Heptafluoropropane gas fire extinguishing device and working method thereof

Abstract

The invention relates to the technical field of fire extinguishing devices, in particular to a heptafluoropropane gas fire extinguishing device and a working method thereof. The fire extinguishing device comprises two gas storage tanks and a gas outlet assembly, heptafluoropropane gas is contained in one gas storage tank, inert gas is contained in the other gas storage tank, the gas outlet assembly comprises a shell, a main gas pipe, an auxiliary gas pipe and a lifting seat, one end of the main gas pipe extends out of the side wall of the shell, the other end of the main gas pipe is communicated with the first gas storage tank, and the auxiliary gas pipe is arranged on one side of the main gas pipe. The second air storage tank is communicated with a flow guide rod, the flow guide rod simultaneously penetrates through the main air pipe and the auxiliary air pipe, a first air outlet is formed in the corresponding position of the auxiliary air pipe, the auxiliary air pipe is rotationally connected with the flow guide rod, and the other end of the auxiliary air pipe is rotationally connected with the lifting seat. The two gas storage tanks are arranged, in the fire extinguishing process, heptafluoropropane gas serves as main fire extinguishing gas, then inert gas surrounds the heptafluoropropane gas to cover an ignition point, the instantaneous diffusion range during heptafluoropropane injection is narrowed, and the ignition point covering speed of the inert gas is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguishing devices, and in particular to a heptafluoropropane gas fire extinguishing device and its working method. Background Art

[0002] Heptafluoropropane is widely used in fire extinguishing due to its good fire extinguishing effect and no residue after extinguishing, but it is difficult to be applied in daily life because of its high cost and the need to keep the environment airtight during use to achieve the best use effect; in addition, when using heptafluoropropane, it needs to quickly diffuse in the ignition point environment. The existing spraying methods are often fixed-point fire cabinets or pipe networks. Although there is sufficient spraying height, the three-dimensional diffusion speed is limited, and the spraying angle cannot be adjusted manually due to the risk of asphyxiation. Therefore, a heptafluoropropane gas fire extinguishing device is needed. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above deficiencies, provide a heptafluoropropane gas fire extinguishing device and its working method, solve the problem that the heptafluoropropane fire extinguishing gas has poor fire extinguishing effect outdoors, and has the advantages of being able to quickly identify the dosage, good fire extinguishing effect, and multiple application scenarios.

[0004] In a first aspect, the present invention provides a heptafluoropropane gas fire extinguishing device, including a first gas storage tank, a second gas storage tank, a lifting assembly, and an air outlet assembly. The first gas storage tank and the second gas storage tank are respectively arranged on one side of the lifting assembly, and the air outlet assembly is rotatably arranged above the lifting assembly. The rotation of the air outlet assembly is controlled to adjust the angle between the air outlet assembly and the lifting assembly. The air outlet assembly includes a housing, a main air pipe, a sub-air pipe, and a lifting seat. One end of the main air pipe extends out from the side wall of the housing and the other end is communicated with the first gas storage tank. The sub-air pipe is arranged on one side of the main air pipe. A diversion rod is communicated with the second gas storage tank. The diversion rod penetrates through the main air pipe and the sub-air pipe at the same time, and a first air outlet hole is arranged at the corresponding position of the sub-air pipe. The sub-air pipe is rotatably connected to the diversion rod, and the other end of the sub-air pipe is rotatably connected to the lifting seat.

[0005] Among them, the first gas storage tank contains heptafluoropropane gas, and the second gas storage tank contains an inert gas with a density less than that of heptafluoropropane gas. During use, the lifting and lowering of the lifting seat is controlled to adjust the angle of the sub-air pipe, ensuring that the heptafluoropropane gas is closer to the ignition point than the gas in the second gas storage tank.

[0006] Further, the second gas storage tank contains nitrogen.

[0007] Further, air curtain chambers are arranged on both the left and right sides of the housing. The diversion rod penetrates through the air curtain chambers, and a second air outlet hole is arranged at the position where the air curtain chambers are located.

