New energy parking space fire retardant device and control method thereof

Abstract

The invention provides a new energy parking space fire retardant device and a control method thereof. The new energy parking space fire retardant device comprises a main controller. The hanging frame is arranged above the parking space; the fire behavior recognition assembly is used for recognizing whether a fire behavior occurs in the parking space or not; the fire retardant assembly comprises a fireproof curtain detachably connected to the lower end face of the hanging frame, the fireproof curtain is made of a flexible fireproof material, a row of transverse balancing weights are arranged on the lower edges of the two wide edges of the fireproof curtain in the width direction of the parking space, and a plurality of longitudinal balancing weights are arranged on the lower edges of the two long edges of the fireproof curtain in the length direction of the parking space; the front and back adjacent longitudinal balancing weights are in limited sliding connection, when one longitudinal balancing weight is blocked and stopped in the falling process, the adjacent longitudinal balancing weight at one end slides in a limited mode, and impact force towards the outer side of the parking space is generated on the blocked and stopped longitudinal balancing weight; and the releasing assembly is controlled by the main controller, is arranged on the hanging frame and is used for releasing the fireproof curtain to descend. The invention provides an efficient and stable fire-retarding and fire-extinguishing device for a new energy parking space.

Description

Technical Field

[0001] The present invention relates to the technical field of garage safety devices, and particularly relates to a fire prevention device for new energy parking spaces and a control method thereof. Background Art

[0002] With the continuous increase in global attention to environmental protection and sustainable development, new energy electric vehicles have shown an explosive growth in the market due to their energy-saving and environmental protection advantages. The widespread use of new energy electric vehicles has greatly changed people's travel modes, reduced the dependence on traditional fuels, and effectively reduced carbon emissions. However, while bringing convenience, new energy electric vehicles are also accompanied by a series of safety hazards. Especially during the charging process, fire accidents occur frequently, posing a serious threat to people's lives and property safety.

[0003] The power source of new energy electric vehicles is mainly lithium batteries. Lithium batteries have advantages such as high energy density and long cycle life, but they also have problems with poor thermal stability. During the charging process, complex electrochemical reactions occur inside the battery. If the battery ages or the heat dissipation is poor, etc., it may lead to thermal runaway of the battery and cause a fire. Moreover, lithium battery fires develop rapidly, with fierce flames, and the high temperature and toxic smoke generated will cause serious damage to the surrounding environment in a short time. Therefore, in order to effectively control the fires that occur in new energy electric vehicle parking spaces, fire prevention and extinguishing measures have been set up in the parking spaces.

[0004] Defects of the prior art: 1. There may be some infrastructure above the existing electric vehicle parking spaces, and it is inconvenient to install some fire prevention and extinguishing facilities. 2. In actual parking scenarios, there are still problems with irregular parking, which cannot be solved by standardizing the driver's behavior or in a low-cost way. Many times, electric vehicles are parked randomly and do not accurately locate according to the parking space lines. Their rearview mirrors or other protruding parts often exceed the boundaries of the parking spaces. For some existing fire prevention measures, such as fire curtains, once a fire is detected, they will automatically drop to block the spread of the fire. However, due to these protruding parts of the irregularly parked electric vehicles, the fire curtains are extremely easy to be stuck during the falling process, resulting in an inability to fully drop and an ineffective fire prevention barrier cannot be formed, providing a passage for the fire to spread and further exacerbating the harm of the fire.

[0005] In view of this, in order to build a solid safety line for new energy electric vehicle parking spaces, it is urgent to develop targeted fire prevention and extinguishing devices. Only in this way can we accurately respond and quickly extinguish the fire at the first time of the fire occurrence, protecting people's lives and property safety. Summary of the Invention

[0006] The present invention provides a fire prevention device for new energy parking spaces and a control method thereof, which can effectively solve the above problems.

