Buried underground garage fire extinguishing system

Abstract

The invention relates to the field of fire fighting and extinguishment, in particular to an underground garage fire fighting and extinguishment system which comprises a cover plate arranged on the surface of a parking space, an infrared temperature sensor embedded into the ground surface, a smoke sensor arranged on the wall face and a groove formed in the bottom of the surface of the parking space. The fire extinguishing mechanism comprises a first pipeline, the two ends of the first pipeline are connected with second pipelines through rotating shafts, one second pipeline is sleeved with a first turbine, the second pipelines are connected with third pipelines through first telescopic steel pipes, and one ends of the third pipelines are connected with cooling nozzles. A water curtain nozzle is connected to the rotating shaft at the other end, a second turbine is arranged at the end, provided with the water curtain nozzle, of the rotating shaft in a sleeving mode, a fourth pipeline is connected to one side of the second pipeline through a first connecting rod, and dry powder nozzles are arranged at the two ends of the fourth pipeline; according to the fire extinguishing system, the fire extinguishing effect is improved, and the loss caused by fire spreading is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fire fighting and fire extinguishing, and in particular to a buried fire fighting and fire extinguishing system for an underground garage. Background Art

[0002] The existing technology is unable to effectively extinguish fires in the battery area of electric vehicles. In the past, they were all gasoline vehicles, and the fire point was above, so the sprinkler on the garage roof would sense the fire and extinguish the fire in the first time. However, with the development of society, electric vehicles are becoming more and more popular, but at the same time, there is no practical and reliable fire extinguishing measure for fires caused by electric vehicles. Due to the closed space and limited ventilation of the basement, the fire can spread rapidly through flammable materials such as vehicle batteries and electrical lines in the early stage, forming three-dimensional combustion and triggering a chain reaction. The smoke concentration in the basement is high, the visibility is low, and the escape route is complex, which can easily cause people to be trapped. The basement usually parks a large number of vehicles and has a high value. Fires may cause chain damage. Moreover, the batteries of trams are all in the chassis, and the main body of the vehicle is above the chassis. According to the tram fire situation in recent years, the sprinkler cannot effectively extinguish the battery fire in the first time (the vehicle body blocks the fire and cannot extinguish the fire as quickly as possible). It can only control the fire and cannot effectively extinguish the fire. Therefore, it is an urgent problem to extinguish the fire and control the temperature at the fire point at a close distance in the first time. Summary of the Invention

[0003] The purpose of the present invention is to provide an underground fire extinguishing system for an underground garage to solve the problems raised in the above background technology.

[0004] The present invention is achieved through the following technical solutions:

[0005] A buried underground garage fire extinguishing system, comprising a cover plate provided on the surface of a parking space, an infrared temperature sensor embedded in the ground surface, a smoke sensor provided on the wall, and a groove provided below the surface of the parking space. A fire extinguishing mechanism is provided in the upper layer of the groove. The fire extinguishing mechanism comprises a first pipe, both ends of the first pipe are connected to a second pipe via a rotating shaft, one of the second pipes is provided with a first turbine, the second pipes are connected to a third pipe via a first telescopic steel pipe, one end of the third pipe is connected to a cooling nozzle, the other end is connected to a water curtain nozzle via a rotating shaft, and the end located at the water curtain nozzle is provided with a second turbine, one side of the second pipe is connected to a fourth pipe via a first connecting rod, and both ends of the fourth pipe are provided with a dry powder nozzle;

[0006] The first pipeline is connected to the water supply pipeline through a second telescopic steel pipe, and the fourth pipeline is connected to the dry powder pipeline through a metal bellows. Two third telescopic steel pipes are connected to the middle of the water supply pipeline and a first solenoid valve is provided at the connection point. One end of the third telescopic steel pipe is connected to the first turbine hydraulic supply pipe, and the first turbine hydraulic supply pipe is connected to the first pipeline through a second connecting rod. One end of the first turbine hydraulic supply pipe is connected to the fourth telescopic steel pipe and a second solenoid valve is provided at the connection point. One end of the fourth telescopic steel pipe is connected to the second turbine hydraulic supply pipe. A first pressure reducing device is provided inside one of the first turbine hydraulic supply pipes, and a second pressure reducing device is provided inside the second turbine hydraulic supply pipes.