[0008] Further, a diversion plate is provided in the air curtain cavity. The diversion plate is rotatably connected to the diversion rod and covers the second air outlet hole. A plurality of ventilation channels are provided on the diversion plate in a ring shape, and the extension lines of the ventilation channels do not pass through the axis of the diversion plate.

[0009] Further, the air outlet assembly further includes a shunt pipe. There are a plurality of main air pipes, and the plurality of main air pipes are communicated through the shunt pipe. A switch arc plate and a return spring are provided in the shunt pipe. A plurality of switch holes are equidistantly provided on the switch arc plate. The return spring is provided at one end of the switch arc plate and is connected to the side wall of the main air pipe. In the case of no ventilation, the return spring causes the switch holes on the switch arc plate to be misaligned with the main air pipe.

[0010] Further, the gas in the second gas storage tank realizes the lifting control of the lifting assembly. When the gas in the second gas storage tank is exhausted, the height of the lifting assembly decreases.

[0011] Further, the lifting assembly includes a sealing sleeve and a sealing rod. The sealing sleeve is sleeved on the sealing rod. An air outlet hole three for communicating with the diversion rod is provided on the bottom side of the sealing sleeve. The gas in the second gas storage tank is introduced into the space formed between the sealing sleeve and the sealing rod to realize the relative movement control between the sealing sleeve and the sealing rod. When the sealing rod moves below the air outlet hole three, the gas in the second gas storage tank enters the diversion rod.

[0012] Further, the lifting assembly further includes a moving block. A balance hole is provided on the side wall of the sealing sleeve. The moving block is coaxially arranged in the sealing sleeve, and its movable path includes the position where the balance hole is located. A flow channel is provided axially on the moving block. When gas is injected into the sealing sleeve, the moving block covers and blocks the balance hole. When the injection of gas into the sealing sleeve stops, the moving block moves upward under the action of the gas in the sealing sleeve, so that the balance hole is opened.

[0013] Further, the device further includes a cover body, and the cover body is arranged around the lifting assembly.

[0014] In a second aspect, the present invention provides a working method of a heptafluoropropane gas fire extinguishing device. Based on the above-mentioned fire extinguishing device, the specific steps are as follows: S1: When a fire breaks out, place the device at the fire extinguishing point, and then start the second gas storage tank to work. The lifting assembly is started under the action of the gas in the second gas storage tank, so that the air outlet assembly reaches the final height. At this time, air flow begins to be discharged from the auxiliary air pipe.

[0015] S2: Adjust the inclination angle of the auxiliary air pipe according to the position of the ignition point to ensure that the gas discharged from the first gas storage tank is closer to the ignition point than the gas discharged from the second gas storage tank.

[0016] S3: When the gas in the second gas storage tank is gradually exhausted, the lifting assembly returns to its original position, so that the height of the air outlet assembly decreases. Judge whether it is necessary to replenish and replace the fire extinguishing device from the height position of the air outlet assembly.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are as follows: By providing two gas storage tanks in the present invention, two different gases are sprayed in different directions to achieve the fire extinguishing effect. During the fire extinguishing process, the heptafluoropropane gas is used as the main fire extinguishing gas, and then inert gases with different densities surround the heptafluoropropane gas and cover the ignition point, reducing the instantaneous diffusion range when the heptafluoropropane is sprayed, increasing the covering speed of the heptafluoropropane to the ignition point, and further improving the fire extinguishing effect of the heptafluoropropane gas in a non-closed space; by providing a lifting component controlled by the intake amount of the inert gas to adjust the spraying height of the gas outlet component, the three-dimensional diffusion speed of the gas is increased. When the inert gas is exhausted, the height of the gas outlet component gradually decreases to indicate insufficient usage, and the usage state of the device is more intuitive and more convenient for unmanned fire extinguishing.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.

[0019] Undoubtedly, such objects of the present invention and other objects will become more apparent after the detailed description of the preferred embodiments described below with multiple drawings and illustrations.