[0007] The present invention is implemented as follows: A fire prevention device for a new energy parking space, comprising: A main controller; A hanging frame, arranged above the parking space; A fire situation recognition component, used to recognize whether a fire occurs in the parking space; A fire prevention component, which includes a fireproof curtain detachably connected to the lower end face of the hanging frame. The fireproof curtain is made of flexible fireproof material. A row of several transverse counterweights is arranged at the lower edges of the two wide sides of the fireproof curtain along the width direction of the parking space. Several longitudinal counterweights are arranged at the lower edges of the two long sides of the fireproof curtain along the length direction of the parking space. The front and rear adjacent longitudinal counterweights are connected in a limited sliding manner. When one longitudinal counterweight is blocked and stagnates during the falling process, one of the adjacent longitudinal counterweights slides with it in a limited way and generates an impact force towards the outside of the parking space on the blocked and stagnated longitudinal counterweight; A release component, controlled by the main controller and arranged on the hanging frame, used to release the fireproof curtain to descend.

[0008] As a further improvement, the main body of the longitudinal counterweight is in the shape of a triangular prism, and the cross-sectional profile is an isosceles right triangle. The surface where the hypotenuse of the isosceles right triangle is located in the triangular prism faces the inside of the parking space; One end of the longitudinal counterweight is provided with a slot and the other end is provided with a circular connecting column. The slot is composed of a long strip part and a circular part. The connecting column is inserted into the slot from the circular part and moves into the long strip part for sliding and clamping; The axis of the length direction of the long strip part forms an angle α with the hypotenuse of the isosceles right triangle, where 0° < α ≤ 40°. The upper end face of the longitudinal counterweight is provided with a first installation groove for connecting with the fireproof curtain. The two ends of the long strip part are two semi-circles with equal radii. The center of the semi-circle closer to the upper part, the center line of the first installation groove, and the center of mass of the longitudinal counterweight are located in the same vertical plane.

[0009] As a further improvement, the transverse counterweight is composed of a semi-cylindrical part and a cuboid part. The lower end faces of the semi-cylindrical part and the cuboid part are both inclined planes and are smoothly connected. Their inclined planes face the inside of the parking space. The upper end face of the transverse counterweight is provided with a second installation groove for connecting with the fireproof curtain.

[0010] As a further improvement, the release component includes several electromagnetic bolts arranged on the hanging frame, used to release the connection of the first steel wire rope at the bottom of the fireproof curtain. Fixed pulleys are arranged on both sides of each electromagnetic bolt on the upper end face of the hanging frame.

[0011] As a further improvement, the fire curtain is made of flame-retardant and fire-resistant basalt fiber fireproof cloth and is folded and stored above the parking space. A number of lower side slits are provided around the lower edge of the fire curtain, and a transverse counterweight or a longitudinal counterweight is provided between two adjacent lower side slits. Both the transverse counterweight and the longitudinal counterweight are made of aluminum alloy.

[0012] As a further improvement, it further includes at least four water spray nozzles, which are arranged on the hanging frame, and the water spray nozzles are connected to the solenoid valve through pipe fittings.

[0013] As a further improvement, it further includes at least one electrically controlled trigger fire extinguishing bomb, which is suspended on the hanging frame.

[0014] As a further improvement, the fire situation recognition component adopts a camera smoke and flame recognition device, and also includes a on-site emergency switch for on-site personnel to manually press the emergency switch to send a fire alarm signal to the main controller when a fire is detected.

[0015] As a further improvement, a number of hanging rings are provided around the lower end surface of the hanging frame. A curtain head is provided at the top of the fire curtain, and a number of upper side slits are provided on the curtain head. The hanging rings and the upper side slits correspond one by one and are connected by a second steel wire rope passing through them in sequence. The head and tail of the second steel wire rope are connected, and 10-30 cm are left at both the head and the tail of the second steel wire, and the connection part is located outside the fire curtain.

[0016] As a further improvement, a control method for a fire prevention device of a new energy parking space includes the following steps: S1. The fire situation recognition component recognizes that a fire has occurred in the vehicle and sends a fire situation signal to the main controller; S2. The main controller controls the release component to release the fire curtain and simultaneously controls the solenoid valve to open; S3. After a delay of 2-5 minutes, the main controller controls the electrically controlled trigger fire extinguishing bomb to be activated.

