishing medium storage container; 17. Connecting port; 18. Blade; 19. Sealing end cap; 20. Wiring channel; 21. Upper connecting groove; 22. Lower connecting groove; 23. First guide wheel; 24. Second guide wheel; 25. Avoidance; 26. Sealing boss; 27. Sealing groove; 28. Fireproof asbestos ring; 29. Hot melt adhesive layer. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to 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.

[0026] See also Figures 1 to 6 The ventilation and fire fighting device under the chimney effect provided by the present invention is now described. A ventilation and fire fighting device under the chimney effect includes a transformer chamber 1, a buffer chamber 2 is provided in the top plate 8 of the transformer chamber 1, an exhaust passage 3 connected to the buffer chamber 2 is opened in the top plate 8, a connecting sleeve 4 is longitudinally provided on the lower end surface of the top plate 8, and the connecting sleeve 4 forms a chimney passage 5 connecting the inner cavity of the transformer chamber 1 and the buffer chamber 2, an air inlet passage 6 is opened on the lower side of the transformer chamber 1, and a blocking plate 7 is provided on the inner wall of the transformer chamber 1, and one end of the blocking plate 7 is rotatably arranged on the lower side of the air inlet passage 6. A flip plate 9 with a middle rotation connection is provided below the top plate 8. The first end of the flip plate 9 is connected to the outside of the connecting sleeve 4 through a hot melt adhesive layer 29. A counterweight block 10 is provided above the first end of the flip plate 9. The upper end of the counterweight block 10 is connected to a connecting rod 11. The connecting rod 11 slides through the buffer chamber 2 and is connected to a blocking block 12. The blocking block 12 is located at the top of the buffer chamber 2 and directly above the chimney channel 5. The second end of the flip plate 9 is connected to the blocking plate 7 through a flexible stranded wire 13.

[0027] The present invention provides a chimney-effect ventilation and firefighting device. Compared to the prior art, a transformer is placed in the center of the inner cavity of a transformer chamber 1. An air intake duct 6 is provided on the lower side of the transformer chamber 1, and an exhaust duct 3 is provided within a top plate 8 at the top of the transformer chamber 1. Furthermore, a buffer chamber 2 is provided within the top plate 8 of the transformer chamber 1. A connecting sleeve 4 is connected to the lower end of the top plate 8, and a longitudinal chimney duct 5 is formed within the connecting sleeve 4. The air intake duct 6 communicates with the outside world and with the inner cavity of the transformer chamber 1. The exhaust duct 3 communicates with the outside world and, in turn, with the inner cavity of the transformer chamber 1 through the buffer chamber 2 and the chimney duct 5. During operation, the transformer's temperature rises, causing the air temperature within the transformer chamber 1 to rise. High-temperature gases rise and are discharged sequentially through the chimney passage 5, the buffer chamber 2, and the exhaust passage 3. Simultaneously, as the high-temperature gases within the transformer chamber 1 are continuously discharged, a negative pressure forms within the transformer chamber 1, and external gas continuously enters the transformer chamber 1 through the air inlet passage 6, thereby forming air convection within the transformer chamber 1, continuously discharging the high-temperature gases within the transformer chamber 1 and continuously replenishing the external, ambient-temperature gases, thereby achieving the purpose of ventilating and cooling the transformer. In the event of a transformer fire, the flames generated by the transformer will burn the lower end of the connecting sleeve 4, causing the hot-melt adhesive layer 29 to melt due to the high temperature. The first end of the flip plate 9 flips downward under the weight of the counterweight 10, which drives the blocking block 12 within the buffer chamber 2 downward via the connecting rod 11, blocking the upper end of the chimney passage 5. Simultaneously, the second end of the flip plate 9 flips upward, and the flexible stranded wire 13 pulls the blocking plate 7 upward, causing it to flip upward and block the inner end of the air inlet passage 6. By blocking the air inlet passage 6 and the exhaust passage 3 connecting the interior of the transformer chamber 1 to the outside world, the interior of the transformer chamber 1 is sealed, blocking the air required for combustion and thus achieving the fire extinguishing effect. The chimney-effect ventilation firefighting device provided by the present invention can simultaneously address ventilation and heat dissipation within the transformer chamber 1 and firefighting.