[0020] To make the above and other objects, features, and advantages of the present invention more obvious and understandable, one or several preferred embodiments are specifically given below, and in conjunction with the accompanying drawings shown, the detailed description is as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

[0022] In the drawings, the same components are denoted by the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only one or several embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on such drawings without creative efforts.

[0024] Figure 1 It is a schematic diagram of the overall structure of a heptafluoropropane gas fire extinguishing device of the present invention; Figure 2 It is a partial perspective view of the side of a heptafluoropropane gas fire extinguishing device of the present invention; Figure 3Schematic structural diagram of the gas outlet component of a heptafluoropropane gas fire extinguishing device according to the present invention; Figure 4 Internal structural schematic diagram of the gas outlet component of a heptafluoropropane gas fire extinguishing device according to the present invention; Figure 5 Perspective view of the flow dividing pipe of a heptafluoropropane gas fire extinguishing device according to the present invention; Figure 6 Schematic structural diagram of the switch arc plate of a heptafluoropropane gas fire extinguishing device according to the present invention; Figure 7 Internal perspective view of the air curtain cavity of a heptafluoropropane gas fire extinguishing device according to the present invention; Figure 8 Perspective view of the flow guiding disc structure of a heptafluoropropane gas fire extinguishing device according to the present invention; Figure 9 Perspective view of the lifting component of a heptafluoropropane gas fire extinguishing device according to the present invention; Figure 10 Cross-sectional view of the lifting component of a heptafluoropropane gas fire extinguishing device according to the present invention.

[0025] Description of the main reference numerals: 1 - First gas storage tank; 2 - Second gas storage tank; 21 - Flow guiding rod; 211 - First air outlet hole; 3 - Lifting component; 31 - Sealing sleeve; 311 - Third air outlet hole; 312 - Balance hole; 32 - Sealing rod; 33 - Moving block; 331 - Flow channel; 4 - Gas outlet component; 41 - Housing; 411 - Air curtain cavity; 4111 - Ventilation channel; 412 - Flow guiding disc; 42 - Main air pipe; 43 - Sub - air pipe; 44 - Lifting seat; 45 - Flow dividing pipe; 46 - Switch arc plate; 461 - Switch hole; 47 - Return spring; 5 - Cover body. Detailed implementation manners

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further elaborates on the present invention in conjunction with specific implementation manners. It should be understood that the specific implementation manners described herein are only used to explain the present invention, but not to limit the present invention.

[0027] Refer to Figures 1-10, in a first aspect, the present invention provides a technical solution: a heptafluoropropane gas fire extinguishing device. The device includes a first gas storage tank 1, a second gas storage tank 2, a lifting assembly 3, and an air outlet assembly 4.

[0028] The first gas storage tank 1 and the second gas storage tank 2 are respectively arranged on one side of the lifting assembly 3. Among them, the first gas storage tank 1 contains heptafluoropropane gas, and the second gas storage tank 2 contains an inert gas with a density less than that of heptafluoropropane gas, such as nitrogen.

[0029] The air outlet assembly 4 is rotatably arranged above the lifting assembly 3, and the rotation of the air outlet assembly 4 is controlled to adjust the angle between the air outlet assembly 4 and the lifting assembly 3. The method of controlling the rotation of the air outlet assembly 4 can be to coaxially arrange a driving motor on the rotation axis of the air outlet assembly 4, or to use a transmission structure, such as a pulley, a gear, or any other method to connect the driving device to the rotation axis of the air outlet assembly 4.