[0017] The beneficial effects of the present invention are: 1. By the fire situation recognition component to recognize the fire situation in the parking space and trigger the fall of the fire curtain. The fire curtain is provided with a transverse counterweight in the width direction of the parking space and a longitudinal counterweight in the length direction. The front and rear adjacent longitudinal counterweights are connected by limited sliding. When a longitudinal counterweight is blocked, an impact force to the outside is generated on the adjacent counterweight. And because the fire curtain is made of a flexible material, the blocked longitudinal counterweight can be moved outward to pull the fire curtain to continue to fall, solving the problem that the normal fall of the fire curtain is easily blocked by the vehicle rearview mirror due to non-standard parking positions. 2. The special shape of the longitudinal counterweight and the connection structure work together to improve the performance of the fire curtain. Its main body is a triangular prism with an isosceles right triangle cross-section. The hypotenuse surface faces the inside of the parking space and forms a 45° angle with the horizontal plane. One end is provided with a slot composed of a long strip part and a circular part. The circular connecting column at the other end is inserted into the slot from the circular part and slides and is clamped within the long strip part. When the fire curtain falls and encounters an obstacle such as an electric vehicle rearview mirror or the edge of the vehicle roof, if the hypotenuse surface makes prior contact with the obstacle, the hypotenuse surface can decompose the resistance of the obstacle into horizontal and vertical component forces. The horizontal component force pushes the blocked longitudinal counterweight to move towards the outside of the parking space. Usually, the upper end surface of the vehicle's rearview mirror is designed to be inclined outward or horizontal. When encountering a rearview mirror with an upwardly inclined end surface, the longitudinal counterweight with a hypotenuse surface can enable the fire curtain to fall better; if the edge at the bottom of the longitudinal counterweight makes prior contact with the obstacle, the longitudinal counterweight will tilt towards the inside of the parking space. Even if the hypotenuse surface of the longitudinal counterweight is preferentially tilted to the horizontal state, the long strip part of the slot always has an angle with the horizontal plane. The longitudinal counterweight at the adjacent end has a limit sliding with it and generates an impact force towards the outside of the parking space on the blocked and stagnant longitudinal counterweight; at the same time, the unique connection structure ensures that the counterweights can slide relative to each other and will not easily break away. During the long-term use of the fire curtain, even under the influence of external forces such as vibration and swing, the connection will not fail.

[0018] 3. The release component is composed of an electromagnetic bolt and a fixed pulley. The electromagnetic bolt is controlled by the main controller. After receiving a signal, it releases the first steel wire rope connecting the fire curtain to achieve the descent of the fire curtain. The fixed pulley also facilitates the fire curtain to be pulled up by a rope during reset, with simple operation.

[0019] 4. With the assistance of water spray nozzles, at least four water spray nozzles are provided on the hanging frame, connected to the solenoid valve through pipe fittings, supplied with water by the fire water supply system, and controlled by the main controller to spray water towards the inside of the parking space to assist in cooling, suppress the fire, and enhance the fire extinguishing effect; Assisted by an electrically controlled trigger fire extinguishing bomb: In a space surrounded by enclosures on all sides, a high-concentration environment of dry powder fire extinguishing agent is quickly formed to suppress combustion; compared with a carbon dioxide fire extinguishing bomb, the volume of the expanding gas during operation is small, and it is not easy to burst the fire curtain or make the fire curtain bounce up. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a diagram showing the completely fallen state of the fire blocking component provided by the embodiment of the present invention.

[0022] Figure 2 It is a diagram of the contraction state of the fire-blocking component provided by an embodiment of the present invention.

[0023] Figure 3 is Figure 2 The partial enlarged view at position A in

[0024] Figure 4 It is a schematic diagram of the longitudinal counterweight and the bottom structure of the fireproof curtain provided by an embodiment of the present invention.

[0025] Figure 5 It is a side view of one end of the slot of the longitudinal counterweight provided by an embodiment of the present invention.

[0026] Figure 6 It is a diagram of the changing state of the longitudinal counterweight being blocked during falling provided by an embodiment of the present invention.

[0027] Figure 7 It is a schematic diagram of the transverse counterweight provided by an embodiment of the present invention.