[0007] As a preferred solution of the present invention, a interlayer is provided at the top of the groove, and first slide rails are provided on both sides of the top of the groove, one end of the first slide rail extends into the interior of the interlayer, and the first slide rail is slidably connected to the interior of the cover plate through a slider, a first gear is provided on one side of the cover plate, and a rotating motor is provided on one side of the interior of the interlayer, and the output end of the rotating motor is connected to the second gear through a bearing, and the first gear is engaged with the second gear.

[0008] As a preferred embodiment of the present invention, the first turbine is a semi-turbine structure, and the second turbine is a full-turbine structure.

[0009] As a preferred solution of the present invention, a support rod is provided on one side of the upper layer of the groove, one end of the support rod is connected to an electromagnetic spring, and one end of the electromagnetic spring is provided with a supporting seat.

[0010] As a preferred embodiment of the present invention, the telescopic length of the fourth telescopic steel tube is consistent with that of the first telescopic steel tube, and the telescopic length of the third telescopic steel tube is consistent with that of the second telescopic steel tube.

[0011] As a preferred solution of the present invention, first baffles are provided at the internal telescopic connections of the first telescopic steel tube, the second telescopic steel tube, the third telescopic steel tube, and the fourth telescopic steel tube.

[0012] As a preferred embodiment of the present invention, the first pressure reducing device includes a first spring and a first limit block, the first limit block is arranged on both sides of the first turbine hydraulic supply pipe, a third connecting rod is provided between the first limit blocks on both sides, the second connecting rod is connected to the first telescopic rod, the first telescopic rod is sleeved with a first spring, and one end of the first telescopic rod is connected to the second baffle.

[0013] As a preferred embodiment of the present invention, the second pressure reducing device includes a second spring and a second limit block. The second limit blocks are arranged on both sides of the second turbine hydraulic supply pipe. A fourth connecting rod is provided between the second limit blocks on both sides. The fourth connecting rod is connected to a second telescopic rod. The second telescopic rod is sleeved with a second spring. One end of the second telescopic rod is connected to a third baffle.

[0014] As a preferred solution of the present invention, an inverted throttling device is provided inside the third pipe, and the inverted throttling device includes an upper limit block, a lower limit block, and a lead block. The upper limit block is arranged on the upper part of the inner wall of the third pipe, and the lower limit block is arranged on the lower part of the inner wall of the third pipe. The lead block can move between the upper limit block and the lower limit block. A fixing mechanism is provided below the upper limit block, and the fixing mechanism includes a clamping block and a third spring. The clamping block is movable through the outer wall of the third pipe and is provided with a pull ring at one end. The middle section of the clamping block is provided with a third spring, and the other end of the clamping block is sloped.

[0015] As a preferred embodiment of the present invention, a drainage mechanism is provided at the lower layer of the groove, comprising an activated carbon plate and a drainage trough. The activated carbon plate is provided below the fire extinguishing mechanism, the drainage trough is provided at the bottom of the groove, a third stopper is provided at the top of the drainage trough, a drainage pipe is provided at one end of the drainage trough, a backwash overflow pipe is provided on the outer side of the upper layer of the groove, one end of the backwash overflow pipe is connected to the drainage pipe, a second slide rail is provided at the bottom of the groove, a baffle is provided on the second slide rail for sliding, a return spring is connected to one side of the baffle, and a backwash pipe is provided on the outer side of the bottom of the groove. Compared with the prior art, the present invention achieves the following beneficial effects:

[0016] The present invention provides a buried underground garage fire extinguishing system that, through hydraulic mechanical rotation, centralizes the fire extinguishing mechanism directly below the parking space, saving horizontal installation space while enabling rapid and accurate fire extinguishing. Furthermore, the system offers three-in-one functions: cooling, extinguishing, and controlling fire, maximizing fire extinguishing effectiveness and minimizing losses caused by fire spread. Furthermore, a drainage mechanism fully utilizes the fire pool for cleaning and discharge, conserving water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1This is an overall structural diagram of an underground garage fire extinguishing system provided by the present invention.