[0030] The air outlet assembly 4 includes a housing 41, a main air pipe 42, a sub-air pipe 43, and a lifting seat 44. One end of the main air pipe 42 extends out from the side wall of the housing 41 and the other end is connected to the first gas storage tank 1. The main air pipe 42 is fixedly connected to the housing 41, and the spraying angle of the main air pipe 42 is adjusted by controlling the rotation of the housing 41. The sub-air pipe 43 is arranged on one side of the main air pipe 42. The second gas storage tank 2 is connected with a diversion rod 21. The diversion rod 21 penetrates through the main air pipe 42 and the sub-air pipe 43 from the side and has a first air outlet hole 211 at the corresponding position of the sub-air pipe 43. The sub-air pipe 43 is rotatably connected to the diversion rod 21, and the other end of the sub-air pipe 43 is rotatably connected to the lifting seat 44; during use, the up and down movement of the lifting seat 44 is controlled to adjust the angle of the sub-air pipe 43, ensuring that the heptafluoropropane gas is closer to the ignition point than the gas in the second gas storage tank 2.

[0031] To reduce the diffusion range on both sides of the heptafluoropropane gas, air curtain chambers 411 are provided on both the left and right sides of the side housing 41. The diversion rod 21 penetrates through the air curtain chambers 411 and has second air outlet holes at the positions where the air curtain chambers 411 are located. At the same time, in order to make the diffusion of the second air outlet holes on the diversion rod 21 uniform, a diversion disk 412 is provided in the air curtain chambers 411. The diversion disk 412 is rotatably connected to the diversion rod 21 and covers the second air outlet holes. A number of ventilation channels 4111 whose extension lines do not pass through the center of the diversion disk 412 are arranged on the diversion disk 412. The ventilation channels 4111 have an inclined angle with the second air outlet holes, resulting in the rotation of the diversion disk 412 during the spraying of the pressurized gas.

[0032] There can be several main air pipes 42. In this case, the air outlet assembly 4 further includes a shunt pipe 45, and several main air pipes 42 are connected through the shunt pipe 45. In order to enable the main air pipes 42 at different positions to simultaneously emit strong gas, a switch arc plate 46 and a return spring 47 are provided in the shunt pipe 45. Several switch holes 461 are equidistantly arranged on the switch arc plate 46. The return spring 47 is arranged at one end of the switch arc plate 46 and is connected to the side wall of the main air pipe 42. In the case of no air supply, the return spring 47 causes the switch holes 461 on the switch arc plate 46 to be misaligned with the main air pipe 42. When gas is introduced into the shunt pipe 45, the inside of the shunt pipe 45 needs to be filled first, and then the switch arc plate 46 is driven to move so that the switch holes 461 are aligned with the main air pipe 42.

[0033] The lifting assembly 3 can be driven by electric or pneumatic control. In this embodiment, the gas in the second air storage tank 2 is used to control the lifting of the lifting assembly 3. When the gas in the second air storage tank 2 is exhausted, the height of the lifting assembly 3 decreases. Its specific structure is as follows: The lifting assembly 3 includes a sealing sleeve 31 and a sealing rod 32. The sealing sleeve 31 is sleeved on the sealing rod 32. An air outlet hole three 311 for communicating with the guide rod 21 is provided on the bottom side of the sealing sleeve 31. The gas in the second air storage tank 2 is introduced into the space formed between the sealing sleeve 31 and the sealing rod 32 to control the relative movement between the sealing sleeve 31 and the sealing rod 32. When the sealing rod 32 moves below the air outlet hole three 311, the gas in the second air storage tank 2 enters the guide rod 21. When the gas in the second air storage tank 2 is about to be exhausted or has been exhausted, the gas entering the sealing sleeve 31 is not enough to support the self-weight of the sealing sleeve 31 and the air outlet assembly 4. At this time, the sealing sleeve 31 will descend under the action of gravity. At this time, the gas in the sealing sleeve 31 and the sealing rod 32 is squeezed out. The discharge method can be to set a valve between the second tank body and the sealing sleeve 31. However, in order to reduce the manual control of the entire device, the lifting assembly 3 further includes a moving block 33. A balance hole 312 is provided on the side wall of the sealing sleeve 31. The moving block 33 is coaxially arranged in the sealing sleeve 31 and its movable path includes the position where the balance hole 312 is located. The moving block 33 is provided with a flow channel 331 along the axial direction. When gas is injected into the sealing sleeve 31, the moving block 33 covers and blocks the balance hole 312. When the injection of gas into the sealing sleeve 31 stops, the moving block 33 moves upward under the action of the gas in the sealing sleeve 31, so that the balance hole 312 is opened.