[0028] Figure 8 It is a schematic diagram of the release component provided by an embodiment of the present invention.

[0029] Figure 9 It is a schematic diagram of the installation of the water spray nozzle and the electrically triggered fire extinguishing bomb provided by an embodiment of the present invention.

[0030] Figure 10 It is a distribution diagram of the multi-parking-space linked water spray nozzles and electrically triggered fire extinguishing bombs provided by another embodiment of the present invention.

[0031] Figure 11 It is a flowchart of the control method of an embodiment of the present invention.

[0032] Reference numerals: 1. Main controller; 2. Suspension frame; 21. Hanging ring; 3. Fire situation recognition component; 4. Fire-blocking component; 41. Fireproof curtain; 411. Lower side fork; 412. Upper side fork; 42. Longitudinal counterweight; 421. Slot; 4211. Circular part; 4212. Long strip part; 422. Connecting column; 423. First installation groove; 43. Transverse counterweight; 431. Semi-cylindrical part; 432. Cuboid part; 433. Second installation groove; 44. First steel wire rope; 5. Release component; 51. Electromagnetic bolt; 52. Fixed pulley; 6. Second steel wire rope; 7. Water spray nozzle; 8. Solenoid valve; 9. Electrically controlled triggered fire extinguishing bomb. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0034] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0035] Referring to Figures 1 to 9 as shown, a fire prevention device for a new energy parking space includes: A hanging frame 2 for hanging a fire prevention component 4, which can be connected to the ceiling above the parking space or the steel member above the parking space through a metal connector; the middle of the hanging frame 2 is hollowed out to be used for avoiding other infrastructure such as lights or pipes; A fire situation recognition component 3 for recognizing whether a fire occurs in the parking space; preferably, the fire situation recognition component 3 adopts a camera smoke and flame recognition device, which includes a camera for collecting images and an identification module including smoke and flame recognition technology. The fire situation recognition component 3 also includes an on-site emergency switch for on-site personnel to manually press the emergency switch to send a fire alarm signal to the main controller 1 when a fire is detected; The fire-blocking component 4 includes a fireproof curtain 41 detachably connected to the lower end face of the hanging frame 2. The fireproof curtain 41 is made of flexible fireproof material. A row of 20-25 transverse counterweights 43 with a length of 10-15 cm are provided at the lower edges of the two wide sides of the fireproof curtain 41 along the width direction of the parking space. The transverse counterweights 43 can be arranged in an arc protruding towards the outside of the parking space, which can better match the contour of the vehicle head or tail, increase the maximum dimension of the bottom of the fireproof curtain 41 along the length direction of the parking space, and avoid the situation where the fireproof curtain 41 cannot be fully lowered when the vehicle is parked slightly forward or backward. 20-25 longitudinal counterweights 42 with a length of 10-15 cm and connected by front-back limit sliding are provided at the lower edges of the two long sides of the fireproof curtain 41 along the length direction of the parking space. The number and length of the counterweights are selected and set according to the actual size of the parking space. When a longitudinal counterweight 42 is blocked and stagnated during the falling process, the previous longitudinal counterweight 42 has a limit sliding connection with it and generates an impact force towards the outside of the parking space on the blocked and stagnated longitudinal counterweight 42, causing the blocked and stagnated longitudinal counterweight 42 to move towards the outside of the parking space and pulling the fireproof curtain 41 to deform outwards, so that the fireproof curtain 41 can continue to fall; It should be noted that for the length setting of the counterweights, if the counterweights are set too long, the force required to move a single counterweight will be relatively large and the amount of local displacement will be limited. If the length is set too short, it is easy to cause an increase in the number of counterweights and too small a mass of a single unit, resulting in poor effects.

[0036] The release component 5 is arranged on the hanging frame 2 and is used to release the fireproof curtain 41 to descend. When the main controller 1 receives a fire signal, it sends an activation signal to the release component 5 to make the fireproof curtain 41 descend; The main controller 1 has a communication module and can communicate with the fire situation recognition component 3 in a wired / wireless manner. The main controller 1 has programmable functions and is communicatively connected to the parking lot fire control platform.