[0019] Figure 2 This is a structural schematic diagram of the fire extinguishing mechanism provided by the present invention before flipping.

[0020] Figure 3 This is a schematic diagram of the structure of the fire extinguishing mechanism provided by the present invention after flipping.

[0021] Figure 4 Schematic diagram of the cover opening structure provided by the present invention Figure 1 .

[0022] Figure 5 Schematic diagram of the cover opening structure provided by the present invention Figure 2 .

[0023] Figure 6 This is a working schematic diagram of the electromagnetic spring provided by the present invention.

[0024] Figure 7 This is a schematic diagram of the internal structure of the first telescopic steel tube provided by the present invention.

[0025] Figure 8 This is a schematic diagram of the structure and operation of the first pressure reducing device provided by the present invention.

[0026] Figure 9 This is a schematic diagram of the structure and operation of the second pressure reducing device provided by the present invention.

[0027] Figure 10 This is a schematic diagram of the structure and operation of the inverted throttling device provided by the present invention.

[0028] Figure 11 This is a schematic diagram of the drainage mechanism structure provided by the present invention.

[0029] 1 is the cover plate, 2 is the infrared temperature sensor, 3 is the smoke sensor, 4 is the groove, 5 is the first pipe, 6 is the second pipe, 7 is the first turbine, 8 is the first telescopic steel pipe, 9 is the third pipe, 10 is the cooling nozzle, 11 is the water curtain nozzle, 12 is the second turbine, 13 is the first connecting rod, 14 is the fourth pipe, 15 is the dry powder nozzle, 16 is the second telescopic steel pipe, 17 is the water supply pipe, 18 is the metal bellows, 19 is the dry powder pipe, 20 is the third telescopic steel pipe, 21 is the first solenoid valve, 22 is the first turbine hydraulic supply pipe, 23 is the second connecting rod, 24 is the fourth telescopic steel pipe, 25 is the second solenoid valve, 26 is the second turbine hydraulic supply pipe, 27 is the first pressure reducing device, 28 is the second pressure reducing device, 29 is the interlayer, 30 is the first slide rail, 31 is the slider , 32 is the first gear, 33 is the rotating motor, 34 is the second gear, 35 is the support rod, 36 is the electromagnetic spring, 37 is the supporting seat, 38 is the first baffle, 39 is the first spring, 40 is the first limit block, 41 is the third connecting rod, 42 is the first telescopic rod, 43 is the second baffle, 44 is the second spring, 45 is the second limit block, 46 is the fourth connecting rod, 47 is the second telescopic rod, 48 is the third baffle, 49 is the inverted throttling device, 50 is the upper limit block, 51 is the lower limit block, 52 is the lead block, 53 is the card block, 54 is the third spring, 55 is the pull ring, 56 is the activated carbon plate, 57 is the drainage trough, 58 is the third limit block, 59 is the drainage pipe, 60 is the backwash overflow pipe, 61 is the second slide rail, 62 is the baffle, 63 is the reset spring, and 64 is the backwash pipe. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more apparent, exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments of the present invention, and it should be understood that the present invention is not limited to the exemplary embodiments described herein. Based on the embodiments of the present invention described in the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0031] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0032] It should be understood that the present invention can be implemented in different forms and should not be interpreted as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to make disclosure thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0033] The purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention. When used herein, the singular forms "a", "an", and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0034] In order to fully understand the present invention, a detailed structure will be provided in the following description to illustrate the technical solution proposed by the present invention. Optional embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other implementations.

[0035] Example 1:

[0036] See also Figures 1 to 3 A buried underground garage fire extinguishing system includes a cover plate 1 provided on the surface of the parking space, an infrared temperature sensor 2 embedded in the ground surface (the infrared temperature sensor 2 embedded in the ground surface is provided with a mesh protective cover to ensure that the infrared temperature sensor 2 can sense the temperature change under the car and also protect the infrared temperature sensor 2), a smoke sensor 3 provided on the wall, and a groove 4 provided under the surface of the parking space. The upper layer of the groove 4 is provided with a fire extinguishing mechanism, and the fire extinguishing mechanism includes a first pipe 5, the Both ends of the first pipe 5 are connected to the second pipe 6 through a rotating shaft, one of the second pipes 6 is provided with a first turbine 7, and the second pipes 6 are connected to the third pipe 9 through a first telescopic steel pipe 8. One end of the third pipe 9 is connected to a cooling nozzle 10, and the other end of the rotating shaft is connected to a water curtain nozzle 11, and the end located at the water curtain nozzle 11 is provided with a second turbine 12. One side of the second pipe 6 is connected to the fourth pipe 14 through a first connecting rod 13, and both ends of the fourth pipe 14 are provided with a dry powder nozzle 15;