[0028] A closable door is provided on one side of the transformer room 1, which forms a fireproof sealing ring around the door. When the door is in the closed state, the transformer room 1 is connected to the outside world only through the air intake channel 6 and the exhaust channel 3. Other areas are sealed to ensure the consistency of gas flow in the transformer room 1 and the fire protection requirements.

[0029] In some embodiments, see Figure 1 and Figure 3The buffer chamber 2 is opened in the middle of the top plate 8, the number of exhaust channels 3 is multiple, and the multiple exhaust channels 3 are opened in the circumference of the buffer chamber 2, the number of air intake channels 6 is multiple, and the multiple air intake channels 6 are opened in the circumference of the lower side of the transformer chamber 1, the number of flip plates 9 is multiple, and the multiple flip plates 9 are circumferentially arranged in the circumference of the connecting sleeve 4 and are arranged one-to-one with the multiple air intake channels 6, the counterweight block 10 is a counterweight ring, the counterweight ring is sleeved on the outer periphery of the connecting sleeve 4 and is connected to the blocking block 12 through multiple connecting rods 11.

[0030] Specifically, when the transformer chamber 1 is in the ventilation state, the blocking block 12 is located at the top of the buffer chamber 2, the upper end surface of the blocking block 12 is in contact with the top surface of the buffer chamber 2, and the lower end surface of the blocking block 12 and the bottom surface of the buffer chamber 2 have a flow gap. Multiple air inlet channels 6 are horizontally opened on the upper part of the circumferential side wall of the buffer chamber 2, thereby forming a stepped channel. When the transformer chamber 1 is in the fire protection state, the blocking block 12 falls to block the above-mentioned flow gap and blocks the upper end of the chimney channel 5. There are also multiple flip plates 9, which are arranged around the outer periphery of the connecting sleeve 4. There are also multiple air inlet channels 6, and the number corresponds one-to-one to the number of multiple flip plates 9. At this time, the counterweight block 10 adopts a counterweight ring structure, which is sleeved on the outer periphery of the connecting sleeve 4. The counterweight ring applies pressure to the first ends of the multiple flip plates 9 at the same time through its own weight, so that the multiple flip plates 9 can rotate at the same time, so as to simultaneously block the inner ends of the multiple air inlet channels 6 through the multiple blocking plates 7. The use of multiple air inlet channels 6 and multiple exhaust channels 3 can provide the transformer room 1 with a better ventilation effect, while also not affecting the fire-fighting capability of the transformer room 1 .

[0031] Please refer to Figure 2 and Figure 4 An annular groove is provided on the lower side of the outer wall of the connecting sleeve 4, and a plurality of notches 14 are provided at intervals from top to bottom at the first end of the flip plate 9. The hot melt adhesive layer 29 is an annular hot melt adhesive ring, the inner side of the annular hot melt adhesive ring is embedded in the annular groove, and the outer side of the annular hot melt adhesive ring is embedded in the plurality of notches 14.

[0032] Specifically, the inner side of the annular hot-melt adhesive ring is embedded in the annular groove, thereby stably surrounding the outer periphery of the connecting sleeve 4; the outer side of the annular hot-melt adhesive ring is embedded in multiple notches 14, thereby stably connecting multiple flip plates 9 to the outer periphery of the annular hot-melt adhesive ring. The annular hot-melt adhesive ring connects the connecting sleeve 4 and the flip plate 9 in a hot-melt state, and after reaching room temperature, the connecting sleeve 4 and the flip plate 9 are stably connected. In the event of a fire, under the high temperature of the flame, the annular hot-melt adhesive ring will reach a hot-melt state again, and the first end of the flip plate 9 will be separated from the connecting sleeve 4. Among them, the main component of the hot-melt adhesive layer 29 is ethylene and vinyl acetate copolymerized under high temperature and high pressure. It will reach a molten state when the temperature reaches 160°C-200°C. That is, when connected using the hot-melt adhesive layer 29, it can quickly reach a molten state when the flame begins to bake the hot-melt adhesive layer 29 in the early stage of a fire, and the flip plate 9 can be flipped.