[0034] Further, in order to protect the working environment of the sealing sleeve 31, the device further includes a cover body 5, and the cover body 5 is arranged around the lifting assembly 3.

[0035] In the second aspect, the present invention provides a working method of a heptafluoropropane gas fire extinguishing device. Based on the above-mentioned fire extinguishing device, the specific steps are as follows: S1: When a fire breaks out, place the device at the fire extinguishing point, then start the operation of the second gas storage tank 2. The lifting assembly 3 is activated under the action of the gas in the second gas storage tank 2, causing the gas outlet assembly 4 to reach the final height. At this time, air flow begins to be discharged from the auxiliary air pipe 43.

[0036] S2: Adjust the inclination angle of the auxiliary air pipe 43 according to the position of the ignition point to ensure that the gas discharged from the first gas storage tank 1 is closer to the ignition point than the gas discharged from the second gas storage tank 2. When the ignition point is not higher than the height of the main air pipe 42, lower the lifting seat 44 to make the auxiliary air pipe 43 swing upward. At this time, the ejection height of the gas in the second gas storage tank 2 is higher than that of the heptafluoropropane gas. Because its density is lower than that of the heptafluoropropane gas, a protective gas layer will be formed on the surface of the heptafluoropropane. When the ignition point is higher than the height of the main air pipe 42, raise the lifting seat 44 to make the auxiliary air pipe 43 swing downward. At this time, the ejection height of the gas in the second gas storage tank 2 is lower than that of the heptafluoropropane gas. Because its density is lower than that of the heptafluoropropane gas, an instantaneous thrust will be formed below the heptafluoropropane to push the heptafluoropropane to cover the ignition point.

[0037] S3: When the gas in the second gas storage tank 2 is gradually exhausted, the lifting assembly 3 returns to its original position, causing the height of the gas outlet assembly 4 to decrease. Determine whether it is necessary to replenish or replace the fire extinguishing device based on the height position of the gas outlet assembly 4.

[0038] It should be understood that the embodiments disclosed in the present invention are not limited to the specific processing steps or materials disclosed herein, but should extend to equivalent alternatives of such features understood by those of ordinary skill in the relevant art. It should also be understood that the terms used herein are for the purpose of describing specific embodiments only and do not imply limitation.

[0039] The "embodiments" mentioned in the specification mean that the specific features or characteristics described in connection with the embodiments are included in at least one embodiment of the present invention. Therefore, the phrase "embodiments" that appears throughout the specification does not necessarily refer to the same embodiment.

[0040] In addition, the described features or characteristics can be combined into one or more embodiments in any other suitable way. In the above description, some specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of the embodiments of the present invention. However, those skilled in the relevant art will understand that the present invention can be implemented without one or more of the above specific details or can also be implemented using other methods, components, materials, etc.

Claims

1. A heptafluoropropane gas fire extinguishing device, characterized in that, It includes a first gas storage tank, a second gas storage tank, a lifting assembly and an air outlet assembly. The first gas storage tank and the second gas storage tank are respectively arranged on one side of the lifting assembly. The air outlet assembly is rotatably arranged above the lifting assembly. The rotation of the air outlet assembly is controlled to adjust the angle between the air outlet assembly and the lifting assembly. The air outlet assembly includes a housing, a main air pipe, a sub-air pipe and a lifting seat. One end of the main air pipe extends out from the side wall of the housing and the other end is communicated with the first gas storage tank. The sub-air pipe is arranged on one side of the main air pipe. The second gas storage tank is communicated with a guide rod. The guide rod penetrates through the main air pipe and the sub-air pipe at the same time and has a first air outlet hole at the corresponding position of the sub-air pipe. The sub-air pipe is rotatably connected with the guide rod. The other end of the sub-air pipe is rotatably connected with the lifting seat; Among them, the first gas storage tank contains heptafluoropropane gas, and the second gas storage tank contains an inert gas with a density less than that of heptafluoropropane gas. During use, the lifting seat is controlled to move up and down to adjust the angle of the sub-air pipe, ensuring that the heptafluoropropane gas is closer to the ignition point than the gas in the second gas storage tank.