[0037] The first pipeline 5 is connected to the water supply pipeline 17 through the second telescopic steel pipe 16, and the fourth pipeline 14 is connected to the dry powder pipeline 19 through the metal bellows 18. Two third telescopic steel pipes 20 are connected to the middle of the water supply pipeline 17, and a first solenoid valve 21 is provided at the connection point. One end of the third telescopic steel pipe 20 is connected to the first turbine hydraulic supply pipe 22, and the first turbine hydraulic supply pipe 22 is connected to the first pipeline 5 through the second connecting rod 23. One end of the first turbine hydraulic supply pipe 22 is connected to the fourth telescopic steel pipe 24 and a second solenoid valve 25 is provided at the connection point. One end of the fourth telescopic steel pipe 24 is connected to the second turbine hydraulic supply pipe 26, and a first pressure reducing device 27 is provided inside the first turbine hydraulic supply pipe 22, and a second pressure reducing device 28 is provided inside the second turbine hydraulic supply pipe 26.

[0038] As a preferred embodiment of the present invention, see Figure 4 and Figure 5 A sandwich 29 is provided at the top of the groove 4, and first slide rails 30 are provided on both sides of the top of the groove 4. One end of the first slide rail 30 extends into the inside of the sandwich 29. The first slide rail 30 is slidably connected to the inside of the cover plate 1 through a slider 31. A first gear 32 is provided on one side of the cover plate 1, and a rotating motor 33 is provided on one side of the inside of the sandwich 29. The output end of the rotating motor 33 is connected to the second gear through a bearing, and the first gear 32 is meshed with the second gear.

[0039] As a preferred embodiment of the present invention, the first turbine 7 is a semi-turbine structure, and the second turbine 12 is a full-turbine structure.

[0040] As a preferred embodiment of the present invention, see Figure 6 A support rod is provided on the upper side of the groove 4, one end of the support rod is connected to an electromagnetic spring 36, and one end of the electromagnetic spring 36 is provided with a supporting seat 37.

[0041] Specifically, when the electromagnetic spring 36 is powered off, the electromagnetic spring 36 bounces upward, and the supporting seat 37 also moves upward, contacts the second pipe 6, and pushes against the second pipe 6 to support the entire fire extinguishing mechanism and move it upward above the parking space surface.

[0042] As a preferred embodiment of the present invention, the fourth telescopic steel tube 24 has the same telescopic length as the first telescopic steel tube 8 , and the third telescopic steel tube 20 has the same telescopic length as the second telescopic steel tube 16 .

[0043] Specifically, the consistency of the telescopic length is to ensure that the relative positions of the decompression device and the turbine remain consistent.

[0044] As a preferred embodiment of the present invention, see Figure 7The first telescopic steel tube 8, the second telescopic steel tube 16, the third telescopic steel tube 20, and the fourth telescopic steel tube 24 are all provided with a first baffle at their internal telescopic connections.

[0045] Specifically, a first baffle is provided at each telescopic connection to prevent water from flowing out of the telescopic connection due to excessive water pressure. The first baffle can play a role in reducing pressure.

[0046] As a preferred embodiment of the present invention, see Figure 8 The first pressure reducing device 27 includes a first spring 39 and a first limit block 40. The first limit block 40 is arranged on both sides of the first turbine hydraulic supply pipe 22. A third connecting rod 41 is provided between the first limit blocks 40 on both sides. The second connecting rod 23 is connected to a first telescopic rod 42. The first telescopic rod 42 is sleeved with the first spring 39. One end of the first telescopic rod 42 is connected to a second baffle 43.