[0037] The main body of the longitudinal counterweight 42 is a triangular prism, and the cross-sectional profile is an isosceles right triangle. The surface where the hypotenuse of the isosceles right triangle is located in the triangular prism (i.e., the hypotenuse surface) faces the inner side of the parking space; one end of the longitudinal counterweight 42 is provided with a slot 421 and the other end is provided with a circular connecting column 422. The slot 421 is composed of a long strip part 4212 and a circular part 4211. The connecting column 422 is inserted into the slot 421 from the circular part 4211 and moves into the long strip part 4212 for sliding and clamping. The connecting column 422 cannot be directly taken out from the long strip part 4212 and can only slide on the long strip part 4212; the axis in the length direction of the long strip part 4212 forms an angle α with the hypotenuse of the isosceles right triangle, where 0° < α ≤ 40°. The upper end surface of the longitudinal counterweight 42 is provided with a first installation groove 423 for connecting with the fire curtain 41. The edge of the fire curtain 41 is inserted into the first installation groove 423 and fixed by horizontally inserting bolts. Both ends of the long strip part 4212 are two semi-circles with equal radii. The center of the semi-circle closer to the upper part, the center line of the first installation groove 423, and the centroid of the longitudinal counterweight 42 are located in the same vertical plane, so that when the longitudinal counterweight 42 is suspended, the hypotenuse surface forms a 45° angle with the horizontal plane. The length of the right-angled side of the isosceles right triangle is 8 - 12 cm. Because there is still a gap between the rearview mirror and the side of the vehicle, if the length of the right-angled side of the isosceles right triangle is too small, the longitudinal counterweight 42 is likely to get stuck, and if the length is too long, it will cause waste of materials; It should be noted that the end of the longitudinal counterweight 42 with the connecting column 422 points to the vehicle driving direction in the parking space. Because usually the charging port of the electric vehicle is located at the rear of the vehicle and the charging pile is located opposite to the entrance of the parking space, the vehicle needs to reverse into the parking space for charging. At this time, the rearview mirror of the vehicle is closer to the end of the driving direction. When the fire curtain 41 descends, if the longitudinal counterweight 42 gets stuck above the rearview mirror, the number of longitudinal counterweights 42 on the side of the longitudinal counterweight 42 close to the connecting column 422 is larger when it is blocked and stagnant, and it can generate a greater impact force towards the outside of the parking space on the blocked and stagnant longitudinal counterweight 42.

[0038] The transverse counterweight 43 is composed of a semi-cylindrical part 431 and a cuboid part 432. The lower end surfaces of the semi-cylindrical part 431 and the cuboid part 432 are both inclined planes and are smoothly connected. Their inclined planes face the inner side of the parking space. The upper end surface of the transverse counterweight 43 is provided with a second installation groove 433 for connecting with the fire curtain 41. The edge of the fire curtain 41 is inserted into the second installation groove 433 and fixed by horizontally inserting bolts. When the head or tail part of the vehicle exceeds the range of the fire curtain 41, when the fire curtain 41 descends, the inclined plane of the transverse counterweight 43 contacts the vehicle body, which can make the transverse counterweight 43 slide towards the outside of the parking space, so that it can fall normally. Moreover, the upper surfaces of the head and tail parts of the vehicle usually have a certain curvature.

[0039] The release component 5 includes eight electromagnetic bolts 51 provided on the upper end face of the hanging frame 2. The electromagnetic bolts 51 are connected to the main controller 1 and controlled by it. The number of electromagnetic bolts 51 can be increased or decreased according to needs to better stably suspend the fire curtain 41. The electromagnetic bolts 51 are used to release the first steel wire rope 44 connected to the bottom of the fire curtain 41. Fixed pulleys 52 are provided on both sides of each electromagnetic bolt 51 on the upper end face of the hanging frame 2. One end of the first steel wire rope 44 is provided with a ring and connected to the electromagnetic bolt 51. The movable pin of the electromagnetic bolt 51 passes through the ring to fix it. When the electromagnetic bolt 51 receives the release signal, the movable pin contracts to release the ring. The other end of the first steel wire rope 44 is connected to the position near the lower edge of the fire curtain 41. When it is necessary to test whether the device can be normally activated and used, and when the fire curtain 41 needs to be pulled up again after being released and lowered, the fire curtain 41 can be pulled up by connecting a rope around the fixed pulley 52 and the first steel wire rope 44, making the reset of the fire curtain 41 more convenient.