[0033] In some embodiments, see Figure 1 and Figure 3 A accommodating chamber 15 is provided in the top plate 8. The accommodating chamber 15 is located below the exhaust passage 3 and close to the side of the second end of the flip plate 9. A fire extinguishing medium storage container 16 is provided in the accommodating chamber 15. A connecting port 17 for the flip plate 9 to rotate into the accommodating chamber 15 is provided at the bottom of the accommodating chamber 15. A sharp portion for scratching the fire extinguishing medium storage container 16 is provided on the upper end surface of the second end of the flip plate 9.

[0034] Specifically, a accommodating chamber 15 is located within the top plate 8, and a fire extinguishing medium storage container 16 containing the fire extinguishing medium is placed within the accommodating chamber 15. The accommodating chamber 15 is located below the exhaust duct 3 and above the second end of the flip plate 9. A connecting port 17 is provided at the bottom of the accommodating chamber 15. After the second end of the flip plate 9 is flipped, the second end can enter the accommodating chamber 15 through the connecting port 17. The sharp portion of the upper end surface of the second end of the flip plate 9 can scratch the fire extinguishing medium storage container 16. The fire extinguishing medium in the fire extinguishing medium storage container 16 will be poured onto the burning transformer along with the tilted flip plate 9, thereby extinguishing the transformer fire. The fire extinguishing medium stored in the fire extinguishing medium storage container 16 can be aerosol particles, such as a mixture of metal oxides, carbonates, or bicarbonates.

[0035] Please refer to Figure 6 The sharp portion includes a plurality of blades 18 arranged in a rectangular array, the number of the plurality of blades 18 arranged along the width direction of the flip plate 9 is greater than the number arranged along the length direction of the flip plate 9, and the distance between the plurality of blades 18 arranged along the width direction of the flip plate 9 is greater than the distance between the plurality of blades 18 arranged along the length direction of the flip plate 9.

[0036] Preferably, the sharp portion includes multiple blades 18 arranged in a matrix, with the number of blades 18 arranged along the width of the flip plate 9 being greater than the number arranged along its length. This allows multiple openings to be cut across the width of the fire extinguishing medium storage container 16 when the second end of the flip plate 9 contacts the fire extinguishing medium storage container 16, allowing the fire extinguishing medium in the fire extinguishing medium storage container 16 to be rapidly discharged. Because the contact area between the second end of the flip plate 9 and the fire extinguishing medium storage container 16 is limited, the number of blades 18 arranged along the length of the flip plate 9 does not need to be excessive. Even if more blades 18 were provided, the portion of the fire extinguishing medium storage container 16 that could be cut would not increase. The multiple blades 18 are arranged at a greater distance along the width of the flip plate 9 than along its length. This greater distance between the blades 18 in the width direction allows for uniform cutting of openings in the bottom of the fire extinguishing medium storage container 16. The openings should not be too densely spaced across the width. If they are too dense, the fire extinguishing medium ejected from adjacent openings may collide with each other, causing the overall trajectory to deviate, preventing the fire extinguishing medium from being fully concentrated on the transformer and effectively extinguishing the fire. The distance between the blades 18 in the length direction is small. For the same reason, the plurality of blades 18 can be concentrated in the contact area with the fire extinguishing medium storage container 16 in the length direction to avoid the occurrence of idle and inactive blades 18.