[0047] As a preferred embodiment of the present invention, see Figure 9 The second pressure reducing device 28 includes a second spring 44 and a second limit block 45. The second limit blocks 45 are arranged on both sides of the second turbine hydraulic supply pipe 26. A fourth connecting rod 46 is provided between the second limit blocks 45 on both sides. The fourth connecting rod 46 is connected to a second telescopic rod 47. The second telescopic rod 47 is sleeved with a second spring 44. One end of the second telescopic rod 47 is connected to a third baffle 48.

[0048] Specifically, the structures of the first and second pressure reducing devices 27 and 28 are substantially the same, differing in that the second spring 44 used in the first pressure reducing device 27 has a different amount of deformation resistance than the first spring 39. The second spring 44 has a greater amount of deformation resistance than the first spring 39. This allows the first pressure reducing device 27 to compress the first spring 39 when medium-pressure water passes through it, allowing medium-pressure water to pass through the first pressure reducing device 27 while preventing high-pressure and low-pressure water from passing through. Furthermore, when the second pressure reducing device 28 passes this pressurized water, the second spring 44 compresses, allowing high-pressure water to pass through the second pressure reducing device 28 while preventing medium-pressure and low-pressure water from passing through it.

[0049] See Figure 8, a1 in the figure represents the situation where the first pressure reducing device 27 does not pass water at low pressure, a2 represents the situation where medium pressure water passes water at the first pressure reducing device 27, and a3 represents the situation where the first pressure reducing device 27 does not pass water at high pressure. The working principle of the first pressure reducing device 27 is: when low-pressure water passes through, the compressed position of the first spring 39 does not fall on the widest part of the first turbine hydraulic supply pipe 22, and the water flow cannot pass through. When high-pressure water passes through, the compressed position of the first spring 39 causes the second baffle 43 to directly cross the widest part of the first turbine hydraulic supply pipe 22 and fall above the widest part, so the water flow cannot pass through; and when medium-pressure water passes through, the compressed position of the first spring 39 causes the second baffle 43 to fall on the widest part of the first turbine hydraulic supply pipe 22, so the medium-pressure water can pass through the first pressure reducing device 27 and discharge through the water outlet to impact the first turbine 7.

[0050] See Figure 9 In the figure, b1 represents the situation where the second pressure reducing device 28 does not pass water at low pressure, b2 represents the situation where the second pressure reducing device 28 does not pass water at medium pressure, and b3 represents the situation where the second pressure reducing device 28 passes water at high pressure. The working principle of the second pressure reducing device 28 is similar to that of the first pressure reducing device 27, and will not be repeated.

[0051] As a preferred embodiment of the present invention, see Figure 10 The interior of the third pipe 9 is provided with an inverted throttling device 49, and the inverted throttling device 49 includes an upper limit block 50, a lower limit block 51, and a lead block 52. The upper limit block 50 is arranged on the upper part of the inner wall of the third pipe 9, and the lower limit block 51 is arranged on the lower part of the inner wall of the third pipe 9. The lead block 52 can move between the upper limit block 50 and the lower limit block 51. A fixing mechanism is provided below the upper limit block 50, and the fixing mechanism includes a clamping block 53 and a third spring 54. The clamping block 53 is movable through the outer wall of the third pipe 9 and is provided with a pull ring 55 at one end. The middle section of the clamping block 53 is sleeved with a third spring 54, and the other end of the clamping block 53 is sloped.

[0052] For details, see Figure 10 In the figure, c1 represents the situation of the inverted throttling device 49 in the third pipe 9 before flipping, and c2 represents the situation of the inverted throttling device 49 in the third pipe 9 after flipping. Initially, the lead block 52 in the third pipe 9 is located on one side of the water curtain nozzle 11. When the second pipe 6 is flipped, the lead block 52 in the third pipe 9 falls. Due to its own gravity, the lead block 52 can slide to the lower limit block 51 by slightly compressing the second spring 44 through the slope of the other end of the clamping block 53, and is fixed to one side of the cooling nozzle 10 through the clamping block 53, so that when the water curtain nozzle 11 is working, the high-pressure water flow will not pass through the cooling nozzle 10, and the cooling nozzle 10 will stop working.