[0040] The fire curtain 41 is made of flame-retardant and fire-resistant basalt fiber fireproof cloth and is folded and stored above the parking space. The basalt fiber itself has a relatively high melting point, generally around 1450°C - 1500°C, and is not easily melted and deformed. It also has good flexibility, which is convenient for better sliding between the longitudinal counterweights 42. It is not only easy to cut and process. A lower hem 411 equidistantly distributed from the length of the counterweight is provided around the lower edge of the fire curtain 41. A transverse counterweight 43 or a longitudinal counterweight 42 is provided between two adjacent lower hems 411. Both the transverse counterweight 43 and the longitudinal counterweight 42 are made of aluminum alloy. Aluminum alloy is easy to react with oxygen in the air and forms a dense aluminum oxide film on the surface. This oxide film can prevent the internal aluminum alloy from further oxidation, giving it natural rust resistance and enabling it to maintain stable performance under different environmental conditions and extend the service life of the counterweight. Moreover, this oxide film of aluminum alloy has stable properties and high hardness, which can prevent direct contact and interaction between aluminum alloy atoms. Even if two counterweights are in close contact for a long time, due to the existence of the oxide film, they will not stick or rust and seize, ensuring that the longitudinal counterweights 42 can be limited in sliding and will not fail due to adhesion caused by long-term placement.

[0041] Four water spray nozzles 7 are also provided on the hanging frame 2, and multiple water spray nozzles 7 are connected to a solenoid valve 8 through pipe fittings to control the on-off of water. The solenoid valve 8 is controlled by the main controller 1. The water spray nozzles 7 spray water towards the inside of the parking space, and the water spray nozzles 7 are supplied with water by the fire water supply system.

[0042] It also includes at least one electrically controlled trigger fire extinguishing bomb 9, which is suspended on the hanging frame 2 and controlled by the main controller 1. Preferably, a dry powder fire extinguishing bomb is used. When the fire extinguishing bomb is released in a relatively enclosed space, it is beneficial for the dry powder fire extinguishing agent to quickly form a high-concentration environment in a limited area, rapidly suppress the combustion reaction, effectively control the spread of the electric vehicle fire, and the dry powder fire extinguishing agent filled in the dry powder fire extinguishing bomb mainly consists of sodium bicarbonate, ammonium phosphate, etc. During fire extinguishing, the dry powder is ejected through the driving gas (usually nitrogen, etc.) in the container. The dry powder fire extinguishing agent itself does not quickly vaporize from a liquid state into a large amount of gaseous state like carbon dioxide, and the volume of the gas expanded during operation is relatively small, and will not burst the fireproof curtain 41; due to the high energy density and relatively active chemical properties of the lithium battery of the electric vehicle, once thermal runaway causes a fire, the development speed is relatively fast. Usually, a small explosion may occur within 1 - 5 minutes after the fire sign appears, and a large-scale flame jet may occur within 3 - 10 minutes. The interval time may be shorter under certain conditions. If there are two electrically controlled trigger fire extinguishing bombs 9 that can be triggered asynchronously, it can better suppress the explosion or flame jet.

[0043] A row of equally spaced hanging rings 21 are provided on the lower end surface of the hanging frame 2. The top of the fireproof curtain 41 is provided with a curtain head, and a row of equally spaced upper side slits 412 are provided on the curtain head. The hanging rings 21 and the upper side slits 412 correspond one by one and are connected by a second steel wire rope 6 passing through them in sequence. The head and tail of the second steel wire rope 6 are connected, and the head and tail lengths of the second steel wire are both left with 10 - 30 cm, and the connection part of the second steel wire is located outside the fireproof curtain 41. When the fire-fighting personnel arrive at the scene for disposal and need to remove the fireproof curtain 41, they only need to separate and extract the head and tail of the second steel wire, and then the fireproof curtain 41 can be removed, which is very convenient. And the reserved second steel wire can play a buffering role when the fireproof curtain 41 descends rapidly, reduce the impact on the fixed structure of the hanging frame 2, and avoid structural damage and the fireproof curtain 41 falling.