[0037] In some embodiments, see Figure 1 and Figure 3 The accommodating chamber 15 is a transversely opened elongated chamber, one end of the outer side of the elongated chamber is connected to the outside and is detachably installed with a sealed end cover 19. The communication port 17 is opened in the middle of the elongated chamber, close to the sealing end cover 19. The width of the communication port 17 is less than 1 / 4 of the length of the elongated chamber. The length of the fire extinguishing medium storage container 16 is not less than 3 / 4 of the elongated chamber, and the two ends of the fire extinguishing medium storage container 16 are respectively overlapped on both sides of the communication port 17.

[0038] Specifically, the accommodating chamber 15 is a long, horizontally extending chamber with one outer end connected to the outside. A sealing end cap 19 is mounted on the outer end of the elongated chamber. The sealing end cap 19 is removably connected to the outer end via threads or a plug-in connection. When the fire extinguishing medium storage container 16 within the accommodating chamber 15 needs to be replaced or repaired, the sealing end cap 19 can be opened. Once the replacement or repair is complete, the sealing end cap 19 is closed.

[0039] The fire extinguishing medium storage container 16 is also a long rectangular container, the width of the connection is less than 1 / 4 of the length of the long rectangular chamber, and the length of the fire extinguishing medium storage container 16 is not less than 3 / 4 of the long rectangular chamber. The two ends of the long rectangular container are respectively overlapped on both sides of the connecting port 17 to ensure the stability of the fire extinguishing medium storage container 16 in the accommodating chamber 15.

[0040] In some embodiments, see Figure 1 and Figure 3 A wiring channel 20 is longitudinally opened on the side wall of the transformer chamber 1. The upper end of the wiring channel 20 is connected to an upper connecting groove 21, and the lower end of the wiring channel 20 is connected to a lower connecting groove 22. The upper connecting groove 21 and the lower connecting groove 22 are respectively connected to the inner cavity of the transformer chamber 1. The second end of the flip plate 9 is located in the upper connecting groove 21. The flexible stranded wire 13 runs through the wiring channel 20. The upper end of the flexible stranded wire 13 is connected to the second end of the flip plate 9, and the lower end of the flexible stranded wire 13 is connected to the other end of the blocking plate 7.

[0041] Specifically, the wiring channel 20 is longitudinally opened on the inner wall of the transformer chamber 1. An upper connecting groove 21 is opened at the upper end of the wiring channel 20, and a lower connecting groove 22 is opened at the lower end of the wiring channel 20. The inner sides of the upper connecting groove 21 and the lower connecting groove 22 are both connected to the inner cavity of the transformer chamber 1, so that the upper end of the flexible stranded wire 13 passing through the wiring channel 20 passes through the upper connecting groove 21 and is connected to the second end of the flip plate 9, and the lower end of the flexible stranded wire 13 passing through the wiring channel 20 passes through the lower connecting groove 22 and is connected to the blocking plate 7. The second end of the flip plate 9 is located in the upper connecting groove 21, and the upper connecting groove 21 can provide sufficient clearance space for the second end of the flip plate 9. The wiring channel 20 can hide most of the flexible stranded wire 13. The flexible stranded wire 13 is made of multiple metal wires twisted together, has high tensile strength and high flexibility, can withstand high temperatures, and will not break in the event of a fire.

[0042] Preferably, a first guide wheel 23 is provided at the bottom of the upper connecting groove 21, and the first guide wheel 23 is located on the side of the wiring channel 20 close to the transformer chamber 1. A second guide wheel 24 is provided at the top of the lower connecting groove 22, and the second guide wheel 24 is located on the side of the wiring channel 20 close to the transformer chamber 1. The upper end of the flexible stranded wire 13 passing through the wiring channel 20 is overlapped on the first guide wheel 23, and the lower end of the flexible stranded wire 13 passing through the wiring channel 20 is overlapped on the second guide wheel 24. The flexible stranded wire 13 is guided by the first guide wheel 23 and the second guide wheel 24 to make it turn smoothly and avoid the right-angle area of the turn. At the same time, the supporting effect of the first guide wheel 23 and the second guide wheel 24 is utilized to prevent the flexible stranded wire 13 from touching the outer walls of the wiring channel 20, the upper connecting groove 21 and the lower connecting groove 22, thereby preventing friction and affecting its service life and safety performance.