[0053] Specifically, the present invention provides an underground garage fire extinguishing system, the working principle of which is as follows:

[0054] In a normal state, the fire extinguishing mechanism is installed in the groove 4, and the electromagnetic spring 36 is energized to keep the electromagnetic spring 36 in a compressed state and in a stationary state.

[0055] When the infrared temperature sensor 2 detects a rise in the battery temperature under the electric vehicle, it transmits a signal to the controller, which activates the rotary motor 33, driving the first gear 32 to rotate, which in turn drives the second gear on the cover plate 1. This causes the cover plate 1 to slide horizontally on the first slide rail 30 into the interlayer 29. At this time, the controller controls the fire pump in the fire water tank to start at low pressure and low speed, and the cooling nozzle 10 begins to cool the vehicle battery.

[0056] See Figure 2 and Figure 3 When the battery temperature of the electric vehicle rises again until it catches fire, the infrared temperature sensor 2 and the smoke sensor 3 simultaneously sense that the battery temperature rises again and there is smoke, and the fire water pump in the fire water pool is controlled to start at medium pressure and medium speed. At the same time, the first solenoid valve 21 is opened, and the second solenoid valve 25 is closed. The water flows through the first pressure reducing device 27, and the water impacts the first turbine 7, thereby driving the second pipe 6 to rotate 180 degrees, rotating the dry powder nozzle 15 upward, and the water curtain nozzle 11 also upward (initially, the dry powder nozzle 15 and the water curtain nozzle 11 are both downward). At the same time, the water flows through the water supply pipe 17 to drive the second telescopic steel pipe 16 to rise. At this time, the electromagnetic spring is de-energized, assisting the water flow to drive the second telescopic steel pipe 16 to rise. Subsequently, the control The fire pump is stopped for 10 seconds, and the dry powder pump is started to transfer the dry powder in the dry powder storage room to the fourth pipe 14 through the dry powder pipe 19. The dry powder nozzle 15 starts to extinguish the fire. At the same time as the water flow stops, the lead block 52 in the third pipe 9 falls (initially, the position of the lead block 52 is on the side of the water curtain nozzle 11), and is fixed to the side of the cooling nozzle 10 by the clamping block 53. After 10 seconds, the fire pump in the fire pool is controlled to start at high pressure and speed, and the second solenoid valve 25 is opened at the same time. The water flow hits the first telescopic steel pipe 8 of the second pipe 6 and extends to both sides. At the same time, the water flows through the second pressure reducing device 28, and the water impacts the second turbine 12, causing the water curtain nozzle 11 to continuously rotate 360 degrees to spray water to form a water curtain, thereby preventing the fire from spreading to adjacent parking spaces.

[0057] When the electric vehicle battery directly catches fire, the infrared temperature sensor 2 and the smoke sensor 3 simultaneously sense the fire, and the cover 1 opens. After opening, the electromagnetic spring 36 is de-energized, and the fire pump is directly started at medium pressure and medium speed. The water flows through the first pressure reducing device 27, and the water impacts the second turbine 12, driving the second pipe 6 to rotate. After the rotation, the fire pump is controlled to stop for 10 seconds, and the dry powder pump is started to transfer the dry powder in the dry powder storage chamber to the fourth pipe 14 through the dry powder pipe 19. The dry powder nozzle 15 starts to extinguish the fire. At the same time as the water flow stops, the lead block 52 in the third pipe 9 falls and is fixed to one side of the cooling nozzle 10 by the clamping block 53. After 10 seconds, the fire pump in the fire pool is controlled to start at high pressure and high speed, and the water impacts the first telescopic steel pipe 8 of the second pipe 6 to extend to both sides. At the same time, the water flows through the second pressure reducing device 28, and the water impacts the second turbine 12, causing the water curtain nozzle 11 to continuously rotate 360 degrees to spray water to form a water curtain, thereby preventing the fire from spreading to adjacent parking spaces.

[0058] In addition, by rotating the pipes, the cooling nozzles 10, dry powder nozzles 15, and water curtain nozzles 11 can be concentrated directly below the parking space, saving underground horizontal installation space.