[0044] Refer to Figure 10 As shown in the figure, in another embodiment, different from the above embodiment, at least two electromagnetic valves 8 are installed on the hanging frame 2. The water spray nozzles 7 can be divided into two groups and are respectively connected to different electromagnetic valves 8. One group of water spray directions faces outward, and the other group of water spray directions faces inward. The fire situation recognition component 3 includes a positioning camera and can identify the specific parking space on fire among multiple parking spaces. While blocking and extinguishing the fire in the parking space on fire, the main controller can release the surrounding adjacent fireproof curtains, making them fall to further protect the surrounding vehicles. And the main controller can also control the opening of the water spray nozzles 7 with the water spray direction facing outward, which can spray water on the fireproof curtains of adjacent parking spaces, but does not trigger the electrically controlled trigger fire extinguishing bombs 9 on the parking spaces without fire, which can to a certain extent slow down the direct impact of the fire on the fireproof curtain, extend the effective fireproof time of the fireproof curtain, enhance its fireproof effect, and enhance the protection of the surrounding adjacent parking spaces.

[0045] Referring to Figure 11 as shown, a control method for a fire prevention device of a new energy parking space, which comprises the following steps: S1. The fire detection component 3 detects a fire on the vehicle in the parking space and sends a fire signal to the main controller 1; Specifically, the camera smoke and flame recognition device collects the picture in real time and analyzes and recognizes the picture. When a fire is recognized in the picture, the fire signal is sent to the main controller 1; or when someone on the scene discovers a fire and presses the emergency switch on the scene, the emergency switch sends the fire signal to the main controller 1.

[0046] S2. The main controller 1 controls the release component 5 to release the fire curtain 41; Specifically, after receiving the fire signal, the main controller 1 sends high / low level signals to eight electromagnetic bolts 51 and the solenoid valve 8 at the same time, so as to trigger the contraction of the movable bolts and the opening of the solenoid valve 8 to let water through.

[0047] S3. Delay for 2-5 minutes, and the main controller 1 controls the electrically controlled trigger fire extinguishing bomb 9 to be activated; Specifically, usually a small explosion may occur within 1-5 minutes after the appearance of signs of fire, and a large-scale flame jet may occur within 3-10 minutes. Preferably, it is set that after a delay of 4 minutes, the main controller 1 sends high / low level signals to the electrically controlled trigger fire extinguishing bomb 9 to trigger it.

[0048] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fire prevention device for a new energy parking space, characterized in that, Comprising: A main controller (1); A hanging frame (2), provided above the parking space; A fire recognition component (3), used to recognize whether a fire has occurred in the parking space; A fire blocking component (4), which includes a fire curtain (41) detachably connected to the lower end face of the hanging frame (2). The fire curtain (41) is made of a flexible fireproof material. A row of several transverse counterweights (43) are provided at the lower edges of the two wide sides of the fire curtain (41) along the width direction of the parking space. A number of longitudinal counterweights (42) are provided at the lower edges of the two long sides of the fire curtain (41) along the length direction of the parking space. The adjacent longitudinal counterweights (42) are connected in a limit sliding manner. When one longitudinal counterweight (42) is blocked and stagnated during the falling process, one end of the adjacent longitudinal counterweight (42) slides in a limit manner with it, and generates an impact force towards the outside of the parking space on the blocked and stagnated longitudinal counterweight (42); A release component (5), controlled by the main controller (1) and provided on the hanging frame (2), used to release the fire curtain (41) to descend.