[0043] Please refer to Figure 1A relief opening 25 is formed at the top of the upper communicating groove 21, connecting the accommodating chamber 15 and the communicating opening 17. The width of the relief opening 25 is greater than the width of the second end of the flip plate 9. The relief opening 25 is formed at the top of the upper communicating groove 21 so as not to disrupt the overall structure of the lower portion of the accommodating chamber 15, thereby ensuring the stability of the fire extinguishing medium storage container 16 within the accommodating chamber 15 and allowing the second end of the flip plate 9 to pass smoothly and enter the accommodating chamber 15.

[0044] Please refer to Figure 5 A sealing boss 26 is provided at the lower end of the sealing block 12, and a sealing groove 27 connected to the chimney channel 5 is opened at the bottom of the buffer chamber 2. A fireproof asbestos ring 28 is provided at the bottom of the sealing groove 27. The sealing boss 26 is relatively adapted to the sealing groove 27. The bottom contour of the sealing boss 26 is smaller than the bottom contour of the sealing groove 27, and the bottom contour of the sealing boss 26 is larger than the upper port contour of the chimney channel 5.

[0045] Specifically, the blocking boss 26 is integrally formed at the lower end of the blocking block 12, and the blocking groove 27 is provided at the bottom of the buffer chamber 2. The blocking boss 26 is a disc structure, and the blocking groove 27 is a circular groove, and the two are arranged relative to each other. In addition, the bottom contour of the blocking boss 26 is smaller than the bottom contour of the blocking groove 27, and the bottom contour of the blocking boss 26 is larger than the upper end contour of the chimney channel 5. When a fire occurs, the blocking block 12 is connected to the blocking boss 26 and falls downward, and the blocking boss 26 can be smoothly inserted into the blocking groove 27. The blocking boss 26 is pressed against the fireproof asbestos ring 28 at the bottom of the blocking groove 27. The fireproof asbestos ring 28 itself has fireproof properties. The blocking boss 26 will compact the fireproof asbestos ring 28, completely blocking the connection between the chimney channel 5 and the exhaust channel 3, thereby isolating the chimney channel 5 from the outside world and preventing air from entering the transformer chamber 1, thereby achieving a fire prevention effect.

[0046] 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 scope of protection of the present invention.

Claims

1. A ventilation fire-fighting device under chimney effect, characterized in that: The utility model comprises a transformer chamber, a buffer chamber is provided in the top plate of the transformer chamber, an exhaust passage communicating with the buffer chamber is provided in the top plate, a connecting sleeve is longitudinally provided on the lower end surface of the top plate, the connecting sleeve forms a chimney passage communicating with the inner cavity of the transformer chamber and the buffer chamber, an air intake passage is provided on the lower side of the transformer chamber, a sealing plate is provided on the inner wall of the transformer chamber, one end of the sealing plate is rotatably provided on the lower side of the air intake passage, a flip plate rotatably connected in the middle is provided below the top plate, a first end of the flip plate is connected to the outer side of the connecting sleeve by a hot melt adhesive layer, and a counterweight is provided above the first end of the flip plate The cam is connected to the air intake port of the chimney by means of a flexible cable, and the cam is connected to the air intake port of the chimney by means of a flexible cable. The chamber is located below the exhaust passage and close to one side of the second end of the flip plate. A fire extinguishing medium storage container is arranged in the accommodating chamber. A connecting port for the flip plate to rotate into the accommodating chamber is provided at the bottom of the accommodating chamber. The upper end surface of the second end of the flip plate is provided with a sharp portion for scratching the fire extinguishing medium storage container; a wiring channel is longitudinally provided on the side wall of the transformer chamber, the upper end of the wiring channel is connected to an upper connecting groove, and the lower end of the wiring channel is connected to a lower connecting groove, the upper connecting groove and the lower connecting groove are respectively connected to the inner cavity of the transformer chamber, and the second end of the flip plate is located at the upper In the connecting groove, the flexible stranded wire passes through the wiring channel, the upper end of the flexible stranded wire is connected to the second end of the flip plate, and the lower end of the flexible stranded wire is connected to the other end of the blocking plate; a first guide wheel is provided at the bottom of the upper connecting groove, and the first guide wheel is located on the side of the wiring channel close to the transformer chamber, and a second guide wheel is provided at the top of the lower connecting groove, and the second guide wheel is located on the side of the wiring channel close to the transformer chamber, the upper end of the flexible stranded wire passing through the wiring channel is overlapped on the first guide wheel, and the lower end of the flexible stranded wire passing through the wiring channel is overlapped on the second guide wheel.