2. The heptafluoropropane gas fire extinguishing device according to claim 1, characterized in that, The second gas storage tank contains nitrogen.

3. The heptafluoropropane gas fire extinguishing device according to claim 1, characterized in that, Air curtain cavities are provided on both the left and right sides of the housing. The guide rod penetrates through the air curtain cavity and has a second air outlet hole at the position where the air curtain cavity is located.

4. The heptafluoropropane gas fire extinguishing device according to claim 3, characterized in that, A guide disk is arranged in the air curtain cavity. The guide disk is rotatably connected with the guide rod and covers the second air outlet hole. A number of ventilation channels whose extension lines do not pass through the axis of the guide disk are arranged on the guide disk in a ring shape.

5. The heptafluoropropane gas fire extinguishing device according to claim 1, characterized in that, The air outlet assembly further includes a shunt pipe. There are several main air pipes. The several main air pipes are communicated through the shunt pipe. A switch arc plate and a return spring are arranged in the shunt pipe. Several switch holes are equidistantly arranged on the switch arc plate. The return spring is arranged at one end of the switch arc plate and is connected with the side wall of the main air pipe. In the case of no ventilation, the return spring causes the switch holes on the switch arc plate to be misaligned with the main air pipe.

6. The heptafluoropropane gas fire extinguishing device according to claim 1, characterized in that, The gas in the second gas storage tank realizes the lifting control of the lifting assembly through the lifting assembly. When the gas in the second gas storage tank is exhausted, the height of the lifting assembly decreases.

7. The heptafluoropropane gas fire extinguishing device according to claim 6, characterized in that, The lifting assembly includes a sealing sleeve and a sealing rod. The sealing sleeve is sleeved on the sealing rod. An air outlet hole three for communicating with the guide rod is arranged on the bottom side of the sealing sleeve. The gas in the second gas storage tank is introduced into the space formed between the sealing sleeve and the sealing rod to realize the relative movement control between the sealing sleeve and the sealing rod. When the sealing rod moves below the air outlet hole three, the gas in the second gas storage tank enters the guide rod.

8. The heptafluoropropane gas fire extinguishing device according to claim 7, wherein The lifting assembly further includes a moving block. A balance hole is arranged on the side wall of the sealing sleeve. The moving block is coaxially arranged in the sealing sleeve and its movable path includes the position where the balance hole is located. A flow channel is arranged axially on the moving block. When gas is injected into the sealing sleeve, the moving block covers and blocks the balance hole. When the injection of gas into the sealing sleeve stops, the moving block moves upward under the action of the gas in the sealing sleeve, so that the balance hole is opened.

9. The heptafluoropropane gas fire extinguishing device according to claim 8, characterized in that, It further includes a cover body, and the cover body is arranged around the lifting assembly.

10. A working method of a heptafluoropropane gas fire extinguishing device, based on the fire extinguishing device described in claim 7, characterized in that, The specific steps are as follows: S1: When a fire breaks out, place the device at the fire extinguishing point, and then start the second gas storage tank to work. The lifting assembly is started under the action of the gas in the second gas storage tank, so that the air outlet assembly reaches the final height. At this time, air flow begins to be discharged from the sub-air pipe; S2: Adjust the inclination angle of the secondary air pipe according to the position of the ignition point to ensure that the gas discharged from the first gas storage tank is closer to the ignition point than the gas discharged from the second gas storage tank; S3: After the gas in the second gas storage tank is gradually exhausted, the lifting assembly returns to its original position, causing the height of the gas outlet assembly to decrease, and determining whether it is necessary to replenish or replace the fire extinguishing device based on the height position of the gas outlet assembly.

Images