2. The fire-blocking device for a new energy parking space according to claim 1, wherein, The main body of the longitudinal counterweight (42) is a triangular prism, and the cross-sectional profile is an isosceles right triangle. The surface where the hypotenuse of the isosceles right triangle is located in the triangular prism faces the inside of the parking space; One end of the longitudinal counterweight (42) is provided with a slot (421), and the other end is provided with a circular connecting column (422). The slot (421) is composed of a long strip portion (4212) and a circular portion (4211). The connecting column (422) is inserted into the slot (421) from the circular portion (4211) and moves into the long strip portion (4212) for sliding and clamping; The axis of the length direction of the long strip portion (4212) forms an angle α with the hypotenuse of the isosceles right triangle, where 0° < α ≤ 40°. The upper end face of the longitudinal counterweight (42) is provided with a first installation groove (423) for connecting with the fire curtain (41). The two ends of the long strip portion (4212) are two semi-circles with equal radii. The center of the semi-circle closer to the upper part, the center line of the first installation groove (423), and the centroid of the longitudinal counterweight (42) are located in the same vertical plane.

3. The fire-blocking device for a new energy parking space according to claim 1, wherein, The transverse counterweight (43) is composed of a semi-cylindrical portion (431) and a cuboid portion (432). The lower end faces of the semi-cylindrical portion (431) and the cuboid portion (432) are both inclined planes and are smoothly connected. Their inclined planes face the inside of the parking space. The upper end face of the transverse counterweight (43) is provided with a second installation groove (433) for connecting with the fire curtain (41).

4. The fire prevention device for a new energy parking space according to claim 2, characterized in that, The release component (5) includes a number of electromagnetic bolts (51) provided on the hanging frame (2), used to release and connect the first steel wire rope (44) at the bottom of the fire curtain (41). Fixed pulleys (52) are provided on both sides of each electromagnetic bolt (51) on the upper end face of the hanging frame (2).

5. The fire prevention device for a new energy parking space according to claim 2, characterized in that, The fire curtain (41) is made of flame-retardant and fire-resistant basalt fiber fireproof cloth and is folded and stored above the parking space. A number of lower side slits (411) are provided around the lower edge of the fire curtain (41). A transverse counterweight block (43) or a longitudinal counterweight block (42) is provided between two adjacent lower side slits (411). Both the transverse counterweight block (43) and the longitudinal counterweight block (42) are made of aluminum alloy material.

6. The fire-blocking device for a new energy parking space according to claim 1, characterized in that, It further includes at least four water spray nozzles (7). The water spray nozzles (7) are arranged on the hanging frame (2), and the water spray nozzles (7) are connected to an electromagnetic valve (8) through pipe fittings.

7. The fire prevention device for a new energy parking space according to claim 6, characterized in that, It further includes at least one electrically controlled trigger fire extinguishing bomb (9). The electrically controlled trigger fire extinguishing bomb (9) is suspended on the hanging frame (2).

8. The fire prevention device for a new energy parking space according to claim 1, characterized in that, The fire situation recognition component (3) adopts a camera smoke and flame recognition device, and further includes a field emergency switch for on-site personnel to manually press the emergency switch to send a fire alarm signal to the main controller (1) when a fire is detected.

9. The fire prevention device for a new energy parking space according to claim 1, characterized in that, A number of hanging rings (21) are provided in a circle on the lower end face of the hanging frame (2). A curtain head is provided at the top of the fire curtain (41). A number of upper side slits (412) are provided on the curtain head. The hanging rings (21) and the upper side slits (412) correspond one by one and are connected by a second steel wire rope (6) passing through them in sequence. The head and tail of the second steel wire rope (6) are connected, and 10 - 30 cm are left at both the head and tail lengths of the second steel wire, and the connection point is located outside the fire curtain (41).

10. The control method of a new energy parking space fire prevention device according to claim 7, characterized in that, It includes the following steps: S1. The fire situation recognition component (3) recognizes that a fire has occurred to the vehicle in the parking space and sends a fire situation signal to the main controller (1); S2. The main controller (1) controls the release component (5) to release the fire curtain (41) and simultaneously controls the electromagnetic valve (8) to open; S3. After a delay of 2 - 5 minutes, the main controller (1) controls the electrically controlled trigger fire extinguishing bomb (9) to be activated.

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