2. A chimney effect ventilation fire fighting device according to claim 1, characterized in that: The buffer chamber is opened in the middle of the top plate, the number of the exhaust channels is multiple, and the multiple exhaust channels are opened in the circumference of the buffer chamber, the number of the air intake channels is multiple, and the multiple air intake channels are opened in the circumference of the lower side of the transformer chamber, the number of the flip plates is multiple, and the multiple flip plates are circumferentially arranged in the circumference of the connecting sleeve and are arranged one-to-one with the multiple air intake channels, the counterweight block is a counterweight ring, and the counterweight ring is sleeved on the outer circumference of the connecting sleeve and connected to the blocking block through multiple connecting rods.

3. A chimney effect ventilation fire fighting device according to claim 2, characterized in that: An annular groove is provided on the lower side of the outer wall of the connecting sleeve, and a plurality of notches are provided at intervals from top to bottom at the first end of the flip plate. The hot melt adhesive layer is an annular hot melt adhesive ring, and the inner side of the annular hot melt adhesive ring is embedded in the annular groove, and the outer side of the annular hot melt adhesive ring is embedded in the plurality of notches.

4. A chimney effect ventilation fire fighting device according to claim 1, characterized in that: The sharp portion includes a plurality of blades arranged in a rectangular array, the number of the blades arranged along the width direction of the flip plate is greater than the number arranged along the length direction of the flip plate, and the distance between the blades arranged along the width direction of the flip plate is greater than the distance between the blades arranged along the length direction of the flip plate.

5. The chimney effect ventilation fire fighting device according to claim 1, characterized in that: The accommodating chamber is a transversely opened elongated chamber, one outer end of the elongated chamber is connected to the outside and is detachably installed with a sealed end cover, the communicating port is opened in the middle of the elongated chamber on one side close to the sealed end cover, the width of the communicating port is less than 1 / 4 of the length of the elongated chamber, the length of the fire extinguishing medium storage container is not less than 3 / 4 of the elongated chamber, and the two ends of the fire extinguishing medium storage container are respectively overlapped on both sides of the communicating port.

6. The chimney effect ventilation fire fighting device according to claim 1, characterized in that: A relief opening is provided at the top of the upper communicating groove, the relief opening being in communication with the accommodating chamber and the communicating opening, and a width of the relief opening is greater than a width of the second end of the flip plate.

7. A chimney effect ventilation fire fighting device according to any one of claims 1 to 6, characterized in that: A sealing boss is provided at the lower end of the sealing block, a sealing groove connected to the chimney channel is provided at the bottom of the buffer chamber, a fireproof asbestos ring is provided at the bottom of the sealing groove, the sealing boss is relatively adapted to the sealing groove, the bottom contour of the sealing boss is smaller than the bottom contour of the sealing groove, and the bottom contour of the sealing boss is larger than the upper port contour of the chimney channel.

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