[0059] After the fire is extinguished, the first pipe 5 rotates back to its original position, and then the pull ring 55 is stretched to make the lead block 52 return to the side of the water curtain nozzle 11. Then check whether the equipment is intact, put all the equipment back in place, and start the rotating motor 33 to move the cover plate 1 to its original position.

[0060] It is further stated that the infrared temperature sensor 2 , the smoke sensor 3 , the first solenoid valve 21 , the second solenoid valve 25 , the rotary motor 33 , the electromagnetic spring 36 , and the fire water pump are all connected to and controlled by the controller signal.

[0061] Example 2:

[0062] As a preferred embodiment of the present invention, see Figure 1 and Figure 11 A drainage mechanism is provided at the lower layer of the groove 4, and the drainage mechanism includes an activated carbon plate and a drainage groove 57. The activated carbon plate is provided below the fire extinguishing mechanism. The drainage groove 57 is provided at the bottom of the groove 4, and a third limit block 58 is provided on the top of the drainage groove 57. A drainage pipe 59 is provided at one end of the drainage groove 57. A backwash overflow pipe 60 is provided on the outer side of the upper layer of the groove 4, and one end of the backwash overflow pipe 60 is connected to the drainage pipe 59. A second slide rail 61 is also provided at the bottom of the groove 4, and a baffle 62 is slidably provided on the second slide rail 61. A reset spring 63 is connected to one side of the baffle 62, and a backwash pipe 64 is provided on the outer side of the bottom of the groove 4.

[0063] Specifically, after the fire is extinguished, water and dry powder flow into the groove 4 at the same time, the water is filtered through the activated carbon plate 56, and the dry powder remains on the activated carbon plate 56. The water flows through the activated carbon plate 56 to the lower drainage trough 57, and is collected into the drainage main through the drainage pipe 59, and finally discharged into the sump. If the activated carbon plate 56 is blocked, the water and dry powder can be discharged into the drainage main through the backflush pipe 64, and finally discharged into the sump. The dry powder and water mixture is treated and discharged to the outdoor pipe network through the submersible sewage pump after meeting the standards.

[0064] In particular, when the activated carbon plate 56 is left for a long time, it may be clogged with dust and debris. It can be cleaned once every six months through a fire water tank, and water is discharged through the backwash pipe 64 to impact the baffle 62, so that the baffle 62 slides along the second slide rail 61 to the top of the drainage trough 57, and is limited by the third limit block 58 so that the baffle 62 can just cover the drainage trough 57 to prevent it from sliding too far; at this time, the water level rises, and when it rises to the position of the activated carbon plate 56, the water flow continues to rise, and the buoyancy causes the debris to float, and the overflow port of the backwash overflow pipe 60 is higher than the position of the activated carbon plate 56. Therefore, the debris is discharged to the drainage main pipe through the overflow port of the backwash overflow pipe 60, and finally discharged to the sump.

[0065] 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, improvements, etc. 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 buried underground garage fire extinguishing system, characterized in that: The fire extinguishing device comprises a cover plate provided on the surface of the parking space, an infrared temperature sensor embedded in the ground surface, a smoke sensor provided on the wall, and a groove provided under the surface of the parking space. A fire extinguishing mechanism is provided on the upper layer of the groove. The fire extinguishing mechanism comprises a first pipe, both ends of the first pipe are connected to the second pipe via a rotating shaft, one of the second pipes is provided with a first turbine, the second pipes are connected to the third pipe via a first telescopic steel pipe, one end of the third pipe is connected to a cooling nozzle, the other end is connected to a water curtain nozzle via a rotating shaft, and the end with the water curtain nozzle is provided with a second turbine, one side of the second pipe is connected to a fourth pipe via a first connecting rod, and both ends of the fourth pipe are provided with a dry powder nozzle; The first pipeline is connected to the water supply pipeline through a second telescopic steel pipe, and the fourth pipeline is connected to the dry powder pipeline through a metal bellows. Two third telescopic steel pipes are connected to the middle of the water supply pipeline and a first solenoid valve is provided at the connection point. One end of the third telescopic steel pipe is connected to the first turbine hydraulic supply pipe, and the first turbine hydraulic supply pipe is connected to the first pipeline through a second connecting rod. One end of the first turbine hydraulic supply pipe is connected to the fourth telescopic steel pipe and a second solenoid valve is provided at the connection point. One end of the fourth telescopic steel pipe is connected to the second turbine hydraulic supply pipe. A first pressure reducing device is provided inside one of the first turbine hydraulic supply pipes, and a second pressure reducing device is provided inside the second turbine hydraulic supply pipes.

2. The underground fire extinguishing system for underground garage according to claim 1, characterized in that: A mezzanine is provided at the top of the groove, and first slide rails are provided on both sides of the top of the groove. One end of the first slide rail extends into the interior of the mezzanine, and the first slide rail is slidably connected to the interior of the cover plate through a slider. A first gear is provided on one side of the cover plate, and a rotating motor is provided on one side of the interior of the mezzanine. The output end of the rotating motor is connected to a second gear through a bearing, and the first gear is meshed with the second gear.

3. The underground fire extinguishing system for underground garage according to claim 2, characterized in that: The first turbine is a semi-turbine structure, and the second turbine is a full-turbine structure.

4. The underground fire extinguishing system for underground garage according to claim 3 is characterized in that: A support rod is provided on one side of the upper layer of the groove, one end of the support rod is connected to an electromagnetic spring, and one end of the electromagnetic spring is provided with a supporting seat.

5. The underground fire extinguishing system for underground garage according to claim 4, characterized in that: The telescopic length of the fourth telescopic steel tube is consistent with that of the first telescopic steel tube, and the telescopic length of the third telescopic steel tube is consistent with that of the second telescopic steel tube.

6. The underground fire extinguishing system for underground garage according to claim 5, characterized in that: The first telescopic steel tube, the second telescopic steel tube, the third telescopic steel tube, and the fourth telescopic steel tube are all provided with a first baffle at their internal telescopic connections.

7. The underground fire extinguishing system for underground garage according to claim 6, characterized in that: The first pressure reducing device includes a first spring and a first limit block. The first limit block is arranged on both sides of the first turbine hydraulic supply pipe. A third connecting rod is provided between the first limit blocks on both sides. The second connecting rod is connected to the first telescopic rod. The first telescopic rod is sleeved with a first spring. One end of the first telescopic rod is connected to the second baffle.

8. The underground fire extinguishing system for underground garage according to claim 7, characterized in that: The second pressure reducing device includes a second spring and a second limit block. The second limit blocks are arranged on both sides of the second turbine hydraulic supply pipe. A fourth connecting rod is provided between the second limit blocks on both sides. The fourth connecting rod is connected to the second telescopic rod. The second telescopic rod is sleeved with a second spring. One end of the second telescopic rod is connected to the third baffle.

9. The underground fire extinguishing system for underground garage according to claim 8, characterized in that: An inverted throttling device is provided inside the third pipe, and the inverted throttling device includes an upper limit block, a lower limit block, and a lead block. The upper limit block is arranged on the upper part of the inner wall of the third pipe, and the lower limit block is arranged on the lower part of the inner wall of the third pipe. The lead block can move between the upper limit block and the lower limit block. A fixing mechanism is provided below the upper limit block, and the fixing mechanism includes a clamping block and a third spring. The clamping block is movable through the outer wall of the third pipe and is provided with a pull ring at one end. The middle section of the clamping block is sleeved with the third spring, and the other end of the clamping block is sloped.

10. The underground fire extinguishing system for underground garage according to claim 9, characterized in that: A drainage mechanism is provided at the lower layer of the groove, and the drainage mechanism includes an activated carbon plate and a drainage trough. The activated carbon plate is arranged below the fire extinguishing mechanism, and the drainage trough is arranged at the bottom of the groove. A third limit block is provided on the top of the drainage trough, and a drainage pipe is provided at one end of the drainage trough. A backwash overflow pipe is provided on the outer side of the upper layer of the groove, and one end of the backwash overflow pipe is connected to the drainage pipe. A second slide rail is also provided at the bottom of the groove, and a baffle is slidably provided on the second slide rail. A reset spring is connected to one side of the baffle, and a backwash pipe is provided on the outer side of the bottom of the groove.

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